Supramolecular polymers of bis-ureia in solution: balance of solute-solvent interaction

• Grant number: 14/04515-8
• Support Opportunities: Scholarships in Brazil - Doctorate
• Start date: October 01, 2014
• End date: June 13, 2017
• Field of knowledge: Physical Sciences and Mathematics - Chemistry - Physical-Chemistry
• Agreement: Coordination of Improvement of Higher Education Personnel (CAPES)
• Principal Investigator: Edvaldo Sabadini
• Grantee: Bruno Giordano Alvarenga
• Host Institution: Instituto de Química (IQ). Universidade Estadual de Campinas (UNICAMP). Campinas , SP, Brazil
• Associated scholarship(s): 15/02536-0 - Synthesis and physico-chemical studies of supramolecular polymers based hydrogen bonds, BE.EP.DR

Abstract

Supramolecular polymers are chains of small molecules held together through reversible noncovalent interactions. The reversibility of the bonds provides to these systems new properties compared with conventional polymers (in which the units are covalently bound), in particular the ability to self-healing. The understanding of these self-assembly systems and their potential applications have driven the development of the theme. In this context, a leading researcher, Professor Bouteiller at the "Université Pierre et Marie Curie", have developed a new type of supramolecular polymer in which the main driving force for self-assembly involves the union of derivatives of aromatic ureas (bis-ureas). In this case, the supramolecular polymers may have different morphologies, fibers capable of generating viscous solutions and tubes that produce gels with viscoelastic behavior. The gels formed by bis-ureas are distinguished by one of the few known systems that are not formed by interlacing crystal fibers. The discovery of Professor Laurent is relatively recent and therefore there is no sufficient knowledge related to self-association of bis-ureas in different solvents. Thus, this project's main focus, macroscopic and microscopic investigations on the formation of these polymers in different ways. For studies rheological techniques, calorimetry, infrared spectroscopy and neutron scattering (SANS) will be applied. (AU)

Scientific publications

(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)

ALVARENGA, BRUNO GIORDANO; BERNARDINO, KALIL; DE MOURA, ANDRE FARIAS; SABADINI, EDVALDO. Two different pathways for assembling bis-urea in benzene and toluene. Journal of Molecular Modeling, v. 24, n. 7, JUL 2018. (14/04515-8, 13/07296-2, 12/15147-4)

DESMARCHELIER, ALARIC; ALVARENGA, BRUNO GIORDANO; CAUMES, XAVIER; DUBREUCQ, LUDOVIC; TROUFFLARD, CLAIRE; TESSIER, MARTINE; VANTHUYNE, NICOLAS; IDE, JULIEN; MAISTRIAUX, THOMAS; BELJONNE, DAVID; et al. Tuning the nature and stability of self-assemblies formed by ester benzene 1,3,5-tricarboxamides: the crucial role played by the substituents. SOFT MATTER, v. 12, n. 37, p. 7824-7838, 2016. (14/04515-8)

LI, YAN; DUBREUCQ, LUDOVIC; ALVARENGA, BRUNO G.; RAYNAL, MATTHIEU; BOUTEILLER, LAURENT. N-Substituted Benzene-1-Urea-3,5-Biscarboxamide (BUBA): Easily Accessible C-2-Symmetric Monomers for the Construction of Reversible and Chirally Amplified Helical Assemblies. CHEMISTRY-A EUROPEAN JOURNAL, v. 25, n. 45, JULY 2019. (14/04515-8)

Academic Publications

(References retrieved automatically from State of São Paulo Research Institutions)

ALVARENGA, Bruno Giordano. Physicochemical study of hydrogen bonded supramolecular polymers. 2017. Doctoral Thesis - Universidade Estadual de Campinas (UNICAMP). Instituto de Química Campinas, SP.