Self-Assembled M24L48 Polyhedra and Their Sharp Structural Switch upon Subtle Ligand Variation

Scientific Paper

Expression Proteomics

10.1126/science.1188605

UHR-TOF

2010

maXis

Qing-Fu Sun,1 Junji Iwasa,1 Daichi Ogawa,1 Yoshitaka Ishido,1 Sota Sato,1 Tomoji Ozeki,2 Yoshihisa Sei,3 Kentaro Yamaguchi,3 Makoto Fujita1* 1Department of Applied Chemistry, School of Engineering, The University of Tokyo and Core Research for Evolutional Science and Technology (CREST), Japan Science and Technology Corporation (JST), 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan. 2Department of Chemistry and Materials Science, Tokyo Institute of Technology, 2-12-1 O-okayama, Meguro-ku, Tokyo 152-8551, Japan. 3Faculty of Pharmaceutical Sciences at Kagawa Campus, Tokushima Bunri University, 1314-1 Shido, Sanuki, Kagawa 769-2193, Japan.

Science 28 May 2010: Vol. 328. no. 5982, pp. 1144 - 1147

Abstract

Self-assembly is a powerful technique for the bottom-up construction of discrete, well-defined nanoscale structures. Large multicomponent systems (with more than 50 components) offer mechanistic insights into biological assembly but present daunting synthetic challenges. Here we report the self-assembly of giant M₂₄L₄₈ coordination spheres from 24 palladium ions (M) and 48 curved bridging ligands (L). The structure of this multicomponent system is highly sensitive to the geometry of the bent ligands. Even a slight change in the ligand bend angle critically switches the final structure observed across the entire ensemble of building blocks between M24L48 and M₁₂L₂₄ coordination spheres. The amplification of this small initial difference into an incommensurable difference in the resultant structures is a key mark of emergent behavior. 

link to article

Related Products

maXis 4G

Download