Investigation on the mechanism of the photoluminescence MCM-41

被引：9
|
作者：
He, NY [1 ]
Ge, SX
Yang, C
Hu, C
Gu, M
机构：
[1] Zhuzhou Inst Technol, Lab Packing Mat & New Technol, Zhuzhou 412008, Peoples R China
[2] Southeast Univ, Key Lab Mol & Biomol Elect, Minist Educ, Nanjing 210096, Peoples R China
[3] Nanjing Normal Univ, Coll Chem & Environm Sci, Nanjing 210097, Peoples R China
[4] Nanjing Univ, Natl Lab Solid State Microstruct, Nanjing 210093, Peoples R China
[5] Nanjing Univ, Inst Solid State Phys, Nanjing 210093, Peoples R China
来源：
MATERIALS RESEARCH BULLETIN | 2004年 / 39卷 / 12期
关键词：
nanostructures; optical materials; optical properties; defects; surface properties;
D O I：
10.1016/j.materresbull.2004.05.018
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Pure siliceous MCM-41 sample was synthesized in ethylenediamine (EDA) medium. MCM-41 sample calcined at 813 K showed the most strong photoluminescent (PL) effect, while those calcined at 1073 K and 1323 K only showed weak photoluminescence. The intensity of photoluminescence decreased as the calcined temperature increased. By nuclear magnetic resonance (NMR) spectroscopy and infrared (IR) investigation, it was demonstrated that both the Al-depleted defect sites and silanol contents were responsible for the strong PL effect of the investigated MCM-41 samples. It was also suggested that the mesoporous channel structure of MCM-41 influences the investigated PL effect. (C) 2004 Elsevier Ltd. All rights reserved.
引用
收藏
页码：1931 / 1937
页数：7
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