Greatly enhanced electrochemiluminescence of CdS nanocrystals upon heating in the presence of ammonia

被引：11

作者：

Wang, Haiyan ^{[1
]}

Zhang, Fuqiang ^{[1
]}

Tan, Zhian ^{[1
]}

Chen, Qiongfang ^{[1
]}

Wang, Lun ^{[1
]}

机构：

[1] Anhui Normal Univ, Coll Chem & Mat Sci, Anhui Key Lab Chemobiosensing, Wuhu 241000, Peoples R China

来源：

ELECTROCHEMISTRY COMMUNICATIONS | 2010年 / 12卷 / 05期

基金：

中国国家自然科学基金;

关键词：

Electrochemiluminescence; CdS nanocrystals; Ammonia; Heating; ELECTROGENERATED CHEMILUMINESCENCE; US NANOCRYSTALS; CDTE; PHOTOLUMINESCENCE;

D O I：

10.1016/j.elecom.2010.02.022

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

CdS nanocrystals (NCs) usually exhibit very weak electrochemiluminescence (ECL) emission. It is showed that when CdS NCs were treated by heating in the presence of ammonia (heated-CdS-NH3), greatly enhanced ECL was observed. The ECL of the heated-CdS-NH3 modified glassy carbon electrode (heated-CdS-NH3/GCE) in phosphate buffer solution (pH 7.0) containing 0.1 M K2S2O8 was ca. 310 times higher than that of CdS/GCE. The treatment caused the changes in the morphology and surface electronic structure of CdS NCs, which facilitated the reduction process of CdS, consequently improved the quantity of the excited states (CdS*), leading to enormous enhancement in ECL (c) 2010 Elsevier B.V. All rights reserved.

引用

页码：650 / 652

页数：3

共 20 条

[1] Semiconductor clusters, nanocrystals, and quantum dots [J].

Alivisatos, AP .

SCIENCE, 1996, 271 (5251) :933-937

[2] Electrochemistry and electrogenerated chemiluminescence of CdTe nanoparticles [J].

Bae, Y ;

Myung, N ;

Bard, AJ .

NANO LETTERS, 2004, 4 (06) :1153-1161

[3] A novel route to US nanocrystals with strong electrogenerated chemiluminescence [J].

Chen, Ming ;

Pan, Lijia ;

Huang, Zhuangqun ;

Cao, Jieming ;

Zheng, Youdou ;

Zhan, Haiqian .

MATERIALS CHEMISTRY AND PHYSICS, 2007, 101 (2-3) :317-321

[4] Enhanced solid-state electrochemiluminescence of CdS nanocrystals composited with carbon nanotubes in H2O2 solution [J].

Ding, Shou-Nian ;

Xu, Jing-Juan ;

Chen, Hong-Yuan .

CHEMICAL COMMUNICATIONS, 2006, (34) :3631-3633

[5] Electrochemistry and electrogenerated chemiluminescence from silicon nanocrystal quantum dots [J].

Ding, ZF ;

Quinn, BM ;

Haram, SK ;

Pell, LE ;

Korgel, BA ;

Bard, AJ .

SCIENCE, 2002, 296 (5571) :1293-1297

[6] Effect of Adenine on the Photoluminescence Properties and Stability of Water-Soluble CdTe Quantum Dots [J].

Feng, Xuejiao ;

Shang, Qingkun ;

Liu, Hongjian ;

Wang, Hongdan ;

Wang, Wenlan ;

Wang, Zhidan .

JOURNAL OF PHYSICAL CHEMISTRY C, 2009, 113 (17) :6929-6935

[7] Strongly photoluminescent CdTe nanocrystals by proper surface modification [J].

Gao, MY ;

Kirstein, S ;

Möhwald, H ;

Rogach, AL ;

Kornowski, A ;

Eychmüller, A ;

Weller, H .

JOURNAL OF PHYSICAL CHEMISTRY B, 1998, 102 (43) :8360-8363

[8] Highly Fluorescent CdTe@SiO2 Particles Prepared via Reverse Microemulsion Method [J].

Jing, Lihong ;

Yang, Chunhui ;

Qiao, Ruirui ;

Niu, Mu ;

Du, Meihong ;

Wang, Dayang ;

Gao, Mingyuan .

CHEMISTRY OF MATERIALS, 2010, 22 (02) :420-427

[9] Luminescence studies of heat treatment influence on size distribution of CdTe nanocrystals [J].

Krylyuk, SG ;

Strelchuk, VV ;

Kalytchuk, SM ;

Korbutyak, DV ;

Valakh, MY ;

Khalavka, YB ;

Feychuk, PI ;

Shcherbak, LP .

PHYSICA STATUS SOLIDI C - CURRENT TOPICS IN SOLID STATE PHYSICS, VOL 3, NO 4, 2006, 3 (04) :1074-+

[10] Spectroelectrochemistry of hollow spherical CdSe quantum dot assemblies in water [J].

Liu, Bo ;

Ren, Ting ;

Zhang, Jian-Rong ;

Chen, Hong-Yuan ;

Zhu, Jun-Jie ;

Burda, Clemens .

ELECTROCHEMISTRY COMMUNICATIONS, 2007, 9 (04) :551-557

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