Adding Four Extra K-Regions to Hexa-peri-hexabenzocoronene

Overview

Journal J Am Chem Soc

Publisher American Chemical Society

Specialty Chemistry

Date 2016 Mar 24

PMID 27007058

Citations 10

Authors

Tim Dumslaff

Bo Yang

Ali Maghsoumi

Gangamallaiah Velpula

Kunal S Mali

Chiara Castiglioni

Steven De Feyter

Matteo Tommasini

Akimitsu Narita

Xinliang Feng

Klaus Mullen

Affiliations

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Abstract

A multistep synthesis of hexa-peri-hexabenzocoronene (HBC) with four additional K-regions was developed through a precursor based on two benzotetraphene units bridged with p-phenylene, featuring preinstalled zigzag moieties. Characterization by laser desorption/ionization time-of-flight mass spectrometry, Raman and IR spectroscopy, and scanning tunneling microscopy unambiguously validated the successful formation of this novel zigzag edge-rich HBC derivative. STM imaging of its monolayers revealed large-area, defect-free adlayers. The optical properties of the modified HBC were investigated by UV/visible absorption spectroscopy.

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