02016nas a2200253   4500008004100000022001400041245019700055210006900252260000800321300001100329490000800340520110300348653001801451653001901469653001201488653000901500653002501509653001601534100001301550700002001563700002001583700003101603856012801634       2020                        eng d  a0921-510700aTemperature assisted reorganization of silver nanoparticles in free-standing, flexible chitosan functionalized reduced graphene oxide thick films: A potential SERS probe for folic acid sensing0 aTemperature assisted reorganization of silver nanoparticles in f  cFEB  a1144540 v2523 a<p>Chitosan and silver functionalized free standing reduced graphene oxide (rGO) films were prepared using simple soak and dry strategy. Redistribution of silver aggregates on chitosan functionalized rGO films were observed by thermally annealing these films at 450 degrees C, in an inert atmosphere. The re-organization / redistribution of silver aggregates in the rGO films were studied using in-situ Raman scattering signals. The redistribution of silver particles occurs through melting of micron sized silver aggregates during annealing. The rearrangement of the micro-sized silver aggregates to spherical silver nanoparticle on chitosan functionalized rGO film, as a result of temperature was assisted through factors such as graphene surface ripple rearrangement and the denaturation of rGO surface interacting chitosan chains. These free-standing films with redistributed silver nanoparticles showed excellent surface enhanced Raman scattering (SERS) effect with enhanced Raman signals for folic acid sensing, showcasing its potentiality to be utilized as flexible SERS based sensors.</p>
10aFree-standing10agraphene oxide10asensing10aSERS10asilver nanoparticles10aThick-films1 aAsha, S.1 aAnanth, Nimrodh1 aJose, Sujin, P.1 aRajan, Michael, Anjello Jo  uhttps://library.ncl.res.in/content/temperature-assisted-reorganization-silver-nanoparticles-free-standing-flexible-chitosan