Effect of temperature on the optical properties of polyethylenimine-stabilized CdS nanoparticles

被引：1

作者：

Raevskaya, A. E. ^{[1
]}

Grodzyuk, G. Ya. ^{[1
]}

Stroyuk, A. L. ^{[1
]}

Kuchmii, S. Ya. ^{[1
]}

Plyusnin, V. F. ^{[2
]}

机构：

[1] Natl Acad Sci Ukraine, LV Pisarzhevskii Inst Phys Chem, UA-03028 Kiev, Ukraine

[2] Russian Acad Sci, Siberian Branch, Inst Chem Kinet & Combust, Novosibirsk 630090, Russia

来源：

THEORETICAL AND EXPERIMENTAL CHEMISTRY | 2012年 / 48卷 / 02期

关键词：

cadmium chalcogenides; CdS nanoparticles; quantum dots; photoluminescence; polyethylenimine; temperature dependence; QUANTUM DOTS; DEPENDENCE; PHOTOLUMINESCENCE; ENERGY; NANOCRYSTALS; NANOSCALE; EMISSION; GAP;

D O I：

10.1007/s11237-012-9246-x

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

An unusually pronounced temperature dependence was found for photoluminescence intensity and energy of size quantization levels of polyethylenimine-stabilized CdS nanoparticles with diameter similar to 1.8 nm in the range 280-353 K. Evidence was given to support the hypothesis that these changes result from the reversible dissociation of a complex of the polymer amino groups with coordinatively unsaturated Cd(II) ions on the nanoparticle surface and the completion of the coordination sphere of these ions by water molecules participating in the non-radiative dissipation of the electronic excitation energy of CdS nanoparticles. Promise for the use of such nanoparticles is found in the development of sensor systems for monitoring the temperature of microvolumes and the diagnosis of heat exchange phenomena.

引用

页码：106 / 112

页数：7

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