有机微棒的橙蓝橙嵌段一维异质结构，用于白光发射。

Orange-blue-orange triblock one-dimensional heterostructures of organic microrods for white-light emission.

机构信息

Beijing National Laboratory for Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190.

出版信息

J Am Chem Soc. 2010 Feb 17;132(6):1742-3. doi: 10.1021/ja9084435.

DOI:10.1021/ja9084435

PMID:20102187

Abstract

1D triblock hetrostructures with striping patterns have been synthesized by doping 1,3-diphenyl-2-pyroline (DP) microrods with 4-(dicyanomethylene)-2-methyl-6-(p-dimethylaminostyryl)-4H-pyran (DCM) molecules selectively at both ends. The middle stripe of triblock microds emit the blue light, while both ends emit orange light due to the efficient FET from excited DP to DCM molecules (right inset). Although triblock microrods show microarea heterogeneity in the striping pattern, they generate macroscopic high-quality white-light emission (WLE) in both the colloidal suspension (left inset) and the solid state with a photoluminescence efficiency as high as 36 +/- 5%.

摘要

一维嵌段杂化结构具有条纹图案，通过选择性地在两端掺杂 1,3-二苯基-2-吡咯啉（DP）微棒和 4-（二氰基亚甲基）-2-甲基-6-（对二甲氨基苯乙烯基）-4H-吡喃（DCM）分子来合成。嵌段微棒的中间条纹发射蓝光，而由于从激发的 DP 分子到 DCM 分子的有效 FET（右插图），两端发射橙色光。尽管嵌段微棒在条纹图案中表现出微区异质性，但它们在胶体悬浮液（左插图）和固态中都产生宏观高质量的白光发射（WLE），光致发光效率高达 36 +/- 5%。