Self-Assembled Honeycomb Networks of Gold Nanocrystals

Nano Letters

Volumn 1, Issue 11, 2001, Pages 595-600

  Stowell, Cynthia ^a   Korgel, Brian A ^a  

^a The University of Texas at Austin   (United States)

Author keywords

[No Author keywords available]

Indexed keywords

EID: 0000261445     PISSN: 15306984     EISSN: None     Source Type: Journal    
DOI: 10.1021/nl015601i     Document Type: Article

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30. A Cannon-Fenske viscometer was used to measure υ.
31. σ was measured using a ring tensiometer (Central Sceintific Co., Inc.) at 15.5 °C and 20 °C.
32. To calculate the thermal diffusivity of each concentration, the mass fraction of gold relative to capping ligand was determined. The volume of gold was determined using the density of gold, and the volume contribution of the capping ligand was ignored. A volumetric average thermal diffusivity was calculated using the values for pure gold and pure chloroform.
33. c = 2 at the onset of Marangoni convection. L was measured to be 4.3 μm. ΔT was measured experimentally by evaporating 3 μL of nanocrystal solution initially at 20 °C off of an Omega thermocouple.
34. 1/2 = 0.22 μm. Since L = 4.3 μm in the honeycomb arrays, the nanocrystals remain relatively localized during the final solvent evaporation.
35. 6), 480 μL of dodecanethiol, and 25 mL of toluene that was preheated to 75 °C. The solution was vigorously stirred at 75 °C for 2 h. The resulting solution was alternately centrifuged in chloroform and ethanol three times to remove excess thiol, uncapped particles, and reaction byproducts.