Photocatalytic synthesis of silver nanoparticles using polysilane initiator
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This study shows that the exposure to visible light of the poly[diphenylsilane-co-methyl(H)silane] solution together with a silver salt, initiates a photocatalytic process which leads to the formation of metal nanoparticles. This phenomenon is a consequence of close-range interactions between the methylhydrosilyls’ σ-conjugated segments and the metal ions at the salt surface. Due to the weak charge transfer complexes thin films casted from solution show a specific morphology with microdomains of various dimensions and shapes in relation with the stage of the process. The polymethylhydrosilane copolymer stabilizes the synthesized nanoparticles in a similar manner as the conventional surfactants do. The polymer chemical structure is not affected during the photocatalytic process and the optical and electronic properties of polysilanes are well preserved.
KeywordsSilver nanoparticles Synthesis Polysilanes Nanocomposite Core–shell polymer
The authors thank to Romanian Ministry of Education—Matnantech project No. 36/2005 for supporting this study.
- Angelopoulos M (1998) Conducting polymers in microelectronics. In: Skotheim TA, Elsenbaumer RL, Reynolds JR (eds) Handbook of conducting polymers, 2nd edn. Marcel Dekker, New York, pp 921–944Google Scholar
- Oyamada H, Akiyama R, Hagio H, Naito T, Kobayashi S (2006) Polysilane-supported Pd and Pt nanoparticles as efficient catalysts for organic synthesis. Chem Commun 4297–4299. doi: 10.1039/b610241g
- Sanji T, Ogawa Y, Nakatsuka Y, Tanaka M, Sakurai H (2003) Metal nanoparticles derived from polysilane shell cross-linked micelle templates. Chem Lett 980–981. doi: 10.1246/cl.2003.980
- Schmid G, Simon U (2005) Gold nanoparticles: assembly and electrical properties in 1–3 dimensions. Chem Commun 697–710. doi: 10.1039/b411696h
- Zhou Y, Itoh H, Uemura T, Naka K, Chujo Y (2001) Preparation of π-conjugated polymer-protected gold nanoparticles in stable colloidal form. Chem Commun 613–614. doi: 10.1039/b100636n