Journal
CARBOHYDRATE RESEARCH
Volume 341, Issue 12, Pages 2012-2018Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.carres.2006.04.042
Keywords
amylose-iodine complex; green chemistry; photoluminescence; silver nanoparticles; soluble starch
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Stable silver nanoparticles have been synthesized by using soluble starch as both the reducing and stabilizing agents; this reaction was carried out in an autoclave at 15 psi, 121 degrees C for 5 min. Nanoparticles thus prepared are found to be stable in aqueous solution over a period of three months at room temperature (similar to 25 degrees C). The size of these nanoparticles was found to be in the range of 10-34 nm as analyzed using transmission electron micrographs. The X-ray diffraction analysis revealed the face-centred cubic (fcc) geometry of silver nanoparticles. lodometric titration confirmed the entrapment of silver nanoparticles inside the helical amylose chain. These silver nanoparticles embedded in soluble starch produced a typical emission peak at 553 nm when excited at 380 nm. The use of environmentally benign and renewable materials like soluble starch offers numerous benefits of eco-friendliness and compatibility for pharmaceutical and biomedical applications. (c) 2006 Elsevier Ltd. All rights reserved.
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