高效聚集诱导发光聚合物基质材料的调控。
Efficient Aggregation-Induced Emission Manipulated by Polymer Host Materials.
机构信息
State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, International Joint Research Laboratory of Nano-Micro Architecture Chemistry (NMAC), College of Chemistry, Jilin University, 2699 Qianjin Street, Changchun, 130012, P. R. China.
State Key Laboratory of Supramolecular Structure and Materials, Institute of Theoretical Chemistry, Jilin University, 2699 Qianjin Street, Changchun, 130012, P. R. China.
出版信息
Adv Mater. 2019 Sep;31(37):e1903962. doi: 10.1002/adma.201903962. Epub 2019 Aug 4.
Linear copolymer hosts bearing a number of pillar[5]arene dangling side chains are synthesized for the facile construction of highly emissive supramolecular polymer networks (SPNs) upon noncovalently cross-linking with a series of tetraphenyethylene (TPE)-based tetratopic guests terminated with different functional groups through supramolecular host-guest interactions. An extremely high fluorescence quantum yield (98.22%) of the SPNs materials is obtained in tetrahydrofuran (THF) by fine-tuning the parameters, and meanwhile supramolecular light-harvesting systems based on spherical supramolecular nanoparticles are constructed by interweaving 9,10-distyrylanthracene (DSA) and TPE-based guest molecules of aggregation-induced emission (AIE) with the copolymer hosts in the mixed solvent of THF/H O. The present study not only illustrates the restriction of the intramolecular rotations (RIR)-ruled emission enhancement mechanism regulated particularly by macrocyclic arene-containing copolymer hosts, but also suggests a new self-assembly approach to construct high-performance light-harvesting materials.
线性共聚主体带有许多柱芳烃悬垂侧链，通过超分子主客体相互作用，与一系列带有不同官能团的四苯乙烯（TPE）基四齿客体非共价交联，很容易构建出高发光超分子聚合物网络（SPN）。通过精细调节参数，在四氢呋喃（THF）中得到 SPN 材料的极高荧光量子产率（98.22%），同时通过共聚物主体在 THF/H2O 的混合溶剂中交织 9,10-二苯乙烯基蒽（DSA）和基于 TPE 的聚集诱导发射（AIE）客体分子，构建了基于球形超分子纳米粒子的超分子光收集系统。本研究不仅说明了受大环芳烃共聚主体特别调控的分子内旋转（RIR）规则的发射增强机制，还提出了一种构建高性能光收集材料的新自组装方法。
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