Zoon Peter D, Brouwer Albert M
University of Amsterdam, van 't Hoff Institute for Molecular Sciences, Nieuwe Achtergracht 129, 1018 WS, Amsterdam, The Netherlands.
Photochem Photobiol Sci. 2009 Mar;8(3):345-53. doi: 10.1039/b818371f. Epub 2009 Feb 16.
The solvatochromic behavior of N-(2,5-di-tert-butylphenyl)-9-pyrrolidinoperylene-3,4-dicarboximide () was investigated by measuring the excitation and emission spectra over a wide range of temperature in 2-methyltetrahydrofuran (MTHF). The temperature induced spectral changes can be compared with the changes caused by changing solvent polarity using different solvents at room temperature. In both cases a strong positive solvatochromism is observed both in absorption/excitation and in emission. The difference between excitation and emission energies decreases with increasing solvent polarity. The behavior of can be rationalized in terms of a change in electronic structure with solvent polarity. Although has the typical molecular structure of a push-pull substituted aromatic system, in which the solvatochromic shift in emission is normally larger than that in absorption, in its solvent-induced electronic structure change it resembles a merocyanine.
通过在2-甲基四氢呋喃（MTHF）中在较宽温度范围内测量激发光谱和发射光谱，研究了N-(2,5-二叔丁基苯基)-9-吡咯烷基苝-3,4-二甲酰亚胺（）的溶剂化显色行为。温度引起的光谱变化可与在室温下使用不同溶剂改变溶剂极性所引起的变化进行比较。在这两种情况下，在吸收/激发和发射中均观察到强正溶剂化显色现象。激发能和发射能之间的差异随着溶剂极性的增加而减小。 的行为可以根据电子结构随溶剂极性的变化来合理解释。尽管 具有推挽取代芳族体系的典型分子结构，其中发射中的溶剂化显色位移通常大于吸收中的溶剂化显色位移，但在其溶剂诱导的电子结构变化中，它类似于部花青。
