WHITE LIGHT EMITTING MATERIAL, PREPARATION METHOD THEREOF, AND APPLICATION THEREOF
申请人:SOUTH UNIVERSITY OF SCIENCE AND TECHNOLOGY OF CHINA
公开号:US20210036234A1
公开(公告)日:2021-02-04
A white light emitting material having a chemical structural formula represented by formula (I), a preparation method thereof and application thereof. The preparation method comprises subjecting tris(4-iodophenyl)amine and 4-methoxyphenylacetylene or tris(4-iodophenyl)amine and methyl 4-ethynylbenzoate to a coupling reaction under protection of a protective gas and catalysis of a Pd/Cu mixed catalyst, to obtain the white light emitting material. A novel temperature-sensitive light emitting material is synthesized through a one-step method. The material is applied to the field of diode luminescence based on the temperature-sensitive characteristic. White light luminescence can be finally realized only by reasonably controlling the temperature and duration time during heating a substrate. Compared with the existing art, the method greatly saves raw material costs and manufacturing process costs, and provides a novel idea and strategy for use of a white organic light emitting diode.
Two-Photon Photosensitized Production of Singlet Oxygen: Sensitizers with Phenylene−Ethynylene-Based Chromophores
作者:Sean P. McIlroy、Emiliano Cló、Lars Nikolajsen、Peter K. Frederiksen、Christian B. Nielsen、Kurt V. Mikkelsen、Kurt V. Gothelf、Peter R. Ogilby
DOI:10.1021/jo0482099
日期:2005.2.1
Singlet molecular oxygen (a1Δg) has been produced and optically monitored in time-resolved experiments upon nonlinear two-photon excitation of photosensitizers that contain triple bonds as an integral part of the chromophore. Both experiments and ab initio computations indicate that the photophysical properties of alkyne-containing sensitizers are similar to those in the alkene-containing analogues
A series of water-soluble fluorescent dendritic compounds composed of phenylene-ethynylene repeating units and anionic carboxylate or cationic ammonium peripheral groups were synthesized. The first generation fluorescent dendrimer containing nine phenylene-ethynylene units and six carboxylate peripheral groups exhibited a highly selective fluorescence quenching by Hg2+ ions. The Stern-Volmer constant (K-sv) was 33,700 M-1 in aqueous media in the presence of Triton X-100 surfactant.