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Biomass valorization via electrocatalytic carbon–carbon bond cleavage
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作者 Keping Wang Zhenyan Guo +5 位作者 Min Zhou Ying Yang Lanyun Li Hu Li Rafael Luque Shunmugavel Saravanamurugan 《Journal of Energy Chemistry》 SCIE EI CAS CSCD 2024年第4期542-578,共37页
Renewable electrocatalytic upgrading of biomass feedstocks into valuable chemicals is one of the promising strategies to relieve the pressure of traditional energy-based systems.Through electrocatalytic carbon–carbon... Renewable electrocatalytic upgrading of biomass feedstocks into valuable chemicals is one of the promising strategies to relieve the pressure of traditional energy-based systems.Through electrocatalytic carbon–carbon bond cleavage of high selectivity,various functionalized molecules,such as organic acids,amides,esters,and nitriles,have great potential to be accessed from biomass.However,it has merely received finite concerns and interests in the biorefinery.This review first showcases the research progress on the electrocatalytic conversion of lipid/sugar-and lignin-derived molecules(e.g.,glycerol,mesoerythritol,xylose,glucose,1-phenylethanol,and cyclohexanol)into organic acids via specific carbon–carbon bond scission processes,with focus on disclosing reaction mechanisms,recognizing actual active species,and collecting feasible modification strategies.For the guidance of further extensive studies on biomass valorization,organic transformations via a variety of reactions,including decarboxylation,ring-opening,rearrangement,reductive hydrogenation,and carboxylation,are also disclosed for the construction of similar carbon skeletons/scaffolds.The remaining challenges,prospective applications,and future objectives in terms of biomass conversion are also proposed.This review is expected to provide references to develop renewed electrocatalytic carbon–carbon bond cleavage transformation paths/strategies for biomass upgrading. 展开更多
关键词 ELECTROCATALYSIS Biomass conversion carbon-carbon bond cleavage Organic acids
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The Novel Selective Reduction of the C-C Triple Bond
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作者 Gu, WX Wu, AX Pan, XF 《Chinese Chemical Letters》 SCIE CAS CSCD 2000年第10期847-848,共2页
A novel reduction system is reported here in which the compounds with terminal C-C triple bond and disubstituted C-C triple bond react with NaBH4/Pd(PPh3)(4) in a base condition and only terminal C-C triple bond is re... A novel reduction system is reported here in which the compounds with terminal C-C triple bond and disubstituted C-C triple bond react with NaBH4/Pd(PPh3)(4) in a base condition and only terminal C-C triple bond is reduced. 展开更多
关键词 selective reduction C-C triple bond Pd(PPh3)(4)
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Synthesis,Structure and Properties of a Novel Infinite Triple Helices Coordination Polymer{[Co(4,4'-bipyridine)(4,4'azobispyridine)_(2)(NCS)_(2)]·H_(2)O}_(n) 被引量:5
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作者 LI Bao—Long LI Bao—Zong +1 位作者 XU Zhenga CHEN Jiu—Tong 《无机化学学报》 SCIE CAS CSCD 北大核心 2003年第7期745-749,共5页
The novel complex{[Co(bipy)(azpy)_(2)(NCS)_(2)]·H_(2)O}n(where bipy=4,4′bipyridine,azpy=4,4′azobisp yridine)has been synthesized and characterized by elemental analyses,IR,UV,thermal analyses,and variable tempe... The novel complex{[Co(bipy)(azpy)_(2)(NCS)_(2)]·H_(2)O}n(where bipy=4,4′bipyridine,azpy=4,4′azobisp yridine)has been synthesized and characterized by elemental analyses,IR,UV,thermal analyses,and variable temperature magnetic susceptibility.The crystal(C_(32)H_(26)CoN_(12)OS_(2),Mr=717.70)belongs to the orthorhombic,space group Pnna,a=2.21312(16)nm,b=1.40403(10)nm,c=1.14237(8)nm,V=3.5497(4)nm^(3),Z=4,Dc=1.343g·cm^(-3),μ=0.645mm^(-1),F(000)=1476,and final R_(1)=0.0691,wR_(2)=0.1129 for 231 parameters and 1674 observed reflections[I>2.00σ(I)].The Co(Ⅱ)atom is,in a distorted octahedral geometry,coordinated by six nitrogen atoms from two bridging bipy,two monodentate azpy,and two thiocyanate groups.The bridging ligand bipy links Co(Ⅱ)atoms to form the infinite“rod"with terminal coordination azpy ligand acting as sidearms.Unprecedented three parallel interpenetrating two dimensional(4,4)networks and novel infinite triple helices are formed via hydrogen bonding interactions.CCDC:155588. 展开更多
关键词 crystal structure triple helices cobalt complex BIPYRIDINE hydrogen bonding
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A FACILE SYNTHESIS OF 2-TRIFLUOROMETHYLPYRROLE VIA 1,3-DIPOLAR CYCLOADDITION REACTION OF 2-TRIFLUOROMETHYLOXAZOLONE AND THE ACTIVATED CARBON-CARBON MULTIPLE BOND
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作者 Wei Sheng Tian Yu Qun Chen +1 位作者 Yong Rong Luo Xiao Wen Deng Shanghai Institute of Organic Chemistry,Academia Sinica,345 Lingling Lu,Shanghai 200032 《Chinese Chemical Letters》 SCIE CAS CSCD 1991年第3期217-220,共4页
The 1.3-dipolar cycloaddition reaction of 2-trifluoromethyl- oxazolone and the activated carbon-carbon multiple bond was studied and gave a convenient way to synthesize 2-trifluoromethylpyrrole derivatives.
关键词 Cl A FACILE SYNTHESIS OF 2-TRIFLUOROMETHYLPYRROLE VIA 1 3-DIPOLAR CYCLOADDITION REACTION OF 2-TRIFLUOROMETHYLOXAZOLONE AND THE ACTIVATED carbon-carbon MULTIPLE bond PPM VIA
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The molecular orbital investigation of the metal triply bonded compounds M_2X_2(NMe_2)_4
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作者 LiMing FuWentao DengChuanyue 《西南师范大学学报(自然科学版)》 CAS CSCD 1994年第4期403-408,共6页
ThemolecularorbitalinvestigationofthemetaltriplybondedcompoundsM_2X_2(NMe_2)_4LiMing,FuWentao,DengChuanyue(D... ThemolecularorbitalinvestigationofthemetaltriplybondedcompoundsM_2X_2(NMe_2)_4LiMing,FuWentao,DengChuanyue(DepartmentofChemis... 展开更多
关键词 金属三重键 化合物 分子轨道
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Clean production of lactic acid by selective carbon-carbon bond cleavage of biomass feedstock over a novel carbon-bismuth oxychloride photocatalyst
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作者 Zulfiqar Ali Jiliang Ma +2 位作者 Dongnv Jin Rui Cui Runcang Sun 《Frontiers of Chemical Science and Engineering》 SCIE EI CSCD 2024年第2期69-81,共13页
The use of functional materials such as carbon-bismuth oxyhalides in integrated photorefineries for the clean production of fine chemicals requires restructuring.A facile biomass-assisted solvothermal fabrication of c... The use of functional materials such as carbon-bismuth oxyhalides in integrated photorefineries for the clean production of fine chemicals requires restructuring.A facile biomass-assisted solvothermal fabrication of carbon/bismuth oxychloride nanocomposites(C/BiOCl)was achieved at various temperatures.Compared with BiOCl and C/BiOCl-120,C/BiOCl-180 exhibited higher crystallinity,wider visible light absorption,and a faster migration/separation rate of photoinduced carriers.For the selective C–C bond cleavage of biomass-based feedstocks photocatalyzed by C/BiOCl-180,the xylose conversion and lactic acid yield were 100%and 92.5%,respectively.C/BiOCl-180 efficiently converted different biomass-based monosaccharides to lactic acid,and the efficiency of pentoses was higher than that of hexoses.Moreover,lactic acid synthesis was favored by all active radicals including superoxide ion(·O_(2)^(−)),holes(h^(+)),hydroxyl radical(·OH),and singlet oxygen(^(1)O_(2)),with·O_(2)^(−)playing a key role.The fabricated photocatalyst was stable,economical,and recyclable.The use of biomass-derived monosaccharides for the clean production of lactic acid via the C/BiOCl-180 photocatalyst has opened new research horizons for the investigation and application of C–C bond cleavage in biomass-based feedstocks. 展开更多
关键词 carbon-carbon bond cleavage biomass reforming C/BiOCl lactic acid photocatalysis
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基于有限元模拟分析混凝土桥梁接缝性能
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作者 刘慧 《黑龙江交通科技》 2024年第8期122-124,129,共4页
为分析混凝土桥梁接缝性能,运用理论知识借助有限元软件对单键齿胶接缝和三键齿胶接缝中的不同水平约束力以及不同胶层厚度对胶缝的抗剪性能影响进行模拟分析,同时分析单键齿胶接缝抗剪性能和环氧树脂弹性模量之间的关系,研究结果表明:... 为分析混凝土桥梁接缝性能,运用理论知识借助有限元软件对单键齿胶接缝和三键齿胶接缝中的不同水平约束力以及不同胶层厚度对胶缝的抗剪性能影响进行模拟分析,同时分析单键齿胶接缝抗剪性能和环氧树脂弹性模量之间的关系,研究结果表明:其他条件保持不变的情况下,当水平约束力增大和当胶层厚度增大时,单键齿胶接缝对应的抗压强度和极限抗剪承载力都随之增大;在单齿胶接缝的胶层厚度相同的情况下,当水平约束力增大时,对应模型的主拉应力变小,单键齿胶接缝的最大承载能力提升;其他条件保持不变的情况下,当水平约束力增大和胶层厚度增大时,单键齿胶接缝对应的抗压强度和极限抗剪承载力都随之增大;在三键齿胶接缝中胶层厚度相同时,当水平约束力增加时,整个模型的所能承受的主拉应力减小;在三键齿胶接缝中水平约束力相同时,当胶层厚度增加后,整个模型的最大主拉应力变大;当一定范围内的环氧树脂弹性模量增加时,对应的单键齿胶接缝最大抗剪承载力也随之增加。 展开更多
关键词 桥梁接缝 单键齿胶接缝 三键齿胶接缝 有限元分析 抗剪性能
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Single Covalent Bonding Structure in Fullerenes, Carbon Nanotubes and Closed Nanotubes
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作者 Geoffroy Auvert Marine Auvert 《Open Journal of Physical Chemistry》 2020年第3期183-195,共13页
The present paper deals with carbon in highly organized solids like graphene and its three-dimensional derivatives: fullerenes, carbon nanotubes and capped carbon nanotubes. It proposes an alternative to the typical b... The present paper deals with carbon in highly organized solids like graphene and its three-dimensional derivatives: fullerenes, carbon nanotubes and capped carbon nanotubes. It proposes an alternative to the typical bonding pattern exposed in literature. This novel bonding pattern involves alternating positively and negatively charged carbon atoms around hexagonal rings, then a few uncharged and partially bonded atoms close to the pentagon rings. The article focuses on fullerenes inscribed into a regular icosahedron, then addressing the most common fullerenes like C60. Carbon atoms are found to have predominantly three single bonds and less often two separated single </span><span style="font-family:Verdana;">bonds. The same pattern explains equally well carbon nanotubes and closed-tip</span><span style="font-family:Verdana;"> nanotubes, of which C70 is a special case. 展开更多
关键词 FULLERENES ICOSAHEDRON Carbon Nanotube Chemical bond Even-Odd Rule Graphene C60 C80 triple Series
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3D打印超级“拉曼码”用于多维信息加密及防伪研究 被引量:1
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作者 朱伟 余东 沈爱国 《光谱学与光谱分析》 SCIE EI CAS CSCD 北大核心 2023年第S01期139-140,共2页
发展兼具防伪和溯源功能的信息化材料,以实现“一物一码”将是打击假冒伪劣商品的重要手段。本文拟对多维空间内具备特异信号的叁键拉曼散射光谱进行可控编码,构建超容量的“拉曼码”并作为新型的信息化材料用于防伪及信息加密研究。在... 发展兼具防伪和溯源功能的信息化材料,以实现“一物一码”将是打击假冒伪劣商品的重要手段。本文拟对多维空间内具备特异信号的叁键拉曼散射光谱进行可控编码,构建超容量的“拉曼码”并作为新型的信息化材料用于防伪及信息加密研究。在课题组前期叁键拉曼标签制备基础上,进一步筛选和制备出六种既含乙烯基又可在聚合中保护叁键特征基团的小分子单体,随后通过乳液聚合方式制备出高灵敏、高光谱分辨、叁键拉曼散射在1800~2800 cm^(-1)区间可调谐且具备多色特性的聚合物拉曼标签;叁键拉曼标签为墨水着色剂与可光交联的水性树脂材料共混,制备出了可光固化3D打印的“拉曼墨水”,进一步利用3D打印技术实现了“拉曼墨水”在多种包装基材上多维度且特异性的图形、文字等信息打印,进而叁键聚合物标签可在打印的限域空间内进行可控排布,从而获得了一系列的多维结构码,即超级拉曼码。利用超快拉曼成像技术可对超级拉曼码(图文信息)进行解码,图文中光谱信息的差异性编码将对多类型、多样化商品的防伪及溯源有指导意义。 展开更多
关键词 3D打印 叁键 拉曼码 信息加密 防伪
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低热零点漂移的高温绝压压力传感器 被引量:2
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作者 王天靖 梁庭 +2 位作者 雷程 王丙寅 陈国锋 《仪表技术与传感器》 CSCD 北大核心 2023年第2期8-11,33,共5页
传统的高温绝压压力传感器一般采用硅和玻璃进行阳极键合来制备绝压腔。由于高温环境下硅片和硼硅玻璃的热膨胀系数不匹配,从而产生较高的热零点漂移。文中提出了一种低热零点漂移的压力传感器设计方案,由硅-玻璃-硅的三层结构代替普通... 传统的高温绝压压力传感器一般采用硅和玻璃进行阳极键合来制备绝压腔。由于高温环境下硅片和硼硅玻璃的热膨胀系数不匹配,从而产生较高的热零点漂移。文中提出了一种低热零点漂移的压力传感器设计方案,由硅-玻璃-硅的三层结构代替普通的双层阳极键合结构,并给出了热力学仿真模型。分析表明:改变传感器硅与玻璃的结构比例,实现应力匹配可以有效减小热应力。对芯片进行了高温实验测试,发现传感器的热零点漂移变化率减小了50%。 展开更多
关键词 绝压传感器 热应力 热膨胀系数 仿真 三层键合 热零点漂移
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拉曼光谱编码技术及其应用研究进展 被引量:3
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作者 汤婧怡 朱伟 沈爱国 《光散射学报》 2023年第4期326-338,共13页
光谱编码指的是将有限的光谱信号输出进行组合,从而得到更多光谱信号输出的手段,满足了高通量的生物检测和成像及高容量信息存储等需求。通常用于光谱编码的信号输出包括荧光光谱、拉曼光谱和反射光谱等。其中,拉曼光谱由于带宽窄、不... 光谱编码指的是将有限的光谱信号输出进行组合,从而得到更多光谱信号输出的手段,满足了高通量的生物检测和成像及高容量信息存储等需求。通常用于光谱编码的信号输出包括荧光光谱、拉曼光谱和反射光谱等。其中,拉曼光谱由于带宽窄、不易重叠,尤其是生物静默区的三键拉曼谱带尖锐、特异,无背景干扰,在光谱编码领域潜力巨大。本文综述了拉曼光谱编码技术的类型和编码方法,同时还介绍了拉曼光谱编码在生物医学检测、成像及信息安全等领域的应用。 展开更多
关键词 拉曼光谱 编码 三键 检测和成像 信息安全
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Synthesis and Properties of Reversible Disulfide Bond-based Self-healing Polyurethane with Triple Shape Memory Properties 被引量:3
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作者 Han Jia Kun Chang Shu-Ying Gu 《Chinese Journal of Polymer Science》 SCIE CAS CSCD 2019年第11期1119-1129,共11页
A reversible disulfide bond-based self-healing polyurethane with triple shape memory properties was prepared by chain extending of random copolymer poly(lactide-co-caprolactone)(PCLA), hexamethylene diisocyanate (HDI)... A reversible disulfide bond-based self-healing polyurethane with triple shape memory properties was prepared by chain extending of random copolymer poly(lactide-co-caprolactone)(PCLA), hexamethylene diisocyanate (HDI), polytetrahydrofuran (PTMEG), and 4,4,-aminophenyl disulfide. The chemical structures were characterized using 1H nuclear magnetic resonance (^1H-NMR) spectroscopy, Fourier transform infrared spectroscopy (FTIR), and gel permeation chromatography (GPC). The thermal properties, selfhealing properties, triple-shape memory effect, and quantitative shape memory response were evaluated by differential scanning calorimetry (DSC), tensile tests, two-step programming process thermal mechanical experiments, and subsequent progressive thermal recovery. The self-healing mechanism and procedures were investigated using polarizing optical microscopy (POM) and an optical profiler. It was concluded that self-healing properties (up to 60%) and triple-shape memory properties around 35 and 50℃(with shape fixation ratios of 94.3% and 98.3%, shape recovery ratios of 76.6% and 85.1%, respectively) were integrated to the shape memory polyurethane. As-prepared polyurethane is expected to have potential applications in multi-shape coatings, films, and step-by-step deploying structures. 展开更多
关键词 SELF-HEALING REVERSIBLE DISULFIDE bond triple shape memory POLYURETHANE
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Cobalt-catalyzed reductive alkynylation to construct C(sp)-C(sp^(3))and C(sp)-C(sp^(2))bonds 被引量:1
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作者 Lei Wan Yizhou Tong +1 位作者 Xi Lu Yao Fu 《Chinese Chemical Letters》 SCIE CAS CSCD 2024年第7期253-258,共6页
Transition-metal-catalyzed cross-electrophile coupling has emerged as a reliable method for constructing carbon–carbon bonds.Herein,we report a general method,cobalt-catalyzed reductive alkynylation,to construct C(sp... Transition-metal-catalyzed cross-electrophile coupling has emerged as a reliable method for constructing carbon–carbon bonds.Herein,we report a general method,cobalt-catalyzed reductive alkynylation,to construct C(sp)-C(sp^(3))and C(sp)-C(sp^(2))bonds.This presented reaction has a broad substrate scope,enabling the efficient cross-electrophile coupling between alkynyl bromides with alkyl halides and aryl or alkenyl(pseudo)halides.This presented reaction is conducted under mild conditions,tolerating many functional groups,thus suitable for the modification and synthesis of biologically active molecules. 展开更多
关键词 Cobalt-catalysis Cross-electrophile coupling carbon-carbon bond formation Reductive alkynylation Alkyne synthesis
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NHC-Boryl Radical Catalysis for Cycloisomerization With C–C Triple Bond Reorganization 被引量:2
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作者 Ai-Qing Xu Feng-Lian Zhang +2 位作者 Tian Ye Zhi-Xiang Yu Yi-Feng Wang 《CCS Chemistry》 CAS 2019年第5期504-512,共9页
Our present study unveils a new and efficient N-heterocyclic carbene(NHC)-boryl radical-catalyzed cycloisomerization of N-(2-ethynylaryl)arylamides.This catalytic process is triggered by the addition of an NHC-boryl r... Our present study unveils a new and efficient N-heterocyclic carbene(NHC)-boryl radical-catalyzed cycloisomerization of N-(2-ethynylaryl)arylamides.This catalytic process is triggered by the addition of an NHC-boryl radical to the alkynyl moiety,followed by a radical cascade comprising of an intramolecular cyclization,successive 1,5-and 1,2-aryl migrations,and the reorganization of a C–C triple bond. 展开更多
关键词 radical catalysis NHC-boryl radical CYCLOISOMERIZATION C-C triple bond reorganization aryl migration DFT calculation
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DOPING MECHANISM OF CONJUGATED POLYMER WITH CONJUGATED TRIPLE BOND
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作者 彭景翠 《Science China Mathematics》 SCIE 1991年第1期61-67,共7页
Based on experimental data, the doping and conductive characters of conjugated polymershaving conjugated triple bond have been analyzed in detail, the doping mechanism for poly-diacetylenes (PDA’s) has been explored ... Based on experimental data, the doping and conductive characters of conjugated polymershaving conjugated triple bond have been analyzed in detail, the doping mechanism for poly-diacetylenes (PDA’s) has been explored preliminarily. A doping model is presented in thelight of structural phase transition. The energy required for causing structural phasetransition of chain segment is estimated. The reason why polydiacetylene crystal dopingfailed is explained. 展开更多
关键词 CONJUGATED polymer CONJUGATED triple bond DOPING CONDUCTIVITY BIPOLARON structural phase transition.
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Synthesis, Reaction and Structures of Functionally Substituted η~5-Cyclopentadienyl Compounds With Cr≡S Triple Bond [η~5-RC_5H_4Cr(CO)_2]_2S (R=CH_3C(O),CH_3O_2C,C-2H_5O_2C,CH_3CH(OH),CO_2H)
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作者 宋礼成 申金玉 胡青眉 《Science China Chemistry》 SCIE EI CAS 1993年第11期1281-1288,共8页
[η_5-OH_3C(O)C_5H_4Cr(CO)_2]_2S 1, [η~5-CH_3O_2CC_5H_4Cr(CO)_2]_2S 2 and [η~5-C_2H_5O_2CC_5H_4Cr(CO)_2]_2S 3 were prepared by the reactions of corresponding sodium salts of functional η~5-cyclopentadienyl-tricarbo... [η_5-OH_3C(O)C_5H_4Cr(CO)_2]_2S 1, [η~5-CH_3O_2CC_5H_4Cr(CO)_2]_2S 2 and [η~5-C_2H_5O_2CC_5H_4Cr(CO)_2]_2S 3 were prepared by the reactions of corresponding sodium salts of functional η~5-cyclopentadienyl-tricarbonylchromium anions with SOCl_2. Reduction of 1 with NaBH_4 prdouced [η~5-CH_3CH(OH)C_5H_4Cr(CO)_2]_2S 4, while saponification of 2 followed by acidification and recrystallization from acetone afforded [η~5-HO_2CC_5H_4Cr(CO)_2]_2S·nCH_3C·(O)CH_3 5. 1—5 are a new class of Cr≡S triple bond compounds containing functional organic group on the cyclopentadienyl ring. A single-crystal X-ray diffraction analysis of 1 revealed that it consists of two identical organometallic fragments η~5-CH_3C(O)C_5H_4Cr(CO)_2 joined together by a sulfur atom via triple bonds. The geometry of structural unit Cr≡S≡Cr belongs to linearity and the average triple bond length of Cr≡S is 2.072(?). 展开更多
关键词 Cr≡S triple bond carbonyl SUBSTITUTED CYCLOPENTADIENYL SINGLECRYSTAL structure.
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SnCNN:一个包含SnC三重键的分子 被引量:1
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作者 张文斌 石国升 +1 位作者 丁益宏 孙家锺 《高等学校化学学报》 SCIE EI CAS CSCD 北大核心 2009年第7期1427-1430,共4页
在CCSD(T)//B3LYP方法下,研究了四原子分子[SnCN2]的势能面,发现线性异构体SnCNN具有良好的动力学稳定性.几何分析与键分析表明,该异构体包含Sn≡C三重键,并可以用过渡金属络合物配合稳定来增加其稳定性.
关键词 SnCNN 三重键 势能面 线性异构体
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资本账户开放政策对公司融资行为的影响——基于沪港通政策的实证研究 被引量:24
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作者 肖涵 刘芳 《经济经纬》 CSSCI 北大核心 2019年第3期58-65,共8页
以沪港通开放政策为例,利用上证A股1089家上市公司2013—2016年季度数据,分别采用双重差分法和三重差分法实证研究其对上市公司和小公司融资行为的影响。结果显示:(1)沪港通政策提高了上市公司股权融资和债权融资的积极性,显著地增加了... 以沪港通开放政策为例,利用上证A股1089家上市公司2013—2016年季度数据,分别采用双重差分法和三重差分法实证研究其对上市公司和小公司融资行为的影响。结果显示:(1)沪港通政策提高了上市公司股权融资和债权融资的积极性,显著地增加了股权融资和债权融资的规模。(2)相较于大公司,沪港通政策虽不能短期内提高小公司融资规模,但提高了小公司债权融资积极性。(3)双重差分和三重差分法所需的平行趋势假设均满足。沪港通开放政策与利率市场化、打破刚性兑付等资本市场化改革政策协调一致,将能改善中小企业的长期融资行为,促进中小高技术企业的培育与发展。 展开更多
关键词 资本市场开放 沪港通政策 股权融资和债权融资 双重差分法 三重差分法
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三重氢键自组装体系的设计与应用 被引量:1
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作者 裴强 丁爱祥 +2 位作者 王家文 徐文豪 徐果 《信阳师范学院学报(自然科学版)》 CAS 北大核心 2020年第3期503-516,共14页
三重氢键超分子自组装体系具有较强的结合力、合成简单、结构易于修饰以及可预测的识别性能等优点,广泛应用于分子识别、催化、软物质材料、功能材料等领域.利用65篇文献综述了近年来三重氢键自组装体系的研究进展及其应用,重点介绍了... 三重氢键超分子自组装体系具有较强的结合力、合成简单、结构易于修饰以及可预测的识别性能等优点,广泛应用于分子识别、催化、软物质材料、功能材料等领域.利用65篇文献综述了近年来三重氢键自组装体系的研究进展及其应用,重点介绍了各类三重氢键体系的设计思路及其稳定性影响因素.在此基础上,展望了未来三重氢键自组装体系的研究方向,主要包括设计合成能够在生理条件下稳定的三重氢键结合单元以及深化组装机理的研究. 展开更多
关键词 三重氢键 结构设计 超分子化学 自组装
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含共轭三键的聚合物的掺杂机理和导电特性的研究
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作者 彭景翠 黄述熙 +2 位作者 翦知渐 黄生祥 瞿述 《湖南大学学报(自然科学版)》 EI CAS CSCD 2000年第3期9-13,33,共6页
以聚丁 (对甲苯硫酸 ) - 2 ,4-已炔 - 1 ,6-二醇酯 [poly( bis( p-toluene sulphonate) ester of2 ,4- hexadiyne- 1 ,6- diol) ]( PDA- TS)为例 ,探讨了含共轭三键的聚合物的掺杂和导电特性的研究 ,对其微观掺杂机制 ,在比较现有的掺... 以聚丁 (对甲苯硫酸 ) - 2 ,4-已炔 - 1 ,6-二醇酯 [poly( bis( p-toluene sulphonate) ester of2 ,4- hexadiyne- 1 ,6- diol) ]( PDA- TS)为例 ,探讨了含共轭三键的聚合物的掺杂和导电特性的研究 ,对其微观掺杂机制 ,在比较现有的掺杂模型的基础上 。 展开更多
关键词 含共轭三键聚合物 掺杂 电导特性 PDA-TS
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