title: Template free synthesis of natural carbohydrates functionalised fluorescent silver nanoclusters.
abstract: Template-assisted synthesis is one of the most recognised techniques for fabrication of silver nanoclusters (AgNCs). However, this process is time consuming, toxic and expensive. In this study, the authors report a completely novel approach for the green and facile synthesis of AgNCs using Matricaria chamomilla, without any additional template. Fluorescent and colloidally stable AgNCs with average particle size of 2.4 nm were successfully produced. They found that carbohydrates from Matricaria chamomilla act as an ideal template to generate fluorescent AgNCs. Moreover, oxygen-bearing functional groups were validated to be the active groups for anchoring and reducing of Ag(+) ions. The novel carbohydrate coating method makes the prepared nanoclusters completely hydrophilic and stable in aqueous matrices.
authors.affiliation: Department of Pharmaceutical Biotechnology, School of Pharmacy and Pharmaceutical Sciences Research Center, Shiraz University of Medical Sciences, Shiraz, Iran.
authors.forename: Alireza
authors.initials: A
authors.lastname: Ebrahiminezhad
authors.affiliation: School of Engineering, Faculty of Science and Engineering, The University of Waikato, Hamilton, New Zealand.
authors.forename: Aydin
authors.initials: A
authors.lastname: Berenjian
authors.affiliation: Department of Pharmaceutical Biotechnology, School of Pharmacy and Pharmaceutical Sciences Research Center, Shiraz University of Medical Sciences, Shiraz, Iran. ghasemiy@sums.ac.ir.
authors.forename: Younes
authors.initials: Y
authors.lastname: Ghasemi
mesh_terms: D002241:Carbohydrates / Q000737:chemistry*; D005456:Fluorescent Dyes / Q000138:chemical synthesis* / Q000737:chemistry*; D055772:Green Chemistry Technology / Q000379:methods; D031168:Matricaria / Q000378:metabolism; D053768:Metal Nanoparticles / Q000737:chemistry*; D012834:Silver / Q000737:chemistry*
chemical_list: D002241:Carbohydrates; D005456:Fluorescent Dyes; D012834:Silver