Monolayer assembly and striped architecture of Co nanoparticles on organic functionalized Si surfaces |
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| Authors: | S.-S. Bae D.K. Lim J.-I. Park J. Cheon I.C. Jeon S. Kim |
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| Affiliation: | (1) Department of Chemistry and School of Molecular Science (BK 21), Korea Advanced Institute of Science and Technology, Daejeon, 305-701, South Korea;(2) Department of Chemistry, College of Sciences, Yonsei University, Seoul, 120-749, South Korea;(3) Department of Chemistry, College of Natural Sciences, Chonbuk National University, Jeonju, Chonbuk, 561-756, South Korea |
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| Abstract: | We present a new strategy to fabricate a monolayer assembly of Br-terminated Co nanoparticles on functionalized Si surfaces by using chemical covalent bonding and microcontact printing method. Self-assembled monolayers (SAMs) of the Co nanoparticles formed on the hydroxyl-terminated Si surface exhibit two-dimensional island networks with locally ordered arrays via covalent linkage between nanoparticles and surface. On the other hand, SAMs of the nanoparticles on the aminopropyl-terminated Si surface show an individual and random distribution over an entire surface. Furthermore, we have fabricated striped architectures of Co nanoparticles using a combination of microcontact printing and covalent linkage. Microcontact printing of octadecyltrichlorosilane and selective covalent linkage between nanoparticles and functionalized Si surfaces lead to a hybrid nanostructure with selectively assembled nanoparticles stripes on the patterned functionalized Si surfaces. PACS 81.07.Ta; 61.46.+w; 81.16.Dn; 81.16.Be; 68.37.Hk; 82.80.Pv |
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