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Factors resisting protein adsorption on hydrophilic/hydrophobic self-assembled monolayers terminated with hydrophilic hydroxyl groups
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作者 毛党新 吴园燕 涂育松 《Chinese Physics B》 SCIE EI CAS CSCD 2024年第6期605-612,共8页
The hydroxyl-terminated self-assembled monolayer(OH-SAM),as a surface resistant to protein adsorption,exhibits substantial potential in applications such as ship navigation and medical implants,and the appropriate str... The hydroxyl-terminated self-assembled monolayer(OH-SAM),as a surface resistant to protein adsorption,exhibits substantial potential in applications such as ship navigation and medical implants,and the appropriate strategies for designing anti-fouling surfaces are crucial.Here,we employ molecular dynamics simulations and alchemical free energy calculations to systematically analyze the factors influencing resistance to protein adsorption on the SAMs terminated with single or double OH groups at three packing densities(∑=2.0 nm^(-2),4.5 nm^(-2),and 6.5 nm^(-2)),respectively.For the first time,we observed that the compactness and order of interfacial water enhance its physical barrier effect,subsequently enhancing the resistance of SAM to protein adsorption.Notably,the spatial hindrance effect of SAM leads to the embedding of protein into SAM,resulting in a lack of resistance of SAM towards protein.Furthermore,the number of hydroxyl groups per unit area of double OH-terminated SAM at ∑=6.5 nm^(-2) is approximately 2 to 3 times that of single OH-terminated SAM at ∑=6.5 nm^(-2) and 4.5 nm^(-2),consequently yielding a weaker resistance of double OH-terminated SAM towards protein.Meanwhile,due to the structure of SAM itself,i.e.,the formation of a nearly perfect ice-like hydrogen bond structure,the SAM exhibits the weakest resistance towards protein.This study will complement and improve the mechanism of OH-SAM resistance to protein adsorption,especially the traditional barrier effect of interfacial water. 展开更多
关键词 molecular dynamics simulation self-assembled monolayer resistance to protein adsorption hydrogen bond interfacial water
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Interfacial Modification of NiO_(x)by Self-assembled Monolayer for Efficient and Stable Inverted Perovskite Solar Cells 被引量:1
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作者 Xin Yu Yandong Wang +5 位作者 Liufei Li Shantao Zhang Shuang Gao Mao Liang Wen-Hua Zhang Shangfeng Yang 《Chinese Journal of Chemical Physics》 SCIE EI CAS CSCD 2024年第4期553-562,I0080-I0091,I0095,共23页
NiO_(x)as a hole transport material for inverted perovskite solar cells has received great attention owing to its high transparency,low fabrication temperature,and superior stability.However,the mismatched energy leve... NiO_(x)as a hole transport material for inverted perovskite solar cells has received great attention owing to its high transparency,low fabrication temperature,and superior stability.However,the mismatched energy levels and possible redox reactions at the NiO_(x)/perovskite interface severely limit the performance of NiO_(x) based inverted perovskite solar cells.Herein,we introduce a p-type self-assembled monolayer between NiO_(x)and perovskite layers to modify the interface and block the undesirable redox reaction between perovskite and NiO_(x)The selfassembled monolayer molecules all contain phosphoric acid function groups,which can be anchored onto the NiOr surface and passivate the surface defect.Moreover,the introduction of self-assembled monolayers can regulate the energy level structure of NiO_(x),reduce the interfacial band energy offset,and hence promote the hole transport from perovskite to NiO_(x)layer.Consequently,the device performance is significantly enhanced in terms of both power conversion efficiency and stability. 展开更多
关键词 Perovskite solar cell NiO_(x) self-assembled monolayer Interfacial engineering Stability
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Self-Assembled Monolayers (SAMs): Which Perspectives in Implant Dentistry?
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作者 Filiberto Mastrangelo Giulia Fioravanti +2 位作者 Raimondo Quaresima Raffaele Vinci Enrico Gherlone 《Journal of Biomaterials and Nanobiotechnology》 2011年第5期533-543,共11页
Self-assembled monolayers (SAMs) are ordered organic films formed by adsorption of an active organic coating on a solid surface. Their formation provides an alternative, highly innovative, to current traditional chemi... Self-assembled monolayers (SAMs) are ordered organic films formed by adsorption of an active organic coating on a solid surface. Their formation provides an alternative, highly innovative, to current traditional chemical treatments of the titanium surfaces. For this reason the structural phases, the formation and the growth of SAMs is described from a surface science point of view. Particulars are given to SAMs on titanium concerning surface morphology, chemical composition and affinity of specific head group for Ti surfaces (silanes, siloxane, phosphonates and phosphates). Preparation, coating methodologies, limitations and techniques used for the characterization of SAMs are reported. For their physicochemical characteristics and micro-nano scale features some perspectives of using SAMs in biomedical application are outlined. 展开更多
关键词 Titanium Surfaces IMPLANT DENTISTRY OSTEOINTEGRATION self-assemblING monolayers PHOSPHATES
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Self-assembled monolayers(SAMs)in inverted perovskite solar cells and their tandem photovoltaics application
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作者 Zijun Yi Xin Li +11 位作者 Yuchen Xiong Guibin Shen Wenguang Zhang Yihuai Huang Qinghui Jiang Xin Ren Ng Yubo Luo Jianghui Zheng Wei Lin Leong Fan Fu Tongle Bu Junyou Yang 《Interdisciplinary Materials》 EI 2024年第2期203-244,共42页
Self-assembled monolayers(SAMs)employed in inverted perovskite solar cells(PSCs)have achieved groundbreaking progress in device efficiency and stability for both single-junction and tandem configurations,owing to thei... Self-assembled monolayers(SAMs)employed in inverted perovskite solar cells(PSCs)have achieved groundbreaking progress in device efficiency and stability for both single-junction and tandem configurations,owing to their distinctive and versatile ability to manipulate chemical and physical interface properties.In this regard,we present a comprehensive review of recent research advancements concerning SAMs in inverted perovskite singlejunction and tandem solar cells,where the prevailing challenges and future development prospects in the applications of SAMs are emphasized.We thoroughly examine the mechanistic roles of diverse SAMs in energy-level regulation,interface modification,defect passivation,and charge transportation.This is achieved by understanding how interfacial molecular interactions can be finely tuned to mitigate charge recombination losses in inverted PSCs.Through this comprehensive review,we aim to provide valuable insights and references for further investigation and utilization of SAMs in inverted perovskite single‐junction and tandem solar cells. 展开更多
关键词 inverted perovskite solar cells power conversion efficiency self-assembled monolayers TANDEM
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温度梯度下SAMs膜对油滴迁移行为控制及减摩效果试验研究
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作者 纪学成 刘长松 +1 位作者 吴安琪 栗心明 《摩擦学学报(中英文)》 EI CAS CSCD 北大核心 2024年第8期1043-1049,共7页
采用自组装单分子膜技术以及局部紫外光刻技术相结合的方法,制备了条形润湿性表面,用于解决由温度梯度作用造成的油滴热毛细迁移而导致的接触区域乏油问题.使用高速摄像机以及接触角测量仪,对温度梯度下,液体石蜡在所制备表面与原始不... 采用自组装单分子膜技术以及局部紫外光刻技术相结合的方法,制备了条形润湿性表面,用于解决由温度梯度作用造成的油滴热毛细迁移而导致的接触区域乏油问题.使用高速摄像机以及接触角测量仪,对温度梯度下,液体石蜡在所制备表面与原始不锈钢表面上的迁移速度、迁移距离及接触角进行了对比.结果表明:在不锈钢表面设计的条形图案能够有效地抑制油滴的热毛细迁移现象.将制备表面进一步应用于摩擦磨损试验中,发现所制备表面能使液体石蜡在摩擦的过程中始终汇聚在摩擦接触区,减缓了接触区乏油,能够明显减少摩擦磨损.此研究为解决由油滴热毛细迁移而引起的接触区乏油问题提供了新思路和新方法. 展开更多
关键词 自组装单分子膜(sams) 温度梯度 热毛细迁移 乏油 减摩
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Dielectric Properties of Self-assembled Monolayers of Dithiols
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作者 罗江龙 夏晨 《Chinese Journal of Chemical Physics》 SCIE CAS CSCD 北大核心 2006年第6期515-518,共4页
Dielectric properties of dithiol self-assemble monolayers (SAMs) under ac electric field were presented, Using a Hg-SAM/SAM-Ⅱg junction, the ac impedances of dithiol SAMs were measured using a sinusoidal perturbati... Dielectric properties of dithiol self-assemble monolayers (SAMs) under ac electric field were presented, Using a Hg-SAM/SAM-Ⅱg junction, the ac impedances of dithiol SAMs were measured using a sinusoidal perturbation of 30 mV (peak to-peak) with the frequency ranging from 1 Hz to 1 MHz at zero bias. The contributions from dithiol SAMs and solvent interlayers were separated due to their different behaviors at ac impedance. The peak position in the loss spectra (the plot; of tgδ vs. frequency) moves to low frequcney with the incrcase of chain length of dithiols. Using a correlation of peak position with the chain length, the active energies of 23-39 meV for dithiol SAMs of C6-C10 under an ac electric field were derived, 展开更多
关键词 Dithiol self-assembled monolayers AC impedance Loss spectra
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Attachment of tyrosinase on mixed self-assembled monolayers for the construction of electrochemical biosensor 被引量:2
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作者 Xue Ping Ji Xian Rui Li Na Wang Rui Xing Ni Xiao Hong Liu Hua Ai Xiong 《Chinese Chemical Letters》 SCIE CAS CSCD 2010年第10期1239-1242,共4页
A mixed self-assembled monolayers (SAMs) of thioctic acid (T-COOH) and thioctic acid amide (T-NH2) were used to immobilize tyrosinase for fabricating biosensor. The results showed that the mixed SAMs prepared fr... A mixed self-assembled monolayers (SAMs) of thioctic acid (T-COOH) and thioctic acid amide (T-NH2) were used to immobilize tyrosinase for fabricating biosensor. The results showed that the mixed SAMs prepared from solution at the ratio of 1:4 provided an excellent microenvironment for enzymatic reaction between tyrosinase and substrate. The biosensor exhibited a fast response and high sensitivity for sensing substrate. 展开更多
关键词 BIOSENSOR TYROSINASE CATECHOL self-assembled monolayers Gold electrode
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Characterization of Self-assembled Monolayers on Gold Electrode Using Electrochemical Quartz Crystal Microbalance 被引量:1
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作者 Yonggui Dong 《稀有金属材料与工程》 SCIE EI CAS CSCD 北大核心 2006年第A03期392-395,共4页
The electrochemical quartz crystal microbalance (EQCM) is used to investigate the characteristics of the thiolated self-assembled monolayer(SAM) on gold surface.A 5MHz QCM element serves as both the mass-sensitive sen... The electrochemical quartz crystal microbalance (EQCM) is used to investigate the characteristics of the thiolated self-assembled monolayer(SAM) on gold surface.A 5MHz QCM element serves as both the mass-sensitive sensor and the working electrode of the electrochemical system.The 6-mecapto-1-hexanol and and the 16-mer oligonucleotide with a mercaptohexyl group at the 5'-phosphate end are utilized to form the SAM on the gold electrode.The frequency response of the QCM during cyclic voltammetry (CV) scanning and cbronoamperometry are recorded together with the electrochemical current.The experimental results indicates that the frequency response is more sensitive to the surface coverage.Therefore,the response of the EQCM reveals more details of the SAM on gold electrode.It is especially useful for analysing the immobilization quality,such as probe orientation and coverage,of the SAM. 展开更多
关键词 quartz crystal microbalancc self-assembled monolayer cyclic voltammetry CHRONOAMPEROMETRY
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Preparation and Characterization of SrTiO_3 Thin Film on Functional Organic Self-Assembled Monolayers 被引量:1
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作者 刘剑 苗鸿雁 《Journal of Wuhan University of Technology(Materials Science)》 SCIE EI CAS 2010年第3期365-369,共5页
SrTiO3 thin film was successfully prepared on the functionalized organic self-assembled monolayers(SAMs) by the Liquid Phase Deposition(LPD) method.The as-prepared samples were characterized by X-ray diffraction(... SrTiO3 thin film was successfully prepared on the functionalized organic self-assembled monolayers(SAMs) by the Liquid Phase Deposition(LPD) method.The as-prepared samples were characterized by X-ray diffraction(XRD),atomic force microscope(AFM),scanning electron microscopy(SEM) and metallographic microscope.Measurement of contact angle showed that the hydrophobe substrate was changed into hydrophile by UV irradiation.AFM photographs of octadecyl-trichloro-silane self-assembled monolayer(OTS-SAM) surface approved that UV irradiation did change the morphology of OTS monolayer and provided evidence for the conversion of hydrophilic characteristic.Photographs of Metallographic Microscope showed that OTS-SAM had an active effect on the deposition of SrTiO3 thin film.XRD and SEM indicated that the thin film was of pure cubic phase SrTiO3 and composed of nanosized grains with a size in the range of 100-500 nm.The formation mechanism of the SrTiO3 film was proposed. 展开更多
关键词 self-assembled monolayers SRTIO3 thin film formation mechanism
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Simultaneous Determination of Dopamine and Uric Acid at 2-Amino-5-mercapto-[1, 3, 4]triazole Self-assembled Monolayers Gold Electrode 被引量:1
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作者 ChuanYinLIU LiZhuYANG +2 位作者 FengSONG LingYanJIANG GuangHanLU 《Chinese Chemical Letters》 SCIE CAS CSCD 2005年第2期237-240,共4页
A newly synthesized reagent 2-amino-5-mercapto-[1, 3, 4]triazole (MATZ) has been usedto fabricate self-assembled monolayers (SAMs) on gold electrode for the first time. The SAMselectrode was characterized by electroch... A newly synthesized reagent 2-amino-5-mercapto-[1, 3, 4]triazole (MATZ) has been usedto fabricate self-assembled monolayers (SAMs) on gold electrode for the first time. The SAMselectrode was characterized by electrochemical methods and scanning electronic microscopy (SEM),the SAMs electrode can be used to determinate dopamine (DA) and uric acid (UA) simultaneouslywith a detection limit of 8×10-7 mol/L for DA and 1×10-6 mol/L for UA respectively. The SAMscan also be used to detect the contents of DA and UA in synthetic urine sample with satisfactoryresults. 展开更多
关键词 Amino-5-mercapto-[1 3 4]triazole DOPAMINE uric acid self-assembled monolayer.
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Stability Behaviour of Monolayer Tetraether Lipids on the Amino-Silanised Silicon Wafer: Comparative Study between Langmuir-Blodgett Monolayers with Self-Assembled Monolayers 被引量:1
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作者 Sri Vidawati Udo Bakowsky Urich Rothe 《Advances in Materials Physics and Chemistry》 2020年第11期270-281,共12页
This study investigated the stability behaviour of molecular monolayer symmetric chemically modified tetraether lipids caldarchaeol-PO<sub>4</sub> on the amino-silanised silicon wafer using Langmuir-Blodge... This study investigated the stability behaviour of molecular monolayer symmetric chemically modified tetraether lipids caldarchaeol-PO<sub>4</sub> on the amino-silanised silicon wafer using Langmuir-Blodgett films, Self Assembling Monolayers (SAMs), ellipsometry, and atomic force microscopy (AFM). The monolayers of caldarchaeol-PO<sub>4 </sub>were stable on the solid surface amino-silanised silicon wafer. The organizations of molecular monolayers caldarchaeol-PO<sub>4</sub> by Langmuir-Blodgett method and SAMs have been analyzed. The surface of pressure in Langmuir-Blodgett processing is carried out monolayers caldarchaeol-PO<sub>4</sub> more flat island inhomogeneous. Another method of monolayers caldarchaeol-PO<sub>4</sub> by SAMs is showed a large flat domain. Monolayers caldarchaeol-PO<sub>4</sub> by Langmuir-Blodgett method seems to be stable and chemically resistant after washing with organic solvent and an additional treatment ultrasonification with various thickness lipids arround 2 nm to 6 nm. Conversely, monolayer caldarchaeol-PO<sub>4</sub> by SAMs appears fewer than monolayers caldarchaeol-PO<sub>4</sub> by Langmuir-Blodgett method, the thickness of various from 1 nm to 3 nm. 展开更多
关键词 Caldarchaeol-PO4 Langmuir-Blodgett Films Self Assembling monolayers (sams) Amino-Silanised Silicon Wafer
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Studies of Self-assembled Monolayers Formed by Imidazofine on Iron Surface by SEM and SECM
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作者 Xiu Yu LIU Shen Hao CHEN +4 位作者 Shuai MIAO Su Xiang WU Li Xia SHEN Yuan Xing CAI Hong Yan ZHAI 《Chinese Chemical Letters》 SCIE CAS CSCD 2006年第12期1615-1618,共4页
The self-assembled monolayers (SAMs) of imidazoline (IM) on the iron surface were characterized by scanning electron microscope (SEM) and scanning electrochemical microscopy (SECM). The results showed that SAM... The self-assembled monolayers (SAMs) of imidazoline (IM) on the iron surface were characterized by scanning electron microscope (SEM) and scanning electrochemical microscopy (SECM). The results showed that SAMs were an effective inhibition film for iron. 展开更多
关键词 IMIDAZOLINE self-assembled monolayers sams SEM SECM.
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Direct electrochemistry and electrocatalysis of horseradish peroxidase immobilized on L-glutathione self-assembled monolayers
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作者 Chuan Yin Liu Ji Ming Hu 《Chinese Chemical Letters》 SCIE CAS CSCD 2008年第8期955-958,共4页
A novel hydrogen peroxide biosensor has been fabricated based on covalently linked horseradish peroxidase (HRP) onto L- glutathione self-assembled monolayers (SAMs). The SAMs-based electrode was characterized by e... A novel hydrogen peroxide biosensor has been fabricated based on covalently linked horseradish peroxidase (HRP) onto L- glutathione self-assembled monolayers (SAMs). The SAMs-based electrode was characterized by electrochemical methods, and direct electrochemistry of HRP can be achieved with formal potential of-0.242 V (vs. saturated Ag/AgCl) in pH 7 phosphate buffer solution (PBS), the redox peak current is linear to scan rate and rate constant can be calculated to be 0.042 s^-1. The HRP-SAMs- based biosensors show its better electrocatalysis to hydrogen peroxide in the concentration range of 1 × 10^-6 mol/L to 1.2 × 10^-3 mol/L with a detection limit of 4 × 10^-7 mol/L. The apparent Michealis-Menten constant is 3.12 mmol/L. The biosensor can effectively eliminate the interferences of dopamine, ascorbic acid, uric acid, catechol and p-acetaminophen. 展开更多
关键词 Direct electrochemistry Horseradish peroxidase BIOSENSOR self-assembled monolayer Hydrogen peroxide
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A MEMS Based Amperometric Immunosensor with Self-assembled Monolayers Immobilization Technique
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作者 Yuanyuan Xu Chao Bian Shaofeng Chen Shanhong Xia 《稀有金属材料与工程》 SCIE EI CAS CSCD 北大核心 2006年第A03期344-345,共2页
Based on MEMS technology,immunosensor with an'Au,Pt,Pt'three-microelectrode system enclosed in a SU-8 micro pool was fabricated.Employing SAMs technique,the Au electrode was modified by cysteamine(Cys)to assem... Based on MEMS technology,immunosensor with an'Au,Pt,Pt'three-microelectrode system enclosed in a SU-8 micro pool was fabricated.Employing SAMs technique,the Au electrode was modified by cysteamine(Cys)to assemble gold nanopanicles(nanogold)layer,subsequently,a layer of protein G(PG)was immobilized on nanogold layer to further capture antibody orientedly.Compared with the immunosensors using bulky gold electrode and direct PG binding to electrode immobilization technique for antibody,it has attractive advantages,such as miniaturization,good compatibility,broad linear range for human immunoglobulin(HIgG)and easy to be designed into array. 展开更多
关键词 amperometric immunosensor microelectromechanical systems self-assembled monolayers gold nanoparticles protein G human immunoglobulin
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Characterization of Formation Kinetics of Self-Assembled Thiol Monolayers on Gold by Electrochemical Impedance Spectroscopy
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作者 Peng DIAO Min GUO Ru Ting TONG 《Chinese Chemical Letters》 SCIE CAS CSCD 2000年第12期1085-1088,共4页
Self-assembled monolayers of octadecanethiol (ODT) on gold have been studied by electrochemical impedance spectroscopy (EIS). The fractional coverage has been examined as a function of immersion time of Au in ODT depo... Self-assembled monolayers of octadecanethiol (ODT) on gold have been studied by electrochemical impedance spectroscopy (EIS). The fractional coverage has been examined as a function of immersion time of Au in ODT deposition solution. The fractional coverage exhibits two distinct adsorption steps: an initial rapid step followed by a slow one. The fractional coverage of ODT monolayer increases sharply from zero to more than 99% of its maximum within the first minute. However. it takes a day for the fractional coverage to approach its final value. 展开更多
关键词 self-assembled thiol monolayer electrochemical impedance spectroscopy adsorption kinetics
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The Intermolecular Interaction in Self-Assembled Monolayers on Gold Electrode
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作者 Hui Bao SHAO Da Yin LI Jie Shu TU(Department of Chemistry, Capital Normal University, Beijing, 100037) 《Chinese Chemical Letters》 SCIE CAS CSCD 1999年第2期145-146,共2页
The intermolecular interaction in an azobenzene self-assembled monolayers (SAMs) on gold electrode was investigated by controlling the assembling time and using mixed self-assembled techniques, and the variation of ap... The intermolecular interaction in an azobenzene self-assembled monolayers (SAMs) on gold electrode was investigated by controlling the assembling time and using mixed self-assembled techniques, and the variation of apparent electron transfer rate constant (k(s)) of azobenzene SAMs with different molecular packing density is reported. 展开更多
关键词 self-assembled monolayers intermolecular interaction electron transfer rate constant
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Surface Dissociation Properties of Short Chain Carboxyl Mercaptan Self-Assembled Monolayers by Impedance Titration
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作者 LIU Chuanyin HU Junfu LU Guanghan 《Wuhan University Journal of Natural Sciences》 CAS 2007年第3期522-528,共7页
Impedance titration was used to determine the surface dissociation characteristics of short-chain carboxyl mercaptan self-assembled monolayers (SAMs). Based on the change of the cyclic voltammetric peak current and ... Impedance titration was used to determine the surface dissociation characteristics of short-chain carboxyl mercaptan self-assembled monolayers (SAMs). Based on the change of the cyclic voltammetric peak current and the charge-transfer resistance, which was related to pH value of the solution, the surface pKa of mercaptoacetic acid(MA), 3-mercaptopropionic acid(MPA) and ω-mercaptohexanic acid(MHA) self-assembled membranes, with ionic strength being 0.1 mol/L, were determined to be 5.20, 4.80, 7.40, respectively. In addition, factors such as time needed for assembling, structure of monolayers and ionic strength, which effected the surface pKa, were studied as well. Such surface pKa shifts were sufficiently explained by interactions between interfacial molecules and hydrophobicity. 展开更多
关键词 impedance titration surface pKa self-assembled monolayers mercaptoacetic acid(MA) 3-mercaptopropionic acid (MPA) ω-mercaptohexanic acid(MHA)
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The Pattern Growth of Carbon Nanotubes by Self-assembled Monolayers Techniques
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作者 KUOChengtzu KUODeshan CHENPolin 《材料导报》 EI CAS CSCD 2004年第8期79-83,共5页
The well controllable selective growth of carbon nanotubes (CNTs)on the desired area is an important issue for their future applications. In this study, a novel method for selective growth of CNTs was proposed by usin... The well controllable selective growth of carbon nanotubes (CNTs)on the desired area is an important issue for their future applications. In this study, a novel method for selective growth of CNTs was proposed by using the technology of self-assembly monolayers (SAMs) and the Fe-assisted CNTs growth. The Si wafers with the a : Si/Si3N4 layer patterns were first prepared by low pressure chemical vapor deposition (LPCVD)and lithography techniques to act as the substrates for selective deposition of SAMs. The selectivity of SAMs from APTMS solution (N-(2-aminoethyl)-3-aminopropyltrimethoxsilane) is based on its greater reactivity of head group on a-Si than Si3N4 films. The areas of pattern with SAMs will first chelate the Fe3+ ions by their diamine-terminated group. The Fe3+ ions were then consolidated to become Fe-hydroxides in sodium boron hydride solution to form the Fe-hydroxides pattern. Finally, the Fe-hydroxides pattern was pretreated in H plasma to become a well-distributed Fe nano-particles on the surface, and followed by CNTs deposition using Fe as catalyst in a microwave plasma-chemical vapor deposition (MP-CVD) system to become the CNTs pattern. The products in each processing step, including microstructures and lattice images of CNTs, were characterized by contact angle measurements, scanning electron microscopy (SEM), XPS, Auger spectroscopy, transmission electron microscopy (TEM) and high resolution TEM (HRTEM)deposition. The results show that the main process parameters include the surface activation process and its atmosphere, consolidation time and temperature, H plasma pretreatment. The function of each processing step will be discussed. 展开更多
关键词 sams 碳纳米管 自组装 CNTS CVD TEM
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A New Thionine Modified Electrode by Anchorage to Bi-(2-aminoethyl)-aminodithiocarboxyl Acid Self-assembled Monolayers through Coordination with Cu^(2+#)
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作者 Jing Juan XU Hong Yuan CHEN Rui Qun FANG (Department of Chemistry, the State Key Laboratory of Coordination Chemistry, Nanjing University, Nanjing, 210093) 《Chinese Chemical Letters》 SCIE CAS CSCD 1997年第11期993-996,共4页
A new method for preparing chemically modified gold electrode by anchoring thionine to self-assembled bi - (2 -aminoethyl) -aminodithiocarboxyl acid(BANTC) monolayers through coordination with Cu2+ is described. This... A new method for preparing chemically modified gold electrode by anchoring thionine to self-assembled bi - (2 -aminoethyl) -aminodithiocarboxyl acid(BANTC) monolayers through coordination with Cu2+ is described. This thionine modified electrode exhibits two-new redox couples.Two protons were involved in the electrochemical process undergone by the couple I in the pH range of 5.0-10.0. The apparent surface electron transfer rate constant is about 0.050s-1. 展开更多
关键词 aminodithiocarboxyl Acid self-assembled monolayers through Coordination with Cu A New Thionine Modified Electrode by Anchorage to Bi aminoethyl
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Tunneling Electron Induced Fluorescence from Single Porphyrin Molecules Decoupled by Striped-Phase Octanethiol Self-assembled Monolayer
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作者 邝艳敏 郁杰 +4 位作者 骆阳 朱嘉哲 廖源 张杨 董振超 《Chinese Journal of Chemical Physics》 SCIE CAS CSCD 2016年第2期157-160,I0001,共5页
We investigate tunneling electron induced luminescence from isolated single porphyrin molecules that are decoupled by striped-phase self-assembled monolayer of octanethiol from the underneath Au(111) substrate. Intr... We investigate tunneling electron induced luminescence from isolated single porphyrin molecules that are decoupled by striped-phase self-assembled monolayer of octanethiol from the underneath Au(111) substrate. Intrinsic single-molecule electroluminescence has been realized by such decoupling at both bias polarities. The photon emission intensity acquired from the molecular lobe is found stronger than that from the molecular center. These re- sults provide useful information on the understanding of electroluminescent behavior and mechanism in molecular tunnel junctions. 展开更多
关键词 Scanning tunneling microscope induced luminescence PLASMONICS PORPHYRIN Octanethiol self-assembled monolayer Striped-phase
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