Efficient Aggregation‐Induced Emission Manipulated by Polymer Host Materials

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 diff...

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Bibliographic Details
Published in:Advanced materials (Weinheim) 2019-09, Vol.31 (37), p.e1903962-n/a
Main Authors: Wang, Xing‐Huo, Song, Nan, Hou, Wei, Wang, Chun‐Yu, Wang, Yan, Tang, Jun, Yang, Ying‐Wei
Format: Article
Language:English
Subjects:
Agglomeration
aggregation‐induced emission
Copolymers
Emission
Fluorescence
Functional groups
light‐harvesting systems
Materials science
Nanoparticles
pillar[n]arene
polymer hosts
supramolecular polymer materials
Supramolecular polymers
Tetrahydrofuran
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Summary: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/H2O. 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. Supramolecular polymer networks and supramolecular nanoparticles based on copolymer hosts bearing a number of pillar[5]arene dangling side chains and tetraphenyethylene‐based tetratopic guests are fabricated, incorporating high fluorescence quantum yield, tunable emission wavelength, and stable microstructures. This facile strategy suggests a new self‐assembly approach to construct high‐performance light‐harvesting materials.
ISSN:0935-9648
1521-4095
DOI:10.1002/adma.201903962