Synthesis, photophysical properties, and DNA-binding of novel A-π-D-π-A' two-photon absorption chromophores
| Autor: | Shengli Li, Fei-Fei Ma, Zhi-Bin Cai, Yupeng Tian |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
Chemistry
General Chemical Engineering General Physics and Astronomy 02 engineering and technology General Chemistry Chromophore 010402 general chemistry 021001 nanoscience & nanotechnology Photochemistry 01 natural sciences Fluorescence Two-photon absorption 0104 chemical sciences Excited state A-DNA Density functional theory Fourier transform infrared spectroscopy 0210 nano-technology Absorption (electromagnetic radiation) |
| Zdroj: | Journal of Photochemistry and Photobiology A: Chemistry. 364:705-714 |
| ISSN: | 1010-6030 |
| DOI: | 10.1016/j.jphotochem.2018.05.038 |
| Popis: | Three novel two-photon absorption chromophores (1BI, 2TAZ, and 3PyB), which have trans-1,4-divinylbenzene π-bridge, methoxy donors, and different acceptors, were synthesized. Their structures were elucidated by means of hydrogen-1 nuclear magnetic resonance, carbon-13 nuclear magnetic resonance, Fourier transform infrared spectroscopy, and high-resolution mass spectrometry. Their photophysical properties, including linear absorption, single-photon excited fluorescence, two-photon absorption, and two-photon excited fluorescence, were systematically investigated in various solvents. The structure-property relationships were studied aided with the density functional theory calculations. In addition, the absorption, single- and two-photon fluorescence spectra of 3PyB-ctDNA were examined to evaluate whether 3PyB could be used as a DNA stain. The possible interaction mechanism of 3PyB-ctDNA was also studied by the NaCl titration and the viscosity experiment. The results indicate that 3PyB may serve as a potential DNA fluorescent probe. |
| Databáze: | OpenAIRE |
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