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Flexible π‐Conjugated 2,5‐Diarylamino‐Terephthalates: A New Class of Mechanochromic Luminophores with Tunable Aggregation States
Author(s) -
Liu Zhipeng,
Liu Yi,
Qi Fen,
Yan Hui,
Jiang Zhiyong,
Chen Yuncong
Publication year - 2020
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.202002712
Subject(s) - stacking , metastability , intermolecular force , conjugated system , hydrogen bond , luminescence , materials science , photochemistry , solid state , chemical physics , optoelectronics , chemistry , polymer , molecule , organic chemistry , composite material
The generation of different thermodynamically ( meta )stable states is crucial for the development of smart solid‐state luminescent materials. However, the design of luminophores with tunable aggregation states is remaining a grand challenge. Herein, we present a family of mechanochromic luminophores with tunable metastable states, based on the dynamically controllable π–π stacking of the flexible π‐conjugated structure of 2,5‐diarylamino‐terephthalates in the solid state. The experimental data revealed that both the kinetically controlled metastable state and thermodynamic controlled stable state can be generated via tuning the intermolecular interactions such as π–π stacking and hydrogen bonds. As a result, the highly sensitive mechano‐stimuli response of these luminophores was successfully achieved.