Water-Soluble N-Heterocyclic Carbene Platinum(0) Complexes: Recyclable Catalysts for the Hydrosilylation of Alkynes in Water at Room Temperature

2012 ◽  
Vol 31 (8) ◽  
pp. 3355-3360 ◽  
Author(s):  
Gustavo F. Silbestri ◽  
Juan Carlos Flores ◽  
Ernesto de Jesús
Keyword(s):  
Room Temperature ◽  
Water Soluble ◽  
Recyclable Catalysts

Tyrosine-Selective Bioconjugation with Iminoxyl Radicals

2020 ◽  
Author(s):  
Katsuya Maruyama ◽  
Takashi Ishiyama ◽  
Yohei Seki ◽  
Kounosuke Oisaki ◽  
Motomu Kanai
Keyword(s):  
Reaction Time ◽  
Steric Hindrance ◽  
Room Temperature ◽  
Water Soluble ◽  
Light Irradiation ◽  
Sodium Ascorbate ◽  
Iminoxyl Radical ◽  
Short Reaction Time ◽  
Modified Peptides ◽  
The Stability

A novel Tyr-selective protein bioconjugation using the water-soluble persistent iminoxyl radical is described. The conjugation proceeded with high Tyr-selectivity and short reaction time under biocompatible conditions (room temperature in buffered media under air). The stability of the conjugates was tunable depending on the steric hindrance of iminoxyl. The presence of sodium ascorbate and/or light irradiation promoted traceless deconjugation, restoring the native Tyr structure. The method is applied to the synthesis of a protein-dye conjugate and further derivatization to azobenzene-modified peptides.

Water-Soluble Imine Ligand/Palladium-Catalyzed Suzuki Reaction at Room Temperature

2010 ◽  
Vol 31 (10) ◽  
pp. 1277-1280
Author(s):  
Chun LIU ◽  
Qijian NI ◽  
Pingping HU ◽  
Hao YUAN ◽  
Zilin JIN
Keyword(s):  
Room Temperature ◽  
Suzuki Reaction ◽  
Water Soluble ◽  
Palladium Catalyzed

Dynamics of Anthracene Excimer Formation within a Water-Soluble Nanocavity at Room Temperature

2021 ◽  
Vol 143 (4) ◽  
pp. 2025-2036
Author(s):  
Aritra Das ◽  
Ashwini Danao ◽  
Shubhojit Banerjee ◽  
A. Mohan Raj ◽  
Gaurav Sharma ◽  
...  
Keyword(s):  
Room Temperature ◽  
Water Soluble ◽  
Excimer Formation

scholarly journals A Novel Photosynthesis of Carboxymethyl Starch-Stabilized Silver Nanoparticles

2014 ◽  
Vol 2014 ◽  
pp. 1-11 ◽  
Author(s):  
M. A. El-Sheikh
Keyword(s):  
Silver Nanoparticles ◽  
Room Temperature ◽  
Colloidal Solution ◽  
Synthesis Method ◽  
Silver Ions ◽  
Water Soluble ◽  
Synthesis Process ◽  
Carboxymethyl Starch ◽  
Round Shape ◽  
First Time

The water soluble photoinitiator (PI) 4-(trimethyl ammonium methyl) benzophenone chloride is used for the first time in the synthesis of silver nanoparticles (AgNPs). A new green synthesis method involves using PI/UV system, carboxymethyl starch (CMS), silver nitrate, and water. A mechanism of the reduction of silver ions to AgNPs by PI/UV system as well as by the newly born aldehydic groups was proposed. The synthesis process was assessed by UV-vis spectra and TEM of AgNPs colloidal solution. The highest absorbance was obtained using CMS, PI and AgNO3concentrations of 10 g/L, 1 g/L, and 1 g/L, respectively; 40°C; 60 min; pH 7; and a material : liquor ratio 1 : 20. AgNPs so-obtained were stable in aqueous solution over a period of three weeks at room temperature (~25°C) and have round shape morphology. The sizes of synthesized AgNPs were in the range of 1–21 nm and the highest counts % of these particles were for particles of 6–10 and 1–3 nm, respectively.

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.

scholarly journals Formation of Water-Soluble Fullerenes [C60,C70] under Ultrasonication and Antioxidant Effect

2017 ◽  
Vol 5 (1) ◽  
pp. 61
Author(s):  
Weon-Bae Ko ◽  
Hong-Seok Jeong ◽  
Sung-Ho Hwang
Keyword(s):  
Hydrogen Peroxide ◽  
Room Temperature ◽  
Antioxidant Effect ◽  
Water Soluble ◽  
Maldi Tof Ms ◽  
Pc 12 Cells ◽  
Effect Of Water ◽  
Maldi Tof ◽  
Line Following ◽  
Tof Ms

<p>The water-soluble fullerenes [C<sub>60</sub>, C<sub>70</sub>] are prepared with fullerenes [C<sub>60</sub>, C<sub>70</sub>] and a mixture of oxidants (v/v) at the ratio of 3:1 under ultrasonic condition at room temperature. The MALDI-TOF MS confirmed that the water-soluble compounds were C<sub>60</sub> and C<sub>70</sub>. The antioxidant effect of water-soluble fullerenes [C<sub>60</sub>, C<sub>70</sub>] in the PC 12 cells (Rat pheochromocytoma) line following exposure to hydrogen peroxide (H<sub>2</sub>O<sub>2</sub>) was investigated.</p>

Water-soluble boron carbon oxynitride dots with excellent solid-state fluorescence and ultralong room-temperature phosphorescence

Nano Research ◽  
2020 ◽  
Vol 13 (12) ◽  
pp. 3261-3267
Author(s):  
Shenghui Han ◽  
Gang Lian ◽  
Xiaoliang Zeng ◽  
Zhaozhen Cao ◽  
Qilong Wang ◽  
...  
Keyword(s):  
Solid State ◽  
Room Temperature ◽  
Water Soluble ◽  
Room Temperature Phosphorescence ◽  
Solid State Fluorescence ◽  
Boron Carbon

Gold nanoparticles stabilized by PEG-tagged imidazolium salts as recyclable catalysts for the synthesis of propargylamines and the cycloisomerization of γ-alkynoic acids

2020 ◽  
Vol 44 (16) ◽  
pp. 6130-6141 ◽  
Author(s):  
Guillem Fernández ◽  
Laura Bernardo ◽  
Ana Villanueva ◽  
Roser Pleixats
Keyword(s):  
Gold Nanoparticles ◽  
Water Soluble ◽  
Imidazolium Salts ◽  
Recyclable Catalysts

Water-soluble gold nanoparticles prepared in the presence of PEG-tagged tris-imidazolium bromide, containing Au(0) and Au(i) species, are reusable catalysts.

scholarly journals Water-Soluble Palladacycles as Precursors to Highly Recyclable Catalysts for the Suzuki Coupling of Aryl Bromides in Aqueous Solvents.

ChemInform ◽  
2006 ◽  
Vol 37 (51) ◽  
Author(s):  
Rongcai Huang ◽  
Kevin H. Shaughnessy
Keyword(s):  
Suzuki Coupling ◽  
Water Soluble ◽  
Aryl Bromides ◽  
Recyclable Catalysts

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.

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