Spontaneous formation of large-area monolayers of well-ordered nanoparticles via a wet-coating process Article Received: 10 May 2004 Accepted: 14 August 2004 DOI:
10.1007/s11051-004-2163-8 Cite this article as: Hu, M., Chujo, S., Nishikawa, H. et al. J Nanopart Res (2004) 6: 479. doi:10.1007/s11051-004-2163-8 Abstract
Monolayers of well-ordered close-packed silica nanoparticles (NPs) with a diameter of 25 nm were spontaneously formed on silicon substrates over a large area and at a high rate via a wet-coating process using a capillary coater. The effects of zeta potential, dispersion solvent, and substrate friction on the NP self-assembly induced by the solvent evaporation were investigated. Experimental results showed that the solvent and the substrate had a larger impact on the order of formed monolayers than the zeta potential did, which are discussed from the viewpoint of the Derjaguin-Landau-Verwey-Overbeek (DLVO) and non-DLVO theories. Based on the above studies, we proposed a solution to fabrication of well-ordered NP monolayers without boundary defects at the surface coverage of ∼1 via the wet-coating process.
Keywords silica nanoparticles monolayer capillary coater self-assembly zeta potential DLVO forces non-DLVO forces colloids coatings References Adachi, E., Nagayama, K. 1996 Formation of holoferritin hexagonal arrays in secondary films due to Alder-Type transition Langmuir 12 1836 1839 Google Scholar Adler, J.J., Rabinovich, Y.I., Moudgil, B.M. 2001 Origins of the non-DLVO force between glass surfaces in aqueous solution J. Colloid Interface Sci. 237 249 258 Google Scholar Dimitrov, A.S., Nagayama, K. 1996 Continuous convective assembling of fine particles to two-dimensional arrays on solid surfaces Langmuir 12 1303 1311 Google Scholar Fujita, M., Nishikawa, H., Okubo, T., Yamaguchi, Y. 2004 A multiscale simulation on two-dimensional self-organization of nanoparticles in a liquid film Jpn. J. Appl. Phys. Part 1 43 4434 4442 Google Scholar Grasso, D., Subramaniam, K., Butkus, M., Strevett, K., Bergendahl, J. 2002 A review of non-DLVO interactions in environmental colloidal systems Rev. Environ. Sci. Bio/Technol. 1 17 38 Google Scholar Huang, S.J., Tsutsui, G., Sakaue, H., Shingubara, S., Takahagi, T. 2001 Experimental conditions for a highly ordered monolayer of gold nanoparticles fabricated by the Langmuir-Blodgett method J. Vac. Sci. Technol. B 16 2045 2049 Google Scholar Israelachvili, J. eds. 1992Intermolecular and Surface Forces2 Academic Press London Google Scholar Lin, X.M., Jaeger, H.M., Sorensen, C.M., Klabunde, K.J. 2001 Formation of long-range-ordered nanocrystal superlattices on silicon nitride substrates J. Phys. Chem. B 105 3353 3357 Google Scholar Liu , S., Zhu, T., Hu, R., Z., L. 2002 Evaporation-induced self-assembly of gold nanoparticles into a highly organized two-dimensional array Phys. Chem. Chem. Phys. 4 6059 6062 Google Scholar Maenosono, S., Okubo, T., Yamaguchi, Y. 2003 Overview of nanoparticle array formation by wet coating J Nanoparticle Res. 5 5 15 Google Scholar Nishikawa, H., Maenosono, S., Yamaguchi, Y., Okubo, T. 2003 Self-assembling process of colloidal particles into two-dimensional arrays induced by capillary immersion force A simulation study with discrete element method J Nanoparticle Res. 5 103 110 Google Scholar Okubo, T., Chujo, S., Maenosono, S., Yamaguchi, Y. 2003 Microstructure of silica particle monolayer films formed by capillary immersion force J Nanoparticle Res. 5 111 117 Google Scholar Perez , H., Lisboa de Sousa, R.M., Pradeau, J.-P., Albouy, P.-A. 2001 Elaboration and electrical characterization of Langmuir-Blodgett films of 4-mercaptoaniline functionalized platinum nanoparticles Chem. Mater. 13 1512 1517 Google Scholar Petsev, D.N., Vekilov, P.G. 2000 Evidence for non-DLVO hydration interactions in solutions of the protein apoferritin Phys. Rev. Lett. 84 1339 1342 Google Scholar Raghavan, S.R., Walls, H.J., Khan, S.A. 2000 Rheology of silica dispersions in organic liquids New evidence for solvation forces dictated by hydrogen bonding Langmuir 16 7920 7930 Google Scholar Schreiber, F. 2000 Structure and growth of self-assembling monolayers Prog. Surf. Sci. 65 151 257 Google Scholar Shipway, A.N., Katz, E., Willner, I. 2000 Nanoparticle arrays on surfaces for electronic, optical, and sensor applications Phys. Chem. Chem. Phys. 1 18 52 Google Scholar Teranishi, T., Hosoe, M., Tanaka, T., Miyake, M. 1999 Size control of monodispersed Pt nanoparticles and their 2D organization by electrophoretic deposition J. Phys. Chem. B 103 3818 3827 Google Scholar Thomas, P.J., Kulkarni, G.U., Rao, C.N.R. 2000 An investigation of two-dimensional arrays of thiolized Pd nanocrystals J. Phys. Chem. B 104 8138 8144 Google Scholar Tilley, R.D., Saito, S. 2003 Preparation of large scale monolayers of gold nanoparticles on modified silicon substrates using a controlled pulling method Langmuir 19 5115 5120 Google Scholar Vigil, G., Xu, Z., Steninberg, S., Israelachvili, J. 1994 Interactions of silica surfaces J. Colloid Interface Sci. 165 367 385 Google Scholar Yoon , R.-H., Vivek, S. 1998 Effects of short-chain alcohols and pyridine on the hydration forces between silica surfaces J. Colloid Interface Sci. 204 179 186 Google Scholar Zhao, S.Y., Lei, S.B., Chen, S.H., Ma, H.Y., Wang, S.Y. 2000 Assembly of two-dimensional ordered monolayers of nanoparticles by electrophoretic deposition Colloid Polym. Sci. 278 682 686 Google Scholar Copyright information
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