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Issue 34, 2011
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Design and synthesis of photoactive ionic amorphous molecular materials

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Abstract

Compounds bearing electrostatic charges have unique properties including outstanding ionic-conductivity when compared with neutral ones. On the other hand, amorphous molecular materials harness the advantages of small molecules with high purity, defined structures and monodispersity, while still being easily processable into thin films and fibers. Here, we report a series of bis(pyridinium salt)s that combine these properties to form ionic amorphous molecular materials. Their design allowed them to vitrify efficiently upon slow cooling. They exhibited glass-transition temperatures in the range of 81–191 °C and had excellent thermal stabilities of up to 461 °C. Fibers were easily drawn from their melts that were visible to the naked eye. Although they were completely conjugated and had large molecular sizes, they were soluble in many common organic solvents. Additionally, they fluoresced blue and green light in both solution and solid states. They could be useful for high-performance applications in opto- and microelectronic fields, among others.

Graphical abstract: Design and synthesis of photoactive ionic amorphous molecular materials

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Supplementary files

Article information


Submitted
20 Apr 2011
Accepted
01 Jul 2011
First published
25 Jul 2011

J. Mater. Chem., 2011,21, 12717-12724
Article type
Paper

Design and synthesis of photoactive ionic amorphous molecular materials

A. K. Nedeltchev, H. Han and P. K. Bhowmik, J. Mater. Chem., 2011, 21, 12717
DOI: 10.1039/C1JM11735A

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