Microheterogeneous Catalysis

Bernal, Eva; Marchena, M.; Sánchez, Francisco

doi:10.3390/molecules15074815

Cited by 7 publications

(5 citation statements)

References 168 publications

(205 reference statements)

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“…Polymerization techniques such as atom transfer radical polymerization (ATRP) have been used to prepare stimuli‐responsive micelles 6–9. These micelles have immense potential applications in the different fields, for example, in drug or gene delivery,10, 11 as substrate modifiers,12, 13 in catalysis,14 and in energy storage 15. The control of micelle properties can be achieved by using a stimuli‐responsive polymer such as poly(N‐isopropylacrylamide) (PNIPAAm) 16, 17.…”

Section: Introductionmentioning

confidence: 99%

Poly(DMAEMA‐co‐PPGMA): Dual‐responsive “reversible” micelles

Loh

2012

J of Applied Polymer Sci

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A series of copolymers with poly(dimethylaminoethyl methacrylate) (P(DMAEMA)), and poly(propylene glycol methacrylate) (PPGMA) segments were synthesized by atom transfer radical polymerization (ATRP) technique. The composition and structural information of the copolymers were studied by gel permeation chromatography (GPC), 1H‐NMR, and TGA. The critical micellization concentrations (CMCs), as well as thermodynamic parameters for micelle formation, of these water‐soluble copolymers were determined at different temperatures. The micelles formed were temperature and pH responsive as determined by lower critical solution temperature (LCST) measurements at different pH environments. At elevated temperatures and low pH, micelles will form with the hydrophobic P(PPGMA) core and the hydrophilic P(DMAEMA) corona. When the temperature is lowered and the pH raised, the morphology of the micelles are “reversed.” In this situation, micelles will form with the hydrophobic P(DMAEMA) core and the hydrophilic P(PPGMA) corona. Preliminary cytotoxicity studies were carried out and showed that these copolymers were nontoxic to cells. These copolymers thus show significant promise for use as a multiresponsive carrier vehicle for the delivery of drugs and other therapeutics to the body. © 2012 Wiley Periodicals, Inc. J. Appl. Polym. Sci., 2013

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Section: Introductionmentioning

confidence: 99%

Poly(DMAEMA‐co‐PPGMA): Dual‐responsive “reversible” micelles

Loh

2012

J of Applied Polymer Sci

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“…In this case, there are different DNA-ligand binding modes [8]. One of them is an intercalation of ligands between base pairs of DNA.…”

Section: Effects Of Heterogeneous Quencher Distributionmentioning

confidence: 99%

“…That is, the equation describing changes in the emission intensities in the presence of the quencher is the same as in the absence of the quencher [Eqn (8)]. …”

Section: Introductionmentioning

confidence: 99%

A New Formulation for Quenching Processes under Restricted Geometry Conditions in the Slow Exchange Limit

Sánchez

Barrios

López‐López

et al. 2014

Progress in Reaction Kinetics and Mechanism

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A quantitative treatment of quenching processes under restricted geometry conditions in the Slow Exchange Limit is presented. The expressions for K SV have been obtained for this limit in some common situations that can arise in studies under restricted geometry conditions, such as an inhomogeneous quencher distribution in the solution, the presence of oxygen in solution, or the case of solutions containing a mixture of receptors. These situations have been considered and incorporated into the treatment.

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“…For example the addition of a surfactant leads to an increase in rate, a process known as micellar catalysis [10]. Micelle systems are complex and highly fluxional [11] with micelles being formed, destroyed and reformed on a rapid timescale. Such fluxionality means that it would be difficult to expect regioselectivity to be readily achievable.…”

Section: Introductionmentioning

confidence: 99%

An Attempt at Enhancing the Regioselective Oxidation of Decane Using Catalysis with Reverse Micelles

et al. 2012

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The regioselective oxidation of linear alkanes to give terminal oxidation products represents a major challenge for catalysis. A number of previous approaches have shown that confinement and encapsulation can offer an experimentally viable way forward. Against this background we have investigated the use of a system comprising gaseous oxygen, a homogenous catalyst (ammonium metavanadate) confined in an aqueous solution within reverse micelles formed in decane using bis (2-ethylhexyl)sulfosuccinate. At low conversion and at short reaction times we show that the approach does lead to a small enhancement in the selectivity to terminal products, but unsurprisingly the surfactant is more readily oxidised than decane and so the small positive effects of the micellar catalyst system are short-lived.

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Microheterogeneous Catalysis

Cited by 7 publications

References 168 publications

Poly(DMAEMA‐co‐PPGMA): Dual‐responsive “reversible” micelles

Poly(DMAEMA‐co‐PPGMA): Dual‐responsive “reversible” micelles

A New Formulation for Quenching Processes under Restricted Geometry Conditions in the Slow Exchange Limit

An Attempt at Enhancing the Regioselective Oxidation of Decane Using Catalysis with Reverse Micelles

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