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Surface-Assisted Sy...
Surface-Assisted Synthesis of N-Containing pi-Conjugated Polymers
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- Sanchez-Grande, Ana (författare)
- IMDEA Nanosci, Spain
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- Urgel, Jose I. (författare)
- IMDEA Nanosci, Spain
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- Garcia-Benito, Ines (författare)
- IMDEA Nanosci, Spain; Univ Complutense, Spain
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- Santos, Jose (författare)
- Univ Complutense, Spain
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- Biswas, Kalyan (författare)
- IMDEA Nanosci, Spain
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- Lauwaet, Koen (författare)
- IMDEA Nanosci, Spain
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- Gallego, Jose M. (författare)
- CSIC, Spain
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- Rosén, Johanna, 1975- (författare)
- Linköpings universitet,Materialdesign,Tekniska fakulteten
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- Miranda, Rodolfo (författare)
- IMDEA Nanosci, Spain; Univ Autonoma Madrid, Spain
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- Björk, Jonas, 1983- (författare)
- Linköpings universitet,Materialdesign,Tekniska fakulteten
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- Martin, Nazario (författare)
- IMDEA Nanosci, Spain; Univ Complutense, Spain
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- Ecija, David (författare)
- IMDEA Nanosci, Spain
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(creator_code:org_t)
- 2022-05-22
- 2022
- Engelska.
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Ingår i: Advanced Science. - : Wiley. - 2198-3844. ; 9:19
- Relaterad länk:
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https://liu.diva-por... (primary) (Raw object)
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- On-surface synthesis has recently emerged as a powerful strategy to design conjugated polymers previously precluded in conventional solution chemistry. Here, an N-containing pentacene-based precursor (tetraazapentacene) is ex-professo synthesized endowed with terminal dibromomethylene (:CBr2) groups to steer homocoupling via dehalogenation on metallic supports. Combined scanning probe microscopy investigations complemented by theoretical calculations reveal how the substrate selection drives different reaction mechanisms. On Ag(111) the dissociation of bromine atoms at room temperature triggers the homocoupling of tetraazapentacene units together with the binding of silver adatoms to the nitrogen atoms of the monomers giving rise to a N-containing conjugated coordination polymer (P1). Subsequently, P1 undergoes ladderization at 200 degrees C, affording a pyrrolopyrrole-bridged conjugated polymer (P2). On Au(111) the formation of the intermediate polymer P1 is not observed and, instead, after annealing at 100 degrees C, the conjugated ladder polymer P2 is obtained, revealing the crucial role of metal adatoms on Ag(111) as compared to Au(111). Finally, on Ag(100) the loss of :CBr2 groups affords the formation of tetraazapentacene monomers, which coexist with polymer P1. Our results contribute to introduce protocols for the synthesis of N-containing conjugated polymers, illustrating the selective role of the metallic support in the underlying reaction mechanisms.
Ämnesord
- TEKNIK OCH TEKNOLOGIER -- Kemiteknik -- Annan kemiteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Chemical Engineering -- Other Chemical Engineering (hsv//eng)
Nyckelord
- conjugated polymers; N-heteroacenes; scanning probe microscopies; on-surface synthesis
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- art (ämneskategori)
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Till lärosätets databas
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Sanchez-Grande, ...
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Urgel, Jose I.
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Garcia-Benito, I ...
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Santos, Jose
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Biswas, Kalyan
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Lauwaet, Koen
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visa fler...
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Gallego, Jose M.
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Rosén, Johanna, ...
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Miranda, Rodolfo
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Björk, Jonas, 19 ...
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Martin, Nazario
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Ecija, David
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visa färre...
- Om ämnet
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- TEKNIK OCH TEKNOLOGIER
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TEKNIK OCH TEKNO ...
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och Kemiteknik
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och Annan kemiteknik
- Artiklar i publikationen
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Advanced Science
- Av lärosätet
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Linköpings universitet