Citation

BibTex format

@article{Wilkinson:2022:10.1039/d2sc00861k,
author = {Wilkinson, LA and Bennett, TLR and Grace, IM and Hamill, J and Wang, X and Au-Yong, S and Ismael, A and Jarvis, SP and Hou, S and Albrecht, T and Cohen, LF and Lambert, C and Robinson, BJ and Long, NJ},
doi = {10.1039/d2sc00861k},
journal = {Chemical Science},
pages = {8380--8387},
title = {Assembly, structure and thermoelectric properties of 1,1 '-dialkynylferrocene 'hinges'},
url = {http://dx.doi.org/10.1039/d2sc00861k},
volume = {13},
year = {2022}
}

RIS format (EndNote, RefMan)

TY  - JOUR
AB - Dialkynylferrocenes exhibit attractive electronic and rotational features that make them ideal candidates for use in molecular electronic applications. However previous works have primarily focussed on single-molecule studies, with limited opportunities to translate these features into devices. In this report, we utilise a variety of techniques to examine both the geometric and electronic structure of a range of 1,1′-dialkynylferrocene molecules, as either single-molecules, or as self-assembled monolayers. Previous single molecule studies have shown that similar molecules can adopt an ‘open’ conformation. However, in this work, DFT calculations, STM-BJ experiments and AFM imaging reveal that these molecules prefer to occupy a ‘hairpin’ conformation, where both alkynes point towards the metal surface. Interestingly we find that only one of the terminal anchor groups binds to the surface, though both the presence and nature of the second alkyne affect the thermoelectric properties of these systems. First, the secondary alkyne acts to affect the position of the frontier molecular orbitals, leading to increases in the Seebeck coefficient. Secondly, theoretical calculations suggested that rotating the secondary alkyne away from the surface acts to modulate thermoelectric properties. This work represents the first of its kind to examine the assembly of dialkynylferrocenes, providing valuable information about both their structure and electronic properties, as well as unveiling new ways in which both of these properties can be controlled.
AU - Wilkinson,LA
AU - Bennett,TLR
AU - Grace,IM
AU - Hamill,J
AU - Wang,X
AU - Au-Yong,S
AU - Ismael,A
AU - Jarvis,SP
AU - Hou,S
AU - Albrecht,T
AU - Cohen,LF
AU - Lambert,C
AU - Robinson,BJ
AU - Long,NJ
DO - 10.1039/d2sc00861k
EP - 8387
PY - 2022///
SN - 2041-6520
SP - 8380
TI - Assembly, structure and thermoelectric properties of 1,1 '-dialkynylferrocene 'hinges'
T2 - Chemical Science
UR - http://dx.doi.org/10.1039/d2sc00861k
UR - http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000820384600001&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=1ba7043ffcc86c417c072aa74d649202
UR - http://hdl.handle.net/10044/1/112182
VL - 13
ER -