On-Surface Synthesis of Azobenzene-Linked Porphyrin Derivatives.

ABSTRACT: On-surface synthesis has become an attractive strategy to obtain functionalized carbon nanostructures from small precursor molecules using a bottom-up approach. Although various on-surface reactions have been developed, it is still unclear how the chirality of self-assembled structures prior to reaction affects the coupling process. Here, we investigate homocoupling of nitro-phenyl groups in Pt-porphyrin derivatives on Au(111) surfaces using low-temperature scanning tunneling microscopy. Two different self-assembled structures composed either of linear oligomer of molecules of opposing chirality or of discrete trimers of molecules having the same chirality (i.e., homochiral) were respectively obtained by using differently substituted phenyl and 3,5-di-tert-butylphenyl groups porphyr

SUBMITTER: Isshiki Y 

PROVIDER: S-EPMC12621240 | biostudies-literature | 2025 Nov

REPOSITORIES: biostudies-literature