86444 20240614091131.0 doi 10.1016/j.dyepig.2018.12.066 sideral 110350 ART-2019-110350 eng Colom, E. Modification of the electronic properties of the p-spacer of chromophores linked to calix[4]arene platform for DSSCs applications 2019 Access copy available to the general public Unrestricted We have developed two novel dyes based on p-tert-butyl-calix[4]arene in order to evaluate their behavior as sensitizer in photovoltaic devices. These dyes consist in a difunctionalized calix[4]arene with triphenylamine (TPA)-donor, a heteroaromatic π-conjugated spacer, thiophene and benzothiadiazole-phenyl ring, respectively and cyanoacetic acid as acceptor group. The effect of the π-spacer has been studied by UV–vis spectroscopy and Differential Pulse Voltammetry and the models compounds have been theoretically investigated. The dye bearing phenylbenzothiadiazole results in a bathochromic shifted absorption and an adequate efficiency to transfer charge from D to A. The considerable increase of the photocurrent density results in a better efficiency of the devices prepared with these novel dyes with respect to the p-tert-butyl-calix[4]arene derivatives bearing TPA dye. In particular, p-tert-butyl-calix[4]arene derivative based on phenylbenzothiadiazole has reached an efficiency value of 5.84% which means an increase of 33% of the efficiency over those calix[4]arene derivatives with TPA dye. info:eu-repo/grantAgreement/ES/DGA/E14-17R info:eu-repo/grantAgreement/ES/MINECO/CTQ2014-52331-R info:eu-repo/semantics/openAccess by-nc-nd http://creativecommons.org/licenses/by-nc-nd/3.0/es/ 4.613 2019 CHEMISTRY, APPLIED 12 / 70 = 0.171 2019 Q1 T1 MATERIALS SCIENCE, TEXTILES 1 / 23 = 0.043 2019 Q1 T1 ENGINEERING, CHEMICAL 26 / 142 = 0.183 2019 Q1 T1 0.827 2019 Chemical Engineering (miscellaneous) 2019 Q1 Process Chemistry and Technology 2019 Q2 info:eu-repo/semantics/article info:eu-repo/semantics/acceptedVersion Andrés-Castán, J.M. Barrios, D. (orcid)0000-0003-1466-5719 Duerto, I. (orcid)0000-0001-9690-9662 Franco, S. Universidad de Zaragoza (orcid)0000-0001-9747-1789 Garín, J. Universidad de Zaragoza (orcid)0000-0001-8265-8970 Orduna, J. Universidad de Zaragoza (orcid)0000-0003-3514-2570 Villacampa, B. Universidad de Zaragoza (orcid)0000-0001-9814-0834 Blesa, M.J. Universidad de Zaragoza (orcid)0000-0001-7193-1732 2013 765 Universidad de Zaragoza Dpto. Química Orgánica Área Química Orgánica 2003 395 Universidad de Zaragoza Dpto. Física Materia Condensa. Área Física Materia Condensada 164 (2019), 43-53 Dyes pigm. Dyes and Pigments 0143-7208 915377 http://zaguan.unizar.es/record/86444/files/texto_completo.pdf Postprint 201573 http://zaguan.unizar.es/record/86444/files/texto_completo.jpg?subformat=icon icon Postprint oai:zaguan.unizar.es:86444 articulos driver 2024-06-14-09:07:18 ARTICLE