.............................Success is a Science; If you have the Conditions, you get the Result. by Oscar Wilde
Porous Mo Modified Ni3N/Ni3S2 Hetero Interfacing for Facile Sulfur Oxidation Mediated Green H2 Production. Setia. Y.; Paltasingh S.N.; Nayak, S. K.; Sinha, A. S. K.; Ojha, U.; Sahoo M. K.; Adv. Sustainable Syst. 2025, e00407 . DOI: https://doi.org/10.1002/adsu.202500407
Media Polarity Control Strategy to Tailor Mechanical Behavior of Dual Monomer Single Network Hydrogels and Integrated Machine Learning Approach. Mondal, S.; Anand, S.; Mondal, D.; Sinha, A. S. K.; Ojha, U. Chem. Mater. 2025. DOI: 10.1021/acs.chemmater.5c00418
Polyelectrolyte Complexation Approach to Devise PEDOT:PSS-Based Moldable, Self-Healable, and Ultra-Stretchable Solid Electrolytes for Underwater Electronics. Anand, S.; Tewary, A.; Upadhyay, C.; Sinha, A. S. K.; Ojha, U. ACS Appl. Electron. Mater. 2024. DOI: 10.1021/acsaelm.4c01278
Ni Surface & Polyacryloyl Hydrazide Mediated Growth of Co3O4@NiCu Alloy Nanocuboids for Effective Methanol Oxidation and Oxygen Evolution Reactions. Semwal, S.; Samal, A.; Nayak, S. K.; Urkude, R. R.; Sinha, A. S. K.; Ojha, U. Adv. Sustainable Syst. 2024, 2400372. DOI: 10.1002/adsu.202400372
Hydroxylamine Promoted In Situ Growth of Fe2O3/Ni3N Nanospikes on a Ni Surface for an Effective Hydrogen Evolution Reaction. Tewary, A.; Semwal, S.; Shakir, R.; Karthikeyan, J.; Sinha, A. S. K.; Ojha, U. ACS Appl. Nano Mater. 2024, 7, 15923–15931. DOI: 10.1021/acsanm.4c02787
Carbohydrate-Based Reprocessable and Healable Covalent Adaptable Biofoams. Upadhyay, C.; Ojha, U. Macromol. Rapid Commun. 2024, 2400239, (Invited Article) DOI: 10.1002/marc.202400239
NiFeOOH-Co9S8-Intercalated Nanostructure Arrays for Energy-Efficient H2 Production and Sulfion Oxidation at High Current Density. Semwal, S.; Shakir, R.; Karthikeyan, J.; Sinha, A. S. K.; Ojha, U. ACS Appl. Nano Mater. 2023, 6, 20, 18945–18956 DOI: 10.1021/acsanm.3c03438
Closed-loop Recyclable & Biodegradable Thioester Based Covalent Adaptable Networks. Maity, P. R.; Upadhyay, C.; Sinha, A. S. K.; Ojha, U. Chem. Commun., 2023, (Invited Article) DOI: 10.1039/D3CC00181D
Scalable Green Synthesis of Ni3N‑Encapsulated NC-Layered FeOOH Heterostructures: Bifunctional Electrodes for Sustainable Electrocatalytic Seawater Splitting. Tewary, A.; Mandal, S.; Alam, Z.; Sinha, A. S. K.; Ojha, U; ACS Sustainable Chem. Eng., 2023. DOI: 10.1021/acssuschemeng.2c07248
Stress-Induced Shape-Shifting Materials Possessing Autonomous Self-Healing and Scratch-Resistant Ability. Upadhyay, C.; Ojha, U. Chem. Asian J. 2023, e202201082. (Invited Article) DOI: 10.1002/asia.202201082 (Special Collection on Sustainable Solutions for Plastic Issues)
Mechanically Robust Anisotropic Hydrogel–Organogel Conjugates for Soft Actuators with Fast Response Time and Diverse Bi-Axial Programmable Folding Ability. Mandal, S.; Vignesh, A.; Debnath, S.; Ojha, U. Chem. Mater., 2022, 34, 5125-5137. DOI: 10.1021/acs.chemmater.2c00606
Healable, Recyclable, and Programmable Shape Memory Organogels Based on Highly Malleable Catalyst-Free Carboxylate Linkages. Debnath, S., Upadhyay, C., Ojha, U. ACS Appl. Mater. Interfaces, 2022 ,14, 9618-9631. DOI: 10.1021/acsami.1c24946
Facile one pot green synthesis of –NH2 surface functionalized graphene-polymer nanocomposite: Subsequent utilization as stabilizer in pickering emulsions. Narukulla, R., Ojha, U., Sharma, T. J. Colloids and Surfaces A , 2022, 641,128594 DOI: 10.1016/j.colsurfa.2022.128594
Carbon dioxide capturing evaluation of polyacryloyl hydrazide solutions via rheological analysis for carbon utilization applications. Narukulla, R., Chaturvedi, K. R., Ojha, U., Sharma, T. Energy, 2021 DOI: 10.1016/j.energy.2021.122929
A polymeric suspension of amine functionalized silica nanoparticles derived from Moonj grass for the carbon capture and storage applications. Pandey, N., Chaturvedi, K. R., Sharma, T., Ojha, U. J. Macromol. Sci. A., 2021 DOI: 10.1080/10601325.2021.2013727
Bio-based polydimethylsiloxane porous sponge materials with programmable hydrophobicity and porosity for efficient separation of hydrophobic liquids from water. Pandey, N., Ojha, U. J. Appl. Polym. Sci. 2021, e51823. DOI: 10.1002/app.51823
Supplementary Networking of Interpenetrating Polymer System (SNIPSy) Strategy to Develop Strong & High Water Content Ionic Hydrogels for Solid Electrolyte Applications. Mandal, S., Kumari, S., Kumar, M., Ojha, U., Adv. Funct. Mater. 2021, 31, 2100251. (Highlighted on the Cover Art of Adv. Funct. Mater, Hot Topic Collection: Flexible Electronics)
Dynamic Carboxylate Linkage Based Reprocessable and Self-Healable Segmented Polyurethane Vitrimers Displaying Creep Resistance Behavior and Triple Shape Memory Ability, Debnath S., Tiwary S., Ojha U., ACS Appl. Polym. Mater. 2021, 3, 4, 2166–2177
Recent Trends in Development of Metal Nitride Nanocatalysts for Water Electrolysis Application, Sinha, A. S. K., Ojha, U., 2021, Electrocatalysis, IntechOpen. DOI: 10.5772/intechopen.95748 (Invited Book Chapter)
Evolution of Ziegler-Natta Catalysts for Polymerization of Olefins, Sinha A.S.K., Ojha U. 2021, Catalysis for Clean Energy and Environmental Sustainability. Springer, Cham. DOI: 10.1007/978-3-030-65021-6_21 (Invited Book Chapter)
Solvent Processable and Recyclable Covalent Adaptive Organogels Based on Dynamic Trans-esterification Chemistry: Separation of Toluene from Azeotropic Mixtures, Debnath, Suman; Kaushal, Swaraj; Mandal, Subhankar; Ojha, Umaprasana; Polym. Chem., 2020,11, 1471-1480. DOI: 10.1039/C9PY01807G (From the themed collection: Chemistry for Covalent Adaptable Polymer Networks)
Effect of NaCl concentration on stability of a polymer–Ag nanocomposite based Pickering emulsion: validation via rheological analysis with varying temperature, R Narukulla, U Ojha, T Sharma, RSC Advances 2020, 10 (36), 21545-21560
Catalyst Free Partially Bio-Based Polyester Vitrimers, Suman Debnath, Swaraj Kaushal, Umaprasana Ojha, ACS Appl. Polym. Mater., 2020, 2, 2, 1006.
Nanocomposite Grafted Stretchable and Conductive Ionic Hydrogels for Use as Soft Electrode in a Wearable Electrocardiogram Monitoring Device, Subhankar Mandal, Anant Seth, Vikas Yadav, Srishti Kumari, Milan Kumar, Umaprasana Ojha, ACS Appl. Polym. Mater., 2020, 2, 2, 618-625.
Enhancing the stability and redispersibility of o/w Pickering emulsion through polyacryloyl hydrazide-tannic acid synergy, R Narukulla, U Ojha, T Sharma. J. Colloids and Surfaces A: Physicochemical and Engineering Aspects, 2019, 568, 204-215, DOI: 10.1016/j.colsurfa.2019.02.012
Polyacryloyl Hydrazide Incorporation in Ionic Hydrogels Improves Toughness, Elasticity, Self-Healability, Adhesive & Strain Sensing Properties, Subhankar Mandal, Niharika Pandey, Somendra Singh, Amit Ranjan, Umaprasana Ojha, Mater. Chem. Front., 2019, 3, 690-701.
Shale inhibition by low-molecular-weight cationic polymer in water-based mud, M Beg, P Singh, S Sharma, U Ojha, Journal of Petroleum Exploration and Production Technology, 2019, 9 (3), 1995-2007
Ionization-Induced Reversible Aggregation of Self-Assembled Polycarbonyl Hydrazide Nanoparticles: A Potential Candidate for Turn-On Base Sensor and pH-Switchable Materials, Rewati Raman Ujjwal, Debashis Panda, Anand Pratap Singh, Anuj Kumar, Umaprasana Ojha*, Kumar Kishore. ACS Applied Nano Materials 2018, 1, 1, 82-93
Self-Healable and Recyclable Dynamic Covalent Networks Based on Room Temperature Exchangeable Hydrazide Michael Adduct Linkages. Suman Debnath, Rewati Raman Ujjwal, Umaprasana Ojha, Macromolecules 2018, 51, 23, 9961-9973, DOI: 10.1021/acs.macromol.8b01827
Effect of cationic copolyelectrolyte additives on drilling fluids for shales, M Beg, S Sharma, U Ojha, Journal of Petroleum Science and Engineering, 2017, 161, 506-514 https://doi.org/10.1016/j.petrol.2017.12.009
Rewati Raman Ujjwal, Chandan Sona, Suman Debnath, Prem Narayan Yadav, Umaprasana Ojha, Dye Labelled Polyacryloyl Hydrazide−Ag Nanoparticle Fluorescent Probe for Ultra-sensitive and Selective Detection of Au Ion ACS Omega 2017, 2, 8, 4278-4286 .
Ramesh Narukulla, Tushar Sharma, Umaprsana Ojha, Stable and redispersible polyacryloyl hydrazide-Ag nanocomposite Pickering emulsions, Soft Matter, 2017,13, 6118-6128
Ranjan Baruah, Anuj Kumar,, Rewati Raman Ujjwal, Soumya Kedia, Amit Ranjan Umaprasana Ojha, Recyclable Thermosets based on Dynamic Amidation and Aza-Michael Addition Chemistry Macromolecules 2016, 49, 20, 7814-7824
Rewati Raman Ujjwal, Tushar Sharma, Jitendra Sangwai, Umaprasana Ojha, Rheological Investigation of a Random Copolymer of Polyacrylamide and Polyacryl Hydrazide (PAM-ran-PAH) for Oil Recovery Applications, J. Appl. Polym. Sci. 2017, 134, 44648.
Rewati Raman Ujjwal, Mahavir P. Purohit, Satyakam Patnaik, Umaprasana Ojha, A General Reagent Free Route to pH Responsive Polyacryloyl Hydrazide Capped Metal Nanogels for Synergistic Anticancer Therapeutic ACS Applied Materials & Interfaces 2015, 7, 21, 11497-11507
Umaprasana Ojha, Anuj Kumar, Polyacryloyl hydrazide based hydrogels. Patent Ind. Appl. 2015, 819/DEL/2015.
Umaprasana Ojha, Rewati Raman Ujjwal & Anuj Kumar, Nanogels for Anticancer therapeutics, Patent. Ind. Appl. 2015, 367/DEL/2015.
Anuj Kumar, Rewati Raman Ujjwal, Umaprasana Ojha, Polymeric drug careers through covalent attachment and encapsulation for controlled delivery purposes Int. J. Plast. Tech. 2014, 18, 333–336
Kumar, A.; Samal, S.; Dash; R.; Ojha, U. Polyacryloyl Hydrazide Based Injectable & Stimulai Responsive Hydrogel with Tunable Properties, J. Mater. Chem. B, 2014, 2, 7429-7439
Kumar, A.; Ujjwal, R. R.; Mittal, A.; Bansal, A.; Ojha, U. Polyacryloyl Hydrazide: An Efficient, Simple and Cost Effective Precursor to a Range of Functional Materials through Hydrazide Based Click Reactions ACS Applied Materials & Interfaces 2014, 6, 3, 1855-1865
Jha, N.; Kumar, A.; Mathur, A.; Ojha, U. Analysis of CO2 Swelling and Modeling of PVT Properties of Reservoir fluid of Onland Field of Gujarat,India 2013, (submitted)
Kulkarni, P.; Ojha, U.; Wei, X.; Gurung, N.; Seethamraju, K. Faust, R. Thermal and Mechanical Properties of Polyisobutylene based Polyurethanes, J. Appl. Polym. Sci. 2013 , ASAP.
Garle, A.; Kong, S.; Ojha, U. ; Budhlall, B. Photocurable Poly(ε-caprolactone) Networks showing a Shape Memory Effect” ACS Appl. Mater. Interface, 2012, 4, 645-657.
Cozzens, D.; Luk, A.; Ojha, U.; Ruths, M.; Faust, R. Surface Characterization and Protein Interactions of Segmented Polyisobutylene-Based Thermoplastic Polyurethanes, Langmuir, 2011, 27, 14160-14168.
Tripathy, R.; Ojha, U.; Faust, R. Polyisobutylene modified bisphenol A diglycidylether based flexible and transparent epoxy resins possessing improved mechanical properties, Macromolecules, 2011, 44, 6800-6809.
Ojha, U.; Kulkarni, P.; Cozzens, D.; Faust, R. Hydrolytic degradation studies of Polyisobutylene and Poly(L-lactide) based multiblock copolymers. J Polym Sci Part A: Polym Chem. 2010, 48, 3767-3674.
Cozzes, D.; Ojha, U.; Kulkarni, P.; Faust, R. Long term in vitro biostability of segmented polyisobutylene-based thermoplastic polyurethanes. J Biomed mater Res Part A 2010, 95A, 774-782.
Ojha, U.; Faust, R. “Synthesis and characterization of biostable thermoplastic polyurethaneurea elastomers based on polyisobutylene macrodiamines” J. Macromol. Sci. Part A. Pure Appl. Chem. 2010, 47, 186-191.
Faust, R.; Tripathy, R.; Ojha, U. Functional polyisobutylene based macromonomers and methods for making the same PCT. Int. Appl. 2010, WO 2010111280 A1 20100930.
Faust, R.; Ojha, U. Polyisobutylene based polyurethanes and the method for making and using them. PCT. Int. Appl. 2010, WO 2010081132 A1 20100715 (Licensed to Boston Scientific Corporation.)
Boden, M.; Schwarz, M. C.; Strickler, F. H.; Faust, R.; Ojha, U.; Higashihara, T. Copolymers having polyisobutylene and biodegradable polymer segments U.S. Pat. Appl. Publ. 2010, US 2010166820 A1 2010070.
Cozzens, D.; Ojha, U.; Ruths, M.; Faust, R. Biocompatibility of novel polyisobutylene-based thermoplastic polyurethanes From Polym. Preprints 2010, 51, 626-627.
Kulkarni, P.; Ojha, U.; Cozzens, D.; Faust, R. Hydrolytic degradation of polyisobutylene and poly-lactide based multiblock copolymers Polym. Preprints 2010, 51, 5-6.
Anandakathir, R.; Ojha, U.; Ada, E. T.; Faust, R.; Kumar, J. “Stilbene-based fluorescent sensor for detection of organophosphorus warfare nerve agents” J. Macromol. Sci. Part A. Pure Appl. Chem. 2009, 46, 1217-1222.
Ojha, U.; Kulkarni, P.; Faust, R. “Synthesis and characterization of novel biostable thermoplastic polyurethane elastomers based on polyisobutylene macrodiols” Polymer 2009, 50, 3448-3457.
Tripathy, R.; Ojha, U.; Faust, R. “Syntheses and characterization of polyisobutylene based macromonomers with methacrylate, glycidyl-ether, acrylate or vinyl-ether end-functionality” Macromolecules 2009, 42, 3958-3964.
Ojha, U.; Kulkarni, P.; Faust, R. “Syntheses and characterization of novel multiblock copolymers consisting of polyisobutylene and poly(L-lactide) segments” J. Polym. Sci. Part A: Polym Chem. 2009, 47, 3490-3505.
Ojha, U.; Feng, D.; Chandekar, A.; Whitten, J. E.; Faust, R. “Peptide surface modification of p(hydroxyethyl methacrylate-co-methyl methacrylate)-b-isobutylene-b-p(hydroxyethyl methacrylate-co-methyl methacrylate) block copolymers” Langmuir 2009, 25, 6319-6327.
Schwarz, M.; Faust, R.; Ojha, U.; Boden, M.; Strickler, F. Modified polymers and methods for making and using the same PCT Int. Appl. 2009, WO 2009006538.
Tripathy, R.; Ojha, U.; Faust, R. Syntheses and characterization of polyisobutylene based macromonomers with methacrylate, glycidyl-ether, acrylate or vinyl-ether end-functionality. Polym. Preprints 2009 (In Press).
Garle, A.; Ojha, U.; Budhlall, B. Combination of ROP and RAFT synthesis of a novel biodegradable, stimuli responsive poly[caprolactone-ran-cinnamoyl modified caprolactone]-b-PNIPAm-b-poly[caprolactone-ran-cinnamoyl modified caprolactone] triblock copolymer. PMSE Preprints 2009,101, 1221-1222.
Ojha, U.; Faust, R. Synthesis, characterization and properties of biostable thermoplastic polyurethanes based on polyisobutylene and poly(tetramethylene oxide) segments. PMSE Preprints 2009, 101, 1228-1229.
Ojha, U.; Kulkarni, P.; Faust, R. Design and synthesis of biodegradable multiblock copolymers based on polyisobutylene and poly-L-lactide segments. PMSE Preprints 2009. 101, 1200-1201.
Ojha, U., Rajkhowa, R.; Rao, S. A.; Faust, R. “A novel approach to synthesis of different end-functionalized polyisobutylenes using nucleophilic substitution reactions” Macromolecules 2008, 41, 3832-3841.
Faust, R. Ojha, U. Functional hydrocarbon polymers and process for producing same PCT Int. Appl.2008, WO 2008060333. (Licensed to Boston Scientific Corporation.)
Kumar, A.; Santra, S.; Ojha, U. P.; Sreelekha, P. G.; Jasmine. N-alkylation of amino acids and its applications in polymer syntheses. Indian Pat. Appl. 2008, 2006MU00775.
Kumar, A.; Santra, S.; Ojha, U. P.; Sreelekha, P. G.; Jasmine. Malonic acid based monomers and polymers. Indian Pat. Appl. 2007, 2006MU00664.
Ojha, U.; Feng, D.; Chandekar, A.; Whitten, J. E.; Faust, R. Peptide surface modification of poly(hydroxyethyl methacrylate-co-methyl methacrylate)-b-isobutylene-b-poly(hydroxyethyl methacrylate-co-methyl methacrylate) block copolymers to enhance endothelialization. PMSE Preprints 2007, 97, 28-30.
Higashihara, T.; Ojha, U.; Faust, R.; Strickler, F. Grafting of poly(dimethylsiloxane) onto poly(styrene-block-isobutylene-block-styrene). Polym. Preprints 2007, 48, 1037-1038.
Ojha, U.; Faust, R. Synthesis and characterization of end-functionalized polyisobutylenes for Sharpless-type click reactions. Polym. Preprints 2007, 48, 786-787
Ojha, U., P.; Kumar, A. “Design, synthesis and characterization of main chain aromatic polyesters based on 3,4-ethylenedioxythiophene” J. Polym. Sci. Part A: Polym Chem. 2006, 44, 3479-3486.
Ojha, U., P.; Ramesh, C.; Kumar, A. “Design, synthesis and characterization of polyureas based on 3,4-ethylenedioxythiophene” J. Polym. Sci. Part A: Polym. Chem. 2005, 43, 5823-5830.
Ojha, U., P.; Krishnamoorthy, K.; Kumar. A. “Synthesis and characterization of polyoxadiazoles based on 3,4-alkylenedioxythiophene” Synth. Met. 2003, 132, 279-283.
Kumar, A.; Contractor, A. Q.; Ambade, A. V.; Ranganathan, T.; Krishnamoorthy, K.; Mishra, S. P.; Ojha, U. P.; Santra, S.; Kanungo, M. Novel approaches for novel materials. Int. J. Plast. Technol. 2003, 6, 73-76.
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