Kinetic studies on the formation of two intramolecular excimers in substituted dinaphthylpropanes
Kinetic studies on the formation of two intramolecular excimers in substituted dinaphthylpropanes
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取代二萘基丙烷中两种分子内准分子形成的动力学研究
DOI：
10.1021/ja00380a024
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发表时间：
1982
影响因子：
15
通讯作者：
I. Mita
中科院分区：
文献类型：
--
作者：
H. Itagaki;Noriko Obukata;A. Okamoto;K. Horie;I. Mita
研究了1，3-双（4-甲氧基-1-萘基）丙烷（BMNP）和1，3-双（4-羟基-1-萘基）丙烷（BHNP）在流体溶液中的发光特性。他们表现出，除了单体荧光，两个无结构的排放来自两种不同类型的准分子：一个正常的准分子和第二准分子，后者具有部分重叠的芳环结构。对BMNP荧光的瞬态衰减曲线的动力学分析表明，第二激基缔合物不是由正常激基缔合物形成或转化的，而是由激发态单体独立形成的。测定了反应的活化能和速率常数。第二次激基缔合物形成的活化能比正常激基缔合物形成的活化能小。
The emission properties of 1, 3-bis (4-methoxy-1-naphthyl) propane (BMNP) and 1, 3-bis (4-hydroxy-1-naphthyl) propane (BHNP) have been investigated in fluid solution. They exhibit, in addition to the monomer fluorescence, two structureless emissions derived from two different types of excimer: a normal excimer and a second excimer, the latter having a partially overlapping structure of aromatic rings. The kinetic analysis of transient decay curves for thefluorescence of BMNP showed that the second excimer is not formedfrom or converted to the normal excimer and that the two are formed independently from the excited monomer. Some activation energies and rate constants were determined. The activation energy for the second excimer formation was found to besmaller than that of the normal excimer formation.