A. Jana, P. Roy, Sanghita Mondal, Subrata Das, D. Nath
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引用次数: 3
摘要
研究了不同体介电常数(e)的苯-乙腈(Bz-ACN)混合物中芘- n, n -二甲苯胺(Py-DMA)配合物体系的磁场效应(MFE)。在激振复合物的发射波段上对MFE进行了波长分辨，并测量了寿命。这些数据建立了在较高的介电常数体积值下形成松弛和非松弛两种杂合体的概念。在介电常数较低时，当溶剂重组能不那么显著时，只形成单一类型的外络合物(松弛型)。数据还表明苯π云有利于松弛外络合物的形成。
Further Studies on Relaxed and Un-Relaxed Exciplexes in Pyrene-N,NDimethylaniline System in Benzene-Acetonitrile Binary Solvents
Magnetic field effect (MFE) on pyrene-N,N-dimethylaniline (Py-DMA) exciplex system in benzene-acetonitrile (Bz-ACN) mixtures of varying bulk permittivity (e) has been studied. The MFE has been wavelength resolved over the emission band of the exciplex along with the measurement of lifetime. The data establishes the concept of formation of two types of exciplexes (Relaxed and Un-relaxed) at higher bulk value of permittivity. At lower value of permittivity when solvent reorganization energy is not so prominent effectively only a single type of exciplex (Relaxed) is formed. The data also indicates that the benzene π cloud favors formation of relaxed exciplex.
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