scholarly journals Coupling Glucose Dehydrogenation with CO2 Hydrogenation by Hydrogen Transfer in Aqueous Media at Room Temperature

ChemSusChem ◽  
2018 ◽  
Vol 11 (13) ◽  
pp. 2029-2034 ◽  
Author(s):  
Guodong Ding ◽  
Ji Su ◽  
Cheng Zhang ◽  
Kan Tang ◽  
Lisha Yang ◽  
...  
Keyword(s):  
Room Temperature ◽  
Hydrogen Transfer ◽  
Aqueous Media ◽  
Co2 Hydrogenation

scholarly journals Cover Feature: Coupling Glucose Dehydrogenation with CO2 Hydrogenation by Hydrogen Transfer in Aqueous Media at Room Temperature (ChemSusChem 13/2018)

ChemSusChem ◽  
2018 ◽  
Vol 11 (13) ◽  
pp. 1992-1992
Author(s):  
Guodong Ding ◽  
Ji Su ◽  
Cheng Zhang ◽  
Kan Tang ◽  
Lisha Yang ◽  
...  
Keyword(s):  
Room Temperature ◽  
Hydrogen Transfer ◽  
Aqueous Media ◽  
Co2 Hydrogenation

Temperature Dependence of the Self-Assembled Styrene Based Random Ionomers in Aqueous Solution

2003 ◽  
Vol 775 ◽  
Author(s):  
Sung-Hwa Oh ◽  
Ju-Myung Song ◽  
Joon-Seop Kim ◽  
Hyang-Rim Oh ◽  
Jeong-A Yu
Keyword(s):  
Partition Coefficients ◽  
Room Temperature ◽  
Aqueous Media ◽  
The Self ◽  
Spectroscopic Methods ◽  
Ion Content ◽  
Repeat Units ◽  
Notable Effect ◽  
Order Of Magnitude ◽  
Experimental Errors

AbstractSolution behaviors of poly(styrene-co-sodium methacrylate) were studied by fluorescence spectroscopic methods using pyrene as a probe. The mol% of methacrylate was in the range 3.6–9.4. Water and N,N-dimethylforamide(DMF) mixture was used as a solvent (DMF/water = 0.2 mol %). The critical micelle (or aggregation) concentrations of ionomers and the partition coefficients of pyrene were obtained the temperature range 10–80°C. At room temperature, the values of CMCs (or CACs) were in the range 4.7 ×10-6 5.3 ×10-6 g/mL and we could not find any notable effect of the content of ionic repeat units within the experimental errors. Unlike CMCs, as the ion content increased, partitioning of pyrene between the hydrophobic aggregates and an aqueous media decreased from 1.5 ×105 to 9.4 ×104. As the temperature increased from 10 to 80 °C, the values of CMCs increased less than one order of magnitude. While, the partition coefficients of pyrene decreased one order of magnitude and the effect of the ion content became negligible.

One-Pot Synthesis of Water Soluble, Extremely Small-Sized Superparamagnetic Magnetite Nanoparticles

2012 ◽  
Vol 531 ◽  
pp. 219-222
Author(s):  
Li Hua Shen ◽  
Ting Shang ◽  
Jun Zhou ◽  
Dong Wang ◽  
Yu Han ◽  
...  
Keyword(s):  
Magnetite Nanoparticles ◽  
Room Temperature ◽  
Colloidal Stability ◽  
Aqueous Media ◽  
Mri Contrast Agents ◽  
Water Soluble ◽  
Potential Candidate ◽  
One Pot ◽  
Mri Contrast

Extremely small-sized superparamagnetic magnetite nanoparticles of 3Cit). The resulting Cit-coated magnetite nanoparticles exhibited long-term colloidal stability in aqueous media without any surface modification. Regarding the magnetic properties, the nanoparticles were superparamagnetic at room temperature, and might be the potential candidate for MRI contrast agents.

Efficient synthesis of pyrido[2,3-d]pyrimidine-7-carboxylic acids catalyzed by a TiO2/SiO2 nanocomposite in aqueous media at room temperature

2018 ◽  
Vol 73 (9) ◽  
pp. 641-645 ◽  
Author(s):  
Sepehr Sadegh-Samiei ◽  
Shahrzad Abdolmohammadi
Keyword(s):  
Heterogeneous Catalyst ◽  
Carboxylic Acids ◽  
Room Temperature ◽  
Aqueous Media ◽  
Reaction Times ◽  
Molar Ratio ◽  
Efficient Synthesis ◽  
Reaction Conditions ◽  
Moderate Reaction ◽  
Recyclable Heterogeneous Catalyst

AbstractA novel and efficient synthesis of eight 5-aryl-1,3-dimethyl-2,4-dioxo-1,2,3,4,5,8-hexahydropyrido[2,3-d]pyrimidine-7-carboxylic acids using a TiO2/SiO2 nanocomposite with a molar ratio of 1:1 as a recyclable heterogeneous catalyst is described. The desired products, five of which are new, are formed in short reaction times (2–3 h) with high to excellent yields (94%–98%) under very moderate reaction conditions (room temperature, aqueous media).

scholarly journals Photophysical Studies on Drug Conjugates of Stavudine/Zidovudine and 1,8-Naphthalimide in Different Solvent Systems

2021 ◽  
Vol 33 (11) ◽  
pp. 2729-2736
Author(s):  
Nidhi Singh ◽  
Farha Naaz ◽  
Rajesh Verma ◽  
Shivendra Singh ◽  
Ramendra K. Singh
Keyword(s):  
Room Temperature ◽  
Aqueous Media ◽  
Fluorescence Measurement ◽  
Drug Conjugates ◽  
Coupling Reagent ◽  
Body Level ◽  
Photophysical Studies ◽  
Solvent Systems ◽  
Hiv Drugs ◽  
Anti Hiv

A number of fluorescent conjugates of popular anti-HIV drugs 2′,3′-didehydro-2′,3′-dideoxythymidine (stavudine, d4T) and 3′-azido-3′-deoxythymidine (zidovudine, AZT) with 1,8-naphthalimide were synthesized using the coupling reagent dicyclohexylcarbodiimide (DCC) in the presence of 4-dimethylaminopyridine (DMAP) and N,N-dimethylformamide (DMF) as solvent at room temperature. The steady-state fluorescence measurement studies on these conjugates showed solvatochromic effect. Further, the fluorescence of drug conjugates was recorded in the presence of ions like Na+ and K+ at body level concentration of 135-145 mmol L-1 and 3.6-5.1 mmol L-1, respectively, in phosphate buffer at pH 7.4 in aqueous media. It was observed that the drug conjugates did not show appreciable fluorescence quenching in presence of ions and buffer.

scholarly journals Vapour-induced solid-state C–H bond activation for the clean synthesis of an organopalladium biothiol sensor

2016 ◽  
Vol 52 (88) ◽  
pp. 12960-12963 ◽  
Author(s):  
Andrea Monas ◽  
Krunoslav Užarević ◽  
Ivan Halasz ◽  
Marina Juribašić Kulcsár ◽  
Manda Ćurić
Keyword(s):  
Methyl Orange ◽  
Solid State ◽  
Room Temperature ◽  
Bond Activation ◽  
Aqueous Media ◽  
Accelerated Aging ◽  
Water Soluble ◽  
Clean Synthesis

Room-temperature accelerated aging in the solid state has been applied for quantitative azobenzene C–H bond activation by Pd(OAc)2. Water-soluble dicyclopalladated methyl orange is a selective chromogenic biothiol sensor at physiologically-relevant micromolar concentrations in aqueous media.

Micellar effect on hetero-aromatic nitrogen base promoted chromic acid oxidation of 1.3-propanediol in aqueous media at room temperature

2017 ◽  
Vol 225 ◽  
pp. 207-216 ◽  
Author(s):  
Susanta Malik ◽  
Debabrata Saha ◽  
Monohar Hossain Mondal ◽  
Pintu Sar ◽  
Aniruddha Ghosh ◽  
...  
Keyword(s):  
Room Temperature ◽  
Chromic Acid ◽  
Aqueous Media ◽  
Acid Oxidation ◽  
Nitrogen Base ◽  
Chromic Acid Oxidation ◽  
Micellar Effect

Palladium-Schiff-base-silica framework as a robust and recyclable catalyst for Suzuki–Miyaura cross-coupling in aqueous media

RSC Advances ◽  
2015 ◽  
Vol 5 (48) ◽  
pp. 38085-38092 ◽  
Author(s):  
Tahshina Begum ◽  
Manoj Mondal ◽  
Pradip K. Gogoi ◽  
Utpal Bora
Keyword(s):  
Schiff Base ◽  
Catalytic Activity ◽  
Room Temperature ◽  
Aqueous Media ◽  
Coupling Reaction ◽  
Cross Coupling ◽  
Recyclable Catalyst ◽  
Cross Coupling Reaction

A novel Pd@imine-SiO2 catalyst was prepared and found to exhibit excellent catalytic activity in a Suzuki-Miyaura cross-coupling reaction under aqueous media at room temperature.

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