111635 20220322110621.0 doi 10.1016/j.dyepig.2020.108357 sideral 117146 ART-2020-117146 eng Tejeda-Orusco, V. 4H-pyranylidene-based small push-pull chromophores: Synthesis, structure, electronic properties and photovoltaic evaluation 2020 The synthesis and electrochemical and optical characterizations of four new 4H-pyranylidene-based push-pull molecules are reported herein as well as their evaluation as donor materials for organic photovoltaics. Studied systems exhibit good absorption properties and appropriate LUMO levels for a photoinduced electron transfer to C60. Bilayer organic solar cells fabricated from these new donors and C60 as the acceptor gave photocurrent however with low power conversion efficiencies. As shown by X-ray diffraction and theoretical calculations, titled molecules present a twisted structure which may prevent the formation of suitable p-p contacts between adjacent molecules hence explaining their low photovoltaic performance. Access copy available to the general public Unrestricted info:eu-repo/grantAgreement/ES/DGA/E14-17R info:eu-repo/grantAgreement/ES/MINECO/CTQ2014-52331-R info:eu-repo/grantAgreement/ES/UZ/UZ2019-CIE-01 info:eu-repo/semantics/openAccess by-nc-nd http://creativecommons.org/licenses/by-nc-nd/3.0/es/ 4.889 2020 CHEMISTRY, APPLIED 16 / 74 = 0.216 2020 Q1 T1 MATERIALS SCIENCE, TEXTILES 3 / 25 = 0.12 2020 Q1 T1 ENGINEERING, CHEMICAL 33 / 143 = 0.231 2020 Q1 T1 0.826 2020 Process Chemistry and Technology 2020 Q1 Chemical Engineering (miscellaneous) 2020 Q1 info:eu-repo/semantics/article info:eu-repo/semantics/acceptedVersion Blais, M. Cabanetos, C. Blanchard, P. Andreu, R. Universidad de Zaragoza (orcid)0000-0002-3206-9868 Franco, S. Universidad de Zaragoza (orcid)0000-0001-9747-1789 Orduna, J. Universidad de Zaragoza (orcid)0000-0003-3514-2570 Diosdado, B.E. 2013 765 Universidad de Zaragoza Dpto. Química Orgánica Área Química Orgánica 178 (2020), 108357 1-9 Dyes pigm. Dyes and Pigments 0143-7208 605770 http://zaguan.unizar.es/record/111635/files/texto_completo.pdf Postprint 1229821 http://zaguan.unizar.es/record/111635/files/texto_completo.jpg?subformat=icon icon Postprint oai:zaguan.unizar.es:111635 articulos driver 2022-03-22-09:59:12 ARTICLE