High Performance Liquid Chromatography:Article Title: Preparation of a 4′‐Thiouridine Building‐Block for Solid‐Phase Oligonucleotide Synthesis
Article Snippet: .. Ltd. India) Dichloromethane (anhydrous, dried over 4‐Å molecular sieves, Sigma‐Aldrich) meta‐ Chloroperoxybenzoic acid ( m ‐CPBA), ≤77% (Sigma‐Aldrich) Hexane, ≥95% (Thermo Fisher Scientific) Ethyl acetate (EtOAc), ≥99.5% (Sigma‐Aldrich) Nitrogen gas (passed through a Drierite ® drying column) Sodium bicarbonate (NaHCO 3 ), ≥99.7% (Sigma‐Aldrich) Magnesium sulfate (MgSO 4 ) (Thermo Fisher Scientific) Uracil, ≥99.0% (Sigma‐Aldrich) Hexamethyldisilazane (HMDS), ≥99% (anhydrous, Sigma‐Aldrich) Trimethylchlorosilane (TMSCl), 98% (Alfa Aesar) Acetonitrile (HPLC grade, anhydrous, dried over 3‐Å molecular sieves, Sigma‐Aldrich) N , N‐ Diisopropylethylamine (DIPEA), 99.5% (Sigma‐Aldrich) Trimethylsilyl trifluoromethanesulfonate (TMSOTf), 99% (Sigma‐Aldrich) Silica gel (Sigma‐Aldrich, technical grade, pore size 60 Å, 230 to 400 mesh particle size, 40 to 63 μm particle size) Tetrahydrofuran (THF, anhydrous, dried over 4‐Å molecular sieves, Thermo Fisher Scientific) Tetrabutylammonium fluoride (TBAF, 1 M in THF, Sigma‐Aldrich) DOWEX ® 50W X8 H + (Sigma‐Aldrich) N , N ‐Dimethylformamide (DMF) (Thermo Fisher Scientific, extra dry over molecular sieves, AcroSeal ® ) 2,6‐Lutidine, 98% (Sigma‐Aldrich) Di‐ tert ‐butylsilyl bis(trifluoromethanesulfonate) ( t Bu 2 Si(OTf) 2 ), 97% (Sigma‐Aldrich) tert ‐Butyldimethylsilyl trifluoromethanesulfonate (TBDMSOTf), 98% (Sigma‐Aldrich) 4,4′‐Dimethoxytrityl chloride (DMTrCl), recrystallized from hexane (Sigma‐Aldrich) Pyridine, 99.5% (Thermo Fisher Scientific, extra dry over molecular sieves, AcroSeal ® ) 2‐cyanoethyl di‐isopropylchlorophosphoramidite, 95% (Thermo Fisher Scientific) Round‐bottom flasks 25‐ml 50‐ml 100‐ml 500‐ml 500‐ml multinecked round bottom flask Magnetic stirrer bars Rubber septa Stirrer hot plates Balloons Vacuum/nitrogen manifold (Connected to vacuum pump, Welch CRVpro 4) Plastic Luer lock syringes 1‐ml 3‐ml 6‐ml 12‐ml 24‐ml Disposable Luer lock needles Separatory funnels 250‐ml 500‐ml Conical flasks 250‐ml 500‐ml Rotary evaporator Silica gel TLC plates (Merck) Condensers Chromatography columns UV lamp Falcon TM tubes Test tubes Cannula Eppendorfs Ice/NaCl bath ..
Article Title: Tuning the Precipitation and Fractionation of Nanoparticles in Gas-Expanded Liquid Mixtures
Article Snippet: Nanoparticle size-selective fractionation is a widely used technique which is capable of narrowing the size distribution of a nanoparticle dispersion while also targetting a specific size to make use of the highly size dependent properties of nanoscale materials.. Various methods have been used to size-selectively fractionate nanoparticles including size-exclusion liquid chromatography, high-pressure liquid chromatography, isoelectric focusing electrophoresis, gel electrophoresis, and diafiltration.. The most common method makes use of a solvent antisolvent interaction in which a ligand stabilized nanoparticle is dispersed in a solvent and an antisolvent is added to destabilize the nanoparticles and induce precipitation.
Pore Size:Article Title: Preparation of a 4′‐Thiouridine Building‐Block for Solid‐Phase Oligonucleotide Synthesis
Article Snippet: .. Ltd. India) Dichloromethane (anhydrous, dried over 4‐Å molecular sieves, Sigma‐Aldrich) meta‐ Chloroperoxybenzoic acid ( m ‐CPBA), ≤77% (Sigma‐Aldrich) Hexane, ≥95% (Thermo Fisher Scientific) Ethyl acetate (EtOAc), ≥99.5% (Sigma‐Aldrich) Nitrogen gas (passed through a Drierite ® drying column) Sodium bicarbonate (NaHCO 3 ), ≥99.7% (Sigma‐Aldrich) Magnesium sulfate (MgSO 4 ) (Thermo Fisher Scientific) Uracil, ≥99.0% (Sigma‐Aldrich) Hexamethyldisilazane (HMDS), ≥99% (anhydrous, Sigma‐Aldrich) Trimethylchlorosilane (TMSCl), 98% (Alfa Aesar) Acetonitrile (HPLC grade, anhydrous, dried over 3‐Å molecular sieves, Sigma‐Aldrich) N , N‐ Diisopropylethylamine (DIPEA), 99.5% (Sigma‐Aldrich) Trimethylsilyl trifluoromethanesulfonate (TMSOTf), 99% (Sigma‐Aldrich) Silica gel (Sigma‐Aldrich, technical grade, pore size 60 Å, 230 to 400 mesh particle size, 40 to 63 μm particle size) Tetrahydrofuran (THF, anhydrous, dried over 4‐Å molecular sieves, Thermo Fisher Scientific) Tetrabutylammonium fluoride (TBAF, 1 M in THF, Sigma‐Aldrich) DOWEX ® 50W X8 H + (Sigma‐Aldrich) N , N ‐Dimethylformamide (DMF) (Thermo Fisher Scientific, extra dry over molecular sieves, AcroSeal ® ) 2,6‐Lutidine, 98% (Sigma‐Aldrich) Di‐ tert ‐butylsilyl bis(trifluoromethanesulfonate) ( t Bu 2 Si(OTf) 2 ), 97% (Sigma‐Aldrich) tert ‐Butyldimethylsilyl trifluoromethanesulfonate (TBDMSOTf), 98% (Sigma‐Aldrich) 4,4′‐Dimethoxytrityl chloride (DMTrCl), recrystallized from hexane (Sigma‐Aldrich) Pyridine, 99.5% (Thermo Fisher Scientific, extra dry over molecular sieves, AcroSeal ® ) 2‐cyanoethyl di‐isopropylchlorophosphoramidite, 95% (Thermo Fisher Scientific) Round‐bottom flasks 25‐ml 50‐ml 100‐ml 500‐ml 500‐ml multinecked round bottom flask Magnetic stirrer bars Rubber septa Stirrer hot plates Balloons Vacuum/nitrogen manifold (Connected to vacuum pump, Welch CRVpro 4) Plastic Luer lock syringes 1‐ml 3‐ml 6‐ml 12‐ml 24‐ml Disposable Luer lock needles Separatory funnels 250‐ml 500‐ml Conical flasks 250‐ml 500‐ml Rotary evaporator Silica gel TLC plates (Merck) Condensers Chromatography columns UV lamp Falcon TM tubes Test tubes Cannula Eppendorfs Ice/NaCl bath ..
Thin Layer Chromatography:Article Title: Preparation of a 4′‐Thiouridine Building‐Block for Solid‐Phase Oligonucleotide Synthesis
Article Snippet: .. Ltd. India) Dichloromethane (anhydrous, dried over 4‐Å molecular sieves, Sigma‐Aldrich) meta‐ Chloroperoxybenzoic acid ( m ‐CPBA), ≤77% (Sigma‐Aldrich) Hexane, ≥95% (Thermo Fisher Scientific) Ethyl acetate (EtOAc), ≥99.5% (Sigma‐Aldrich) Nitrogen gas (passed through a Drierite ® drying column) Sodium bicarbonate (NaHCO 3 ), ≥99.7% (Sigma‐Aldrich) Magnesium sulfate (MgSO 4 ) (Thermo Fisher Scientific) Uracil, ≥99.0% (Sigma‐Aldrich) Hexamethyldisilazane (HMDS), ≥99% (anhydrous, Sigma‐Aldrich) Trimethylchlorosilane (TMSCl), 98% (Alfa Aesar) Acetonitrile (HPLC grade, anhydrous, dried over 3‐Å molecular sieves, Sigma‐Aldrich) N , N‐ Diisopropylethylamine (DIPEA), 99.5% (Sigma‐Aldrich) Trimethylsilyl trifluoromethanesulfonate (TMSOTf), 99% (Sigma‐Aldrich) Silica gel (Sigma‐Aldrich, technical grade, pore size 60 Å, 230 to 400 mesh particle size, 40 to 63 μm particle size) Tetrahydrofuran (THF, anhydrous, dried over 4‐Å molecular sieves, Thermo Fisher Scientific) Tetrabutylammonium fluoride (TBAF, 1 M in THF, Sigma‐Aldrich) DOWEX ® 50W X8 H + (Sigma‐Aldrich) N , N ‐Dimethylformamide (DMF) (Thermo Fisher Scientific, extra dry over molecular sieves, AcroSeal ® ) 2,6‐Lutidine, 98% (Sigma‐Aldrich) Di‐ tert ‐butylsilyl bis(trifluoromethanesulfonate) ( t Bu 2 Si(OTf) 2 ), 97% (Sigma‐Aldrich) tert ‐Butyldimethylsilyl trifluoromethanesulfonate (TBDMSOTf), 98% (Sigma‐Aldrich) 4,4′‐Dimethoxytrityl chloride (DMTrCl), recrystallized from hexane (Sigma‐Aldrich) Pyridine, 99.5% (Thermo Fisher Scientific, extra dry over molecular sieves, AcroSeal ® ) 2‐cyanoethyl di‐isopropylchlorophosphoramidite, 95% (Thermo Fisher Scientific) Round‐bottom flasks 25‐ml 50‐ml 100‐ml 500‐ml 500‐ml multinecked round bottom flask Magnetic stirrer bars Rubber septa Stirrer hot plates Balloons Vacuum/nitrogen manifold (Connected to vacuum pump, Welch CRVpro 4) Plastic Luer lock syringes 1‐ml 3‐ml 6‐ml 12‐ml 24‐ml Disposable Luer lock needles Separatory funnels 250‐ml 500‐ml Conical flasks 250‐ml 500‐ml Rotary evaporator Silica gel TLC plates (Merck) Condensers Chromatography columns UV lamp Falcon TM tubes Test tubes Cannula Eppendorfs Ice/NaCl bath ..
Chromatography:Article Title: Preparation of a 4′‐Thiouridine Building‐Block for Solid‐Phase Oligonucleotide Synthesis
Article Snippet: .. Ltd. India) Dichloromethane (anhydrous, dried over 4‐Å molecular sieves, Sigma‐Aldrich) meta‐ Chloroperoxybenzoic acid ( m ‐CPBA), ≤77% (Sigma‐Aldrich) Hexane, ≥95% (Thermo Fisher Scientific) Ethyl acetate (EtOAc), ≥99.5% (Sigma‐Aldrich) Nitrogen gas (passed through a Drierite ® drying column) Sodium bicarbonate (NaHCO 3 ), ≥99.7% (Sigma‐Aldrich) Magnesium sulfate (MgSO 4 ) (Thermo Fisher Scientific) Uracil, ≥99.0% (Sigma‐Aldrich) Hexamethyldisilazane (HMDS), ≥99% (anhydrous, Sigma‐Aldrich) Trimethylchlorosilane (TMSCl), 98% (Alfa Aesar) Acetonitrile (HPLC grade, anhydrous, dried over 3‐Å molecular sieves, Sigma‐Aldrich) N , N‐ Diisopropylethylamine (DIPEA), 99.5% (Sigma‐Aldrich) Trimethylsilyl trifluoromethanesulfonate (TMSOTf), 99% (Sigma‐Aldrich) Silica gel (Sigma‐Aldrich, technical grade, pore size 60 Å, 230 to 400 mesh particle size, 40 to 63 μm particle size) Tetrahydrofuran (THF, anhydrous, dried over 4‐Å molecular sieves, Thermo Fisher Scientific) Tetrabutylammonium fluoride (TBAF, 1 M in THF, Sigma‐Aldrich) DOWEX ® 50W X8 H + (Sigma‐Aldrich) N , N ‐Dimethylformamide (DMF) (Thermo Fisher Scientific, extra dry over molecular sieves, AcroSeal ® ) 2,6‐Lutidine, 98% (Sigma‐Aldrich) Di‐ tert ‐butylsilyl bis(trifluoromethanesulfonate) ( t Bu 2 Si(OTf) 2 ), 97% (Sigma‐Aldrich) tert ‐Butyldimethylsilyl trifluoromethanesulfonate (TBDMSOTf), 98% (Sigma‐Aldrich) 4,4′‐Dimethoxytrityl chloride (DMTrCl), recrystallized from hexane (Sigma‐Aldrich) Pyridine, 99.5% (Thermo Fisher Scientific, extra dry over molecular sieves, AcroSeal ® ) 2‐cyanoethyl di‐isopropylchlorophosphoramidite, 95% (Thermo Fisher Scientific) Round‐bottom flasks 25‐ml 50‐ml 100‐ml 500‐ml 500‐ml multinecked round bottom flask Magnetic stirrer bars Rubber septa Stirrer hot plates Balloons Vacuum/nitrogen manifold (Connected to vacuum pump, Welch CRVpro 4) Plastic Luer lock syringes 1‐ml 3‐ml 6‐ml 12‐ml 24‐ml Disposable Luer lock needles Separatory funnels 250‐ml 500‐ml Conical flasks 250‐ml 500‐ml Rotary evaporator Silica gel TLC plates (Merck) Condensers Chromatography columns UV lamp Falcon TM tubes Test tubes Cannula Eppendorfs Ice/NaCl bath ..
other:Article Title: Enhancement and recovery of photoluminescence and stability by multifunctional etching ligands treatment for perovskite nanocrystals
Article Snippet: Perovskite nanocrystals (PNCs) have recently become promising optoelectronic materials due to their excellent photophysical properties.. However, the highly dynamic binding state between ligands and the surface of PNCs has severely restricted their luminescent properties and stabilities.. In this work, 1,3-bisbenzyl-2-oxoimidazolidine-4,5-dicarboxylic acid (cycle acid, CA) is introduced as both an etchant and a ligand upon post-synthetic surface treatment of PNCs.
Article Title: Bright and durable scintillation from colloidal quantum shells
Article Snippet: These chemicals include anhydrous acetone (99 %, Amresco), cadmium oxide (CdO, 99.95%, MilliporeSigma), Anhydrous ethanol (99%, BeanTown Chemical), hexane (ACS grade, Thermo Scientific), 1-octadecene (ODE, technical grade, 90%, MiliporeSigma), Octane (98%, MiliporeSigma), 1-octanethiol (97%, Alfa Aesar), oleic acid (OA, technical grade, 90%, MiliporeSigma), oleylamine (OLAM, technical grade, 70%, MiliporeSigma), poly(butyl-co-isobutyl)methacrylate (Sigma, M W ~ 354000), Dioctylamine(DOA, 97%, MiliporeSigma), selenium powder (Se, 99.5%, 200 mesh, Thermo Scientific), sulfur powder (S, 99.999%, Thermo Scientific), toluene (99.8%, MiliporeSigma), and tri-n-octylphosphine (TOP, 97%, Strem Chemical).
Purification:Article Title: Bound Exciton Complexes in Near-Infrared Emitting Quantum Shells.
Article Snippet: .. The following chemicals were used as received without further purification or modification: anhydrous acetone (99%, Amresco), cadmium oxide (CdO, 99.95%, MilliporeSigma), Zinc acetate dihydrate(98%, Acros Organics) anhydrous ethanol (99%, BeanTown Chemical), hexane (ACS grade, Thermo Scientific), 1-octadecene (ODE, technical grade, 90%, MiliporeSigma), Octane (98%, MiliporeSigma), 1-octanethiol (97%, Alfa Aesar), oleic acid (OA, technical grade, 90%, MiliporeSigma), oleylamine (OLAM, technical grade, 70%, MiliporeSigma), Dioctylamine(DOA, 97%, MiliporeSigma), rhodamine 101 inner salt (R101, 94%, pure, Thermo Scientific), selenium powder (Se, 99.5%, 200 mesh, Thermo Scientific), sulfur powder (S, 99.999%, Thermo Scientific), toluene (99.8%, MiliporeSigma), and tir-n-octylphosphine (TOP, 97%, Strem Chemical). ..
Modification:Article Title: Bound Exciton Complexes in Near-Infrared Emitting Quantum Shells.
Article Snippet: .. The following chemicals were used as received without further purification or modification: anhydrous acetone (99%, Amresco), cadmium oxide (CdO, 99.95%, MilliporeSigma), Zinc acetate dihydrate(98%, Acros Organics) anhydrous ethanol (99%, BeanTown Chemical), hexane (ACS grade, Thermo Scientific), 1-octadecene (ODE, technical grade, 90%, MiliporeSigma), Octane (98%, MiliporeSigma), 1-octanethiol (97%, Alfa Aesar), oleic acid (OA, technical grade, 90%, MiliporeSigma), oleylamine (OLAM, technical grade, 70%, MiliporeSigma), Dioctylamine(DOA, 97%, MiliporeSigma), rhodamine 101 inner salt (R101, 94%, pure, Thermo Scientific), selenium powder (Se, 99.5%, 200 mesh, Thermo Scientific), sulfur powder (S, 99.999%, Thermo Scientific), toluene (99.8%, MiliporeSigma), and tir-n-octylphosphine (TOP, 97%, Strem Chemical). ..
|
Thermo Fisher is a verified supplier 
Thermo Fisher manufactures this product 