Microscopic Solvation of Acetonitrile to 9,9‘-Bianthryl Studied in Gas Phase Clusters: Polar Excited State Formation†
Microscopic Solvation of Acetonitrile to 9,9‘-Bianthryl Studied in Gas Phase Clusters: Polar Excited State Formation†
复制标题
在气相簇中研究乙腈微观溶剂化为 9,9-联蒽：极性激发态形成†
DOI：
10.1021/jp0118064
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发表时间：
2002
影响因子：
2.9
通讯作者：
K. Honma
中科院分区：
文献类型：
--
作者：
Katsuhiro Tanaka;K. Honma
研究了9，9‘-联苯并[BA]-(ACn)n(n=1−5)气相簇合物的电子激发态动力学。气相团簇是由BA/乙腈/He混合物的超声膨胀形成的。在激光诱导荧光光谱中，在BA的S1−S0跃迁的较长波长一侧观察到了属于BA-(Acn)n团簇的新的吸收带。测量了质量选择双色共振增强多光子电离(REMPI)光谱，确定了具有特定数目的乙腈分子的BA团簇的吸收带。测量了这些吸收带的色散荧光光谱和寿命，研究了BA-(ACN)n团簇中BA的激发态动力学.与未簇合的BA相比，BA的DF光谱较宽且红移较大.簇内BA的荧光寿命明显长于未簇化的BA。这些……
Dynamics of the electronically excited state of 9,9‘-bianthryl(BA) was studied in gas-phase clusters with acetonitrile (ACN), BA-(ACN)n (n = 1−5). The gas-phase clusters were formed by supersonic expansion of BA/acetonitrile/He mixtures. In the laser-induced fluorescence spectra, new absorption bands ascribed to the BA-(ACN)n clusters were observed at longer wavelength side of the S1−S0 transition of BA. The mass-selected two-color resonance-enhanced multiphoton ionization (REMPI) spectra were measured to determine the absorption band for the cluster of BA with the specific number of the acetonitrile molecules. The dispersed fluorescence (DF) spectra and lifetimes were measured for these absorption bands to study the dynamics of the excited state of BA in the clusters, BA-(ACN)n. For all clusters studied, the DF spectra of BA were broad and largely red shifted compared with that of unclustered BA. The fluorescence lifetimes of BA in the clusters were considerably longer than that of unclustered BA. These ...