title: Intersystem Crossing Rates of Isolated Fullerenes: Theoretical Calculations.
abstract: Although the triplet states of fullerenes have prosperous applications, it remains unclear how the structural parameters of singlet and triplet states control the intersystem crossing (ISC) rates. Here, electronic structure calculations (reorganization energy, driving force, and spin-orbit coupling) and a rate theory (Marcus formula) are employed to quantitatively predict the ISC rates of isolated fullerenes Cn(n = 60-110). The results demonstrate that the driving force is not the only factor to predict the ISC rates. For instance, although C80, C82, and C110have the favorable driving force, the ISC rates are close to zero because of small spin obit couplings, whereas small ISC rates of C96and C100result from quite small reorganization energies. Meanwhile, in addition to well-known C60and C70, C92possesses good ISC property with obviously large ISC rate. C92also has a higher triplet-state energy than singlet-state oxygen energy; it may thus have a good photoactive property.
authors.affiliation: State Key Laboratory of Physical Chemistry of Solid Surfaces, Collaborative Innovation Center of Chemistry for Energy Materials, and College of Chemistry and Chemical Engineering, Xiamen University , Xiamen 361005, P. R. China.
authors.forename: Yuxiu
authors.initials: Y
authors.lastname: Liu
authors.affiliation: State Key Laboratory of Physical Chemistry of Solid Surfaces, Collaborative Innovation Center of Chemistry for Energy Materials, and College of Chemistry and Chemical Engineering, Xiamen University , Xiamen 361005, P. R. China.
authors.forename: Minsong
authors.initials: M
authors.lastname: Lin
authors.affiliation: State Key Laboratory of Physical Chemistry of Solid Surfaces, Collaborative Innovation Center of Chemistry for Energy Materials, and College of Chemistry and Chemical Engineering, Xiamen University , Xiamen 361005, P. R. China.
authors.forename: Yi
authors.identifier: http://orcid.org/0000-0003-1711-4250
authors.initials: Y
authors.lastname: Zhao