Donor-substituted cyanoethynylethenes: powerful chromophores for opto-electronic applicationsElectronic supplementary information (ESI) available: Crystal packing of 5, UV/Vis spectra of donor-acceptor-substituted TEEs in comparison to those of CEEs, full electrochemical data for the donor-substituted CEEs and structure of the AF-50 standard for two-photon absorption. See http://www.rsc.org/suppdata/ob/b3/b303879c/

Abstract

Donor-substituted cyanoethynylethenes (CEEs) were synthesised, structurally characterised and investigated for their electronic and two-photon absorption properties, revealing exceptionally strong intramolecular charge-transfer interactions.