Excimerformation in a new class of terthiophene‐based fluorophores covalently bonded to a cyclotetrasiloxane scaffold has been demonstrated and the photophysical process ruling it has been investigated in detail and modeled theoretically. In contrast to the conventional systems in which long‐living fluorophores such as pyrene are linked in the same molecule, an excimer is formed only when two terthiophene‐based
A ‘donor-free’ chromophore with a silicon-based acceptor group for second order nonlinear optics
作者:A. Orbelli Biroli、F. Tessore、G. Di Carlo、S. Righetto、A. Forni、P. Fantucci、M. Pizzotti
DOI:10.1016/j.ica.2021.120745
日期:2022.4
In this paper we report an investigation on the linear and nonlinear properties of a non-classic push-pull molecule, based on the molecular design concept of a ‘donor-free’ chromophore. Herein a terthiophene unit acts both as a donor and a π-spacer group and a tris(trimethylsiloxy)silane substituent as an acceptor group. This latter can represent a model of a fragment of silica surface and it has been