作者: G. F. Novikov , M. V. Gapanovich , E. V. Rabenok , L. M. Bogdanova , L. I. Kuzub
DOI: 10.1007/S11172-011-0066-2
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摘要: Sols of silver nanoparticles in toluene were studied by broadband dielectric spectroscopy (10−3–105 Hz). The frequency dependences the specific alternating current (ac) conductivity and complex electric modulus used to estimate temperature/frequency intervals long- short-range charge transfer occurs, respectively. A considerable increase (by more than 30 °C) Vogel temperature T0 glass transition Tg sols compared with pure solvent was found. It can be hypothesized that these cooperative effects reflect initial stage superlattice formation. Although characteristics are generally controlled relaxation, response observed high-frequency range (1–103 Hz) at low temperatures (from −50 +10 °C). This results from presence solution. is supposed relaxation caused motion ion impurities on Ag nanoparticle surface within carboxylate ligands shell. properties films strongly depend both conditions film preparation. Like sols, direct (dc) due impurities.