私密直播全婐app免费大渔直播,国产av成人无码免费视频,男女同房做爰全过程高潮,国产精品自产拍在线观看

當前位置:群英聚首 > 論文著作 > 正文
The broadened and red-shifted photoluminescence spectral emission of poly(N-vinylcarbazole) nanoparticles
來源:孔凡副研究員個人網站 發布日期:2009-12-16
作者:F. Kong, J. Liu, X.F. Li, Y. An, T. Qiu
關鍵字:Nanoparticles; Polymers; Optical properties; Luminescence; Conformation
論文來源:期刊
具體來源:Dyes and Pigments 84 (2010) 165–168
發表時間:2009年

Poly(N-vinylcarbazole) (PVK) nanoparticles have been prepared from tetrahydrofuran solutions with different concentrations via a reprecipitation method. The emission properties of the PVK nanoparticles are obviously different from those of the PVK solution and film. The photoluminescence (PL) spectra of the PVK nanoparticles become wide and red shift by comparison with those of the PVK solution and film. The repulsion between carbazole groups and poor solvent overcomes the steric hindrance of the carbazole groups, which is in favor of forming fully overlapping, sandwich-like configurations between neighboring carbazole groups in the PVK nanoparticles. It has been also found that the decay times of the excimers in the nanoparticles are shorter than those in the solution.

Copyright © 2005 Polymer.cn All rights reserved
中國聚合物網 版權所有
經營性網站備案信息

京公網安備11010502032929號

工商備案公示信息

京ICP證050801號

京ICP備12003651號

主站蜘蛛池模板: 通化县| 庆元县| 青州市| 巍山| 绵阳市| 宁城县| 隆回县| 韩城市| 西贡区| 大城县| 金沙县| 镇江市| 昌江| 博野县| 乡宁县| 镇沅| 达州市| 报价| 榆社县| 宽甸| 竹北市| 石泉县| 靖西县| 高青县| 雅安市| 定日县| 林口县| 原阳县| 东丽区| 改则县| 勃利县| 清远市| 凌海市| 景东| 沿河| 林甸县| 瑞昌市| 尼勒克县| 习水县| 蛟河市| 西宁市|