75032 20210111082903.0 doi 10.3762/bjoc.14.180 sideral 107354 ART-2018-107354 eng (orcid)0000-0002-0769-7168 Alegre-Requena, J.V. Synthesis and supramolecular self-assembly of glutamic acid-based squaramides 2018 Access copy available to the general public Unrestricted We describe the preparation and characterization of two new unsymmetrical squaramide-based organogelators. The synthesis of the compounds was carried out by subsequent amine condensations starting from dimethyl squarate. The design of the gelators involved a squaramide core connected on one side to a long aliphatic chain and on the other side to a glutamic acid residue. The gelator bearing the free carboxylic groups showed a lower gelation capacity than its precursor diester derivative. Some selected gels were further studied by infrared spectroscopy, rheology and electron microscopy. Critical gelation concentrations and gel-to-sol transition temperatures were also determined for each case. In addition, the superior squaramide diester gelator was compared with an analogue triazole-based gelator in terms of critical gelation concentration, gelation kinetics and thermal phase transition. info:eu-repo/grantAgreement/ES/DGA/E07-17R info:eu-repo/grantAgreement/ES/MINECO/CTQ2017-88091-P info:eu-repo/semantics/openAccess by http://creativecommons.org/licenses/by/3.0/es/ 2.595 2018 CHEMISTRY, ORGANIC 20 / 57 = 0.351 2018 Q2 T2 0.821 2018 Organic Chemistry 2018 Q2 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Haring, M. Sonsona, I.G. Abramov, A. (orcid)0000-0001-6832-8983 Marques-Lopez, E. Universidad de Zaragoza (orcid)0000-0002-5244-9569 Pérez Herrera, R. Universidad de Zaragoza Diaz Diaz, D. 2013 765 Universidad de Zaragoza Dpto. Química Orgánica Área Química Orgánica 14 (2018), 2065-2073 Beilstein J. Org. Chem. BEILSTEIN JOURNAL OF ORGANIC CHEMISTRY 1860-5397 645247 http://zaguan.unizar.es/record/75032/files/texto_completo.pdf Versión publicada 71152 http://zaguan.unizar.es/record/75032/files/texto_completo.jpg?subformat=icon icon Versión publicada oai:zaguan.unizar.es:75032 articulos driver 2021-01-11-07:55:16 ARTICLE