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MM: Fachverband Metall- und Materialphysik
MM 28: Mechanical Properties and Alloy Design: e.g. Light-Weight, High-Temperature, Multicomponent Materials I
MM 28.2: Talk
Tuesday, March 19, 2024, 13:45–14:00, C 230
New properties from 1D materials derived from molecules under pressure — •Samuel Vasconcelos and Michael Rohlfing — Universität Münster
Low-dimensional materials has been thoroughly investigated in the recent past decades. We focused mainly in the 1D materials. The precursor of a class in particular, the so-called nanothreads was presented in 2016 by Fitzgibbons et. al, when benzene molecules under pressure were connected, changing their hybridization and remaining connected afterwards. Subsequently many other molecules were investigated in order to obtain the same behaviour. We present two works, in which new properties were obtained under the same phenomenology of transformation. First, nanothreads derived from the porphirin family presenting a metallic behaviour, not yet observed in this class of materials. After we present a new class of sp3 tubes derived from the kekulene family displaying a functional tubular character. Mechanical and electronic properties will be presented, and also the mechanisms behind such transformations are also exposed in these works.
Keywords: nanothreads; 1D materials; Diels-Alder transformations; porphirin; kekulene