首页> 外文期刊>The journal of physical chemistry, A. Molecules, spectroscopy, kinetics, environment, & general theory >Photoinduced electron transfer in coaggregates of dicyanonaphthalene and pyrazoline
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Photoinduced electron transfer in coaggregates of dicyanonaphthalene and pyrazoline

机译:双氰基萘和吡唑啉共聚集体中的光诱导电子转移

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The photophysical properties of mixed coaggregates containing 1,4-dicyanonaphthalene (DCN) and 1,3,5-triphenyl-2-pyrazoline (TPP) have been studied. The absorption spectra of mixed coaggregates indicate that a charge-transfer complex is not formed in the ground state between DCN and TPP. The fluorescence of TPP in the mixed coaggregates is quenched by DCN, accompanied with a broad and structureless emission at about 560 nm from an exciplex between DCN and TPP. The color of the emission from mixed coaggregates is tunable by changing the DCN content. The excited-state properties of the TPP-DCN molecule pair are investigated theoretically with a quantum chemistry method. The theoretical results have also confirmed that the broad emission at about 560 nm in the mixed coaggregates originates from the exciplex rather than from the charge-transfer complex.
机译:研究了包含1,4-二氰基萘(DCN)和1,3,5-三苯基-2-吡唑啉(TPP)的混合聚集体的光物理性质。混合聚集体的吸收光谱表明,在DCN和TPP之间的基态下未形成电荷转移络合物。 DCN淬灭了混合的聚集体中TPP的荧光,并伴随着DCN和TPP之间的激基复合物在约560 nm处发出了宽广且无结构的发射。可通过更改DCN含量来调整混合共聚体发射的颜色。理论上用量子化学方法研究了TPP-DCN分子对的激发态性质。理论结果还证实,混合共聚集体中约560 nm处的宽发射源于激基复合物,而不是电荷转移复合物。

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