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Title: Electrogenerated Chemiluminescence of Near-Infrared-Emitting CdSe@CdSe Nanorods in Aqueous Solution

Abstract

Electrogenerated chemiluminescence (ECL) was observed from TOPO-capped CdSe@CdSe nanorods (NRs) depositing on a metal electrode in phosphate buffer solution (PBS). Two ECL peaks at -1.05 and -1.33 V in pH 9.2, 0.1 M PBS were found under cyclic voltammetric conditions. Cyclic voltammetry of this solution displayed no distinctive features, on the other hand, light emission was observed during cyclic potential scans. Additionally, the photoluminescence (PL) spectrum showed an emission maximum at 692 nm. The spectrum of ECL possesses one peak which coincides very well with the PL spectrum of the nanorods film. The mechanism for ECL peaks was proposed. Electron transfer reactions between charged nanorods and molecular redox-active coreactants such as dissolved oxygen and H2O2 or between positively and negatively charged nanorods occurred that led to electron and hole annihilation, producing light.

Authors:
ORCiD logo [1];  [2];  [2];  [2];  [3]
+ Show Author Affiliations
  1. Changzhou Inst. of Technology (China); Univ. of Arizona, Tucson, AZ (United States)
  2. Univ. of Arizona, Tucson, AZ (United States)
  3. Univ. of Arizona, Tucson, AZ (United States); Seoul National Univ. (South Korea)
Publication Date:
Research Org.:
Univ. of Arizona, Tucson, AZ (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
OSTI Identifier:
1803346
Grant/Contract Number:  
SC0018285
Resource Type:
Accepted Manuscript
Journal Name:
Journal of the Electrochemical Society (Online)
Additional Journal Information:
Journal Name: Journal of the Electrochemical Society (Online); Journal Volume: 167; Journal Issue: 6; Journal ID: ISSN 1945-7111
Publisher:
IOP Publishing
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; Electrochemistry; Materials science; Electrochemiluminescence; CdSe@CdSe nanorods; Near-infrared-emitting; Aqueous solution

Citation Formats

Zhuang, Yafeng, Zheng, Yilong, Saavedra, S. Scott, Pavlopoulos, Nicholas G., and Pyun, Jeffrey. Electrogenerated Chemiluminescence of Near-Infrared-Emitting CdSe@CdSe Nanorods in Aqueous Solution. United States: N. p., 2020. Web. doi:10.1149/1945-7111/ab864c.
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Zhuang, Yafeng, Zheng, Yilong, Saavedra, S. Scott, Pavlopoulos, Nicholas G., & Pyun, Jeffrey. Electrogenerated Chemiluminescence of Near-Infrared-Emitting CdSe@CdSe Nanorods in Aqueous Solution. United States. https://doi.org/10.1149/1945-7111/ab864c
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Zhuang, Yafeng, Zheng, Yilong, Saavedra, S. Scott, Pavlopoulos, Nicholas G., and Pyun, Jeffrey. Tue . "Electrogenerated Chemiluminescence of Near-Infrared-Emitting CdSe@CdSe Nanorods in Aqueous Solution". United States. https://doi.org/10.1149/1945-7111/ab864c. https://www.osti.gov/servlets/purl/1803346.
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@article{osti_1803346,
title = {Electrogenerated Chemiluminescence of Near-Infrared-Emitting CdSe@CdSe Nanorods in Aqueous Solution},
author = {Zhuang, Yafeng and Zheng, Yilong and Saavedra, S. Scott and Pavlopoulos, Nicholas G. and Pyun, Jeffrey},
abstractNote = {Electrogenerated chemiluminescence (ECL) was observed from TOPO-capped CdSe@CdSe nanorods (NRs) depositing on a metal electrode in phosphate buffer solution (PBS). Two ECL peaks at -1.05 and -1.33 V in pH 9.2, 0.1 M PBS were found under cyclic voltammetric conditions. Cyclic voltammetry of this solution displayed no distinctive features, on the other hand, light emission was observed during cyclic potential scans. Additionally, the photoluminescence (PL) spectrum showed an emission maximum at 692 nm. The spectrum of ECL possesses one peak which coincides very well with the PL spectrum of the nanorods film. The mechanism for ECL peaks was proposed. Electron transfer reactions between charged nanorods and molecular redox-active coreactants such as dissolved oxygen and H2O2 or between positively and negatively charged nanorods occurred that led to electron and hole annihilation, producing light.},
doi = {10.1149/1945-7111/ab864c},
journal = {Journal of the Electrochemical Society (Online)},
number = 6,
volume = 167,
place = {United States},
year = {Tue Apr 14 00:00:00 EDT 2020},
month = {Tue Apr 14 00:00:00 EDT 2020}
}
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Journal Article:
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Publisher's Version of Record
https://doi.org/10.1149/1945-7111/ab864c
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