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Asymmetric Color‐Changeable Luminophore with Donor–Acceptor–Donor Structure for Solvent and Temperature Sensitive Properties
Author(s) -
Kitagawa Yuichi,
Yachi Ryuto,
Nakanishi Takayuki,
Fushimi Koji,
Hasegawa Yasuchika
Publication year - 2018
Publication title -
chemistryselect
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.437
H-Index - 34
ISSN - 2365-6549
DOI - 10.1002/slct.201801902
Subject(s) - luminophore , phosphorescence , luminescence , photochemistry , fluorescence , acceptor , absorption (acoustics) , chemistry , solvent , absorption spectroscopy , excited state , materials science , optoelectronics , organic chemistry , optics , atomic physics , physics , composite material , condensed matter physics
An asymmetric donor–acceptor–donor (D–A–D) type organic luminophore is reported for solvent and temperature sensors. The electronic absorption and luminescence properties of the luminophore were assessed from its electronic absorption and luminescence spectra, which depended on the external environment. The D–A–D luminophore showed environment‐sensitive charge transfer fluorescence based on structural transformation through excited singlet states. Characteristic D–A–D phosphorescence was also observed at 494 nm, which was shorter than that of the D–A–D fluorescence (502 nm). In this study, the novel photophysical properties of a D–A–D‐type luminophore induced by its asymmetric electronic structure are described.