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Polymorphism and Phonon Dynamics of α‐Quaterthiophene |
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| Authors: | Paolo Ranzieri Dr Alberto Girlando Prof Silvia Tavazzi Prof Marcello Campione Prof Luisa Raimondo Dr Ivano Bilotti Dr Aldo Brillante Prof Raffaele G Della Valle Prof Elisabetta Venuti Prof |
| Institution: | 1. Dip. Chimica G.I.A.F. and INSTM‐UdR Parma, Università di Parma, 43100 Parma (Italy), Fax: (+39)?0521‐905556;2. Dip. Scienza dei Materiali, Università di Milano‐Bicocca, 20125 Milano (Italy);3. Dip. Chimica Fisica e Inorganica and INSTM‐UdR Bologna, Università di Bologna, 40136 Bologna (Italy) |
| Abstract: | Two 4T: Low‐frequency micro‐Raman spectroscopy coupled with lattice dynamics calculations is an invaluable tool for investigating polymorphism in organic semiconductors. The Raman spectra of the low‐temperature (LT) and high‐temperature (HT) polymorphs of α‐quaterthiophene (4T) are presented and interpreted (see picture). Raman mapping is applied to investigate the phase purity.  |
| Keywords: | molecular dynamics polymorphism Raman spectroscopy statistical thermodynamics thiophenes |