Luminescence of nanocomposites obtained via SCF impregnation of polymer powders with CdSe quantum dots

The luminescence features have been studied in ultradisperse CdSe quantum dot-based composites embedded in low-density polyethylene (LDPE) and polytetrafluoroethylene (PTFE) powders using supercritical carbon dioxide. The thermal treatment of the LDPE sample in air is shown to cause the CdSe photolu...

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Published inRussian journal of physical chemistry. B Vol. 10; no. 7; pp. 1033 - 1038
Main Authors Rybaltovskii, A. O., Zavorotnyi, Yu. S., Minaev, N. V., Popov, V. K., Rubashnaya, D. S., Timashev, P. S.
Format Journal Article
LanguageEnglish
Published Moscow Pleiades Publishing 01.12.2016
Springer Nature B.V
Subjects
Cadmium selenides
Chemistry
Chemistry and Materials Science
Nanocomposites
Photoluminescence
Physical Chemistry
Quantum dots
low-density polyethylene
quantum dots
diffusion embedding
supercritical carbon dioxide
photoluminescence
polymer nanocomposite
polytetrafluoroethylene
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Summary:The luminescence features have been studied in ultradisperse CdSe quantum dot-based composites embedded in low-density polyethylene (LDPE) and polytetrafluoroethylene (PTFE) powders using supercritical carbon dioxide. The thermal treatment of the LDPE sample in air is shown to cause the CdSe photoluminescence band shift toward the shorter wavelengths, whereas for PTFE it shifts to the longer wavelengths with a decrease in its integrated intensity. In both cases, the photoluminescence band behavior under near-UV radiation is determined by the photooxidation processes on the CdSe nuclei.
ISSN:1990-7931
1990-7923
DOI:10.1134/S1990793116070174