Up-converted emission of colloidal nanocrystals containing dendrimers

被引：1

作者：

Dou, K

Xu, Z

Wang, XJ ^{[1
]}

Apblett, A

Collins, T

机构：

[1] Georgia So Univ, Dept Phys, Statesboro, GA 30460 USA

[2] Oklahoma State Univ, Dept Phys, Stillwater, OK 74078 USA

[3] Oklahoma State Univ, Dept Chem, Stillwater, OK 74078 USA

[4] Chinese Acad Sci, Changchun Inst Opt Fine Mech & Phys, Key Lab Excited State Proc, Changchun 130033, Peoples R China

[5] Georgia So Univ, Dept Phys, Statesboro, GA 30460 USA

来源：

JOURNAL OF LUMINESCENCE | 2004年 / 108卷 / 1-4期

关键词：

nanocrystals; nanostructured materials; excited state dynamics; up-conversion;

D O I：

10.1016/j.jlumin.2004.01.075

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

The spectroscopic and microscopic investigation of polystyrene nanocrystals containing dodecanamide-modified poly(propyleneimine) dendrimers was performed. Nearly monodisperse colloidal particles have diameters of 60 nm. Up-converted emission in the deep blue around 430 nm was observed upon excitation with lower-energy photons from 480 to 540 rim. The intersystem crossing time constant was estimated to be I I ps through an up-converted emission measurement. (C) 2004 Elsevier B.V. All rights reserved.

引用

页码：355 / 358

页数：4

共 12 条

[1] Facile conversion of colloidal crystals to ordered porous polymer nets [J].