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

Zhuang, Yafeng; Zheng, Yilong; Saavedra, S. Scott; Pavlopoulos, Nicholas G.; Pyun, Jeffrey

doi:10.1149/1945-7111/ab864c

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

Journal Article · Tue Apr 14 00:00:00 EDT 2020 · Journal of the Electrochemical Society (Online)

DOI:https://doi.org/10.1149/1945-7111/ab864c· OSTI ID:1803346

^[1]; Zheng, Yilong ^[2]; Saavedra, S. Scott ^[2]; Pavlopoulos, Nicholas G. ^[2]; Pyun, Jeffrey ^[3]

Changzhou Inst. of Technology (China); Univ. of Arizona, Tucson, AZ (United States)
Univ. of Arizona, Tucson, AZ (United States)
Univ. of Arizona, Tucson, AZ (United States); Seoul National Univ. (South Korea)

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.

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Research Organization:: Univ. of Arizona, Tucson, AZ (United States)

Sponsoring Organization:: USDOE Office of Science (SC), Basic Energy Sciences (BES)

Grant/Contract Number:: SC0018285

OSTI ID:: 1803346

Journal Information:: Journal of the Electrochemical Society (Online), Vol. 167, Issue 6; ISSN 1945-7111

Publisher:: IOP PublishingCopyright Statement

Country of Publication:: United States

Language:: English

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36 MATERIALS SCIENCE
Electrochemistry
Materials science
Electrochemiluminescence
CdSe@CdSe nanorods
Near-infrared-emitting
Aqueous solution

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

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