61550 20200221144300.0 doi 10.1039/C6RA13604D sideral 98871 ART-2016-98871 eng (orcid)0000-0002-8932-9085 Concellón, Alberto Universidad de Zaragoza Supramolecular liquid crystalline dendrimers with a porphyrin core and functional carboxylic acid dendrons 2016 Access copy available to the general public Unrestricted Novel liquid crystalline porphyrin dendrimers derived from 5,10,15,20-tetra-(4-pyridyl)porphyrins (TPyP) and their Zn complexes (ZnTPyP) have been synthesized by hydrogen bonding between the porphyrin core and four peripheral carboxylic acid dendrons derived from bis(hydroxymethyl)propionic acid (bis-MPA) to obtain 4 : 1 complexes. One family is derived from symmetric dendrons (G = 1 and 2) bearing promesogenic units in the terminal positions and two other families are derived from asymmetric dendrons (G = 1) that combine the promesogenic unit and an active moiety derived from coumarin or pyrene units. The formation of the complexes was confirmed by IR and NMR spectroscopy. The liquid crystalline properties were investigated by differential scanning calorimetry, polarizing optical microscopy and X-ray diffraction. Only porphyrin dendrimers (free base and Zn complexes) derived from symmetric dendrons exhibited a SmC mesophase. Porphyrin dendrimers derived from asymmetric dendrons did not show liquid crystalline behaviour. The UV-vis absorption and emission properties of the porphyrin dendrimers containing coumarin or pyrene have been investigated. info:eu-repo/grantAgreement/ES/DGA/E04 info:eu-repo/grantAgreement/ES/MINECO/CTQ2015-70174-P info:eu-repo/semantics/openAccess by-nc http://creativecommons.org/licenses/by-nc/3.0/es/ 3.108 2016 CHEMISTRY, MULTIDISCIPLINARY 59 / 166 = 0.355 2016 Q2 T2 0.889 2016 Chemistry (miscellaneous) 2016 Q1 Chemical Engineering (miscellaneous) 2016 Q1 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Bucos, Madalina (orcid)0000-0001-9866-6633 Serrano, José Luis Universidad de Zaragoza (orcid)0000-0003-1378-0571 Romero, Pilar Universidad de Zaragoza (orcid)0000-0001-7056-3181 Marcos, Mercedes Universidad de Zaragoza 2013 765 Universidad de Zaragoza Dpto. Química Orgánica Área Química Orgánica 6 (2016), 65179-65185 RSC ADVANCES RSC Advances 2046-2069 1124003 http://zaguan.unizar.es/record/61550/files/texto_completo.pdf Versión publicada 116457 http://zaguan.unizar.es/record/61550/files/texto_completo.jpg?subformat=icon icon Versión publicada oai:zaguan.unizar.es:61550 articulos driver 2020-02-21-13:32:17 ARTICLE