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论文类型：期刊论文

发表时间：2016-05-01

发表刊物：ZEITSCHRIFT FUR ANORGANISCHE UND ALLGEMEINE CHEMIE

收录刊物：SCIE

卷号：642

期号：8

页面范围：597-602

ISSN号：0044-2313

关键字：Solvate molecules; Platinum; Luminescence; Pt-Pt contact; Packing structure

摘要：A platinum(II) complex Pt(DiBrbpy)Cl-2 (1) based on 4,4'-dibromo-2,2'-bipyridine ligand was synthesized and characterized. Interestingly, two solvated phases of 1 with different amounts of crystalline CH2Cl2 molecules, 1.1/3(CH2Cl2) (yellow) and 1.3/2(CH2Cl2) (red), were obtained. In the solid state, 1.1/3(CH2Cl2) exhibits a 3D supramolecular structure based on Pt(DiBrbpy)Cl-2 monomer and emits a weak yellow luminescence at 541 nm (579, sh). In contrast, 1.3/2(CH2Cl2) displays a 2D layer structure based on Pt(DiBrbpy)Cl-2 dimeric units and has a strong red luminescence centered at 624 nm. The results show that crystalline solvate molecule amount can not only influence the packing structures but also photophysical properties of the platinum moiety in solid state. Furthermore, the absorption and luminescence spectra of both phases were studied by TD-DFT calculations.