Intermolecular Hydrogen Bonding Controlled Intersystem Crossing Rates of Benzophenone
Intermolecular Hydrogen Bonding Controlled Intersystem Crossing Rates of Benzophenone
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DOI：
10.1021/acs.jpclett.8b00345
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发表时间：
2018-04-05
影响因子：
5.7
通讯作者：
Umapathy, Siva
中科院分区：
文献类型：
--
作者：
Venkatraman, Ravi Kumar;Kayal, Surajit;Umapathy, Siva
溶剂化在各种物理化学和生物过程中起着至关重要的作用。在这里，二苯甲酮从S-1(npi*)态到其三重态的系间交叉速率被质子型溶剂分子的氢键作用所改变。我们通过将激发波长调节到二苯甲酮的带中心(波长=340 nm)或长波边(波长=380 nm)来选择性地光激发二苯甲酮，其羰基是配位的或非配位的。
Solvation plays a critical role in various physicochemical and biological processes. Here, the rate of intersystem crossing (ISC) of benzophenone from its S-1(n pi*) state to its triplet manifold of states is shown to be modified by hydrogen-bonding interactions with protic solvent molecules. We selectively photoexcite benzophenone with its carbonyl group either solvent coordinated or uncoordinated by tuning the excitation wavelength to the band center (lambda = 340 nm) or the long-wavelength edge (lambda = 380 nm) of its pi*