In situ and ex situ preparations of ZnO/poly-{trans-[RuCl2(vpy)4]/styrene} nanocomposites

Journal of the Brazilian Chemical Society

Universidade de Aveiro, Aveiro, Portugal¹  Dutra, Rosilene L.¹  Segala, Karen¹  Trindadeb, Tito¹  Franco, César V.¹  Universidade Federal de Santa Catarina, Florianópolis, Brazil¹  Pereira, Angela S.¹ 

关键词: ruthenium(II) complexes;    nanocomposites;    ZnO nanocrystals;   

DOI  :  10.1590/S0103-50532010001000026

学科分类：化学（综合）

来源: SciELO

【 摘 要 】

Nanosized semiconductor particles are of great scientific and technological interest because of their size-dependent electronic and optical properties. Semiconductor nanocrystals have been investigated, for example, as nano-fillers for diverse polymer matrices in order to produce new optically active materials. Here we report, for the first time, results concerning the preparation of nanocomposites made of ZnO nanocrystals (NCs) incorporated in the co-polymer poly-{trans-[RuCl2(vpy)4]/sty (sty = styrene and vpy = 4-vinylpyridine). In a first step, the co-polymer was prepared by reaction of trans-[RuCl2(vpy)4] with styrene. Then, organically capped ZnO NCs and poly-{trans-[RuCl2(vpy)4]/sty} were mixed in CH2Cl2 to produce cast films of the nanocomposites after evaporation of the solvent (ex situ method). The properties of these materials were compared to those of nanocomposites obtained by in situ polymerization in the presence of ZnO NCs.

【 授权许可】

Unknown