Issue 33, 2015

Thin film properties of tetracyanoquinodimethane (TCNQ) with novel templating effects

Abstract

The morphological and structural properties of films based on the strong electron acceptor molecule, 7,7,8,8,-tetracyanoquinodimethane (TCNQ) are presented and the influence of growth rate and the nature of the substrate are investigated. On weakly-interacting substrates, TCNQ films grown by Organic Molecular Beam Deposition (OMBD) exhibit randomly oriented micron-sized islands with significant curvature and three preferential orientations suggested by diffraction from (022), (021) and (020) planes. Pre-coating with 3,4,9,10-perylenetetracarboxylic dianhydride (PTCDA) is shown to result in morphological and structural modifications to the TCNQ films, characterized by uniform rectangular-shaped micron-sized islands, with the preferential molecular orientation reduced to only (020), compared to the films on bare substrates. We rationalise the interactions between TCNQ and PTCDA based on the match between the displacement of the perylene-H atoms/anhydride groups in PTCDA and that of the CN groups in TCNQ. These results suggest an alternative approach for using templating to control the molecular orientation in organic heterostructures.

Graphical abstract: Thin film properties of tetracyanoquinodimethane (TCNQ) with novel templating effects

Article information

Article type
Paper
Submitted
15 Мау. 2015
Accepted
22 Шіл. 2015
First published
05 Там. 2015

J. Mater. Chem. C, 2015,3, 8694-8699

Thin film properties of tetracyanoquinodimethane (TCNQ) with novel templating effects

H. Tseng, M. Serri, N. M. Harrison and S. Heutz, J. Mater. Chem. C, 2015, 3, 8694 DOI: 10.1039/C5TC01778E

To request permission to reproduce material from this article, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Read more about how to correctly acknowledge RSC content.

Social activity

Spotlight

Advertisements