Please use this identifier to cite or link to this item:
|Title:||Chiral modification of metal nanoparticle surfaces||Authors:||NGUYEN NGOC TU||Keywords:||Chiral, metal nanoparticles, vibrational circular dichroism, xanthate, menthol, perillyl alcohol||Issue Date:||30-Jul-2009||Citation:||NGUYEN NGOC TU (2009-07-30). Chiral modification of metal nanoparticle surfaces. ScholarBank@NUS Repository.||Abstract:||The aim of this project is to introduce chirality onto surfaces of transition metal nanoparticles. Chirally modified metal nanoparticles were synthesized by two methods: i) a one-step method involving pre-preparation of chiral potassium xanthates and use of these xanthates for synthesis of gold and silver nanoparticles; ii) a two-step method related to esterification of chiral alcohols with MUA-capped gold nanoparticles and chiral phosphate with MUO-capped gold nanoparticles. Xanthates were found to play the role as a good capping agent and can be used as a contaminant-free substitute for both alkylthiol and TOAB in the conventional Brust-Schiffrin synthesis of metal nanoparticles. Esterification reactions of chiral alcohols with MUA-capped gold nanoparticles and chiral phosphates with MUO-capped gold nanoparticles were demonstrated to be conducted under mild conditions by utilizing BOP and triphenylphosphine-tetrachloromethane as catalysts. Vibrational circular dichroism spectra of L-menthylxanthate gold and silver nanoparticles were predicted by DFT computations.||URI:||http://scholarbank.nus.edu.sg/handle/10635/16841|
|Appears in Collections:||Master's Theses (Open)|
Show full item record
Files in This Item:
|NguyenTN.pdf||9.36 MB||Adobe PDF|
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.