http://www.cnr.it/ontology/cnr/individuo/prodotto/ID264918
PHOTOEXCITATIONS IN CONJUGATED COPOLYMERS (Articolo in rivista)
- Type
- Label
- PHOTOEXCITATIONS IN CONJUGATED COPOLYMERS (Articolo in rivista) (literal)
- Anno
- 1994-01-01T00:00:00+01:00 (literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
- 10.1080/10587259408039279 (literal)
- Alternative label
Chiara Botta, Laura Rossi, Silvia Destri & Riccardo Tubino (1994)
PHOTOEXCITATIONS IN CONJUGATED COPOLYMERS
in Molecular crystals and liquid crystals science and technology. Section A, Molecular crystals and liquid crystals; Gordon and Breach,, Philadelphia (Stati Uniti d'America)
(literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
- Chiara Botta, Laura Rossi, Silvia Destri & Riccardo Tubino (literal)
- Pagina inizio
- Pagina fine
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- http://www.sciencedirect.com/science/article/pii/S0379677997807217 (literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
- Rivista
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- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroFascicolo
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
- Chiara Botta, Silvia Destri - Istituto di Chimica delle Macromolecole, CNR , Via Bassini 15, 20133, Milano, Italy
Laura Rossi- Dipartimento di Fisica \"A. Volta\" , Università di Pavia , Via Bassi 6, 27100, Pavia, Italy
Riccardo Tubino- Istituto di Matematica e Fisica, Università di Sassari , Via Vienna 2, 07100, Sassari, Italy (literal)
- Titolo
- PHOTOEXCITATIONS IN CONJUGATED COPOLYMERS (literal)
- Abstract
- We report in this short paper a preliminary account on the optical characterization and photoexcitation of a class of novel conjugated polymers consisting of regularly alternating thiophene and benzene sequences, which might represent models for one-dimensional superlattices. Optical absorption and emission spectra suggest that the barriers produced by the phenylene moieties do not interrupt the conjugation but can produce localization effects. Resonant Raman spectra indicate that a selective response of the thiophene and phenylene moieties occurs by varying the excitation energy from visible to ultraviolet. Moreover these measurements confirm the presence of a confinement on the thiophene blocks, while the biphenyl moiety does not appear to feel the energy barrier and behaves as a poly(paraphenylene) oligomer of 5-6 ring length. CW photomodulation spectra show that the formation of long-lived bipolarons takes place only if the thienylenic moiety is long enough to accomodate the lattice distortion. (literal)
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