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Carboxyl QSH is a group of water soluble alloy CdSSe/ZnS or CdSe/ZnS core/shell quantum dots with amphiphilic polymer coating. Their reactive group is carboxylic acid. The zeta potential of QSH is from -30mV to -50mV. Their organic layers consist of a monolayer of oleic acid/octadecylamine and a monolayer of amphiphilic polymer. The thickness of the total organic layers is about 4 nm. The hydrodynamic size of the QDs is about 8-10 nm larger than their inorganic core size measured by TEM. QSH is very stable in most buffer solutions in the pH range of 5-10 and can survive the autoclaving (121°C for 30 min) and lyophilization processes.QYH is a group of water soluble alloy CdSSe/ZnS or CdSe/ZnS core/shell quantum dots with amphiphilic polymer coating in lyophilized solid form. QYH can be reconstituted in DI water or DMSO to any desired concentration so you can do your reaction in the solvent system of your choice. The reactive group of QYH is carboxylic acid. The zeta potential of QYH is from -30mV to -50mV. Their organic layers consist of a monolayer of oleic acid/octadecylamine and a monolayer of amphiphilic polymer. The thickness of the total organic layers is about 4 nm. The hydrodynamic size of the QDs is about 8-10 nm larger than their inorganic core size measured by TEM. Reconstituted QYH is very stable in most buffer solutions in the pH range of 5-10.Product Name Description Pricing QSH-600 CdSSe/ZnS Quantum Dots w/Carboxylic Acid, 600 nm Pricing QYH-450 CdSSe/ZnS Quantum Dots w/Carboxylic Acid, 450 nm Pricing QYH-600 CdSSe/ZnS Quantum Dots w/Carboxylic Acid, 600 nm Pricing QSH-525 CdSSe/ZnS Quantum Dots w/Carboxylic Acid, 525 nm Pricing QSH-645 CdSSe/ZnS Quantum Dots w/Carboxylic Acid, 645 nm Pricing QYH-540 CdSSe/ZnS Quantum Dots w/Carboxylic Acid, 540 nm Pricing QYH-665 CdSSe/ZnS Quantum Dots w/Carboxylic Acid, 665 nm Pricing QSH-490 CdSSe/ZnS Quantum Dots w/Carboxylic Acid, 490 nm Pricing QSH-580 CdSSe/ZnS Quantum Dots w/Carboxylic Acid, 580 nm Pricing QYH-490 CdSSe/ZnS Quantum Dots w/Carboxylic Acid, 490 nm Pricing QYH-620 CdSSe/ZnS Quantum Dots w/Carboxylic Acid, 620 nm Pricing QSH-540 CdSSe/ZnS Quantum Dots w/Carboxylic Acid, 540 nm Pricing QSH-665 CdSSe/ZnS Quantum Dots w/Carboxylic Acid, 665 nm Pricing QYH-580 CdSSe/ZnS Quantum Dots w/Carboxylic Acid, 580 nm Pricing QSH-450 CdSSe/ZnS Quantum Dots w/Carboxylic Acid, 450 nm Pricing QSH-620 CdSSe/ZnS Quantum Dots w/Carboxylic Acid, 620 nm Pricing QYH-525 CdSSe/ZnS Quantum Dots w/Carboxylic Acid, 525 nm Pricing QYH-645 CdSSe/ZnS Quantum Dots w/Carboxylic Acid, 645 nm Pricing