Exploration of Interfacial Porphine Coupling Schemes and Hybrid Systems by Bond-Resolved Scanning Probe Microscopy.
Felix BischoffYuanqin HeAlexander RissKnud SeufertWilli AuwärterJohannes V BarthPublished in: Angewandte Chemie (International ed. in English) (2018)
The templated synthesis of porphyrin-based oligomers and heterosystems is of considerable interest for materials with tunable electronic gaps, photovoltaics, or sensing device elements. In this work, temperature-induced dehydrogenative coupling between unsubstituted free-base porphine units and their attachment to graphene nanoribbons on a well-defined Ag(111) support are scrutinized by bond-resolved scanning probe microscopy techniques. The detailed inspection of covalently fused porphine dimers obtained by in vacuo on-surface synthesis clearly reveals atomistic details of coupling motifs, whereby also putative reaction intermediates are identified. Moreover, the covalent attachment of porphines at preferred locations of atomically precise armchair-type graphene nanoribbons is demonstrated.
Keyphrases
- electron transfer
- room temperature
- high resolution
- quantum dots
- single molecule
- living cells
- ionic liquid
- electron microscopy
- molecular dynamics simulations
- high speed
- high throughput
- optical coherence tomography
- energy transfer
- photodynamic therapy
- high glucose
- carbon nanotubes
- diabetic rats
- fluorescent probe
- mass spectrometry
- drug induced
- transition metal
- single cell