title: Precise Design of Phosphorescent Molecular Butterflies with Tunable Photoinduced Structural Change and Dual Emission.
abstract: Photoinduced structural change (PSC) is a fundamental excited-state dynamic process in chemical and biological systems. However, precise control of PSC processes is very challenging, owing to the lack of guidelines for designing excited-state potential energy surfaces (PESs). A series of rationally designed butterfly-like phosphorescent binuclear platinum complexes that undergo controlled PSC by Pt-Pt distance shortening and exhibit tunable dual (greenish-blue and red) emission are herein reported. Based on the Bell-Evans-Polanyi principle, it is demonstrated how the energy barrier of the PSC, which can be described as a chemical-reaction-like process between the two energy minima on the first triplet excited-state PES, can be controlled by synthetic means. These results reveal a simple method to engineer the dual emission of molecular systems by manipulating PES to control PSC.
authors.affiliation: Chemical and Biomedical Engineering, FAMU-FSU College of Engineering (USA).
authors.forename: Chenkun
authors.initials: C
authors.lastname: Zhou
authors.affiliation: Materials Science Program, Florida State University (USA).
authors.forename: Yu
authors.initials: Y
authors.lastname: Tian
authors.affiliation: Chemical and Biomedical Engineering, FAMU-FSU College of Engineering (USA).|Department of Chemistry and Biochemistry, Florida State University (USA).
authors.forename: Zhao
authors.initials: Z
authors.lastname: Yuan
authors.affiliation: Chemical and Biomedical Engineering, FAMU-FSU College of Engineering (USA).
authors.forename: Mingu
authors.initials: M
authors.lastname: Han
authors.affiliation: Department of Chemistry and Biochemistry, Florida State University (USA).
authors.forename: Jamie
authors.initials: J
authors.lastname: Wang
authors.affiliation: Department of Chemistry and Biochemistry, Florida State University (USA).
authors.forename: Lei
authors.initials: L
authors.lastname: Zhu
authors.affiliation: Department of Scientific Computing, Florida State University (USA).
authors.forename: Maliheh Shaban
authors.initials: MS
authors.lastname: Tameh
authors.affiliation: Materials Science Program, Florida State University (USA). chuang3@fsu.edu.|Department of Scientific Computing, Florida State University (USA). chuang3@fsu.edu.
authors.forename: Chen
authors.initials: C
authors.lastname: Huang
authors.affiliation: Chemical and Biomedical Engineering, FAMU-FSU College of Engineering (USA). bma@fsu.edu.|Materials Science Program, Florida State University (USA). bma@fsu.edu.|Department of Chemistry and Biochemistry, Florida State University (USA). bma@fsu.edu.
authors.forename: Biwu
authors.initials: B
authors.lastname: Ma
keywords: dual emission; excited states; molecular dynamics; photochemistry; platinum complexes