期刊
CHEMISTRY-AN ASIAN JOURNAL
卷 13, 期 9, 页码 1206-1212出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/asia.201800282
关键词
electro-base; electrochemistry; chromophores; molecular switches; oxazine
资金
- National Science Foundation of China [21602075, 21572079]
- program for JLU Science and Technology Innovative Research Team (JLUS-TIRT)
A multi-state and multi-stimuli-responsive oxazine molecular switch that combines an electro-base property and sensitive base/acid-responsive properties was designed and synthesized. The multi-state structures of the molecular switch, with different colors, were predicted by comparing the optical properties with reference molecules and confirmed by using NMR spectroscopy. The color-switching mechanism under stimulation with acids and bases was investigated by using DFT calculations. Three single states can be obtained and the switching is unidirectional under acid and base stimulation. The electrochromic phenomenon of the molecular switch, which combines its electro-base and base-sensitive properties, was demonstrated. An electrochromic device that exhibited good electrochromic properties with excellent reversibility (2000cycles) and high coloration efficiency (804cm(2)C(-1)) was successfully constructed.
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