02170nas a2200217   4500008004100000022001400041245009500055210006900150260009500219300001200314490000800326520132600334653001901660653002301679653002001702653002801722653003001750100001801780700003601798856011801834       2006                        eng d  a0021-979700aOrganic dye molecules as reducing agent for the synthesis of electroactive gold nanoplates0 aOrganic dye molecules as reducing agent for the synthesis of ele  a525 B ST, STE 1900, SAN DIEGO, CA 92101-4495 USAbACADEMIC PRESS INC ELSEVIER SCIENCEcJUN  a679-6840 v2983 a<p>Highly crystalline, hexagonal and triangular nanoplates of gold are synthesized in high yield by a new wet chemical method using multifunctional molecules. Bismarck brown R (BBR) and Bismarck brown Y (BBY). This method involves a simple approach by keeping a mixture of aqueous HAuCl(4) solution and BBR/BBY solution in presence of poly(vinyl pyrrolidone) for 24 h. These nanostructures show unprecedented electrochemical properties exhibiting Surface confinement effect. The UV-visible (UV-vis) spectrum shows certain distinct features with absorptions at 300, 400,and 650 nm extending up to the near infrared region. Selected area electron diffraction patterns of these nanoparticles show highly oriented (111) crystal facets. X-ray diffraction analysis also confirms the Predominant orientation in the (111) crystal planes with lattice constant similar to 4.07 angstrom of face-centered-cubic (fcc) gold. X-ray photoelectron (XP) and Fourier transform infrared (FTIR) spectroscopic analysis shows the presence of a fraction of reducing molecules as surface passivating agent either in the unreacted molecular state or as a mixture of reacted and unreacted product which probably undergoes charge transfer with gold nanocrystals giving absorption at similar to 300 nm. (c) 2005 Elsevier Inc. All rights reserved.</p>10aBismarck brown10acyclic voltammetry10agold nanoplates10apoly(vinyl pyrrolidone)10asurface plasmon resonance1 aSharma, Jadab1 aVijayamohanan, Kunjukrishna, P.  uhttps://library.ncl.res.in/content/organic-dye-molecules-reducing-agent-synthesis-electroactive-gold-nanoplates-0