نتایج جستجو برای: solvent evaporation method

تعداد نتایج: 1688659  

Journal: :Chemical communications 2009
Nam-Jung Kim Mengshi Lin Zhiqiang Hu Hao Li

An elusive chemical contribution to SERS is investigated by estimating the chemical coupling strengths through a dynamic relative peak analysis during solvent evaporation from a diluted chemical sample that is drop-deposited on a soft SERS substrate.

Journal: :Chemical communications 2014
Bing Li Jiosep Puigmartí-Luis Alain M Jonas David B Amabilino Steven De Feyter

Self-assembly of a TTF derivative capable of forming self-assembled monolayers at the surface of graphite displays hierarchical growth of multilayers and concentric nanorings upon evaporation of the solvent as observed by AFM.

Journal: :Nanoscale 2011
Haiyan Wang Dayong Wu Dongzhou Li Zhongwei Niu Yuzhe Chen Daihua Tang Min Wu Jianhua Cao Yong Huang

A core/sheath structured mesoporous silica nanofibre was prepared by coaxial electrospinning combined with the solvent evaporation induced surfactant assembly process. The characterization has given convincing evidence for the continuous highly ordered mesoporous structures, and its catalyst application was tested.

2010
Michele Marini

Drug carrier biocompatible and biodegradable nanoparticles of about 15 nm were prepared by solvent evaporation technique from star-shaped poly(D,L-lactide) synthesized using dipentaerythritol as core and Tin (II) ethylhexanoate as catalyst.

Journal: :Journal of pharmaceutical and biological sciences 2023

Talinolol is a beta1-selective adreno receptor antagonist well known for its Cardio protective and antihypertensive activity. beta blocker. In biopharmaceutical classification system the drugs which come under class II are characterized by more membrane permeability, less dissolution rate. poor aqueous solubility drug leads to bioavailability. So, aimed of this study was develop immediate relea...

Journal: :Journal of biomedical materials research. Part A 2004
Edward A Sander Alina M Alb Eric A Nauman Wayne F Reed Kay C Dee

Poly(lactide-co-glycolide) (PLGA) is used in many biomedical applications because it is biodegradable, biocompatible, and FDA approved. PLGA can also be processed into porous tissue scaffolds, often through the use of organic solvents. A static light scattering experiment showed that 75/25 PLGA is well solvated in acetone and methylene chloride, but forms aggregates in chloroform. This led to a...

Journal: :Chemical & pharmaceutical bulletin 2000
T Yamada T Imai K Ouchi M Otagiri F Hirayama K Uekama

Interactions of KCA-098 with heptakis(2,6-di-O-methyl)-beta-cyclodextrin (DM-beta-CyD) in solution and in the solid state were studied by the solubility method, UV and fluorescence spectroscopy, powder X-ray diffractometry, and thermal analysis. The KCA-098/DM-beta-CyD system showed an A(L) type solubility diagram with stability constants of 5870 and 2220 M(-1) in aqueous and 10% methanol solut...

2006
Mark Barrett

Anti-solvent crystallization can be used as an alternative to cooling or evaporation for the separation and purification of solid product in the pharmaceutical industry. Addition of antisolvent reduces the solubility of a solute in solution thereby facilitating the generation of supersaturation, the driving force for nucleation and growth. Some of the problems associated with anti-solvent cryst...

2015
D. Douglas Richards M. Trisha C. Ang Robert McDonald Matthias Bierenstiel

The reaction of pyrrole-2-carboxaldehyde and 2-(methyl-sulfan-yl)aniline in refluxing methanol gave an olive-green residue in which yellow crystals of the title compound, C12H12N2S·CH3OH, were grown from slow evaporation of methanol at 263 K. In the crystal, hydrogen-bonding inter-actions link the aniline mol-ecule and a nearby methanol solvent mol-ecule. These units are linked by a pair of wea...

Journal: :Dental materials : official publication of the Academy of Dental Materials 2006
T G Nunes F C P Garcia R Osorio R Carvalho M Toledano

OBJECTIVE To ascertain the efficacy of polymerization of self-etching dental adhesives in different solvent evaporation conditions. MATERIAL AND METHODS Four self-etching adhesive systems were studied. Two of them are classified as mild two-step self-etching adhesives (Clearfil SE Bond, Protect Bond) and the other two are strong one-step systems (Xeno III, ADP-Prompt-L-Pop). The influence of ...

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