Issue 27, 2013
From the journal:

RSC Advances

Adsorption of TCNQH-functionalized quinonoid zwitterions on gold and graphene: evidence for dominant intermolecular interactions†

Lingmei Kong,a   Lucie Routaboul,b   Pierre Braunstein,b   Hong-Gi Park,c   Jaewu Choi,c   John P. Colón Córdova,ad   E. Vega,ad   Luis G. Rosa,d   Bernard Doudine  and  Peter A. Dowben*a  

* Corresponding authors

a Dept. of Physics and Astronomy and the Nebraska Center for Materials and Nanoscience, Univ. of Nebraska-Lincoln, Nebraska 68588-0299, USA
E-mail: pdowben@unl.edu

b Laboratoire de Chimie de Coordination, Institut de Chimie (UMR 7177 CNRS), Université de Strasbourg, 4 rue Blaise Pascal, 67081 Strasbourg, France

c Dept. of Information Display, Kyung Hee University, 1 Hoegi-dong, Dondaemoon-gu, Seoul 130-701, Korea

d Dept. of Physics and Electronics, University of Puerto Rico-Humacao, 100 Road 908 CUH Station, Humacao, PR, USA

e Institut de Physique et Chimie des Matériaux de Strasbourg, IPCMS (UMR 7504), and Laboratory of Nanostructures in Interactions with their Environment (NIE), Université de Strasbourg, 23 rue du Lœss, B. P. 43, 67034 Strasbourg, France

Abstract

We experimentally investigate the electronic structure of the strongly dipolar, quinonoid-type molecule obtained by TCNQH-functionalization (TCNQH = (NC)2CC6H4CH(CN)2) of (6Z)-4-(butylamino)-6-(butyliminio)-3-oxocyclohexa-1,4-dien-1-olate C6H2([partial double bond, top dashed]NHR)2([partial double bond, top dashed]O)2 (where R = n-C4H9) to be very similar after deposition from solution on either graphene or gold substrates. These zwitterion adsorbate thin films form structures that are distinct from those formed by related quinonoid molecules previously studied. We argue that adsorbate–adsorbate interactions dominate and lead to a Stranski–Krastanov ‘island growth’ mechanism.

Graphical abstract: Adsorption of TCNQH-functionalized quinonoid zwitterions on gold and graphene: evidence for dominant intermolecular interactions

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Article information

DOI
https://doi.org/10.1039/C3RA40930A
Article type
Paper
Submitted
22 Feb 2013
Accepted
02 May 2013
First published
03 May 2013

RSC Adv., 2013,3, 10956-10961

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Adsorption of TCNQH-functionalized quinonoid zwitterions on gold and graphene: evidence for dominant intermolecular interactions

L. Kong, L. Routaboul, P. Braunstein, H. Park, J. Choi, J. P. C. Córdova, E. Vega, L. G. Rosa, B. Doudin and P. A. Dowben, RSC Adv., 2013, 3, 10956 DOI: 10.1039/C3RA40930A

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