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Pillararene‐Based Fluorescent Supramolecular Systems: The Key Role of Chain Length in Gelation
Author(s) -
Song Nan,
Lou XinYue,
Hou Wei,
Wang ChunYu,
Wang Yan,
Yang YingWei
Publication year - 2018
Publication title -
macromolecular rapid communications
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.348
H-Index - 154
eISSN - 1521-3927
pISSN - 1022-1336
DOI - 10.1002/marc.201800593
Subject(s) - supramolecular chemistry , fluorescence , chloroform , supramolecular assembly , aggregation induced emission , solvent , chain (unit) , materials science , chemistry , crystallography , nanotechnology , polymer chemistry , organic chemistry , crystal structure , optics , physics , astronomy
Four supramolecular assemblies are fabricated from two pillararene tetramers with aggregation‐induced emission properties ( SH and LH ) and two different lengths of neutral guests with three binding sites (arms) for pillararene cavities ( SG and LG ) through host–guest interactions, and their fluorescent behaviors in organic solvent are investigated. SG⊂SH exhibits the largest fluorescent enhancement in chloroform due to supramolecular assembly‐induced emission enhancement, while only LG⊂LH turns into supramolecular gel with stimuli responsiveness owing to their most flexible arms.