Dr. Amit Manna
@inrc-india.org
Institute of Nature Research and Conservation
Physicist
RESEARCH, TEACHING, or OTHER INTERESTS
Electronic, Optical and Magnetic Materials, Biomaterials, Surfaces, Coatings and Films, Materials Science
Scopus Publications
Scholar Citations
Scholar h-index
Scopus Publications
Amit Manna, Mihir Ranjan Bera, Tilak Narayan Ghosh, Satyajit Saha, and Subhas Chandra Saha
Springer Science and Business Media LLC
Vanshika Sharma, Meman Sahu, Amit Kumar Manna, Dinesh De, and Goutam Kumar Patra
Royal Society of Chemistry (RSC)
A quinazolin based novel Schiff base chemosensor (L) has been reported for colorimetric detection of Ni2+ ion and fluorescent-colorimetric detection of Ni2+ and Zn2+ ions with minimum detection limits of 7.9 nM and 1.7 nM respectively.
Meman Sahu, Amit Kumar Manna, and Goutam Kumar Patra
Royal Society of Chemistry (RSC)
A simple fluorescent colorimetric chemosensor H2L for rapid detection of Cu2+ has been developed. The LOD value of H2L towards Cu2+ was calculated to be 3.8 × 10−8 M. The interactions between L and Cu2+ were studied by Job's plot, ESI-MS, DFT calculations and single-crystal structure determination.
Meman Sahu, Amit Kumar Manna, Kalyani Rout, Dipti Nikunj, Bhaskar Sharma, and Goutam K. Patra
Elsevier BV
Meman Sahu, Amit Kumar Manna, and Goutam K. Patra
Elsevier BV
Anindita De, Preeti Jain, Amit Kumar Manna, Vivek Srivastava, and Riya Das
Informa UK Limited
Anindita De, Ankita Kumari, Preeti Jain, Amit Kumar Manna, and Gaurab Bhattacharjee
Informa UK Limited
Abstract In this study, silver and gold nanoparticles were synthesized by using Syzygium aromaticum bud extract and reaction conditions were optimized. SPR band for silver nanoparticle (CAgNP) and for gold nanoparticle (CAuNP) was observed at 427 nm and 530 nm, respectively. The presence of phytochemical on the nanoparticle as capping agent in confirmed by Fourier transform infrared (FT-IR). Energy dispersive X-ray spectroscopy confirms the elemental composition of CAgNP and CAuNP. Zeta Potential measurements revealed that the surfaces of the nanoparticles were negatively charged. Transmission electron microscopy and dynamic light scattering experiment indicated that particles were spherical and moderately dispersed. The CAgNPs have shown sensitivity to detect Hg(II) whereas CAuNPs could detect Cr(III) and Pb(II) ions in aqueous solution. The metal ion detection was monitored by UV–Visible spectroscopy. The minimum detection limit for Hg(II) by using CAgNPs is 10 µM and that of Cr(III) and Pb(II) is 0.25 mM and 1 mM, respectively. Graphical Abstract
Meman Sahu, Amit Kumar Manna, Shubhamoy Chowdhury, and Goutam Kumar Patra
Royal Society of Chemistry (RSC)
A novel colorimetric chemosensor L has been developed for the detection of Ni2+ and Cu2+ ions. The obtained L–Cu2+ complex can be used as a new cascade fluorescent-colorimetric sensor for the nanomolar detection of CN− ions. This chemosensor has practical application.
Amit Kumar Manna, Meman Sahu, Kalyani Rout, Uttam K. Das, and Goutam K. Patra
Elsevier BV
Amit Kumar Manna, Shubhamoy Chowdhury, and Goutam K. Patra
Royal Society of Chemistry (RSC)
A phenyl thiadiazole based receptor (L) has been presented for fluorescent colorimetric detection of Al3+ ion with very low detection limit in aqueous medium. The probe L can be applied for logic gate formation, recovery of contaminated water samples and smart-phone based analysis.
Rukmani Chandra, Meman Sahu, Amit Kumar Manna, Kalyani Rout, Shubhamoy Chowdhury, and Goutam K. Patra
Elsevier BV
Preeti Jain, Ankita Kumari, Amit Kumar Manna, and Anindita De
Elsevier BV
Rukhmani Chandra, Amit Kumar Manna, Meman Sahu, Kalyani Rout, and Goutam K. Patra
Elsevier BV
Rukmani Chandra, Amal Dutta, Amit Kumar Manna, Kalyani Rout, Jahangir Mondal, and Goutam K. Patra
Elsevier BV
Kalyani Rout, Amit Kumar Manna, Meman Sahu, and Goutam Kumar Patra
Elsevier BV
Kalyani Rout, Amit Kumar Manna, Meman Sahu, Jahangir Mondal, Sunil K. Singh, and Goutam K. Patra
Royal Society of Chemistry (RSC)
A novel triazole-based bis Schiff base colorimetric and fluorescent chemosensor (L) has been designed, synthesized and characterized. The chemo-sensor L shows its application potential in the detection of Cu2+ and Pb2+ in living cells and building molecular logic gate.
Amit Kumar Manna, Shubhamoy Chowdhury, and Goutam K. Patra
Royal Society of Chemistry (RSC)
A novel hydrazide-based optical sensor for Ni2+ ions was designed, which can be applied for recovery of contaminated water samples, smart phone-based analysis and live cell imaging.
Amit Kumar Manna, Kalyani Rout, Shubhamoy Chowdhury, and Goutam K. Patra
Springer Science and Business Media LLC
In this paper, a novel flexible Schiff base chemosensor N -(2-hydroxy-3-methoxybenzylidene)-2-(benz-amido)benzohydrazide ( L ) has been designed, synthesised and characterised by ^1H-NMR, IR spectroscopy, ESI-MS spectrometry and single crystal XRD analysis. A significant fluorescence enhancement of L was observed only in the presence of Ni^2+ ions with a detection limit of 3.64 uM whereas Cu^2+ induced fluorescence quenching, although both the metals showed colorimetric responses in methanol-Tris-HCl buffer (10 mM, pH 7.2) solution (1:1, v/v). The single crystal structure of L -Cu^2+ has also been determined. No major interference by the other effective background cations (Fe^3+,Fe^2+,Co^2+,Zn^2+,Cd^2+, Hg^2+,Pb^2+,Cr^3+,Ag^+,Al^3+ and Mn^2+) was observed even at a higher concentration of analytes. The experimental results were further supported by DFT studies. The chemosensor L can be applied to the formation of binary logical devices, recovery of contaminated water samples and living intracellular media.
Amit Kumar Manna, Jahangir Mondal, Kalyani Rout, and Goutam Kumar Patra
Elsevier BV
Amit Kumar Manna, Jahangir Mondal, Kalyani Rout, and Goutam K. Patra
Elsevier BV
Jahangir Mondal, Amit K. Manna, Kalyani Rout, Sunil K. Singh, Jnan P. Naskar, and Goutam K. Patra
Informa UK Limited
ABSTRACT A new fluorescent-colorimetric chemosensor L has been synthesised by Schiff base condensation reaction between 1,8-diaminooctane and 4-nitro-benzaldehyde in very good yields. Its photo-luminescent properties and selective detection properties for hydrazine have been examined. The synthesised chemosensor exhibited highly selective fluorescence on-off response for hydrazine amongst a wide range of different metal cations, anions and amines, along with the bare eye colour change from colourless to yellow based on intermolecular hydrogen-bond interaction. The limit of detection of the chemosensor L was estimated as 9.77 × 10−8 M or 3.12 × 10−6 g L−1 for hydrazine which is extremely below the limit set by the World Health Organization (WHO) and the binding stoichiometry was proposed to be 1 : 2 based on 1H NMR spectroscopic techniques and the Job’s plot analysis. The proposed sensing mechanism is the hydrogen-bonding interaction which has further been established by Density Functional Theory (Functional Density Theory (DFT)) studies. This recognition feature of sensor L makes it an efficient chemosensor for hydrazine detection in different water samples.
Amit Kumar Manna, Jahangir Mondal, Rukmani Chandra, Kalyani Rout, and Goutam Kumar Patra
Royal Society of Chemistry (RSC)
A fluorescent-colorimetricazodye basedbis-Schiff base chemosensor,L, has been developed.Lcan selectively detect S2−through a color change from yellow to orange in perfect aqueous solution by deprotonation mechanism.