期刊文献+
共找到34篇文章
< 1 2 >
每页显示 20 50 100
Monitoring Xylem Transport in the Stem of Lilium lancifolium Using Fluorescent Dye 5(6)-Carboxyfluorescein Diacetate
1
作者 Yulin Luo Panpan Yang +3 位作者 Mengmeng Bi Leifeng Xu Fang Du Jun Ming 《Phyton-International Journal of Experimental Botany》 SCIE 2024年第5期1057-1066,共10页
The xylem undergoes physiological changes in response to various environmental conditions during the process of plant growth.To understand these physiological changes,it is extremely important to observe the transport... The xylem undergoes physiological changes in response to various environmental conditions during the process of plant growth.To understand these physiological changes,it is extremely important to observe the transport of xylem.In this study,the distribution and structure of vascular bundle in Lilium lancifolium were observed using the method of semithin section.Methods for introducing a fluorescent tracer into the xylem of the stems were evaluated.Then,the transport rule of 5(6)-Carboxyfluorescein diacetate(CFDA)in the xylem of the stem of L.lancifolium was studied by fluorescence dye in live cells tracer technology.The results showed that the vascular bundles of L.lancifolium were scattered in the basic tissue,the peripheral vascular bundles were smaller and densely distributed,and the closer to the center,the larger the volume of vascular bundles and the more sparsely distributed.The vascular bundles of L.lancifolium are limited external tenacity vascular bundles,which are composed of phloem and xylem.The most suitable method for CFDA labeling the xylem of isolated stem segments of L.lancifolium was solution soaking for 24 h.The running speed of CF in the isolated stem was 0.3 cm/h,which was consistent with the running speed of the material in the field.CF could be transported between the xylem and parenchyma cells,indicating that the material transport in the xylem could be through the symplastic pathway.The above results laid a foundation for the study of the xylem transport mechanism and the xylem pathogen disease of lily. 展开更多
关键词 LILIUM xylem transport STEM fluorescent dye CFDA
下载PDF
Simple substituents make big differences in photophysical performances of 2,1,3-benzothiadizole-conjugated spiropyrans
2
作者 Xiaoming Zhu Yunting Liu +1 位作者 Mingyue Cao Guangle Niu 《Chinese Journal of Chemical Engineering》 SCIE EI CAS CSCD 2024年第8期53-59,共7页
Developing multifunctional spiropyran dyes is of particular importance in diverse applications.In the present study,we synthesized two 2,1,3-benzothiadiazole-conjugated spiropyrans(BT-SP-NO2and BTSP-NMe2)with distinct... Developing multifunctional spiropyran dyes is of particular importance in diverse applications.In the present study,we synthesized two 2,1,3-benzothiadiazole-conjugated spiropyrans(BT-SP-NO2and BTSP-NMe2)with distinct substituents.These donor-acceptor-structured spiropyrans exhibited typical twisted intramolecular charge transfer features and strong emissions in low-polarity solvents with fluorescence quantum yields(QYs)of up to 90.7%.Like traditional spiropyrans,the electron-acceptor-substituted BT-SP-NO2exhibited excellent photochromic behavior under multiple alternating UV—Vis irradiation,while the electron-donor-substituted BT-SP-NMe2was an acidochromic dye.In addition,the substituent groups distinctly affected the packing modes of these spiropyrans in the solid state.BTSP-NMe2showed a much stronger solid-state emission(QY of 59.0%)than BT-SP-NO2.Moreover,these two dyes were utilized as biocompatible probes for the specific light-up imaging of lipid droplets. 展开更多
关键词 SPIROPYRAN 2 1 3-Benzothiadiazole PHOTOCHROMISM fluorescent dye Fluorescence imaging
下载PDF
Synthesis and application of rhodamine-based fluorescent probe dyes with spacer linker arm 被引量:1
3
作者 Yong Gao Jian Li Li Zhen Shi 《Chinese Chemical Letters》 SCIE CAS CSCD 2007年第6期667-669,共3页
When rhodamine-based fluorescent probe dyes are used to track target molecules they always perturb the behavior of target molecules because of steric hindrance effect. In order to minimize potential steric problems, a... When rhodamine-based fluorescent probe dyes are used to track target molecules they always perturb the behavior of target molecules because of steric hindrance effect. In order to minimize potential steric problems, a kind of rhodamine-based fluorescent probe dye with spacer linker arm was designed and synthesized and its application in immunofluorescence histochemistry was investigated. 展开更多
关键词 RHODAMINE fluorescent probe dye Spacer linker arm SYNTHESIS Immunofluorescence histochemistry
下载PDF
Novel Water Soluble Fluorescent Trimethine Indocyanines Containing N-ρ-Carboxybenzyl Group 被引量:1
4
作者 Li Qiu WANG Xiao Jun PENG +2 位作者 Rong ZHANG Guo Quan XU Jing Nan CUI 《Chinese Chemical Letters》 SCIE CAS CSCD 2003年第1期22-24,共3页
Two fluorescent indocyanine dyes containing at least one p-carboxybenzyl group on the nitrogen atoms in the heterocyclic rings were designed and synthesized. Their absorption maxima were 549 nm and 551 nm in water re... Two fluorescent indocyanine dyes containing at least one p-carboxybenzyl group on the nitrogen atoms in the heterocyclic rings were designed and synthesized. Their absorption maxima were 549 nm and 551 nm in water respectively. They had good water solubility and photostability. 展开更多
关键词 Sulfoindocyanine fluorescent dyes biological label.
下载PDF
Synthesis of New Near-infrared Fluorescent Dyes 被引量:1
5
作者 Jiang LONG Yong Mei WANG Ji Ben MENG (Department of Chemistry, Nankai University, Tianjin 300071) 《Chinese Chemical Letters》 SCIE CAS CSCD 1999年第8期659-660,共2页
A new near-infrared fluorescent dye, 9-N-(2-hydroxyethyl)-N-methylamino-6-carbethoxy-5H-benzo[a]phenoxazin-5-one 1, was prepared from the reaction of N-(2-hydroxyethyl)-N-methyl-4-nitrosoaniline hydrochloride and ethy... A new near-infrared fluorescent dye, 9-N-(2-hydroxyethyl)-N-methylamino-6-carbethoxy-5H-benzo[a]phenoxazin-5-one 1, was prepared from the reaction of N-(2-hydroxyethyl)-N-methyl-4-nitrosoaniline hydrochloride and ethyl 1,3-dihydroxynaphthoate. Five more fluorescent compounds were synthesized by the reaction of the resulting dye 1 with appropriate amino acid or carboxylic acids. 展开更多
关键词 fluorescent dyes benzo[a]phenoxazinone fluorogenic labels
下载PDF
Synthesis and Fluorescence Spectra of Triazolylcoumarin Fluorescent Dyes 被引量:1
6
作者 彭先福 李洪启 《Journal of Donghua University(English Edition)》 EI CAS 2009年第1期26-30,共5页
Much attention is devoted to fluorescent dyes especially those with potential in versatile applications.Reactions under "click" conditions between nonfluorescent 3-azidocoumarins and terminal alkynes produce... Much attention is devoted to fluorescent dyes especially those with potential in versatile applications.Reactions under "click" conditions between nonfluorescent 3-azidocoumarins and terminal alkynes produced 3-(1,2,3-triazol-1-yl)coumarins,a novel type of fluorescent dyes with intense fluorescence.The structures of the new coumarins were characterized by 1H NMR,MS,and IR spectra.Fluorescence spectra measurement demonstrated excellent fluorescence performance of the triazolylcoumarins and this click reaction is a promising candidate for bioconjugation and bioimaging applications since both azide and alkynes are quite inert to biological systems. 展开更多
关键词 triazolylcoumarin fluorescent dye CLICKCHEMISTRY fluorescence spectra
下载PDF
Syntheses of Some Organic Fluorescent Dyes for Security Tickers
7
作者 LIJun-fen BAIGuan LINPei-hua TIANMei-lin DONGChuan LIDu-xin 《Chemical Research in Chinese Universities》 SCIE CAS CSCD 2004年第2期216-220,共5页
Five organic fluorescence dyes were synthesized by two- or three-step reactions. These synthetic methods have an advantage of the simple processes, low costs and high yields. The compositions of the five compounds a... Five organic fluorescence dyes were synthesized by two- or three-step reactions. These synthetic methods have an advantage of the simple processes, low costs and high yields. The compositions of the five compounds are characterized by IR, 1H NMR, elemental analyses and fluorescence spectroscopies. The quantum yields of fluorescence were measured. 展开更多
关键词 Organic fluorescence dye Security sticker Synthesis
下载PDF
Green Light-Emitting Organic Electroluminescent Device with a New Fluorescent Dye Dispersed in Poly(N-vinylcarbazole) Emitter Layer
8
作者 Yong QIU De Qiang ZHANG +1 位作者 Zhi Liang XIE Xiao Xuan LIU(Department of Chemistry Tsinghua University, Beijing 100084) 《Chinese Chemical Letters》 SCIE CAS CSCD 1997年第1期79-80,共2页
Double-layer organic electroluminescent devices have been constructed. A new fluorescent dye, 9,10-bis(phenylethynyl)anthracence, was chosen as the dopant which was molecularly dispersed in the polymer film, and green... Double-layer organic electroluminescent devices have been constructed. A new fluorescent dye, 9,10-bis(phenylethynyl)anthracence, was chosen as the dopant which was molecularly dispersed in the polymer film, and green light was observed from the device with luminance of 130cd/m(2) at 17V. 展开更多
关键词 Green Light-Emitting Organic Electroluminescent Device with a New fluorescent Dye Dispersed in Poly N-VINYLCARBAZOLE Emitter Layer
下载PDF
Chromaticity Characteristics of Fluorescent Dyes in Cloth
9
作者 李戎 陈东辉 《Journal of Donghua University(English Edition)》 EI CAS 2004年第4期78-81,共4页
Chromaticity characteristics of several fluorescent dyes in cloth were studied in terms of chromaticity diagram. The dominant wavelength and color purity of the samples were calculated and chromaticity diagrams were d... Chromaticity characteristics of several fluorescent dyes in cloth were studied in terms of chromaticity diagram. The dominant wavelength and color purity of the samples were calculated and chromaticity diagrams were drawn to provide countermeasures with which the perceptual color attributes such as hue and saturation are correlated. 展开更多
关键词 chromaticity diagram fluorescent dyes dominant wavelength color purity.
下载PDF
Multicolor Anti-counterfeiting Strategy and Synchronous High Capacity Storage Based on Acidochromic Organic Fluorescent Materials
10
作者 Ying Fang Jun-Yu Luan +6 位作者 Li-Hao Liu Ying-Qing Huang Yi-Ning Luo Kun-Peng Wang Shaojin Chen Hai-Yu Hu Zhi-Qiang Hu 《Chinese Journal of Chemistry》 SCIE CAS CSCD 2024年第19期2363-2369,共7页
Comprehensive Summary Many industries are plagued by economic losses and product failures caused by counterfeit goods.Therefore,advanced anti-counterfeiting techniques are continuously needed.In this study,we construc... Comprehensive Summary Many industries are plagued by economic losses and product failures caused by counterfeit goods.Therefore,advanced anti-counterfeiting techniques are continuously needed.In this study,we constructed a series of acid-base sensitive cyclic chalcone dyes A—F by modifying different electron-donating groups.Differences in acid sensitivity of different structures are well rationalised by NMR and theoretical calculations.Aniline is difficult to protonate than fatty amines,so there is a difference in fluorescence.Hiding and anti-counterfeiting of information is achieved by this phenomenon.Powder X and Y are the anti-counterfeit fluorescent powder containing montmorillonite and cyclic chalcone,which have orange fluorescence and the very similar appearance.However,under the influence of acid the Powder X containing triphenylamine modified cyclic chalcone shows red shifted fluorescence and Powder Y containing morpholino and diethylamino groups modified cyclic chalcone shows blue shifted fluorescence.Therefore,the anti-counterfeiting strategy based on cyclic chalcone is not only limited to UV-irradiated fluorescence development,but also has more colorization and pattern variations with the aid of acid developer.Data encryption and decryption of numbers,English alphabets and Chinese characters have been realized using A—F,which have great potential for practical applications. 展开更多
关键词 Cyclic chalcones ANTI-COUNTERFEITING ENCRYPTION Acid sensitivity Organic fluorescent dye
原文传递
Effects of Taxotere on invasive potential and multidrug resistance phenotype in pancreatic carcinoma cell line SUIT-2 被引量:12
11
作者 Edgar Staren Takeshi Iwamura +1 位作者 Hubert Appert John Howard 《World Journal of Gastroenterology》 SCIE CAS CSCD 2001年第1期143-148,共6页
INTRODUCTIONDevelopment of drug-resistance to chemotherapyand subsequent metastasis of tumor are primarilyresponsible for treatment failure and the death fromcancer. There have been many previous studies onthe relatio... INTRODUCTIONDevelopment of drug-resistance to chemotherapyand subsequent metastasis of tumor are primarilyresponsible for treatment failure and the death fromcancer. There have been many previous studies onthe relationship between expression of multidrugresistance (MDR) phenotype P-glycoprotein (P-gp)and the malignant properties of tumors, but theresults are often conflicting[1-8]. The difference intumor types or MDR phenotype induced by specificagents might account for this discrepancy. Taxotere(TXT), a member of the family of taxanes, hasantitumor activity through its effect of promotingthe polymerization of tubulin[9,10]. 展开更多
关键词 Carcinoma Pancreatic Neoplasms TAXOIDS Antineoplastic Agents Phytogenic Biocompatible Materials Collagen Drug Combinations Drug Resistance Multiple Drug Resistance Neoplasm fluorescent Dyes Humans In Vitro LAMININ Neoplasm Invasiveness P-Glycoprotein Paclitaxel derivatives Phenotype PROTEOGLYCANS RNA Neoplasm Research Support Non-U.S. Gov't Rhodamine 123 Tumor Cells Cultured
下载PDF
Enhancement of electroluminescent properties of organic optoelectronic integrated device by doping phosphorescent dye 被引量:1
12
作者 雷疏影 钟建 +2 位作者 周殿力 朱方云 邓朝旭 《Chinese Physics B》 SCIE EI CAS CSCD 2017年第11期434-440,共7页
Organic optoelectronic integrated devices(OIDs) with ultraviolet(UV) photodetectivity and different color emitting were constructed by using a thermally activated delayed fluorescence(TADF) material 4, 5-bis(ca... Organic optoelectronic integrated devices(OIDs) with ultraviolet(UV) photodetectivity and different color emitting were constructed by using a thermally activated delayed fluorescence(TADF) material 4, 5-bis(carbazol-9-yl)-1, 2-dicyanobenzene(2 CzPN) as host. The OIDs doping with typical red phosphorescent dye [tris(1-phenylisoquinoline)iridium(Ⅲ), Ir(piq)3], orange phosphorescent dye {bis[2-(4-tertbutylphenyl)benzothiazolato-N,C-(2')]iridium(acetylacetonate),(tbt)2 Ir(acac)}, and blue phosphorescent dye [bis(2, 4-di-fluorophenylpyridinato)-tetrakis(1-pyrazolyl)borate iridium(Ⅲ), FIr6] were investigated and compared. The(tbt)2 Ir(acac)-doped orange device showed better performance than those of red and blue devices, which was ascribed to more effective energy transfer. Meanwhile, at a low dopant concentration of 3 wt.%, the(tbt)2 Ir(acac)-doped OIDs showed the maximum luminance, current efficiency, power efficiency of 70786 cd/m^2, 39.55 cd/A, and 23.92 lm/W, respectively, and a decent detectivity of 1.07 × 10^11 Jones at a bias of -2 V under the UV-350 nm illumination. This work may arouse widespread interest in constructing high efficiency and luminance OIDs based on doping phosphorescent dye. 展开更多
关键词 organic optoelectronic integrated device thermally activated delayed fluorescence host phosphorescent dye high luminance
下载PDF
SUPPRESSION OF SIDELOBES IN SINGLE-PHOTON 4PI CONFOCAL MICROSCOPY BY FORSTER RESONANT ENERGY TRANSFER
13
作者 JIANFANG CHEN YA CHENG 《Journal of Innovative Optical Health Sciences》 SCIE EI CAS 2012年第3期28-33,共6页
Recently,we theoretically demonstrate that utilization of silica nanobeads co-doped with Cy3 and Cy5 molecules instead of single dye molecules asfluorescent labels can enable optical resolutions far beyond the diffrac... Recently,we theoretically demonstrate that utilization of silica nanobeads co-doped with Cy3 and Cy5 molecules instead of single dye molecules asfluorescent labels can enable optical resolutions far beyond the diffraction-limit.Here,we show that by combining the 4Pi microscopy and the novelfluorescent label,it is possible to completely suppress the sidelobes in 4Pi focal spot and significantly enhance the optical resolution in the axial direction. 展开更多
关键词 fluorescent dye 4Pi microscopy far-field imaging super-resolution CONFOCAL
下载PDF
Review on Recent Developments of Fluorescent Oxygen and Carbon Dioxide Optical Fiber Sensors 被引量:9
14
作者 Cheng-Shane CHU Yu-Lung LO Ti-Wen SUNG 《Photonic Sensors》 SCIE EI CAS 2011年第3期234-250,共17页
Oxygen and carbon dioxide sensors are involved in many chemical and biochemical reactions. Consequently, considerable efforts over years have been devoted to discover and improve suitable techniques for measuring gas ... Oxygen and carbon dioxide sensors are involved in many chemical and biochemical reactions. Consequently, considerable efforts over years have been devoted to discover and improve suitable techniques for measuring gas concentrations by optical fiber sensors. Optical gas sensors consist of a gas-sensitive dye entrapped in a matrix with a high permeability to gas. With such sensors, gas concentration is evaluated based upon the reduction in luminescence intensity caused by gas quenching of the emitting state. However, the luminescence quenching effect of oxygen is highly sensitive to temperature. Thus, a simple, low-cost plastic optical fiber sensor for dual sensing of temperature and oxygen is presented. Also, a modified Stern-Volmer model is introduced to compensate for the temperature drift while the temperature is obtained by above dual sensor. Recently, we presented highly-sensitive oxygen and dissolved oxygen sensors comprising an optical fiber coated at one end with platinum (II) meso-tetrakis(pentafluorophenyl)porphyrin (PtTFPP) and PtTFPP entrapped core-shell silica nanoparticles embedded in an n-octyltriethoxysilane(Octyl-triEOS)/tetraethylorthosilane (TEOS) composite xerogel. Also, two-dimensional gas measurement for the distribution of chemical parameters in non-homogeneous samples is developed and is of interest in medical and biological researches. 展开更多
关键词 OXYGEN carbon dioxide fluorescent dye optical fiber temperature effect modified Stem-Volmermodel core-shell silica nanoparticles
原文传递
Upconversion nanoparticles for differential imaging of plant cells and detection of fluorescent dyes 被引量:2
15
作者 吴笑峰 胡盼 +7 位作者 胡仕刚 陈增辉 严焕元 唐志军 席在芳 余意 戴港涛 刘云新 《Journal of Rare Earths》 SCIE EI CAS CSCD 2016年第2期208-220,共13页
Upconversion NaLuF4 nanoparticles were synthesized by the solvothermal method which could emit multicolor visible light under the excitation of 980 nm near-infrared (NIR) photons. These upconversion nanoparticles (UCN... Upconversion NaLuF4 nanoparticles were synthesized by the solvothermal method which could emit multicolor visible light under the excitation of 980 nm near-infrared (NIR) photons. These upconversion nanoparticles (UCNPs) with an acidic ligand could rapidly capture the basic rhodamine-B (RB) in plant cells to generate a close UCNPs@RB system. RB could efficiently absorb the green fluorescence from NaLuF4:18 mol.%Yb3+,2 mol.%Er3+ UCNPs and then emitted red light in the UCNPs@RB system by a robust luminescence resonance energy transfer (LRET) from UCNPs to RB. The detection limit of RB with these upconversion fluo-rescent nanoprobes could reach 0.25μg/cm3 in plant cell even under an ultra low excitation power source of 0.2 W/mm2. This LRET phenomenon was also extended to NaLuF4:18 mol.%Yb3+,0.5 mol.%Tm3+@Sodium fluorescein (SF) system. In addition, the differ-ential imaging could be achieved by successively incubating plant cells with fluorescent dyes and UCNPs. The fluorescent dyes ag-gregated in cell wall while UCNPs with surface modification distributed both in cell wall and cytoplasm, so that UCNPs@Dyes formed in cell walls which could emit multicolor light by LRET which was different from the emission in cytoplasm with only UCNPs. 展开更多
关键词 UPCONVERSION LUMINESCENCE fluorescent dye cell imaging DETECTION rare earths
原文传递
Synthesis, properties and application of novel 5,6,5,6-tetracyclic pyrazine/pyrrole-fused unsymmetric bis(BF2) fluorescent dyes:BOPYPYs 被引量:1
16
作者 Xindong Jiang Shuai Yue +4 位作者 Kepeng Chen Zhumei Shao Chen Li Yajun Su Jianzhang Zhao 《Chinese Chemical Letters》 SCIE CAS CSCD 2019年第12期2271-2273,共3页
Novel 5,6,5,6-tetracyclic pyrazine/pyrrole-fused unsymmetric bis(BF2) fluorescent dyes(BOPYPYs) were obtained by reaction of pyrrole-2-carboxaldehyde with 1-(pyrazin-2-yl)hydrazine in the presence of Et3 N-BF3·Et... Novel 5,6,5,6-tetracyclic pyrazine/pyrrole-fused unsymmetric bis(BF2) fluorescent dyes(BOPYPYs) were obtained by reaction of pyrrole-2-carboxaldehyde with 1-(pyrazin-2-yl)hydrazine in the presence of Et3 N-BF3·Et2 O for the first time.The absorption maxima of pyrazine-fused BOPYPY are obviously bathochromic shifts,in contrast to those of the reported BOPPY,indicating that the discrepant substitute groups between pyridine and pyrazine result in the remarkable wavelength difference.The new series of BO PYPYs possess high molar extinction coefficients,high fluorescence quantum yields,and larger Stokes shifts.A Knoevenagel reaction of BOPYPY with 4-dimethylaminobenzaldehyde smoothly produced the dye with the extension of π-conjugation.Dimethylamino-containing BOPYPY as a pH-responsive fluorescent sensor could detect pH value. 展开更多
关键词 BOPYPY PYRAZINE fluorescent dye Unsymmetric PH
原文传递
Synthesis, Photophysical Properties and TD-DFT Calculation of Fluorescent Dyes Based on Pyrenylthiazoles
17
作者 TONG Dingyi DUAN Haifeng +4 位作者 WANG Jiajun ZHANG Li CAO Jungang WEI Zhonglin LIN Yingjie 《Chemical Research in Chinese Universities》 SCIE CAS CSCD 2014年第1期4-8,共5页
Pyrene is one of significant fluorescent material and its fluorescence properties are excellent.It has been widely used for such as OLEDs,DSCs,LMOGs and so on[1-5].What's more,pyrene has been successfully applied to ... Pyrene is one of significant fluorescent material and its fluorescence properties are excellent.It has been widely used for such as OLEDs,DSCs,LMOGs and so on[1-5].What's more,pyrene has been successfully applied to signaling the presence of metal ions,nucleic acids,proteins and so on[6-9].Thus,the development of the fluorescent dyes based on pyrene has been a research focus[10-12].However,the synthesis of many pyrene derivatives needed the high-cost coupling reaction such as Heck reaction and Suzuki reaction[1-3,10-12]. 展开更多
关键词 PYRENE THIAZOLE fluorescent dye Benzene-thiazole stacking TD-DFT calculation
原文传递
Ratiometric Fluorescent Probe Based on Novel Red-emission BODIPY for Determination of Bovine Serum Albumin
18
作者 SONG Fengling XUE Yingying WANG Xu WANG Jingyun XIONG Xiaoqing PENG Xiaojun 《Chemical Research in Chinese Universities》 SCIE CAS CSCD 2014年第5期738-742,共5页
A novel red-emission boron-dipyrromethene(BODIPY) dye with a pyrrole ring was synthesized simply via one-pot reaction. The spectral properties of it were investigated under the conditions of different solvents. The ... A novel red-emission boron-dipyrromethene(BODIPY) dye with a pyrrole ring was synthesized simply via one-pot reaction. The spectral properties of it were investigated under the conditions of different solvents. The results show that the as-prepared BODIPY dye is extremely sensitive to solvent polarity, and the fluorescent emission enhances with the decrease of solvent polarity. In aqueous buffer, the addition of bovine serum albumin leads to a ratiometric change in absorption spectra with an association constant of 1.16×10^6 L/mol. Meanwhile, the fluorescence emission increases greatly at 622 nm but changes slightly at 575 nm. The response time is very short(less than 3 min), and the changes of color can be noticed by naked eyes. Bovine serum albumin can be detected by this ratiometric fluorescence probe, but other proteins or enzymes cannot be detected by this method, which indicates that this novel dye has high selectivity towards bovine serum albumin. The reason is that bovine serum albumin has suitable hydro- phobic cavities for binding with the dye. In addition, the dye molecule can penetrate cell membrane easily and make a fast fluorescent stain, which makes it a potential probe for living-cell fluorescence imaging. 展开更多
关键词 fluorescent dye Boron-dipyrromethene(BODIPY) Bovine serum albumin RATIOMETRIC High selectivity
原文传递
Aggregation Control of Hemicyanine Fluorescent Dye by Using of Cucurbit[7]uril and Pillar[6]arene
19
作者 Meijiao Cao Fang Hu +4 位作者 Xie Han Yufeng Zhang Di Wu Sheng Hua Liu Jun Yin 《Chinese Journal of Chemistry》 SCIE CAS CSCD 2015年第3期351-355,共5页
The aggregation of cyanine-based fluorescent dyes easily results in the fluorescence quenching,which limits the applications in biological science and materials science.So developing an efficient method to adjust the ... The aggregation of cyanine-based fluorescent dyes easily results in the fluorescence quenching,which limits the applications in biological science and materials science.So developing an efficient method to adjust the aggregation of cyanine dyes is very significant.In this work,we employ two different macrocyclic hosts pillar[6]arene(DEP[6])and cucurbit[7]uril(CB[7])to investigate their effects towards fluorescence spectra of dye 1.The result indicates that both of them can disrupt the aggregation of dye 1,resulting in the enhancement of its fluorescence intensity.Interestingly,investigation on the corresponding titration experiments of 1H NMR and density functional theory cal-culations shows that CB[7]and DEP[6]play different roles in the process of disaggregation. 展开更多
关键词 HEMICYANINE fluorescence dye arene uril aggregation control
原文传递
Enhancement of open circuit voltage in organic solar cells by doping a fluorescent red dye
20
作者 Qing LI Junsheng YU +2 位作者 Yue ZANG Nana WANG Yadong JIANG 《Frontiers in Energy》 CSCD 2012年第2期179-183,共5页
The open circuit voltage (Voc) of small- molecule organic solar cells (OSCs) could be improved by doping suitable fluorescent dyes into the donor layers. In this paper, 4-(dicyanomethylene)-2-t-butyl-6-(1,1,7,7... The open circuit voltage (Voc) of small- molecule organic solar cells (OSCs) could be improved by doping suitable fluorescent dyes into the donor layers. In this paper, 4-(dicyanomethylene)-2-t-butyl-6-(1,1,7,7- tetramethyljulolidyl-9-enyl)-4H-pyran (DCJTB) was used as a dopant, and the performance of the OSCs with different DCJTB concentration in copper phthalocyanine (CuPc) was studied. The results showed that the Voc of the OSC with 50% of DCJTB in CuPc increased by 15%, compared with that of the standard CuPc/fullerene (C60) device. The enhancement of the Voc was attributed to the lower highest occupied molecular orbital (HOMO) level in the DCJTB than that in the CuPc. Also, the light absorption intensity is enhanced between 400 and 550nm, where CuPc and C6o have low absorbance, leading to a broad absorption spectrum. 展开更多
关键词 organic solar cells (OSCs) open circuit voltage fluorescent dye doping 4-(dicyanomethylene)-2- t-butyl-6-( 1 1 7 7-tetramethyljulolidyl-9-enyl)-4H-pyran (DCJTB)
原文传递
上一页 1 2 下一页 到第
使用帮助 返回顶部