Interplay of Chemical and Electronic Structure on the Single-Molecule Level in 2D Polymerization
2016 (English)In: ACS NANO, ISSN 1936-0851, Vol. 10, no 12, 11511-11518 p.Article in journal (Refereed) Published
Single layers of covalently linked organic materials in the form of two-dimensional (2D) polymers constitute structures complementary to inorganic 2D materials. The electronic properties of 2D polymers may be manipulated through a deliberate choice of the organic precursors. Here we address the changes in electronic CO structure-from precursor molecule to oligomer by scanning tunneling spectroscopy and ultraviolet photoelectron spectroscopy. For this purpose, we introduce the polymerization reaction of 1,3,5-tris(4-carboxyphenyl)benzene via decarboxylation on Cu(111), which is thoroughly characterized by scanning tunneling microscopy, X-ray photoelectron spectroscopy, and density functional theory calculations. We present a comprehensive study of a contamination-free on-surface coupling scheme and study how dehydrogenation, decarboxylation, and polymerization affect the electronic structure on the molecular level.
Place, publisher, year, edition, pages
AMER CHEMICAL SOC , 2016. Vol. 10, no 12, 11511-11518 p.
covalent coupling; 2D polymer; electronic structure; STS; decarboxylation; porous polymer; HOMO/LUMO gap
IdentifiersURN: urn:nbn:se:liu:diva-134307DOI: 10.1021/acsnano.6b07314ISI: 000391079700099PubMedID: 28024333OAI: oai:DiVA.org:liu-134307DiVA: diva2:1071695