On-Surface
Synthesis of Oligo(indenoindene)
Posted on 2020-07-20 - 16:05
Fully
conjugated ladder polymers (CLP) possess unique optical and
electronic properties and are considered promising materials for applications
in (opto)electronic devices. Poly(indenoindene) is a CLP consisting
of an alternating array of five- and six-membered rings, which has
remained elusive so far. Here, we report an on-surface synthesis of
oligo(indenoindene) on Au(111). Its structure and a low electronic
band gap have been elucidated by low-temperature scanning tunneling
microscopy and spectroscopy and noncontact atomic force microscopy,
complemented by density functional theory calculations. Achieving
defect-free segments of oligo(indenoindene) offers exclusive insight
into this CLP and provides the basis to further synthetic approaches.
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Di Giovannantonio, Marco; Chen, Qiang; Urgel, José I.; Ruffieux, Pascal; Pignedoli, Carlo A.; Müllen, Klaus; et al. (2020). On-Surface
Synthesis of Oligo(indenoindene). ACS Publications. Collection. https://doi.org/10.1021/jacs.0c05701
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AUTHORS (8)
MD
Marco Di Giovannantonio
QC
Qiang Chen
JU
José I. Urgel
PR
Pascal Ruffieux
CP
Carlo A. Pignedoli
KM
Klaus Müllen
AN
Akimitsu Narita
RF
Roman Fasel