期刊
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
卷 145, 期 -, 页码 25-32出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.saa.2015.02.109
关键词
BODIPY; Copper ions; Molecular logic gates; Colorimetric sensors; Fluorescent sensors; Spectroscopic properties
类别
资金
- National Natural Science Foundation of China [91127032, 21174035, 21274034]
- Excellent Young Teachers in Zhejiang Province and Hangzhou Normal University [HNUEYT 2011-01-019]
- Opening Foundation of Zhejiang Provincial Top Key Discipline [20121109]
- National Training Programs of Innovation and Entrepreneurship for Undergraduates [201310346014]
- Zhejiang Province's Xinmiao Talent Plan [2014R421064]
A novel near-infrared fluorescent chemosensor based on BODIPY (Py-1) has been synthesized and characterized. Py-1 displays high selectivity and sensitivity for sensing Cu2+ over other metal ions in acetonitrile. Upon addition of Cu2+ ions, the maximum absorption band of Py-1 in CH3CN displays a red shift from 603 to 608 nm, which results in a visual color change from pink to blue. When Py-1 is excited at 600 nm in the presence of Cu2+, the fluorescent emission intensity of Py-1 at 617 nm is quenched over 86%. Notably, the complex of Py-1-Cu2+ can be restored with the introduction of EDTA or S2-. Consequently, an IMPLICATION logic gate at molecular level operating in fluorescence mode with Cu2+ and S2- as chemical inputs can be constructed. Finally, based on the reversible and reproducible system, a nanoscale sequential memory unit displaying Writing-Reading-Erasing-Reading functions can be integrated. (C) 2015 Elsevier B.V. All rights reserved.
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