Buscar
Mostrando ítems 1-10 de 131
Bifunctional mesoporous silica nanoparticles as cooperative catalysts for the Tsuji-Trost reaction: tuning the reactivity of silica nanoparticles
(Royal Society Chemistry - RSCCambridge, 2013-01)
Bifunctional mesoporous silica nanoparticles (MSNs) bearing Pd-complexes and additional basic siteswere prepared and tested as cooperative active catalysts in the Tsuji–Trost allylation of ethyl acetoacetate. Functionalization ...
Preparation of bifunctional mesoporous silica nanoparticles by orthogonal click reactions and their application in cooperative catalysis
(Wiley-VCH VerlagWeinheim, 2012-12)
The synthesis of bifunctional mesoporous silica nanoparticles is described. Two chemically orthogonal functionalities are incorporated into mesoporous silica by co-condensation of tetraethoxysilane with two orthogonally ...
Sulfur-stabilised copper nanoparticles for the aerobic oxidation of amines to imines under ambient conditions
(Royal Society of Chemistry, 2021-05)
The stabilisation of metal nanoparticles and control of their oxidation state are crucial factors in nanocatalysis. Elemental sulfur has been found to be a cheap and effective stabilising agent for copper nanoparticles in ...
Advances in magnetic noble metal/iron-based oxide hybrid nanoparticles as biomedical devices
(MDPI AG, 2019-09)
The study of the noble metal magnetic hybrid nanoparticles is a really promising topic from both the scientific and the technological points of views, with applications in several fields. Iron oxide materials which are ...
Nanoparticles as template for porphyrin nanostructure growth
(World Sci Publ Co Inc, 2019-04)
Porphyrins and metalloporphyrins are one of the most widely studied platforms for the construction of supramolecular structures. These compounds have an extended aromatic system that allows π-π stacking interactions which, ...
Thermal annealing as an easy tool for the controlled arrangement of gold nanoparticles in block-copolymer thin films
(Iop Publishing, 2013-05-30)
The results indicated that all three blends used as modifiers (PSn/PSnSH@Au) were successfully located in the PS phase during thermally induced BC self-assembly for a composition range from 5 to 43 wt% without macro-phase ...
Role of the capping agent in the interaction of hydrophilic Ag nanoparticles with DMPC as a model biomembrane
(Royal Society of Chemistry, 2016-05)
The interaction of 1,2-dimyristoyl-sn-glycero-3-phosphocholine (DMPC) Langmuir monolayers as a model biomembrane with small silver nanoparticles (AgNPs) similar in size but coated with different capping molecules such as ...
Ternary complex formation of phosphate with Ca and Mg ions binding to ferrihydrite: Experiments and mechanisms
(2020-03-25)
Calcium (Ca) and magnesium (Mg) are the most abundant alkaline-earth metal ions in nature, and their interaction with ferrihydrite (Fh) affects the geochemical cycling of relevant ions, including phosphate (PO4). The ...
Thermo-reversible sol-gel transition of TiO2 nanoparticles with surface modified by p-toluene sulfonic acid
(Elsevier B.V., 2010-01-01)
In this paper an unprecedent thermo-reversible sol-gel transition for titania nanoparticles dispersed in a solution of p-toluene sulfonic acid (PTSH) in isopropanol is reported. The sol formed by the thermo-hydrolysis at ...
Thermo-reversible sol-gel transition of TiO2 nanoparticles with surface modified by p-toluene sulfonic acid
(Elsevier B.V., 2010-01-01)
In this paper an unprecedent thermo-reversible sol-gel transition for titania nanoparticles dispersed in a solution of p-toluene sulfonic acid (PTSH) in isopropanol is reported. The sol formed by the thermo-hydrolysis at ...