期刊
DYES AND PIGMENTS
卷 99, 期 1, 页码 20-28出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.dyepig.2013.04.016
关键词
Pyrimidine derivatives; Single-photon excited fluorescence; Linear absorption; Two-photon absorption; Density functional theory; Cell image
资金
- National Natural Science Foundation of China [21271004, 21071001, 51142011, 21201005, 21101069]
- Natural Science Foundation of Anhui Province [1208085MB22]
- Ministry of Education of China
Two novel bent-shaped D-pi-A-pi-D chromophore molecules, 2-pyrazolyl-4,6-bis (4-N,N-ethylaminostyryl)pyrimidine (Z1) and 2-imidazolyl-4,6 bis- (4-N,N- ethylaminostyryl) pyrimidine (Z2), were synthesized and fully characterized. It was found that the both bent-shaped chromophore molecules crystallize in the orthorhombic system, space group of P2(1)2(1)2(1), The photophysical properties and the connections between structure and properties of the chromophores were investigated both experimentally and theoretically. It was revealed that both absorption and single-photon excited fluorescence (SPEF) spectra show remarkable bathochromic shifts with increasing polarity of the solvents. The two chromophores have strong two-photon excited fluorescence and large two-photon absorption cross-sections in the near-infrared range. Additionally, two-photon microscopy (TPM) fluorescent imaging of BEL-7402 cells labeled with the Z1 and Z2 revealed their potential application as a biological fluorescent probe. (C) 2013 Elsevier Ltd. All rights reserved.
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