Nanotechnology, volume 22, issue 31, pages 315703
pH-sensitive photoluminescence for aqueous thiol-capped CdTe nanocrystals
Publication type: Journal Article
Publication date: 2011-07-05
Journal:
Nanotechnology
Quartile SCImago
Q1
Quartile WOS
Q2
Impact factor: 3.5
ISSN: 09574484, 13616528
General Chemistry
General Materials Science
Electrical and Electronic Engineering
Mechanical Engineering
Bioengineering
Mechanics of Materials
Abstract
pH-sensitive photoluminescence (PL) is an important property of aqueous nanocrystals (NCs) towards NCs-based intelligent applications. Previous works mainly focused on the effect of pH during NC growth process on PL of the aqueous NCs. The effect of pH during application process on PL of as-prepared NCs is still not fully understood. In this work, we brought out a general mechanism for the pH-sensitive PL behaviors of as-prepared aqueous CdTe NCs capped by aqueous thiol ligands, such as carboxylic-acid-terminated 3-mercaptopropionic acid (MPA) and thioglycolic acid (TGA) ligands, hydroxyl-terminated 1-thioglycerol (TG) ligands and amine-terminated 2-mercaptoethylamine (MA) ligands. A major contribution of this work is finding the key role of ligand terminal groups in the diffuse process of free Cd-ligand complexes toward NCs. This terminal group effect is the main reason for PL alteration of NCs during pH adjustment process. Besides the terminal group effect, PL of aqueous NCs is also affected by the aggregation effect, the thiol group effect and the counter ion effect. These effects make different contributions to PL of NCs at different pH ranges. By using this mechanism, we successfully explained the complex pH-sensitive PL behaviors of MPA, TGA, TG and MA-capped CdTe NCs.
Top-30
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1 publication, 3.03%
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1 publication, 3.03%
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1 publication, 3.03%
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1 publication, 3.03%
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Citations by publishers
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Elsevier
9 publications, 27.27%
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Springer Nature
8 publications, 24.24%
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Wiley
5 publications, 15.15%
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3 publications, 9.09%
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World Scientific
1 publication, 3.03%
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Autonomous Non-profit Organization Editorial Board of the journal Uspekhi Khimii
1 publication, 3.03%
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- We do not take into account publications without a DOI.
- Statistics recalculated only for publications connected to researchers, organizations and labs registered on the platform.
- Statistics recalculated weekly.
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Xu S. et al. pH-sensitive photoluminescence for aqueous thiol-capped CdTe nanocrystals // Nanotechnology. 2011. Vol. 22. No. 31. p. 315703.
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Xu S., Wang C., Zhang H., Wang Z., Yang B., Cui Y. pH-sensitive photoluminescence for aqueous thiol-capped CdTe nanocrystals // Nanotechnology. 2011. Vol. 22. No. 31. p. 315703.
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TY - JOUR
DO - 10.1088/0957-4484/22/31/315703
UR - https://doi.org/10.1088/0957-4484/22/31/315703
TI - pH-sensitive photoluminescence for aqueous thiol-capped CdTe nanocrystals
T2 - Nanotechnology
AU - Xu, Shuhong
AU - Wang, Chunlei
AU - Zhang, Hao
AU - Wang, Zhuyuan
AU - Yang, Bai
AU - Cui, Yiping
PY - 2011
DA - 2011/07/05 00:00:00
PB - IOP Publishing
SP - 315703
IS - 31
VL - 22
SN - 0957-4484
SN - 1361-6528
ER -
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@article{2011_Xu,
author = {Shuhong Xu and Chunlei Wang and Hao Zhang and Zhuyuan Wang and Bai Yang and Yiping Cui},
title = {pH-sensitive photoluminescence for aqueous thiol-capped CdTe nanocrystals},
journal = {Nanotechnology},
year = {2011},
volume = {22},
publisher = {IOP Publishing},
month = {jul},
url = {https://doi.org/10.1088/0957-4484/22/31/315703},
number = {31},
pages = {315703},
doi = {10.1088/0957-4484/22/31/315703}
}
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MLA
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Xu, Shuhong, et al. “pH-sensitive photoluminescence for aqueous thiol-capped CdTe nanocrystals.” Nanotechnology, vol. 22, no. 31, Jul. 2011, p. 315703. https://doi.org/10.1088/0957-4484/22/31/315703.