Pregled bibliografske jedinice broj: 1177196
Gamma Radiation- and Ultraviolet-Induced Polymerization of Bis(amino acid)fumaramide Gel Assemblies
Gamma Radiation- and Ultraviolet-Induced Polymerization of Bis(amino acid)fumaramide Gel Assemblies // Polymers, 14 (2022), 1; 214, 17 doi:10.3390/polym14010214 (međunarodna recenzija, članak, znanstveni)
CROSBI ID: 1177196 Za ispravke kontaktirajte CROSBI podršku putem web obrasca
Naslov
Gamma Radiation- and Ultraviolet-Induced
Polymerization of Bis(amino acid)fumaramide Gel
Assemblies
Autori
Gregorić, Tomislav ; Makarević, Janja ; Štefanić, Zoran ; Žinić, Mladen ; Frkanec, Leo
Izvornik
Polymers (2073-4360) 14
(2022), 1;
214, 17
Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni
Ključne riječi
radiation-induced polymerization ; photoinduced polymerization ; self-assembly ; low-molecular-weight gelators (LMWG) ; topochemical polymerizations ; polymer-based gelators
Sažetak
Controlling the polymerization of supramolecular self-assembly through external stimuli holds great potential for the development of responsive soft materials and manipulation at the nanoscale. Vinyl esters of bis(leu or val)fumaramide (1a and 2a) have been found to be gelators of various organic solvents and were applied in this investigation of the influence of organogelators’ self-assembly on solid-state polymerization induced by gamma and ultraviolet irradiation. Here, we report our investigation into the influences of self- assemblies of bis(amino acid vinyl ester) fumaramides on gamma-ray- and ultraviolet-induced polymerization. The gelator molecules self- assembled by non-covalent interactions, mainly through hydrogen bonds between the amide group (CONH) and the carboxyl group (COO), thus forming a gel network. NMR and FTIR spectroscopy were used to investigate and characterize supramolecular gels. TEM and SEM microscopy were used to investigate the morphology of gels and polymers. Morphology studies showed that the gels contained a filamentous structure of nanometer dimensions that was exhaustive in a threedimensional network. The prepared derivatives contained reactive alkyl groups suitable for carrying out the polymerization reaction initiated by gamma or ultraviolet radiation in the supramolecular aggregates of selected gels. It was found that the polymerization reaction occurred only in the network of the gel and was dependent on the structure of aggregates or the proximity and orientation of double bonds in the gel network. Polymers were formed by the gels exposure to gamma and ultraviolet radiation in toluene, and water/DMF gels with transcripts of their gel structure into polymers. The polymeric material was able to immobilize various solvents by swelling. Furthermore, methyl esters of bis(leu and val)fumaramide (1b and 2b) were synthesized ; these compounds showed no gelling properties, and the crystal structure of the valine derivative 2b was determined.
Izvorni jezik
Engleski
Znanstvena područja
Kemija
POVEZANOST RADA
Projekti:
HRZZ-IP-2018-01-6910 - Sinteza supramolekulskih samo-udruženih nanostruktura za izgradnju naprednih funkcionalnih materijala (SUPeRNANO) (Frkanec, Leo, HRZZ - 2018-01) ( CroRIS)
IP-2013-11-7387 - Supramolekulska sinteza samo-organizirajućih funkcionalnih nanomaterijala i kompleksnih kemijskih sustava (SInFONIA) (Frkanec, Leo, HRZZ - 2013-11) ( CroRIS)
Ustanove:
Institut "Ruđer Bošković", Zagreb,
Hrvatska akademija znanosti i umjetnosti
Profili:
Tomislav Gregorić (autor)
Mladen Žinić (autor)
Leo Frkanec (autor)
Zoran Štefanić (autor)
Janja Makarević (autor)
Citiraj ovu publikaciju:
Časopis indeksira:
- Current Contents Connect (CCC)
- Web of Science Core Collection (WoSCC)
- Science Citation Index Expanded (SCI-EXP)
- SCI-EXP, SSCI i/ili A&HCI
- Scopus