Journal
TETRAHEDRON
Volume 64, Issue 36, Pages 8515-8521Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.tet.2008.05.048
Keywords
molecular logic gate; Hg sensor; pH switch
Categories
Funding
- NSFC/China [50673025,, 90401026]
- National Basic Research 973 Program [2006CB806200]
- Scientific Committee of Shanghai
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A novel fluorophore 1,3-bis(1,1,3-trimethyl-1H-benzo[e]indol-2(3H)-ylidene)propan-2-one (L) was synthesized and fully characterized by H-1 NMR, C-13 NMR, HRMS, and X-ray single-crystal structural analysis. Compound L is a pH-controlled Molecular switch due to its protonation. The fluorescence change in protic polar solvents means that this compound also could be used as a protic solvent polarity sensor. Among the considered metal ions, the fluorescence of compound L Could be quenched completed by Hg2+ ions with a high selectivity. Based on these fluorescence Characters, this fluorescent dye L has promising applications as a multiple-mode molecular logic system. (C) 2008 Elsevier Ltd. All rights reserved.
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