3-Aminopropyltrimethoxysilane Mediated Controlled Synthesis of Functional Noble Metal Nanoparticles and Its Multi-Metall
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MRS Advances © 2018 Materials Research Society DOI: 10.1557/adv.2018.93
3-Aminopropyltrimethoxysilane Mediated Controlled Synthesis of Functional Noble Metal Nanoparticles and Its Multi-Metallic Analogues in the Presence of Small Organic Reducing Agents for Selective Application Prem C. Pandey1 and Govind Pandey2 1 Department of Chemistry, Indian Institute of Technology (Banaras Hindu University), Varanasi-221005, India
2
BRD Medical College, Gorakhpur-273013, India
ABSTRACT
Synthesis of functional noble metal nanoparticles (AuNPs, AgNPs, and PdNPs) and its multimetallic analogues have received greater attentions for selective applications. The selective applications of the these nanoparticles essentially requires the processability of as synthesized nanoparticles in the medium of desired polarity index that manifest the potential exploration of nanomaterial based design in targeted area. The use of conventional reducing and stabilizing agents during routine synthesis of such nanoparticles are not suitable with the system of practical significance and require additional reagents that limit the optimum activity of nanomaterial in targeted design. According there is a challenging issue in the synthesis of noble metal nanoparticles that allow the controlled synthesis of such nanoparticles involving same starting material with option to control the processability of as generated nanomaterial in the system of desired polarity index. The present report is focused on such challenging issues. We have found that 3-aminopropyltrimethoxysilane (3-APTMS) capped noble metal cations can be precisely converted into respective monometallic, bimetallic and trimetallic analogues and can be made processable in water at one end having controlled option to reversed the processability of the same in the toluene as a function of small organic reducing agents. The organic reducing agents not only convert 3-APTMScapped noble cations into respective nanoparticles but also control the processability of the as generated nanoparticles in the systems of desired polarity index. The similar process also allows the synthesis of function bimetallic and tri-metallic nanoparticles. The role of cyclohexanone, formaldehyde and acetone in the presence of 3-APTMS is reported.
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INTRODUCTION Nanoparticles (NPs) have drawn the attention of scientists and engineers because of their exciting potentials in the development of new nano-scaled technologies and products in the chemical, electronics, and biotechnology industries [1]. Potential applications include the production of advanced electronic [2], optoelectronic devices [3] and biosensors [4]. Typically the synthesis of nanoparticles require a reducing agent that allow the reduction of targeted metal ions into respective nanoparticles followed by stabilization of as generated n
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