The effect of ionic strength on spectral properties of quantum dots and aluminum phthalocyanine complexes


Дәйексөз келтіру

Толық мәтін

Ашық рұқсат Ашық рұқсат
Рұқсат жабық Рұқсат берілді
Рұқсат жабық Тек жазылушылар үшін

Аннотация

The effect of ionic strength on spectral properties of negatively charged semiconductor (CdSe/ZnS) nanocrystals (quantum dots, QDs) and polycationic aluminum phthalocyanines (PCs) is considered. A QD/PC complex, formed via self-assembly, remains stable throughout a wide range of ionic strength values of a solution and [PC]/[QD] concentration ratio. The efficiency of nonradiative energy transfer from QDs to PCs rises with an increase in the ionic strength of solution. The fluorescence amplification factor of PC reduces with an increase in number of PC molecules in a complex with a quantum dot, reaching negative values at high [PC]/[QD] ratios. This is probably due to the decrease in the effect of energy migration on the total PC fluorescence upon its own significant absorption ability of a large number of acceptors. These effects are of interest to develop selection principles of components for hybrid complexes stabilized with electrostatic interaction.

Авторлар туралы

D. Gvozdev

Department of Biology

Хат алмасуға жауапты Автор.
Email: danil131054@mail.ru
Ресей, Moscow, 119234

E. Maksimov

Department of Biology

Email: danil131054@mail.ru
Ресей, Moscow, 119234

M. Strakhovskaya

Department of Biology; Federal Research and Clinical Center of Specialized Types of Health Care and Medical Technologies

Email: danil131054@mail.ru
Ресей, Moscow, 119234; Moscow, 115682

M. Ivanov

Department of Biology

Email: danil131054@mail.ru
Ресей, Moscow, 119234

V. Paschenko

Department of Biology

Email: danil131054@mail.ru
Ресей, Moscow, 119234

A. Rubin

Department of Biology

Email: danil131054@mail.ru
Ресей, Moscow, 119234

Қосымша файлдар

Қосымша файлдар
Әрекет
1. JATS XML

© Pleiades Publishing, Ltd., 2017