Strong visible photoluminescence of TEEDPS-modified silica MCM-41 materials

被引：11

作者：

Chen, HG ^{[1
]}

Shi, JL ^{[1
]}

Chen, HR ^{[1
]}

Li, YS ^{[1
]}

Hua, ZL ^{[1
]}

Yan, DS ^{[1
]}

机构：

[1] Chinese Acad Sci, Shanghai Inst Ceram, State Key Lab High Performance Ceram & Superfine, Shanghai 200050, Peoples R China

来源：

APPLIED PHYSICS B-LASERS AND OPTICS | 2003年 / 77卷 / 01期

关键词：

D O I：

10.1007/s00340-003-1251-2

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

The photoluminescence (PL) of mesoporous silica MCM-41 modified with triethoxy-3-ethylenediaminepropy silane (TEEDPS) has been investigated using UV-Vis fluorescence and absorption spectroscopy methods and thermogravimetry. Results suggest that the TEEDPS-modified MC 41 has a greatly enhanced (by 20 times) PL intensity at 420 nm relative to that of TEEDPS, and this enhanced PL still remains even after post heat treatment at 180 degreesC under vacuum (yielding a sample MTV). Meanwhile, a strong PL band at 450 nm appeared in the sample MTV when excited at 380 nm. The TEEDPS-modified material could be partly oxidized at 180degreesC in air (yielding a sample MTA); therefore obvious absorption was found up to about 600 nut. The interaction between this absorption and the vacancy-related emission resulted in the maximum of the emission bands of the sample MTA at around 515 nm when excited at 440 nm.

引用

页码：89 / 91

页数：3

共 17 条

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