title: Vibrational characterization of dinaphthylpolyynes: a model system for the study of end-capped sp carbon chains.
abstract: We perform a systematic investigation of the resonance and vibrational properties of naphthyl-terminated sp carbon chains (dinaphthylpolyynes) by combined multi-wavelength resonant Raman (MWRR) spectroscopy, ultraviolet-visible spectroscopy, and Fourier-transform infrared (FT-IR) spectroscopy, plus ab initio density functional theory (DFT) calculations. We show that the MWWR and FT-IR spectroscopies are particularly suited to identify chains of different lengths and different terminations, respectively. By DFT calculations, we further extend those findings to sp carbon chains end-capped by other organic structures. The present analysis shows that combined MWRR and FT-IR provide a powerful tool to draw a complete picture of chemically stabilized sp carbon chains.
authors: CIMAINA, Università degli Studi di Milano, Via Celoria 16, I-20133 Milano, Italy.
authors: Eugenio
authors: E
authors: Cinquanta
authors: Luca
authors: L
authors: Ravagnan
authors: Ivano Eligio
authors: IE
authors: Castelli
authors: Franco
authors: F
authors: Cataldo
authors: Nicola
authors: N
authors: Manini
authors: Giovanni
authors: G
authors: Onida
authors: Paolo
authors: P
authors: Milani
mesh_terms: D002244:Carbon / Q000737:chemistry*; D009281:Naphthalenes / Q000737:chemistry*; D053279:Polyynes / Q000737:chemistry*; D011789:Quantum Theory; D014732:Vibration
chemical_list: D009281:Naphthalenes; D053279:Polyynes; D002244:Carbon