In this paper, inorganic mercury (Hg2 + ion) interaction with different shaped silver nanoparticles (silver nanorods (SNRs) and silver nanotriangles (SNTs)) at pH- 5 was investigated. We observed that the interaction of different concentrations of Hg2 + ions with citrate-stabilized SNRs and SNTs induced significant changes in the shape and absorption spectra of the nanoparticles. In particular, we correlated the position and shape of LSPR peaks to the ability of the Hg2 + ions to specifically interact with SNR and SNT surface. The change in morphology of SNRs and SNTs upon interaction with Hg2 + ions was studied through TEM analysis. The limit of detection of Hg2 + ions by SNRs and SNTs was observed to be 0.26 and 0.3 nM in the range of 1 to 50 nM concentrations of Hg2 + ions. The selectivity of the probe for both the types of nanoparticles was also studied towards Hg2 + ions. © 2017 Elsevier B.V.

Chandra Sekaran N

Centre for Nanobiotechnology

Vellore Campus

Amitava Mukherjee

Karthiga D

Vellore Institute of Technology (VIT) is a private university located in&nbsp;Tamil Nadu, India. Founded in 1984, as Vellore Engineering College, the institution offers 20 undergraduate, 34 postgraduate, four integrated and four research programs. It has campuses in Vellore, Amravati, Bhopal and Chennai.

VIT is one of the top ranked private universities in India according to NIRF, THE and QS Rankings.&nbsp;Govt. of India has recognized&nbsp;VIT, Vellore as an&nbsp;Institution of Eminence. This has allowed VIT to take independent quality initiatives and move up in world ranking.

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VIT University

Journal of Molecular Liquids

Due to the increasing usage of silver nanoparticles in biomedical applications, it becomes important to understand their interaction with biomolecules such as protein. In the present work, we have investigated the interaction of bovine serum albumin (BSA) with silver nanorods (SNRs) using different spectroscopic techniques. The interaction between BSA and SNRs can happen through non-covalent interactions like electrostatic and hydrophobic forces. Upon the interaction of SNRs with various concentrations of BSA, a small red-shift was found in the localized surface plasmon resonance (LSPR) peak of SNRs from UV–visible spectroscopic studies, indicating the adsorption of BSA on the surface of SNRs. The UV–visible absorption spectral studies confirmed the formation of a ground-state BSA-conjugated SNR system. The number of binding sites (n = 1.86) and binding constant (K = 8.719 × 104 L·mol− 1) were obtained to check the strength of conjugation of BSA in presence of different concentrations of SNRs from fluorescence quenching analysis. Further, DLS and zeta potential analyses proved significant binding of BSA towards the SNRs. The secondary structural changes in BSA in the presence of SNRs were obtained using circular dichroism (CD) spectroscopy and Fourier transform infrared spectroscopy (FT-IR). The unfolding behavior of BSA and BSA-conjugated SNR complex were established using the surfactant, sodium dodecyl sulfate (SDS). Finally, the influence of SNRs in the hydrolysis of BSA was investigated by assaying the esterase activity. The esterase activity of BSA was determined by the hydrolysis of p-nitrophenyl acetate (p-NPA) to 4-nitrophenol. © 2017 Elsevier B.V.

Spectroscopic studies on the interactions of bovine serum albumin in presence of silver nanorods

A method for the sensitive and selective determination of Hg2+ was developed based on the aggregation and re-aggregation of silver nanorods (SNRs) in the presence of dithiothreitol.

Analytical Methods

Determination of mercury(ii) ions in aqueous solution using silver nanorods as a probe

Biblische Zeitschrift

Bericht

Food Chemistry

A silver nanorod resonance rayleigh scattering-energy transfer analytical platform for trace tea polyphenols

Scientific Reports

A new silver nanorod SPR probe for detection of trace benzoyl peroxide

Comparative studies on interaction of inorganic mercury with silver nanorods and nanotriangles

Journal	Data powered by TypesetJournal of Molecular Liquids
Publisher	Data powered by TypesetElsevier BV
ISSN	0167-7322
Open Access	0