QMG is a group of water soluble CdSe/ZnS quantum dots with amphiphilic polymer and PEG coating. There is no any surface functional group on the surface of nanocrystals. The zeta potential of QMG is from -10mV to 0. The organic layers consist of a monolayer of octadecylamine, a monolayer of amphiphilic polymer and a monolayer of PEG. The thickness of the total organic layers is about 6 nm. The hydrodynamic size of the nanocrystals is about 12-14 nm larger than their inorganic core size measured by TEM.
The colloidal stability of QMG is exceptional high. It is stable in most buffer solutions in the pH range of 3-14.
Catalog No.
Quantum Yield1
FWHM2
Emission Peak
Emission Peak Tolerance
Amount3
Price(￥)
| QMG-530-02 |
>40% |
<25 nm |
530 nm |
+/- 10 nm |
2 nmol |
1400.00 |
|
| QMG-550-02 |
>40% |
<25 nm |
550 nm |
+/- 10 nm |
2 nmol |
1400.00 |
|
| QMG-580-02 |
>40% |
<25 nm |
580 nm |
+/- 10 nm |
2 nmol |
1400.00 |
|
| QMG-600-02 |
>40% |
<25 nm |
600 nm |
+/- 10 nm |
2 nmol |
1400.00 |
|
| QMG-620-02 |
>40% |
<25 nm |
620 nm |
+/- 10 nm |
2 nmol |
1400.00 |
|
1. Quantum Yield: measured using an integrating sphere
2. FWHM: Full Width of Half Maximum
3. Amount: measurement based on core molar extinction coefficient
[W. W. Yu. L. Qu, W. Guo. X. Peng, Chem. Mater.2003, 15 (14),2854-2860, corrected in volume 15, 2003]
