@Article{CiCC-5-27, author = {}, title = {Straightforward Stepwise Excited State Dual Proton Transfer Mechanism for 9-10-HBQ System}, journal = {Communications in Computational Chemistry}, year = {2017}, volume = {5}, number = {2}, pages = {27--36}, abstract = {

A new molecule 9,10-dihydroxybenzo[h] quinoline (i.e. 9-10-HBQ) is focused in the present work about its excited state proton transfer (ESPT) mechanism. Though comparing potential energy barriers, it is found that the ultrafast ESPT process could occur in the $S_1$ state without potential energy barrier along with hydrogen bond $O_3$-$H_4···N_5$ forming 9-10-HBQ-PT1 structure, subsequently, the second proton transfers via another intramolecular hydrogen bonded wire $O_1$-$H_2···N_3$ with a low potential energy barrier (about 7.69 kcal/mol) in the $S_1$ state forming 9-10-HBQ-PT2 configuration. After completing excited state dynamical process, the $S_1$-state could turn back to $S_0$ state with occurring reversed ground state proton transfer forming initial 9-10-HBQ structure.

}, issn = {2617-8575}, doi = {https://doi.org/10.4208/cicc.2017.v5.n2.1}, url = {http://global-sci.org/intro/article_detail/cicc/9998.html} }