tailieunhanh - Báo cáo hóa học: " Intermatrix synthesis: easy technique permitting preparation of polymer-stabilized nanoparticles with desired composition and structure"

Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành hóa học dành cho các bạn yêu hóa học tham khảo đề tài: Intermatrix synthesis: easy technique permitting preparation of polymer-stabilized nanoparticles with desired composition and structure | Ruiz et al. Nanoscale Research Letters 2011 6 343 http content 6 1 343 o Nanoscale Research Letters a SpringerOpen Journal NANO EXPRESS Open Access Intermatrix synthesis easy technique permitting preparation of polymer-stabilized nanoparticles with desired composition and structure 1 2 1 1 Patricia Ruiz Jorge Macanás María Munoz and Dmitri N Muraviev Abstract The synthesis of polymer-stabilized nanoparticles PSNPs can be successfully carried out using intermatrix synthesis IMS technique which consists in sequential loading of the functional groups of a polymer with the desired metal ions followed by nanoparticles NPs formation stage. After each metal-loading-NPs-formation cycle the functional groups of the polymer appear to be regenerated. This allows for repeating the cycles to increase the NPs content or to obtain NPs with different structures and compositions . core-shell or core-sandwich . This article reports the results on the further development of the IMS technique. The formation of NPs has been shown to proceed by not only the metal reduction reaction . Cu0-NPs but also by the precipitation reaction resulting in the IMS of PSNPs of metal salts . CuS-NPs . Introduction The development of preparative methods for the synthesis of inorganic nanoparticles INPs with desired composition structure and properties remains to be one of the hottest topics in the Nanoscience and Nanotechnology fields. Due to their nanometric dimension both the physical and the chemical properties of INPs substantially differ from those of the respective bulk materials what can be successfully used to improve the desired characteristics of INP-containing materials 1 2 . Stabilization of INPs in various polymeric matrices allows for preventing INPs aggregation and also for controlling their size and growth rate 3 . Moreover the resulting nanocomposites combine the properties of both NPs and polymer matrix allowing for instance the dispersion or .