Vinod Kumar

J.C. Bose University of Science & Technology, YMCA

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Siddharth Pandey

Indian Institute of Technology Delhi

Gaurav Khandelwal

University of Glasgow

R. G. Bhirud

Reliance Industries (India)

Gary A. Baker

University of Missouri

Narsingh R. Nirala

Agricultural Research Organization

Kamalakanta Behera

University of Allahabad

Sima Umrao

Indian Institute of Science Bangalore

Monalisa Mukherjee

Amity University

Preeti Kasana

J.C. Bose University of Science & Technology, YMCA

Piyali Goon

Unilever (United Kingdom)

Cooperative Institutions

University of Delhi

Amity University

Banaras Hindu University

Indian Institute of Technology Indore

Indian Institute of Technology Delhi

Ben-Gurion University of the Negev

University of Manchester

Council of Scientific and Industrial Research

Shoolini University

Maharshi Dayanand University

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Waste Water Treatment Using Piezoelectric Materials: A Review on Piezo-photocatalysis

Topics in Catalysis (2024)

Karambir Singh Ritesh Verma Ankush Chauhan Rohit Jasrotia Shobhit Saini

10.1007/s11244-024-01966-0

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Citations (8)

Fluorescence Spectroscopic Studies on Comicellization of Anionic Surfactants

Journal of Colloid and Interface Science (1993)

Naresh K. Nayyar S. Jerome Das R. G. Bhirud K. S. Narayan Arya Singh

10.1006/jcis.1993.1425

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Citations (11)

Catalytically Active Enzyme Mimetic Nanomaterials and Their Role in Biosensing

Narsingh R. Nirala Sima Umrao Gaurav Khandelwal Vinod Kumar

This chapter contains sections titled: Introduction Different Types of Catalytically Active Enzyme Mimetic Nanomaterials Applications of Catalytically Active Nanomaterials in Biosensing

Nanomaterials

10.1002/9781119370383.ch12

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Citations (0)

Organic–Inorganic Porphyrinoid Frameworks for Biomolecule Sensing

ACS Sensors (2023)

Smriti Arora Ritika Nagpal Meenakshi Gusain Balram Singh Yuanwei Pan

Porphyrinoids and their analogous compounds play an important role in biosensing applications on account of their unique and versatile catalytic, coordination, photophysical, and electrochemical properties. Their remarkable arrays of properties can be finely tuned by synthetically modifying the porphyrinoid ring and varying the various structural parameters such as peripheral functionalization, metal coordination, and covalent or physical conjugation with other organic or inorganic scaffolds such as nanoparticles, metal–organic frameworks, and polymers. Porphyrinoids and their organic–inorganic conjugates are not only used as responsive materials but also utilized for the immobilization and embedding of biomolecules for applications in wearable devices, fast sensing devices, and other functional materials. The present review delineates the impact of different porphyrinoid conjugates on their physicochemical properties and their specificity as biosensors in a range of applications. The newest porphyrinoid types and their synthesis, modification, and functionalization are presented along with their advantages and performance improvements.

Biomolecule

Surface Modification

10.1021/acssensors.2c02408

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Citations (7)

Ionic liquid induced removal of Rhodamine B from water

Journal of Molecular Liquids (2020)

Vinod Kumar Manjeet Singh Kamalakanta Behera Siddharth Pandey

Rhodamine B

Rhodamine

Absorbance

Tetrafluoroborate

C4mim

Imide

10.1016/j.molliq.2020.114195

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Citations (25)

Sigmatropic Rearrangements

Elsevier eBooks (2015)

Sunil Kumar Vinod Kumar Shiv P. Singh

10.1016/b978-0-12-803640-2.00003-8

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Citations (3)

A Comprehensive Review of Developments of Accelerator Driven Subcritical Systems and Future Requirements

Vinod Kumar Karel Katovský

Several aspects related to ADSS development such as present status, issues like interrupted beam supply, beam window or windowless system for Pb-Bi eutectic as target coolant, neutron activation and measurement of cross sections that are not available from any other source and development of radiation resistant materials are discussed in a comprehensive way. The text may help in identification of future studies related to the ADSS technology. Some of the results presented here may become basis of our future collaborative programs.

Identification

10.1109/epe51172.2020.9269179

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Citations (4)

Graphene–Metal Modified Electrochemical Sensors

Elsevier eBooks (2018)

Gaurav Khandelwal Kshipra Sharma Vinod Kumar

10.1016/b978-0-12-815394-9.00004-2

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Citations (2)

Influence of Switching Conditions on the VETO Magnitudes in a GIS

IEEE Power Engineering Review (2001)

Vinod Kumar Joy M Thomas M. S. Naidu

Estimation of very fast transient overvoltage (VFTO) has been carried out using EMTP for various switching conditions in a 420 kV gas-insulated substation (GIS). The variation of the VFTO peak along the GIS bus nodes for disconnector and circuit breaker switching operations, as well as the variation of VFTO peak with different magnitudes of trapped charges, have been studied. The results indicate a distinct pattern of variation of VFTO peak along the nodes of the GIS bus in the case of disconnector switch operation as compared to that of circuit-breaker operation. It has also been noticed that the variation of VFTO peak levels are not in direct proportion to the trapped charge present on the HV bus.

Disconnector

Overvoltage

Emtp

Transient (computer programming)

Variation (astronomy)

10.1109/mper.2001.4311440

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Citations (53)

How to Control Excited‐State Prototropism of Photoacids via the Acidity of Ionic Liquids

ChemistrySelect (2024)

Preeti Kasana Saloni Vinod Kumar

Abstract To control presence of ionic species in excited state of a fluorophore is quite challenging task. Herein, we report the unusual excited‐state prototropism of an important photoacid carbazole dissolved in water in presence of small amount of added ionic liquids (ILs). We have observed that the excited state prototropic equillibria of carbazole dissolved in water can be affected by the presence of small amount of added ILs. More importantly, the excited‐state prototropism of carbazole can be controlled via the acidity of added ILs. More specifically, we found that the fluorescence emission from the neutral prototropic form of carbazole can be observed even under highly basic conditions (aqueous NaOH, pH 12.6) in presence of only small amount of any of the added ILs such as 1‐butyl‐3‐methyl imidazolium tetrafluoroborate ([bmim][BF 4 ]), 1‐butyl‐1‐methylpyrrolidinium bis(trifluromethansulphonyl)imide ([bmpyrr][Tf 2 N]) and 1‐butyl‐3‐methyl imidazolium hexafluorophosphate ([bmim][PF 6 ]). The observed fluorescence emission from the neutral form of carbazole can be attributed to excited state protonation of carbazole anion by taking proton from IL cation. In a true sense, the excited state carbazole does not transfer the proton; rather takes the proton from IL cation. The observed unusual excited state protonation of carbazole anion to neutral carbazole, in the excited state even in highly basic conditions can be attributed to the presence of acidic protons with the IL cations. Herein, we reports quite unusual results where the IL assisted excited state protonation of carbazole anion occured in an exclusive manner in which proton from the IL cation exclusively protonate carbazole anion surrounded by highly alkaline media (water, pH 12.6). ILs acidity controlled excited‐state properties of important photoacids can have a wide range of chemical and biological applications and the observed results can play important roles in chemical technology to control prototropic equillibra with the help of ILs for some specific application. These observations can open new windows to attract more applications for these alternative solvent media to applications in pH and pOH jump experiments, effective photo protecting agents and chemical lasers.

10.1002/slct.202400238

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Citations (1)