User:Madeleine Y. Bee/Notebook/Single Molecule Fluorescence/2013/07/29

From OpenWetWare

< User:Madeleine Y. Bee | Notebook | Single Molecule Fluorescence | 2013 | 07(Difference between revisions)
Jump to: navigation, search
(July 29, 2013)
Current revision (12:33, 29 July 2013) (view source)
(July 29, 2013)

Current revision

Absorbance Measurements Main project page
Previous entry      Next entry

July 29, 2013

Absorbance Data: AuNPs@SiO2

Silica-coated AuNPs made with MHA dissolved in water (heated to 130C in order for MHA to dissolve) vs. MHA dissolved in isopropanol (not heated; MHA soluble in organic solvents).


Spectra for silica-coated AuNPs made with MHA dissolved in water is consistent with spectra found in the literature. The noticeable shift towards the right in the spectra for silica-coated AuNPs made with MHA dissolved in isopropanol is indicative of aggregation. Additionally, the AuNPs-MHA in isopropanol solution was a deep purple color, also consistent with aggregation, while the AuNPs-MHA in water was the characteristic pink color of gold nanoparticles in solution.

For NIST Tomorrow

  • 9.65nm, 23.5nM AuNPs
  • 9.65nm, 4.7nM AuNPs with MHA (in water)
  • AuNPs@SiO2- MHA in water
    • 5uL
    • 4uL
    • 3uL
    • 2uL
    • 1uL

Personal tools