Issue 3, 2015

Increased carrier mobility in end-functionalized oligosilanes

Abstract

We show that a class of oligosilane–arene σ, π-hybrid materials exhibits distinct and enhanced solid-state electronic properties relative to its parent components. In the single crystal structure, the σ-conjugation axis of one molecule points towards the π-face of a neighboring molecule due to an unusual gauche conformation. This organization is hypothesized to be beneficial for charge transport. We show that solution-deposited crystalline films of the hybrid materials show up to a 100-fold increase in space-charge limited current (SCLC) mobility relative to literature reports of photoinduced hole transport in oligosilane films. The discovery that σ, π-hybrids are more than the sum of their parts offers a design opportunity for new materials.

Graphical abstract: Increased carrier mobility in end-functionalized oligosilanes

Supplementary files

Article information

Article type
Edge Article
Submitted
25 Oct 2014
Accepted
29 Dec 2014
First published
05 Jan 2015
This article is Open Access

All publication charges for this article have been paid for by the Royal Society of Chemistry
Creative Commons BY license

Chem. Sci., 2015,6, 1905-1909

Author version available

Increased carrier mobility in end-functionalized oligosilanes

S. Surampudi, M.-L. Yeh, M. A. Siegler, J. F. M. Hardigree, T. A. Kasl, H. E. Katz and R. S. Klausen, Chem. Sci., 2015, 6, 1905 DOI: 10.1039/C4SC03274H

This article is licensed under a Creative Commons Attribution 3.0 Unported Licence. You can use material from this article in other publications without requesting further permissions from the RSC, provided that the correct acknowledgement is given.

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