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树枝状共轭聚合物研究 总被引:1,自引:0,他引:1
本文介绍了树枝状共轭聚合物的最新发展,包括全共轭、部分共轭树枝状聚合物及树枝化共轭聚合物的特点及其在电致发光、电极、传感器以及光探测等领域的功能化应用;详细讨论了包括代数、支化单元、端基、核、金属离子的络合等结构因素以及溶剂和浓度等工艺因素对电荷传输的影响;并进一步提出该领域研究前景及有待于解决的问题. 相似文献
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本文介绍了树枝状共轭聚合物的最新发展,包括全共轭、部分共轭树枝状聚合物及树枝化共轭聚合物的特点及其在电致发光、电极、传感器以及光探测等领域的功能化应用;详细讨论了包括代数、支化单元、端基、核、金属离子的络合等结构因素以及溶剂和浓度等工艺因素对电荷传输的影响;并进一步提出该领域研究前景及有待于解决的问题. 相似文献
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本文介绍了树枝状共轭聚合物的最新发展,包括全共轭、部分共轭树枝状聚合物及树枝化共轭聚合物的特点及其在电致发光、电极、传感器以及光探测等领域的功能化应用;详细讨论了包括代数、支化单元、端基、核、金属离子的络合等结构因素以及溶剂和浓度等工艺因素对电荷传输的影响;并进一步提出该领域研究前景及有待于解决的问题。 相似文献
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近年来,以共轭聚合物作为生物传感元件,在生物大分子(如核酸、蛋白质)特异性识别、检测方面的研究越来越受到人们的关注。共轭聚合物具有强的光捕获能力,具有倍增光学响应性,可用来放大荧光传感信号,大大提高检测的灵敏度,为生物传感器的发展提供了新的传感模式。基于共轭聚合物的新型生物传感器在医疗诊断、环境检测以及国家安全防御等方面具有广泛的应用前景。本文简要介绍了共轭聚合物的荧光信号放大机制以及在蛋白质、酶、抗原-抗体检测方面的应用。最后对共轭聚合物在蛋白质检测方面的未来发展趋势进行了展望。 相似文献
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共轭聚合物因其具有π-电子体系及共轭离域结构,一般都具有优异的发光性能,其发光强度和发射波长会随被检测化合物结构的不同而发生特异性响应,特别是在与被检测物相互作用过程中所产生电荷和能量能够沿共轭分子链进行有效传递,成倍放大这种作用,从而有效提高了检测灵敏度,这比相应的小分子化合物更具有优越性。目前共轭聚合物已被用于开发新型化学、生物传感器,尤其是在生物分子检测方面的应用得到迅速的发展。本文总结了近年来荧光共轭聚合物在生物传感方面的研究进展,主要讨论共轭聚合物在蛋白质、核酸及毒素检测中的应用。 相似文献
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基于共轭高分子材料的光学生物传感器* 总被引:2,自引:0,他引:2
以聚芴、聚噻吩、聚乙炔为典型代表的共轭导电高分子材料,是作为传感元件进行光、电信号传导的优异材料,目前已成为生物传感器领域研究的热点。基于不同类型,不同性质的共轭高分子所设计的传感策略特色各异,功能也不尽相同,例如,利用共轭高分子可以与某些电子/能量受体之间发生电子/能量转移的特点,可以使传感器的检测信号得到数百万倍的放大,从而极大地提高检测的灵敏度;利用共轭高分子的光学性质随构象变化而变化的特点,则可以实现对靶介导的生物分子的构象或结构转变的检测。本文对各种基于不同传感策略的共轭高分子光学生物传感器研究进行了综述,并对该领域的发展前景进行了展望。 相似文献
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Conjugated polymers display unique electronic and optical properties, which favor their use in applications as optoelectronic materials and molecular devices. Despite the recent remarkable progress in the chemistry of conjugated polymers, the synthesis of conjugated polymers containing cyclophane units in the main chain is limited to only a few examples. This Minireview presents recent developments in the synthesis, properties, and applications of through-space conjugated polymers based on cyclophanes. 相似文献
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Luping Yu 《高等学校化学学报》1998,19(Z1):3
It is well recognized that the current trend in organic chemistry is diverged into two frontiers: biochemistry and materials chemistry. This talk presents our recent research effort in the interfacial area between organic and materials chemistry. The major theme of our research is focused upon the rational design, synthesis and characterization of novel functional and multifunctional polymers and molecules. Typical examples of current projects are: 1). Development of polymerization methodologies: a). exploration of palladium catalyzed reactions for polycondensations, b). living ring-opening polymerization of cyclic lactone to form thioester-functionalized polyesters for chemo-ligation, 2). Design, synthesis and physical studies of photorefractive polymers, 3). Second order nonlinear optical polymers, 4). Conjugated diblock polymers for the formation of self-assembled, nano-sized electroactive materials, 5). High-performance light emitting diodes from new conjugated polymers, 6). Conjugated liquid crystalline polymers, 7). Architectural controls of polymer microstructures, including synthesis of dendritic polyphenylenevinylenes, 8). Metal-containing functional polymers. 9) Biocompatible polymers. 相似文献
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Conjugated polymers incorporating transition metals have enormous potential for chemically-tuneable conducting and semiconducting polymers. Unfortunately, progress in this field has been limited by the challenge of preparing suitable metal-containing monomers, the difficulty of polymerizing them in a controlled manner, and the limited solubility of the resulting polymers. We are developing new, soluble conjugated metal-containing polymers that contain transition metals in a conjugated organic backbone. 相似文献
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对聚苯胺、聚吡啶等共轭聚合物与非导电聚合物材料的复合体系的结构和性能进行了综述。不同方法制备的复合材料在结构和性能上各有特点。一般共轭聚合物与非导电高分子材料相容性差、尤其是低极性高分了。 相似文献
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Matthias Rehahn Prof. Dr. 《Chemie in Unserer Zeit》2003,37(1):18-30
Conventional polymers such as thermoplastics or duromers are insulators. Conjugated polymers like polyacetylene, polypyrrol or polyaniline are insulators as well when in the parent state. However, they can change into „highways for electrons”︁ after moderate oxidation or reduction. The article describes the synthesis of some polyenes and polyarylenes, the physical background of their insulating and electrically conducting state, respectively, as well as some potential applications of these so-called „synthetic metals”︁. 相似文献
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Conjugated, borole-linked polymers have been self-assembled based on boronate ester formation between a fluorene-2,7-diboronic acid and 1,2,4,5-tetrahydroxybenzene. Readily soluble polymers with molecular weights approaching 60 000 have been generated with materials exhibiting extended conjugation over approximately 3-5 borole linkages. Emission from these polymers reaches into the visible (blue) range, representing a novel class of blue-emitting materials. 相似文献
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Hao Chen Fang-Yuan Chu Hai-Yan Zhuang Lu Wang Zhi-Min Ye Wei Dong Zhi-Peng Xie A-Ming Xie 《高分子科学》2023,41(8):1305-1316
Conjugated microporous polymers have excellent skeleton structures but poor electrical conductivity limits their applications in microwave absorption. To solve this problem, a strategy of molecular expansion and confining polymerization is proposed in this work to synthesize conductive hyper-crosslinked conjugated microporous polymer. The topology of the conjugated microporous polymer is changed into a three-dimensional skeleton structure with high specific surface area by using molecular expans... 相似文献
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Yang Jing An Ning Sun Su Sun Xiangnan Nakano Masahiro Takimiya Kazuo Xiao Bo Zhou Erjun 《中国科学:化学(英文版)》2019,62(12):1649-1655
Conjugated polymers are widely used in organic optoelectronic devices due to their solution processability, thermal stability and structural diversity. Generally, alkyl side chains must be utilized to increase the solubility of final polymers in the processing solvent. However, the effects of different type alkyl chains on the properties of n-type photovoltaic polymers have rarely been investigated. In this article, we synthesized three naphthodithiophene diimide(NDTI) based polymers containing bulky alkyl chains with different branching position, named as NDTI-1, NDTI-2 and NDTI-3, respectively. We systematically investigated the effect of different branching point on the molecular packing, charge transport and photovoltaic performance. When moving the branching point away from the backbone, the intermolecular interaction became stronger, which could be proved by 2D grazing incidence wide angle X-ray scattering(GIWAXS) measurement. Therefore, the electron mobilities in organic field-effect transistors gradually increased from 2.11×10~(-3) cm~2 V/~(-1) s~(-1) for NDTI-1 to 4.70×10-2 cm~2 V/~(-1) s-1 for NDTI-2 and 9.27×10~(-2) cm~2 V/~(-1) s~(-1) for NDTI-3,which are quite high values for polymers with face-on orientation. In addition, the NDTI-2 and NDTI-3 thin films exhibited redshifted absorption spectra compared with NDTI-1. When blending with three classic donor polymers PBDB-T, PTB7-Th and PE61, NDTI-2 based devices always showed the higher power conversion efficiencies(PCEs) than the other two polymers(beside the comparable result of PTB7-Th:NDTI-3 combination) as a result of the high photocurrent response and high fill factor. Our results indicate that bulky alkyl chain with branching point at 2-position should be a good and safe choice for the design of naphthodithiophene diimide-based and even naphthalene diimide-based n-type photovoltaic polymers. 相似文献