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Smart On‐Off Switching Luminescence Materials with Reversible Piezochromism and Basichromism
Author(s) -
Yang Wei,
Liu Chunlin,
Lu Shuang,
Du Jinya,
Gao Qingyun,
Zhang Ronghua,
Liu Yi,
Yang Changying
Publication year - 2017
Publication title -
chemistryselect
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.437
H-Index - 34
ISSN - 2365-6549
DOI - 10.1002/slct.201701997
Subject(s) - luminescence , chemistry , iodide , sulfonate , fluorescence , protonation , differential scanning calorimetry , deprotonation , powder diffraction , photochemistry , crystallography , materials science , inorganic chemistry , organic chemistry , optoelectronics , ion , physics , quantum mechanics , thermodynamics , sodium
Three novel smart fluorescent on‐off materials based on hemicyanine, 3‐(2‐((1E,3E)‐4‐(3‐(4‐Fluorophenyl)‐1‐isopropyl‐1H‐indol‐2‐yl)buta‐1,3‐dien‐1‐yl)naphtho[1, 2‐d]thiazol‐1‐ium‐1‐yl)propane‐1‐sulfonate ( NTPS‐FPI ), (E)‐3‐(2‐(2‐(2‐hy‐droxynaphthalen‐1‐yl)vinyl)naphtho[1, 2‐d]thiazol‐1‐ium‐1‐yl)propane‐1‐sulfonate ( NTPS‐HN ) and (E)‐2‐(2‐(2‐hydroxynaphthalen‐1‐yl)vinyl)‐1,1,3‐trimethyl‐1H‐benz‐o[e]indol‐3‐ium iodide ( BI‐HN ), have been developed. They exhibit red or near‐infrared (NIR) emission and tunable on‐off solid‐state luminescent switch by multi‐stimuli, including physical or chemical mode. Single crystal, powder X‐ray diffraction, differential scanning calorimetry and scanning electron microscopy studies provide deep insight on polymorphism‐dependent piezochromism mechanism. Intriguingly, NTPS‐HN and BI‐HN show reversible solid‐state fluorescent on‐off characteristics by exposing in acid‐base vapor, which are ascribed to chemical deprotonation/protonation of terminal hydroxyl group. On the basis of multi‐stimuli response, the dual molecular level basic logic gates are established by using the appropriate external stimulus channel as the inputs and fluorescent colors as the readout data.