Emission switching in carbon dots coated CdTe quantum dots driving by pH dependent hetero-interactions

被引：18

作者：

Dai, Xiao ^{[1
,2
]}

Wang, Hao ^{[1
,2
]}

Qian, Zhicheng ^{[3
]}

Yi, Qinghua ^{[1
,2
]}

Wang, Yun ^{[1
,2
]}

Cong, Shan ^{[1
,2
]}

Zhao, Jie ^{[1
,2
]}

Sun, Yinghui ^{[1
,2
]}

Huang, Jianwen ^{[4
]}

Xiong, Jie ^{[4
]}

Luo, Hongmei ^{[5
]}

Zou, Guifu ^{[1
,2
]}

机构：

[1] Soochow Univ, Coll Phys Optoelect & Energy, Suzhou 215006, Peoples R China

[2] Soochow Univ, Collaborat Innovat Ctr Suzhou Nano Sci & Technol, Suzhou 215006, Peoples R China

[3] Xi An Jiao Tong Univ, Sch Elect & Informat Engn, Xian 710049, Peoples R China

[4] Univ Elect Sci & Technol China, State Key Lab Elect Thin Films & Integrated Devic, Chengdu 610054, Peoples R China

[5] New Mexico State Univ, Dept Chem & Mat Engn, Las Cruces, NM 88003 USA

来源：

APPLIED PHYSICS LETTERS | 2015年 / 107卷 / 20期

基金：

中国国家自然科学基金;

关键词：

ULTRAFAST CHARGE-TRANSFER; NANOPARTICLES; DYNAMICS; NITROGEN; BEHAVIOR;

D O I：

10.1063/1.4936174

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Due to the different emission mechanism between fluorescent carbon dots and semiconductor quantum dots (QDs), it is of interest to explore the potential emission in hetero-structured carbon dots/semiconducting QDs. Herein, we design carbon dots coated CdTe QDs (CDQDs) and investigate their inherent emission. We demonstrate switchable emission for the hetero-interactions of the CDQDs. Optical analyses indicate electron transfer between the carbon dots and the CdTe QDs. A heterojunction electron process is proposed as the driving mechanism based on N atom protonation of the carbon dots. This work advances our understanding of the interaction mechanism of the heterostructured CDQDs and benefits the future development of optoelectronic nanodevices with new functionalities. (c) 2015 AIP Publishing LLC.

引用

页数：4

共 50 条

[11] Poly(oxanorbornene)-Coated CdTe Quantum Dots as Antibacterial Agents
Williams, Denise N.
Saar, Julia S.
Bleicher, Vera
Rau, Sibylle
Lienkamp, Karen
Rosenzweig, Zeev
ACS APPLIED BIO MATERIALS, 2020, 3 (02): : 1097 - 1104
[12] MSA capped CdTe quantum dots for pH sensing application
Nideep, T. K.
Ramya, M.
Sony, U.
Kailasnath, M.
MATERIALS RESEARCH EXPRESS, 2019, 6 (10)
[13] The Interactions of Glutathione-Capped CdTe Quantum Dots with Trypsin
Bingjun Yang
Rutao Liu
Xiaopeng Hao
Yongzhong Wu
Jie Du
Biological Trace Element Research, 2012, 146 : 396 - 401
[14] The Interactions of Glutathione-Capped CdTe Quantum Dots with Trypsin
Yang, Bingjun
Liu, Rutao
Hao, Xiaopeng
Wu, Yongzhong
Du, Jie
BIOLOGICAL TRACE ELEMENT RESEARCH, 2012, 146 (03) : 396 - 401
[15] Synthesis of cysteamine-coated CdTe quantum dots for the detection of bisphenol A
Kuang, Rui
Kuang, Xuan
Pan, Siyi
Zheng, Xiaodong
Duan, Jiacai
Duan, Yaqing
MICROCHIMICA ACTA, 2010, 169 (1-2) : 109 - 115
[16] Spectroscopic studies on the interactions between CdTe quantum dots coated with different ligands and human serum albumin
Lai, Lu
Lin, Chen
Xu, Zi-Qiang
Han, Xiao-Le
Tian, Fang-Fang
Mei, Ping
Li, Dong-Wei
Ge, Yu-Shu
Jiang, Feng-Lei
Zhang, Ye-Zhong
Liu, Yi
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY, 2012, 97 : 366 - 376
[17] Size-dependent energy levels of CdTe quantum dots
Masumoto, Y
Sonobe, K
PHYSICAL REVIEW B, 1997, 56 (15): : 9734 - 9737
[18] Controlled membrane interactions by lipid coated quantum dots
Morgenstein, Lion
Tsubary, Merav
Atkins, Ayelet
Grupi, Asaf
Weiss, Shimon
BIOPHYSICAL JOURNAL, 2022, 121 (03) : 73 - 73
[19] A facile approach to synthesize carbon quantum dots with pH-dependent properties
Lei, Chih-Wei
Hsieh, Meng-Lin
Liu, Wei-Ren
DYES AND PIGMENTS, 2019, 169 : 73 - 80
[20] Rapidly detecting antibiotics with magnetic nanoparticle coated CdTe quantum dots
Chen, Chao-Xi
Li, Yu-Han
Zhou, Yun-Lu
Zhang, Jun-Hao
Wei, Qi-Zhuang
Dai, Tao
Wang, Lu
RSC ADVANCES, 2020, 10 (04) : 1966 - 1970

← 1 2 3 4 5 →