Pillared honeycomb nanoarchitectures formed on solid surfaces by the self-assembly of lipid-packaged one-dimensional Pt complexes

Proceedings of the National Academy of Sciences of the United States of America
Lee Chang-Soo, N Kimizuka

Abstract

A highly lipophilic polyion complex [Pt(en)(2)][PtCl(2)(en)(2)](1)(4) (en, 1,2-diaminoethane) is prepared from one-dimensional mixed valence Pt(II)/Pt(IV) complex and newly designed chiral amphiphile 1. The powdery sample showed purple color, which is a result of the mixed valence absorption of the linear chlorobridged complex (Pt(II)-Cl-Pt(IV)-Cl-)(n). When the lipid complex is dispersed in dichloromethane, purple-colored dispersion is obtained at 0 degrees C, whereas the color disappears after heating the solution to 21 degrees C. The observed thermochromism is reversible with respect to the temperature changes and is ascribed to the reversible dissociation and reassembly of the self-assembling inorganic wires. Casting of the 0 degrees C-purple dispersion on solid substrates affords honeycomb nanostructures in addition to the nanowires with the width of about 20 nm. The honeycomb patterns seem to be templated by the condensed water droplets that are formed and aligned on the rapidly evaporating dichloromethane solution. On the other hand, more regular honeycomb structures are exclusively obtained by casting the 21 degrees C-colorless solution. These observations indicate that the ordered honeycomb structures are obtainable on...Continue Reading

References

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Citations

Apr 4, 2006·Chemical Communications : Chem Comm·Louis MoreauPhilippe Barthélémy
Jul 21, 2016·Langmuir : the ACS Journal of Surfaces and Colloids·Naotoshi Nakashima, Tomohiro Shiraki
Sep 30, 2016·Langmuir : the ACS Journal of Surfaces and Colloids·Jing LiuNobuo Kimizuka
Sep 30, 2004·Chirality·Weihong LiuMark M Green
Jul 7, 2019·International Journal of Molecular Sciences·Miho HatakedaKeita Kuroiwa
Nov 28, 2013·Chemical Communications : Chem Comm·Takao Noguchi, Nobuo Kimizuka
Aug 15, 2009·Langmuir : the ACS Journal of Surfaces and Colloids·Hang SunLixin Wu
Jun 19, 2010·Langmuir : the ACS Journal of Surfaces and Colloids·Kenichi KonOlaf Karthaus
Jun 26, 2003·Journal of the American Chemical Society·Takashi Uemura, Susumu Kitagawa

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