Two modes of photoinduced twisted intramolecular charge transfer in meso-arylaminated subporphyrins
Two modes of photoinduced twisted intramolecular charge transfer in meso-arylaminated subporphyrins
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内消旋芳基胺化亚卟啉中光致扭曲分子内电荷转移的两种模式
DOI：
10.1039/c4cc02368d
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发表时间：
2014
期刊：
影响因子：
--
通讯作者：
D. Kim
中科院分区：
文献类型：
--
作者：
W.-Y. Cha;J. M. Lim;K. H. Park;M. Kitano;A. Osuka;D. Kim
通过稳态和时间分辨吸收/荧光实验和量子计算揭示了内消旋-(4-二甲氨基)苯基氨基亚卟啉 2 和内消旋-(4-硝基)苯基氨基亚卟啉 3 的光诱导扭曲分子内电荷转移 (TICT)。亚卟啉 2 和 3 分别在 Cmeso-N 键和 N-Cipso 键处发生分子扭曲，以触发分子内电荷分离，这种分离在低温或粘性石蜡油中受到限制，同时局部激发态的荧光恢复。
Photoinduced twisted intramolecular charge transfer (TICT) of meso-(4-dimethylamino)phenylamino subporphyrin 2 and meso-(4-nitro)phenylamino subporphyrin 3 has been revealed by steady-state and time-resolved absorption/fluorescence experiments and quantum calculations. Subporphyrins 2 and 3 undergo molecular twisting at the Cmeso–N bond and the N–Cipso bond, respectively, to trigger intramolecular charge separation, which is restricted at low temperature or in viscous paraffin oil with concurrent fluorescence recovery of local excited states.