Porphyrin nanotapes (Por NTs) are promising structures for their use as molecular wires thanks to a high degree of π-conjugation, low HOMO-LUMO gaps, and exceptional conductance. Such structures have been prepared in solution, but their on-surface synthesis remains unreported. Here, meso-meso triply fused Por NTs have been prepared through a two-step synthesis on Au(111). The diradical character of the on-surface formed building block PorA , a phenalenyl π-extended Zn Por, facilitates intermolecular homocoupling and allows for the formation of laterally π-extended tapes. The structural and electronic properties of individual Por NTs are addressed, both on Au(111) and on a thin insulating NaCl layer, by high-resolution scanning probe microscopy/spectroscopy complemented by DFT calculations. These Por NTs carry one unpaired electron at each end, which leads to magnetic end states. Our study provides a versatile route towards Por NTs and the atomic-scale characterization of such tapes.
Download full-text PDF |
Source |
|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC8361936 | PMC |
| http://dx.doi.org/10.1002/anie.202105350 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Population structure of the Salmonella enterica serotype Oranienburg reveals similar virulence, regardless of isolation years and sources.
Gene
January 2023
Investigadoras e Investigadores por México-Centro de Investigación en Alimentación y Desarrollo, A.C. (CIAD), Laboratorio Nacional Para la Investigación en Inocuidad Alimentaria (LANIIA), Carretera a El dorado km 5.5, Campo El Diez, 80110 Culiacán, Sinaloa, Mexico. Electronic address:
Salmonella enterica serotype Oranienburg is a multi-host, ubiquitous, and prevalent Non-typhoidal Salmonella (NTS) in subtropical rivers, particularly in sediments; little studied so far possible the adaptation and establishment of this microorganism based on its genetic content. This study was focused on the first five genomes of S. Oranienburg in sediments through whole-genome sequencing (WGS) and 61 river water genomes isolated in previous studies.
View Article and Find Full Text PDFBottom-up Fabrication and Atomic-Scale Characterization of Triply Linked, Laterally π-Extended Porphyrin Nanotapes*.
Angew Chem Int Ed Engl
July 2021
nanotech@surfaces Laboratory, Empa-Swiss Federal Laboratories for Materials Science and Technology, 8600, Dübendorf, Switzerland.
Porphyrin nanotapes (Por NTs) are promising structures for their use as molecular wires thanks to a high degree of π-conjugation, low HOMO-LUMO gaps, and exceptional conductance. Such structures have been prepared in solution, but their on-surface synthesis remains unreported. Here, meso-meso triply fused Por NTs have been prepared through a two-step synthesis on Au(111).
View Article and Find Full Text PDFTheoretical Study of Iron Porphyrin Nitrene: Formation Mechanism, Electronic Nature, and Intermolecular C-H Amination.
Inorg Chem
February 2020
School of Chemistry and Chemical Engineering , Shandong University, Jinan , Shandong 250100 , China.
The formation mechanism and electronic structures of iron porphyrin nitrene intermediates, as well as the nitrene-mediated intermolecular C-H amination, have been studied by performing DFT and ab initio complete active space self-consistent field (CASSCF) calculations. Compared with that of cobalt porphyrin nitrene and iron porphyrin carbene, the formation of iron porphyrin nitrene shows similar but different characteristics. The common feature is that all their formation is required to undergo the "far" or "close" complexes, but these complexes correspond to different energies relative to their respective reactants (isolated metalloporphyrins and azides), which is considered as one main reason to determine the reaction barriers.
View Article and Find Full Text PDF[Cervical mass caused by Salmonella Typhimurium as a clinical presentation of AIDS in a HIV-positive patient].
Rev Chilena Infectol
August 2011
Escuela de Medicina, Pontificia Universidad Católica de Chile.
Infections due to non-typhi salmonellae (NTS) generally cause a mild and self-limited gastrointestinal disease. However, there have been reports of atypical and severe presentations in immunocompromised patients. We report the case of a male patient who consulted with a cervical mass.
View Article and Find Full Text PDFImido transfer from bis(imido)ruthenium(VI) porphyrins to hydrocarbons: effect of imido substituents, C-H bond dissociation energies, and Ru(VI/V) reduction potentials.
J Am Chem Soc
November 2005
Department of Chemistry and Open Laboratory of Chemical Biology of the Institute of Molecular Technology for Drug Discovery and Synthesis, The University of Hong Kong, Pokfulam Road, Hong Kong.
[Ru(VI)(TMP)(NSO2R)2] (SO2R = Ms, Ts, Bs, Cs, Ns; R = p-C6H4OMe, p-C6H4Me, C6H5, p-C6H4Cl, p-C6H4NO2, respectively) and [Ru(VI)(Por)(NTs)2] (Por = 2,6-Cl2TPP, F20-TPP) were prepared by the reactions of [Ru(II)(Por)(CO)] with PhI=NSO2R in CH2Cl2. These complexes exhibit reversible Ru(VI/V) couple with E(1/2) = -0.41 to -0.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!