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    Giant Micelles of Organoplatinum(II) Gemini Amphiphiles

    Year: 2008

    Journal: Langmuir, 2008, 24 (10), pp 5400–5410, 20111221

    Authors: Umamageswaran Maran, Hiram Conley, Markus Frank, Atta M. Arif, Anita M. Orendt, David Britt, Vladimir Hlady, Robert Davis and Peter J. Stang

    Organizations: Department of Chemistry, University of Utah, 315 South 1400 East, room 2020, Salt Lake City, Utah 84112, Department of Physics and Astronomy, Brigham Young University, Provo, Utah 84602, Center for High Performance Computing, University of Utah, Salt Lake City, Utah 84112, Department of Biological Engineering, Utah State University, Logan, Utah 84322, and Department of Bioengineering, University of Utah, Salt Lake City, Utah 84112

    Organoplatinum(II) gemini amphiphiles with two different chain lengths are synthesized and characterized. Self-assembly at the air–water interface is investigated as a function of chain length and reduction in surface area by using Langmuir-trough techniques. The Langmuir-trough experiments lead to a conjecture that surface aggregates may be the adsorbing units. Atomic force microscopy on the transferred Langmuir−Schaefer films reveals spontaneous formation of wormlike micellar aggregates. A shear-induced transition and alignment are proposed for the observed effects.