نتایج جستجو برای: in situ forming sol gel

تعداد نتایج: 17010565  

2015
Jennifer R. Hiscock Mark R. Sambrook Neil J. Wells Philip A. Gale

A series of supramolecular diamide organogels containing a reactive compound for the remediation of organophosphorus (OP) species, in particular OP chemical warfare agents (CWAs), has been prepared in DMSO. The organogels have been found to absorb, encapsulate and decontaminate various OP CWA simulants in situ. At high simulant concentrations the gels also undergo a gel–sol transition releasing...

Journal: :Chemical communications 2010
Yingke Zhou Jie Wang Yuanyuan Hu Ryan O'Hayre Zongping Shao

A novel composite electrode structure with highly-conductive 3D nanotube networks superimposed into interlaced porous LiFePO(4) media was designed and realized via an in situ sol-gel process, yielding a high-performance multidimensional composite cathode for high-energy and high-power lithium-ion batteries.

Journal: :Chemical communications 2012
Mita Dasog Jonathan G C Veinot

Silicon nitride nanocrystals (NCs) have been prepared via in situ nitridation of magnesium followed by a metathesis reaction with sol-gel derived silica particles. Highly luminescent, freestanding β-Si(3)N(4) NCs with complex surface chemistry dominated by Si-H and N-H moieties were isolated upon etching with hydrofluoric acid.

Journal: :Chemical communications 2007
Geo Paul Stefan Steuernagel Hubert Koller

The drug molecule Propranolol has been encapsulated by a sol-gel process in an organic-inorganic hybrid matrix by in-situ self-assembly; the 2D HETCOR solid state NMR spectroscopy provides direct proof of the intimate spatial relationship between the host matrix and guest drug molecules.

Journal: :Chemical communications 2016
Arindam Indra Prashanth W Menezes Kamalakannan Kailasam Dirk Hollmann Marc Schröder Arne Thomas Angelika Brückner Matthias Driess

The nature of a nickel-based co-catalyst deposited on a sol-gel prepared porous graphitic-carbon nitride (sg-CN), for photocatalytic H2 production from water, has been investigated. The formation of the active catalytic species, charge separation and recombination of the photogenerated electrons and holes during photochemical H2 evolution has been determined for the first time using in situ EPR...

2006
ANBALAGAN BALAMURUGAN

Hydroxyapatite (HAP) ceramics belongs to a class of calcium phosphate-based biomaterial, which has been widely used as bone substitute for long time. In recent years, synthetic HAP has assumed substantial interest and importance due to its chemical similarity with the natural Ca phosphate mineral present in a biological hard tissue. Considering the wide applications of calcium phosphate compoun...

2016
Yin Huang Long Que Sumit Chaudhary

................................................................................... viii CHAPTER 1. INTRODUCYION ........................................................... 1 1.1 Motivation ................................................................................. 1 1.2 Outline ..................................................................................... 2 CHAPTER 2. SOL-GEL PHOT...

Journal: :Journal of Drug Delivery and Therapeutics 2021

Delivery of the drug to ocular area is blocked by protective layers covering eyes; it has always been a major problem find effective bioavailability active in due short duration precorneal majority stay. Direct delivery systems combine as well oil, solution, and suspension, result, many are not able effectively treat eye diseases. Many works have done being overcome this one which use in-situ b...

2012
Jung-Pil Lee Sinho Choi Soojin Park

We successfully synthesized two different structures, silica nanospheres and porous polymer membranes, via nanophase separation, based on a sol-gel process. Silica sol, which was in situ polymerized from tetraorthosilicate, was used as a precursor. Subsequently, it was mixed with a polymer that was used as a matrix component. It was observed that nanophase separation occurred after the mixing o...

2004
ZHONGPING CHEN

Light transducing phycobiliproteins are encapsulated in optically transparent sol-gel matrices. Absorption and fluorescence spectroscopies are used to characterize the effect of the sol-gel encapsulation on the conformation and aggregation states of the three major phycobiliproteins present in phycobilisomes: phycoerythrin, phycocyanin, and allophycocyanin. It is found that the effects of sol-g...

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