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The effects of oxygen and boron functionalization on the optical properties of dithienothiophenes

机译:氧和硼官能化对二噻吩并噻吩光学性质的影响

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We study the optical properties of dithienothiophene functionalized with lateral dimesitylboryl groups and/or oxygen atoms at the central thienyl sulphur atom. The excitation energies, of these systems are computed using first-principles time-dependent density functional theory, and the results are discussed and compared with measured absorption spectra. The agreement between theoretical and experimental results is very good. It is found that the oxygen and the boron functionalization modifies the lowest unoccupied molecular orbital, and thus optical properties, in a different way. Moreover if the boron and the oxygen functionalization are combined together, the effects of the former dominate. (c) 2006 Elsevier B.V. All.rights reserved.
机译:我们研究了在中心噻吩硫原子上被侧向二甲二苯乙烯基和/或氧原子官能化的二噻吩并噻吩的光学性质。这些系统的激发能是根据第一原理的时变密度泛函理论计算的,并对结果进行了讨论并与测得的吸收光谱进行了比较。理论和实验结果之间的一致性很好。发现氧和硼官能化以不同的方式修饰了最低的未占据分子轨道,从而改变了光学性质。此外,如果将硼和氧官能化结合在一起,则前者的作用占主导。 (c)2006 Elsevier B.V.保留所有权利。

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