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Controlling the Size, Shape and Stability of Supramolecular Polymers in Water

Controlling the Size, Shape and Stability of Supramolecular Polymers in Water

Published on: August 2, 2012

Multicomponent supramolecular systems: self-organization in coordination-driven self-assembly.

Yao-Rong Zheng¹, Hai-Bo Yang, Koushik Ghosh

¹Department of Chemistry, University of Utah, 315 South 1400 East, RM, 2020, Salt Lake City, Utah, 84112, USA.

Chemistry (Weinheim an Der Bergstrasse, Germany)

|June 23, 2009

Summary

This study demonstrates the selective self-assembly of complex supramolecular structures from organoplatinum and pyridyl components. Geometric information and dynamic self-correction drive the formation of specific 2D and 3D molecules.

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Area of Science:

Supramolecular Chemistry
Materials Science
Chemical Crystallography

Background:

Multicomponent systems offer complex structures.
Self-organization is key to supramolecular assembly.
Controlling self-assembly into discrete architectures is challenging.

Purpose of the Study:

To investigate the self-organization of organoplatinum acceptors and pyridyl donors.
To explore the formation of specific 2D and 3D supramolecular structures.
To understand the role of geometric information and self-correction in assembly.

Main Methods:

Simultaneous mixing of organoplatinum acceptors and pyridyl donors.
Characterization using Nuclear Magnetic Resonance (NMR) spectroscopy.
Analysis via electrospray ionization mass spectrometry (ESI-MS).

Main Results:

Nine self-organizing systems (SS(1)-SS(9)) were studied.
Selective formation of 2D (rectangular, triangular, rhomboid) and 3D (triangular prism, trigonal bipyramidal) supramolecules observed.
Self-assembly directed by molecular geometry and thermodynamic self-correction.

Conclusions:

Discrete supramolecular structures self-assemble selectively from complex mixtures.
Geometric encoding within subunits and dynamic self-correction are crucial.
Temperature and solvent influence self-correction fidelity.