01728nas a2200181   4500008004100000022001400041245015700055210006900212260007100281300001200352490000700364520098500371100002001356700001201376700001701388700001501405856012601420       2005                        eng d  a0897-475600aControlling the optical properties of lemongrass extract synthesized gold nanotriangles and potential application in infrared-absorbing optical coatings0 aControlling the optical properties of lemongrass extract synthes  a1155 16TH ST, NW, WASHINGTON, DC 20036 USAbAMER CHEMICAL SOCcFEB  a566-5720 v173 a<p>Anisotropic metal nanoparticles have distinct optical behavior when compared with their spherical counterparts. In this report, we demonstrate a simple method involving the reduction of aqueous gold ions by the extract of the lemongrass plant leading to the formation of gold nanotriangles with interesting absorption in the near-infrared (NIR) region of the electromagnetic spectrum. We show that, by simple variation of the experimental conditions, it is possible to vary the size of the gold nanotriangles and, thus, to tune the absorbance of flat gold nanoparticles in the NIR region. The NIR absorption of the gold nanotriangles is expected to be of application in hyperthermia of cancer cells and in IR-absorbing optical coatings. We show that the lemongrass extract synthesized gold nanotriangles can be easily cast in the form of films on glass substrates and that these films are highly efficient in absorbing IR radiation for potential architectural applications.</p>1 aShankar, S., S.1 aRai, A.1 aAhmad, Absar1 aSastry, M.  uhttps://library.ncl.res.in/content/controlling-optical-properties-lemongrass-extract-synthesized-gold-nanotriangles-and-0