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A Thermo‐ and Mechanoresponsive Cyano‐Substituted Oligo( p‐ phenylene vinylene) Derivative with Five Emissive States
Author(s) -
Sagara Yoshimitsu,
Lavrenova Anna,
Crochet Aurélien,
Simon Yoan C.,
Fromm Katharina M.,
Weder Christoph
Publication year - 2016
Publication title -
chemistry – a european journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.687
H-Index - 242
eISSN - 1521-3765
pISSN - 0947-6539
DOI - 10.1002/chem.201600272
Subject(s) - chromophore , luminescence , intermolecular force , excimer , photoluminescence , materials science , phenylene , derivative (finance) , solid state , photochemistry , solvent , molecule , polymer chemistry , optoelectronics , polymer , chemistry , organic chemistry , fluorescence , optics , physics , financial economics , economics , composite material
Multiresponsive materials that display predefined photoluminescence color changes upon exposure to different stimuli are attractive candidates for advanced sensing schemes. Herein, we report a cyano‐substituted oligo( p ‐phenylene vinylene) (cyano‐OPV) derivative that forms five different solvent‐free solid‐state molecular assemblies, luminescence properties of which change upon thermal and mechanical stimulation. Single‐crystal X‐ray structural analysis suggested that tolyl groups introduced at the termini of solubilizing side‐chains of the cyano‐OPV play a pivotal role in its solid‐state arrangement. Viewed more broadly, this report shows that the introduction of competing intermolecular interactions into excimer‐forming chromophores is a promising design strategy for multicolored thermo‐ and mechanoresponsive luminescent materials.