| 疏水作用对光化学和光物理过程的影响 V: 1,3-二萘基丙烷在不良溶剂中的分子构象和激基缔合物的形成 |
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| 引用本文： | 徐承柏,佟振合.疏水作用对光化学和光物理过程的影响 V: 1,3-二萘基丙烷在不良溶剂中的分子构象和激基缔合物的形成[J].化学学报,1988,46(7):686-692. |
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| 作者姓名： | 徐承柏 佟振合 |
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| 作者单位： | 中国科学院感光化学研究所 |
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| 摘 要： | 本文研究了1,3-二(α-萘基)丙烷(ααDNP)和1,3-二(β-萘基)丙烷(ββDNP)在乙二醇-水(EG-H2O)混合溶剂中的吸收光谱、荧光光谱以及时间分辨荧光光谱, 发现在-196至60℃范围内, 疏水效应使ααDNP和ββDNP分子采取两个萘环彼此靠近相互平行的构象, 并且两个萘环间有很强的相互作用, 形成基态配合物(二聚体), 受激后只显示二聚体荧光. 高于60℃, 二聚体分解, 受激后显示单体和激基缔合物荧光.
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| 关 键 词： | 吸收光谱法 二聚体 光化学 萘P 激发态 丙烷P 荧光分光光度法 构象 疏水性 荧光衰减 |
Hydrophobic effects on photophysical and photochemical processes V: The conformation and excimer formation of 1,3-dinaphthylpropanes in poor solvents |
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| XU CHENGBAI,DONG ZHENHE.Hydrophobic effects on photophysical and photochemical processes V: The conformation and excimer formation of 1,3-dinaphthylpropanes in poor solvents[J].Acta Chimica Sinica,1988,46(7):686-692. |
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| Authors: | XU CHENGBAI DONG ZHENHE |
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| Abstract: | The emission properties and absorption spectra of 1,3-di(a-naphthyl)propane and 1,3-di(b-naphthyl)propane in ethylene glycol-water mixtures were investigated. In the temperature region of -196 to 60? they exhibit new absorption and fluorescence spectra, which are attributable to the dimer formed between the 2 intramol. naphthyl groups. Above 60? the dimers decompose, only monomer and excimer fluorescenece can be observed |
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| Keywords: | ABSORPTION SPECTROMETRY DIMER PHOTOCHEMISTRY NAPHTHALENE P EXCITED STATE PROPANE P FLUOROSPECTROPHOTOMETRY CONFORMATION HYDROPHOBILITY FLUORSCENCE DECAY |
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