Journal
INORGANIC CHEMISTRY
Volume 56, Issue 8, Pages 4395-4399Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acs.inorgchem.6b03062
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Funding
- Sichuan University High Level Talent Project
- U.S. National Science Foundation [CHE-1565627]
- Sichuan Province 1,000 Talents Plan Project
- Direct For Mathematical & Physical Scien
- Division Of Chemistry [1565627] Funding Source: National Science Foundation
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Fluorescence responses of two BINOL-based diastereomeric salicylaldimines toward a variety of metal cations have been studied in methanol solution. It is revealed that both compounds show great fluorescence enhancements in the presence of Zn2+ but not with any other metal ions. Moreover, these two diastereomers exhibit dramatically different responses toward Zn2+ under the same conditions. That is, one can produce much stronger fluorescence enhancement also at a longer wavelength than the other. This fluorescence recognition of Zn2+ also shows distinctive color changes under a UV lamp. Mass and NMR spectroscopic analyses have been used to study the mechanism, which indicates the formation of 2+nZn(2+) complexes (n = 2, 3). This work has shed new light on the mechanism of an enantioselective fluorescent recognition of chiral amines promoted by Zn2+.
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