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Relevant academic research and scientific papers

Have ambipolar carrier transmission property based on novel platinum(II) complexes: Synthesis, photophysical properties, liquid crystalline characteristics, polarized luminescence

A series of new platinum (II) complexes were obtained, where 2-phenylpyridine derivatives are used as the main ligand and 5-substitued tetrazole are used as the auxiliary ligand. Although the complexes with one or without any peripheral flexible around rigid core do not reveal liquid crystallinity, the complexes with three flexible alkoxy chains attached to 2-phenylpyridine and tetrazole display liquid crystalline property. In order to investigate the self-assembly behavior of the liquid crystalline complexes, their polarized luminescence is researched, and the maximum polarization ratio can reach 7.1 at room temperature. Moreover, the ambipolar carrier mobility was measured in these neutral cyclometalated platinum (II) complexes, the electron mobility and hole mobility can reach 3.3 × 10?4 cm2/(V·S) and 6.3 × 10?5 cm2/(V·S), respectively.

New phosphorescent platinum(ii) complexes: lamellar mesophase and mechanochromism

Several new square planar platinum(ii) complexes based on modified 2-phenylpyridine derivatives as the main ligand and picolinic acid as the auxiliary ligand were synthesized and their photophysical properties, and mechanochromic and liquid crystalline behavior were investigated. It is found that only the Pt-L1 complexes, in which one flexible long chain is attached to each end of 2-phenylpyridine, display monotropic smectic liquid crystalline behavior. Moreover, mechanochromism has been observed by grinding the solid complexes. It seems that the liquid crystalline and mechanochromic properties of these complexes are relative to the number of flexible alkoxy chains in the cyclometalated ligand.

Metallomesogens based on platinum(ii) complexes: Synthesis, luminescence and polarized emission

Two series of heteroleptic cyclometalated platinum(ii) complexes [(C nOppy)Pt(acac) and (CnOFppy)Pt(acac)] have been prepared. Their liquid-crystal and optophysical properties were studied, in which C nOppy is 2-(4-alkoxyp