Aqueous Suspensions of Single Wall Carbon Nanotubes: Degree of Aggregation into Bundles and Optical Properties

Авторы: Venediktova A.V., Bocharov V.N., Vlasov A.Yu, Kislyakov I.M., Kiselev V.M., Kats E.A., Obraztsova E.D., Pozharov A.S., Povarov and S.A
Журнал: OPTICS AND SPECTROSCOPY C/C OF OPTIKA I SPECTROSKOPIIA
Том: 116
Год издания: 2014
Первая страница: 418
Последняя страница: 423
DOI: 10.1134/S0030400X14030230
Аннотация: Aqueous suspensions of nanotubes, as well as the structure and optical properties of their aggre gates (bundles), are studied by spectroscopy and highresolution electron microscopy. The structure of nanoparticles is controlled by varying the ultrasonication time during preparation of suspensions. It is found that the defectiveness of nanotubes increases with decreasing bundle size. A correlation is shown to take place between the suspension preparation regime, the structure of nanoparticles, and the relaxation of the photo excitation energy of their electronic shells. It is found that the efficiency of photoexcitation energy conversion into heat increases with increasing degree of aggregation of nanotubes into bundles.
Добавил в систему: Образцова Елена Дмитриевна

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