Fluorescence of ZnO:SiO2 and SnO2:SiO2 Nanosized Composite Films under the Action of Human Serum Albumin

摘要

Nanosized materials based of metal oxides, such as SnO2, ZnO, TiO2, and ITO, are widely used for developing (bio)sensors and methods of protein-protein interaction detection [1, 2], in photovoltaic studies and development of solar energy converters, photosynthesis modeling [3-5], and in many other fields. One of the key advantages of nanosized systems is their developed surface. The area of such a surface involved in the interaction with an external medium can be several orders of magnitude higher than that of a massive sample. In addition, the character of interaction of a material with an external medium can depend on the concentration of surface adsorption centers of different energy [6, 7]. The energy characteristics of surface centers can be tailored by varying the synthesis and sample treatment conditions.