@article {44529,
	title = {Surface colonized silver nano particles over chitosan poly-electrolyte micro-spheres and their multi-functional behavior},
	journal = {Materials Research Express},
	volume = {5},
	year = {2018},
	month = {FEB },
	pages = { 025032},
	type = {Journal Article},
	abstract = {hitosan/tripolyphosphate polyelectrolyte (TPP) microspheres, decorated and surface functionalized with silver nanoparticles (NPs) of average diameter of 15 nm, were synthesized following a simple two-step procedure. These Ag NP-functionalized polyelectrolyte microspheres (Ag-CSPMs) are found to be biocompatible and enhancing the reactive oxygen species in curcumin with excellent anti-bacterial activity for selected Gram-positive and negative bacterial strains, making them much attractive relative to bare surface counterparts; the well-stabilized silver NPs do not form any agglomerations on the surface of the chitosan microspheres. They also show excellent cytotoxic behavior towards MCF7 cell lines, showing a half-maximal inhibitory concentration (IC50) of 32 μg ml-1. Therefore, Ag-CSPMs exhibit multi-functional ability having potential towards theranostics applications.},
	keywords = {antibacterial properties, Chitosan, Cytotoxicity, reactive oxygen species, silver nanoparticles, theranostics},
	issn = {20531591},
	doi = { 10.1088/2053-1591/aaa3c6},
	author = {Prakash, B.},
	editor = {Asha, S.}
}
@article {46980,
	title = {Temperature assisted reorganization of silver nanoparticles in free-standing, flexible chitosan functionalized reduced graphene oxide thick films: A potential SERS probe for folic acid sensing},
	journal = {Materials Science and Engineering B-Advanced Functional Solid-State Materials},
	volume = {252},
	year = {2020},
	month = {FEB},
	pages = {114454},
	type = {Article},
	abstract = {<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>
},
	keywords = {Free-standing, graphene oxide, sensing, SERS, silver nanoparticles, Thick-films},
	issn = {0921-5107},
	doi = {10.1016/j.mseb.2019.114454},
	author = {Asha, S. and Ananth, A. Nimrodh and Jose, Sujin P. and Rajan, Michael Anjello Jothi}
}
