نتایج جستجو برای: polymeric precursor

تعداد نتایج: 91431  

2016
Chulwoo Park Jinhwan Jung Chul Wee Lee Joungmo Cho

This paper reports the synthetic route of 3-D network shape α-Fe2O3 from aqueous solutions of iron precursor using a non-ionic polymeric soft-template, Pluronic P123. During the synthesis of α-Fe2O3, particle sizes, crystal phases and morphologies were significantly influenced by pH, concentrations of precursor and template. The unique shape of worm-like hematite was obtained only when a starti...

2013
Juchen Guo Zichao Yang Lynden A. Archer

We report a method for synthesizing hierarchically structured tin– carbon (Sn–C) composites via aerosol spray pyrolysis. In this method, an aqueous precursor solution containing tin(II) chloride and sucrose is atomized, and the resultant aerosol droplets carried by an inert gas are pyrolyzed in a high-temperature tubular furnace. Owing to the unique combination of high reaction temperature and ...

Journal: :Crystals 2021

This study focuses on the investigation of a CdTe quantum dots (QDs) formation from cadmium-carboxylate precursor, such as cadmium isostearate (Cd(ISA)2), to produce QDs with tunable photoluminescent (PL) properties. The are obtained by thermal decomposition precursors directly in polymer matrix (in situ method) or solution and then encapsulated (ex method). In both approaches, time course is f...

2017
Gerard Cadafalch Gazquez Vera Smulders Sjoerd A. Veldhuis Paul Wieringa Lorenzo Moroni Bernard A. Boukamp Johan E. ten Elshof

The fabrication process of ceramic yttria-stabilized zirconia (YSZ) and nickel oxide nanofibers by electrospinning is reported. The preparation of hollow YSZ nanofibers and aligned nanofiber arrays is also demonstrated. The influence of the process parameters of the electrospinning process, the physicochemical properties of the spinning solutions, and the thermal treatment procedure on spinnabi...

Journal: :Physical chemistry chemical physics : PCCP 2012
Yuan Jiang Laurie Gower Dirk Volkmer Helmut Cölfen

The existence region of a polymer-induced liquid precursor (PILP) phase for crystals of an organic compound (DL-glutamic acid, Glu) was determined for the first time in the phase diagram of the Glu-polyethyleneimine-water-ethanol system. The existence region and the amount of PILP phase relative to the thermodynamically stable crystal phase were very small. Other phases detected in the phase di...

Journal: :Environmental science & technology 2006
Mary Joyce A Dinglasan-Panlilio Scott A Mabury

Polyfluorinated telomer alcohols and sulfonamides are classes of compounds recently identified as precursor molecules to the perfluorinated acids detected in the environment. Despite the detection and quantification of these volatile compounds in the atmosphere, their sources remain unknown. Both classes of compounds are used in the synthesis of various fluorosurfactants and incorporated in pol...

2009
Xikui Liu Manfred Stamm

Realizing the vast technological potential of patternable block copolymers requires both the precise controlling of the orientation and long-range ordering, which is still a challenging topic so far. Recently, we have demonstrated that ordered nanoporous thin film can be fabricated from a simple supramolecular assembly approach. Here we will extend this approach and provide a general route to f...

Journal: :Molecules 2016
Ivan Nemec Radovan Herchel Zdeněk Trávníček

Crystal structures and magnetic properties of polymeric and trinuclear heterobimetallic MnIII···PtII···MnIII coordination compounds, prepared from the Ba[Pt(CN)₄] and [Mn(L4A/B)(Cl)] (1a/b) precursor complexes, are reported. The polymeric complex [{Mn(L4A)}₂{μ⁴-Pt(CN)₄}]n (2a), where H₂L4A = N,N'-ethylene-bis(salicylideneiminate), comprises the {Mn(L4A)} moieties covalently connected through th...

Journal: :iranian journal of environmental sciences 0
r krishna sharma assistant professor, physics, mepcoschlenk engineering college, sivakasi, tamilnadu, india-626005 s nagaveena assistant professor,physics,kalasalingam university,krishnankovil,tamilnadu, india

surface ozone (surface o3)is a secondary pollutant and there are only limited studies on ozone in south india. studies have revealed a strong correlation between higher ozone levels and warmer days. surface o3 along with its precursors like no2, co and ch4 are being measured at kanyakumari (8.0780° n, 77.5410° e), tamilnadu, india and in this paper we present the summer time variation of ozone ...

Journal: :Acta biomaterialia 2013
Matilde Bongio Jeroen J J van den Beucken M Reza Nejadnik Zeinab Tahmasebi Birgani Pamela Habibovic Lucas A Kinard F Kurtis Kasper Antonios G Mikos Sander C G Leeuwenburgh John A Jansen

In the current study, oligo(poly(ethylene glycol) fumarate) (OPF)-based hydrogels were tested for the first time as injectable bone substitute materials. The primary feature of the material design was the incorporation of calcium phosphate (CaP) nanoparticles within the polymeric matrix in order to compare the soft tissue response and bone-forming capacity of plain OPF hydrogels with CaP-enrich...

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