Synthesis And Characterization Of Ring Shaped Spermine Mediated Nanogold Assemblies At The Air Water interface

Divya Sachdev1, Shweta Gupta3,2, Veeresh Kumar3 , Sandeep Singh3 and Renu Pasricha4*

1National Institute of Food Technology,Entrepreneurship and Management, Sonipat, India

2Department of Chemistry, University of Delhi, Delhi 110007, India

3National Physical Laboratory, CSIR, Dr. K.S. Krishnan Road, New Delhi 110012, India

4National Centre for Biological Sciences, TIFR, Bangalore 560065, India

Adv. Mater. Lett., 2016, 7 (6), pp 449-455

DOI: 10.5185/amlett.2016.6036

Publication Date (Web): May 30, 2016

E-mail: renu1505@gmail.com

Abstract


Surface tension mediated U-shaped interlinked diammine network (spermine) assembled at the air-water interface, when interacted with aqueous functionalized gold nanoparticles (AuNPs), form ring like nanogold structures. These electrostatic force guided self-assembies of the ligand diammine with gold provides a facile route for control on the nanostructure formation while portraying double linkage ability of the diammine (here spermine). Pressure-area isotherm of controlled multilayer formation of spermine linked gold NPs (spermine-AuNPs) were studied and characterized by UV-vis spectroscopy, Fourier transform infrared spectroscopy and Transmission electron microscopy (TEM). The TEM micrographs clearly elucidate the formation of ring like networks of gold NPs under the influence of spermine. Furthermore we believe that these spermine-AuNPs will surely have supportive role as a bio-diagnostic material for ultra-sensitive biological detection and pave way for a novel route for assembly fabrication. 

Keywords

Air-water interface, interlinked networks, gold nanoparticle, pressure-area isotherm, spermine

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