Investigation of Co nanoparticle assemblies induced by magnetic field

Yan Li; Xiao Li Zhang; Ri Qiu; Ru Qiao; Young Soo Kang

Journal of Industrial and Engineering Chemistry, Vol.14, No.1, 22-27, January, 2008

DOI10.1016/j.jiec.2007.09.002 Export Citation

Investigation of Co nanoparticle assemblies induced by magnetic field

Yan Li, Xiao Li Zhang, Ri Qiu, Ru Qiao, and Young Soo Kang^†

Department of Chemistry, Pukyong National University, 599-1 Daeyon-3-Dong, Namgu, Busan 608-737, Korea

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Cobalt nanoparticles were synthesized by using cobalt (II) acetate as precursor in an organic solution. Under the influence of a 0.05 T magnetic field, in a colloidal solution, the cobalt nanoparticles covered with surfactants were assembled into highly constrained linear chains along the direction of the magnetic field. After removal of the field the chains become floppy and then aggregate into "pearl necklaces" coiled structures upon gentle agitation. The differences of the magnetic properties between the magnetic field induced and random cobalt nanoparticles can be characterized by superconducting quantum interference devise (SQUID). (c) 2007 The Korean Society of Industrial and Engineering Chemistry. Published by Elsevier B.V. All rights reserved.

Keywords:cobalt nanoparticles;magnetic field induced;pearl necklaces structures

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[Referenced By]

[1] Alivisatos AP, Science, 271(5251), 933 (1996)

[2] Leslie-Pelecky DL, Rieke RD, Chem. Mater., 8, 1770 (1996)

[3] Puntes VF, Krishnan KM, Alivisatos AP, Science, 291(5511), 2115 (2001)

[4] Smith TW, J. Phys. Chem., 84, 1621 (1980)

[5] Hahn H, Averback RS, J. Appl. Phycol., 67, 1113 (1990)

[6] Klabunde KJ, Zhang D, Glavee GN, Sorensen C, Chem. Mater., 6, 784 (1994)

[7] Suslick KS, Fang MM, Hyeon T, J. Am. Chem. Soc., 118(47), 11960 (1996)

[8] Bonnemann H, Brijoux W, Brinkmann R, Joussen T, Angew. Chem.-Int. Edit., 29, 273 (1990)

[9] Tsai KL, Dye JL, J. Am. Chem. Soc., 113, 1650 (1990)

[10] Bensebaa F, Zavaliche F, L'Ecuyer P, Cochrane RW, Veres T, J. Colloid Interface Sci., 277(1), 104 (2004)

[11] Dong XL, Choi CJ, Kim BK, Scripta Mater., 47, 857 (2002)

[12] Rabani E, Reichman DR, Geissler PL, Nature, 426, 271 (2003)

[13] Zeng H, Li J, Wang ZL, Liu JP, Sun S, Nature, 420, 395 (2002)

[14] Motte L, Billoudet F, Pileni MP, J. Phys. Chem., 99(44), 16425 (1995)

[15] Ohara PC, Heath JR, Gelbart WM, Angew. Chem.-Int. Edit., 36, 1077 (1997)

[16] Sun SH, Zeng H, J. Am. Chem. Soc., 124(28), 8204 (2002)

[17] Gu HW, Ho PL, Tsang KWT, Wang L, Xu B, J. Am. Chem. Soc., 125(51), 15702 (2003)

[18] Love JC, Urbach AR, Prentiss MG, Whitesides GM, J. Am. Chem. Soc., 125(42), 12696 (2003)

[19] Grzybowski BA, Stone HA, Whitesides GM, Nature, 405, 1033 (2000)

[20] Petit C, Russier V, Pileni MP, J. Phys. Chem. B, 107(38), 10333 (2003)

[21] Fievet F, Lagier JP, Figlarz M, MRS Bull., 14, 29 (1989)

[22] Sun S, Murray CB, Science, 287, 1989 (2000)

[23] Philipse AP, Maas D, Langmuir, 18(25), 9977 (2002)