Journal
DYES AND PIGMENTS
Volume 120, Issue -, Pages 184-189Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.dyepig.2015.04.015
Keywords
Helicene; Organic dye; Switching property; Fluorescent material; Theoretical calculation; Reversible response
Funding
- National Natural Science Foundation of China [21272264, 21332008]
- National Basic Research Program [2011CB932501]
- Strategic Priority Research Program of the Chinese Academy of Sciences [XDB12010400]
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A new organic imide dye based on tetrahydro[5]helicene skeleton was synthesized, and its helical structural feature was confirmed by the crystal structure. It was found that the dye exhibited remarkable and reversible acid/base stimulated fluorescence switching properties in both solution and solid state, in which the dye was changed from D-A type to A-A type in the presence of TFA, and returned to its original form upon the addition of TEA. This switchable behavior was also evidenced by the H-1 NMR experiments and theoretical calculations. (C) 2015 Elsevier Ltd. All rights reserved.
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