growth of nanocrystals and thin films at the water–oil interface by g. l. stansfield, p. v....
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Growth of nanocrystals and thin films at the water–oil interface
by G. L. Stansfield, P. V. Vanitha, H. M. Johnston, D. Fan, H. AlQahtani, L. Hague, M. Grell, and P. John Thomas
Philosophical Transactions AVolume 368(1927):4313-4330
September 28, 2010
©2010 by The Royal Society
The square wave generator circuit used for constructing the amine sensor.
G. L. Stansfield et al. Phil. Trans. R. Soc. A 2010;368:4313-4330
©2010 by The Royal Society
TEM images of CdS nanocrystals synthesized using 30 ml of 33.3 mM aqueous thioacetamide and 30 ml of 0.5 M toluene solution of Cd(S2CNEt2)2 containing 4.2 ml octylamine at 35°C for 15
h.
G. L. Stansfield et al. Phil. Trans. R. Soc. A 2010;368:4313-4330
©2010 by The Royal Society
(a) Absorption spectra of aliquots drawn at different times from CdS nanocrystals grown at 35°C, employing 30 ml of 33.3 mM aqueous thioacetamide and 30 ml of 0.5 M toluene solution of
Cd(S2CNEt2)2 containing 4.2 ml octylamine.
G. L. Stansfield et al. Phil. Trans. R. Soc. A 2010;368:4313-4330
©2010 by The Royal Society
Emission from aliquots of CdS nanocrystals grown for different times employing 30 ml of 33.3 mM aqueous thioacetamide and 30 ml of 0.5 M toluene solution of Cd(S2CNEt2)2 containing 4.2
ml of octylamine.
G. L. Stansfield et al. Phil. Trans. R. Soc. A 2010;368:4313-4330
©2010 by The Royal Society
The film on the left is a nanocrystalline film of silver obtained using Ag(PPh3)Cl in toluene (1.5 mM) atop aqueous sodium hydroxide (6.25 mM).
G. L. Stansfield et al. Phil. Trans. R. Soc. A 2010;368:4313-4330
©2010 by The Royal Society
G. L. Stansfield et al. Phil. Trans. R. Soc. A 2010;368:4313-4330
©2010 by The Royal Society
SEM images show uniform and continuous nanocrystalline films of gold which span many millimetres.
G. L. Stansfield et al. Phil. Trans. R. Soc. A 2010;368:4313-4330
©2010 by The Royal Society
TEM image showing aggregation of spherical Au nanocrystals to form clusters.
G. L. Stansfield et al. Phil. Trans. R. Soc. A 2010;368:4313-4330
©2010 by The Royal Society
Powder X-ray diffraction pattern for a nanocrystalline film of gold prepared at 50°C over 180 min.
G. L. Stansfield et al. Phil. Trans. R. Soc. A 2010;368:4313-4330
©2010 by The Royal Society
Plot showing the variation of resistance with temperature for interfacial films of Au nanocrystals prepared at temperatures indicated in the graph.
G. L. Stansfield et al. Phil. Trans. R. Soc. A 2010;368:4313-4330
©2010 by The Royal Society
Response of the amine sensor to amine vapours of different concentrations.
G. L. Stansfield et al. Phil. Trans. R. Soc. A 2010;368:4313-4330
©2010 by The Royal Society
SEM images of nanocrystalline films of silver obtained at 50°C over 180 min.
G. L. Stansfield et al. Phil. Trans. R. Soc. A 2010;368:4313-4330
©2010 by The Royal Society
Powder X-ray diffraction pattern for a nanocrystalline film of silver showing broad peaks, which are characteristic of nanocrystals.
G. L. Stansfield et al. Phil. Trans. R. Soc. A 2010;368:4313-4330
©2010 by The Royal Society
The graph shows the variation in resistance of the nanocrystalline Ag film with temperature.
G. L. Stansfield et al. Phil. Trans. R. Soc. A 2010;368:4313-4330
©2010 by The Royal Society