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Title: Effect of pressure on the photoluminescence of polynucleotide-stabilized cadmium sulfide nanocrystals

Abstract

This work describes the effects of pressure on the photoluminescence of Q-CdS (quantum-confined cadmium sulfide) nanoparticles stabilized by hexametaphosphate, calf thymus DNA, polyadenylic acid, polyuridylic acid, and polyadenylic-uridylic acid in the pressure range from atmospheric pressure to 4 kbar. A marked difference is observed between Q-CdS/polyadenylic acid and that of Q-CdS/polyuridylic acid in terms of pressure-induced changes in the luminescence; coating the surface of each type of Q-CdS with cadmium hydroxide results in a leveling effect whereby only a steady diminution of emission intensity is observed in each case. A model involving pressure-induced perturbation of anionic sulfide hole traps at the semiconductor nanocrystal surface is proposed to explain these observations.

Authors:
;
Publication Date:
Research Org.:
Texas Christian Univ., Fort Worth, TX (US)
OSTI Identifier:
20001165
Resource Type:
Journal Article
Journal Name:
Chemistry of Materials
Additional Journal Information:
Journal Volume: 11; Journal Issue: 9; Other Information: PBD: Sep 1999; Journal ID: ISSN 0897-4756
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; PHOTOLUMINESCENCE; PRESSURE DEPENDENCE; CADMIUM SULFIDES; CRYSTALS; ADENYLIC ACID; URIDYLIC ACID; NUCLEOTIDES; CADMIUM HYDROXIDES

Citation Formats

Li, X., and Coffer, J.L. Effect of pressure on the photoluminescence of polynucleotide-stabilized cadmium sulfide nanocrystals. United States: N. p., 1999. Web. doi:10.1021/cm980485e.
Li, X., & Coffer, J.L. Effect of pressure on the photoluminescence of polynucleotide-stabilized cadmium sulfide nanocrystals. United States. doi:10.1021/cm980485e.
Li, X., and Coffer, J.L. Wed . "Effect of pressure on the photoluminescence of polynucleotide-stabilized cadmium sulfide nanocrystals". United States. doi:10.1021/cm980485e.
@article{osti_20001165,
title = {Effect of pressure on the photoluminescence of polynucleotide-stabilized cadmium sulfide nanocrystals},
author = {Li, X. and Coffer, J.L.},
abstractNote = {This work describes the effects of pressure on the photoluminescence of Q-CdS (quantum-confined cadmium sulfide) nanoparticles stabilized by hexametaphosphate, calf thymus DNA, polyadenylic acid, polyuridylic acid, and polyadenylic-uridylic acid in the pressure range from atmospheric pressure to 4 kbar. A marked difference is observed between Q-CdS/polyadenylic acid and that of Q-CdS/polyuridylic acid in terms of pressure-induced changes in the luminescence; coating the surface of each type of Q-CdS with cadmium hydroxide results in a leveling effect whereby only a steady diminution of emission intensity is observed in each case. A model involving pressure-induced perturbation of anionic sulfide hole traps at the semiconductor nanocrystal surface is proposed to explain these observations.},
doi = {10.1021/cm980485e},
journal = {Chemistry of Materials},
issn = {0897-4756},
number = 9,
volume = 11,
place = {United States},
year = {1999},
month = {9}
}