Ultrafast spectroscopy of linear carbon chains: the case of dinaphthylpolyynes

D. Fazzi; F. Scotognella; A. Milani; D. Brida; E. Cinquanta; L. Ravagnan; P. Milani; F. Cataldo; M. Negro; S. Stagira; C. Vozzi

doi:10.1051/epjconf/20134105026

All issues

Volume 41 (2013)

EPJ Web of Conferences, 41 (2013) 05026

Abstract

Open Access

Issue		EPJ Web of Conferences Volume 41, 2013 XVIIIth International Conference on Ultrafast Phenomena


Article Number		05026
Number of page(s)		3
Section		Chemistry – Condensed Phase
DOI		https://doi.org/10.1051/epjconf/20134105026
Published online		13 March 2013

EPJ Web of Conferences 41, 05026 (2013)
https://doi.org/10.1051/epjconf/20134105026

Ultrafast spectroscopy of linear carbon chains: the case of dinaphthylpolyynes

D. Fazzi¹, F. Scotognella², A. Milani³, D. Brida², E. Cinquanta⁴, L. Ravagnan⁴, P. Milani⁴, F. Cataldo⁵, M. Negro², S. Stagira² and C. Vozzi²^a

¹ Center for Nano Science and Technology CNST@Polimi, Istituto Italiano di Tecnologia, via Pascoli 70/3, 20133 Milano, Italy
² CNR-IFN and Dipartimento di Fisica, Politecnico di Milano, Piazza L. da Vinci 32, 20133 Milano, Italy
³ Dipartimento di Chimica, Materiali e Ing. Chimica “G. Natta”, Politecnico di Milano, Piazza L. da Vinci 32, 20133 Milano, Italy
⁴ CIMAINA and Dipartimento di Fisica, Universita` di Milano, via Celoria 16, 20133 Milano, Italy
⁵ Actinium Chemical Research s.r.l., Via Casilina 1626/A, 00133 Roma, Italy

^a e-mail: caterina.vozzi@polimi.it

Abstract

The dynamics of excited streets in a special class of linear carbon chains, e.g. dinaphthyl polyynes, has been investigated by ultrafast transient absorption spectroscopy and DFT//TDDFT calculations. The ultrafast formation of a narrow photo-induced absorption band has been observed and assigned to an inter-system crossing event bringing to the formation of triplet excited streets.

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