Sfoglia Chimica per Soggetto "CHIM/03 CHIMICA GENERALE E INORGANICA"
Items 1-20 di 22
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Biodegradable and functional aliphatic co-polyesters
(Universita degli studi di Salerno, 2016-03-15)Over the past decades, aliphatic polyesters have found rapidly increasing interest. Linear aliphatic polyesters, such as poly(glycolide) (PGA), poly(lactide) (PLA), poly(ε−caprolactone) (PCL) and their copolymers have found ... -
Carbon-based nanomaterials
(Universita degli studi di Salerno, 2017-02-27)New layered carbon-based materials were prepared and exhaustively characterized exploiting different characterization techniques, such as thermogravimetry (TGA), differential thermal calorimetry (DSC), Fourier transform ... -
CO2 fixation in cyclic carbonates and polycarbonates by salen-like based metal complexes
(Universita degli studi di Salerno, 2019-02-06)At the current rate of consumption of petroleum resources, they are predicted to be exhausted within the next century. For this reason, the development of new chemical processes using biorenewable resources is attracting ... -
Complexes of coinage metals stabilized by N-heterocyclic carbenes: catalytic and biological activities
(Universita degli studi di Salerno, 2022-05-30)Since the synthesis, the isolation, and the characterization of the first stable N-heterocyclic carbene (NHC) in 1991 by Arduengo and collaborators, this class of ligands has attracted the attention of researchers for ... -
Copolymerization of olefins with polar monomers by transition metal catalysts
(Universita degli studi di Salerno, 2022-06-13)The investigation into copolymerizing olefins by Ni(Il) complexes bearing pyridylimine ligands was achieved in this study. The complexes, in the presence of a proper activating agent, were found to generate active catalysts ... -
Development of iron-based catalysts for the coupling of carbon dioxide with epoxides
(Universita degli studi di Salerno, 2018-03-07)Beside the environmental and energetic issues, carbon dioxide can be considered as a resource. Many chemical transformations based on CO2 as C-1 building block have been developed. The coupling reaction of epoxides with ... -
Fluorescence-based sensors for the detection of biologically and environmentally relevant molecules
(Universita degli studi di Salerno, 2016-03-15)Hydrogen sulfide (H2S) has been known for long time as a toxic molecule in biological systems. More recent studies have shown that mammals can produce H2S in a controlled fashion, suggesting that it’s important in maintaining ... -
Isolation and characterization of lignins from Wheat straw and cardoon biomasses
(Universita degli studi di Salerno, 2023-03-13)The progressive reduction in the availability of oil resources, the unstoppable increase in their costs and the growing need for efficient environmental protection, imply an urgent development of new technologies for the ... -
Materiali ibridi e nanostrutturati derivati da copolimeri multiblocco polistirene-polibutadiene: sintesi e applicazioni
(Universita degli studi di Salerno, 2012-02-16)Scopo della presente tesi di Dottorato di Ricerca in Chimica, avente ampio carattere di esplorazione e innovazione, è stato quello di sviluppare materiali ibridi di natura organica ed inorganica con controllo della morfologia ... -
Metathesis reactions catalyzed by ruthenium complexes for the self-healing of aeronautical materials
(Universita degli studi di Salerno, 2018-03-05)In this PhD thesis work, Ruthenium catalysts were covalently and non-covalently linked to carbon-based nanomaterials, in order to give self-repairing ability to the aeronautical materials. These supported catalysts have ... -
New catalysts for ring-opening polymerization of cyclic esters
(Universita degli studi di Salerno, 2012-02-16)The Ring-Opening Polymerization of cyclic esters by metal complexes via coordination-insertion mechanism represents the most effective and versatile method for preparing aliphatic polyesters with a good control in terms ... -
New metal catalysts for Ring-Opening Polymerization of cyclic esters
(Universita degli studi di Salerno, 2022-05-28)I problemi ambientali ed economici legati ai polimeri derivanti da fonti petrolchimiche hanno spinto la ricerca accademica verso lo sviluppo di alternative green e degradabili rispetto alle plastiche convenzionali. I ... -
New metal catalysts for the synthesis of polyolefins and bioderived polymers
(Universita degli studi di Salerno, 2018-02-28)The aim of PhD project is the synthesis of new metal catalysts active in the polymerization of polar monomer and α-olefins. In the last decade, transition metal complexes bearing tetradentate bis(phenolato) ligands are ... -
Olefin Metathesis Reactions Promoted by Ru-Catalysts with a Syn Substituted N-heterocyclic Carbene Backbone
(Universita degli studi di Salerno, 2014-03-06)The development of efficient catalytic systems dedicated to the formation of C−C double bonds from simple to highly functionalized alkenes represents a great challenge in modern organic synthesis. In addressing this ... -
Redox proteins for the development of biosensors
(Universita degli studi di Salerno, 2011-02-21)In recent years the field of chemical sensors and optical biosensors has been developed considereably. A biosensor is a device composed of a biological component (Borisov and Wolfbeis 2008) that interacts with a target ... -
Ruthenium metathesis precatalysts with unsymmetrical Nheterocyclic carbene (NHC) ligands
(Universita degli studi di Salerno, 2018-03-07)Olefin metathesis is one of the most important chemical transformations for the formation of carbon-carbon double bonds. The possibility to build up highly funtionalised alkenes starting from simple olefins makes this ... -
Supported gold nanoparticles as promising catalysts in sustainable organic synthesis
(Universita degli studi di Salerno, 2021-03-23)Gold nanoparticles (AuNPs) emerged as very promising catalysts in a lot of organic reactions and industrial applications. These catalysts are in fact capable of catalysing chemical processes under mild conditions and according ... -
Sustainable approaches for the synthesis and the chemical degradation of polyesters
(Universita degli studi di Salerno, 2023-03-03)Petrochemical-based plastics have a significant impact on modern society, as underlined by their high production and countless applications. Indeed, the production of plastics has increased over the past 50 years, reaching ... -
Sustainable catalysis by polymer supported gold nanoparticles
(Universita degli studi di Salerno, 2016-03-16)Gold Nanoparticles are nanomaterials whose properties are completely different from the ones of the bulk material. Nowadays many chemists have been using them as catalysts which work under mild conditions and respect the ... -
Sviluppo di nuovi sistemi catalitici dei metalli del gruppo 4 per la polimerizzazione di monomeri olefinici e polari
(Universita degli studi di Salerno, 2016-03-18)In this PhD work, a series of eight new group 4 metal complexes 1−8 (1 = (t- BuOS)2TiCl2; 2 = (CumOS)2TiCl2; 3 = (t-BuOS)2Zr(CH2Ph)2; 4 = (CumOS)2Zr(CH2Ph)2); 5 = (t-BuOS)2Ti(OiPr)2; 6 = (t-BuOS)2Zr(OtBu)2; 7 = (t- ...
