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Three manuscripts just accepted for publication

Three manuscripts have been accepted for publication in the last week. All three papers report about collaborative work with experimental and theoretical groups around the world.

In the first paper we applied our ESD-STM technique to the analysis of a new type of conjugated polymer (TBIDT-BT) made by the McCulloch group at KAUST, whose physical properties were measured by the Sirringhaus group in Cambridge. Our contribution allowed to determine that the slightly reduced device performance of TBIDT-BT, when compared with the related superstar polymer IDT-BT, is most probably due to the formation of nanovoids in the polymer assembly. The paper is due to appear in the Journal of the American Chemical Society.

The second paper is a new chapter in the long-standing collaboration with Professor Woodruff in Physics at Warwick and investigates the structural phases formed by 7,7,8,8-tetracyanoquinodimethane (TCNQ) on the Ag(111) surface. Besides reporting a combination of STM and near incident x-ray standing wave (NIXSW) measurements, in this paper we applied also low energy electron microscopy (LEEM) to the study of this system, by cooperating with the group of Christian Kumpf at the Forschungszentrum Juelich. The paper will appear in Physical Review Materials.

The last paper originates from the work conducted by Professor Takayuki Suzuki from Fukuoka University during his sabbatical year in Warwick and investigate the interaction of TCNQ with the Si(111)-√7×√3-In surface superconductor. We demonstrate that TCNQ forms 2D metal organic network with In atoms form the substrate and that this is accompanied by a structural phase transition from the √7×√3 to a previously unknown 5 × 5 reconstruction. In order to rationalise the experimental finding, we partnered with the group of Peter Kratzer from the University of Duisburg-Essen whose DFT calculations indicate that the phase transition is driven by the surface reduction of In coverage. The paper will appear in Nanoscale.

Fri 25 Oct 2019, 12:13