Digambar Balaji Shinde

King Abdullah University of Science and Technology

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Zhiping Lai

King Abdullah University of Science and Technology

Boddu Shashi Kanth

Indian Institute of Chemical Technology

Rahul Banerjee

Indian Institute of Science Education and Research Kolkata

Sharath Kandambeth

King Abdullah University of Science and Technology

Biswanath Das

Indian Institute of Chemical Technology

Li Cao

King Abdullah University of Science and Technology

Zongyao Zhou

Harbin Institute of Technology

Bishnu P. Biswal

National Institute of Science Education and Research

Xiaowei Liu

King Abdullah University of Science and Technology

Jayprakash Narayan Kumar

Ariel University

Cooperative Institutions

King Abdullah University of Science and Technology

Indian Institute of Chemical Technology

Academy of Scientific and Innovative Research

National Chemical Laboratory

University of Rajasthan

New York University Abu Dhabi

University of Tehran

K.N.Toosi University of Technology

New York University

Latvijas Organiskās Sintēzes Institūts

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ChemInform Abstract: Studies on Novel Phytochemicals. Part 76. New Bioactive Macrocyclic Diterpenoids from Jatropha multifida.

ChemInform (2012)

Boddu Shashi Kanth Avula Satya Kumar Digambar Balaji Shinde Kothapalli Haribabu Tuniki Venugopal Raju

Abstract Two new diterpenoids, multifidanol (I) and multifidenol (II), are isolated together with several known compounds.

Terpene

Jatropha

10.1002/chin.201214188

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ChemInform Abstract: Studies on Novel Synthetic Methodologies. Part 219. Allylation of N‐Benzoylhydrazones (= N′‐Alkylidene‐Substituted Benzohydrazides) by Treatment with Allyl Bromide in the Presence of Zinc in Aqueous Ammonium Chloride Solution.

ChemInform (2011)

Biswanath Das Digambar Balaji Shinde Boddu Shashi Kanth Jayprakash Narayan Kumar

10.1002/chin.201151052

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Electropolymerization of robust conjugated microporous polymer membranes for rapid solvent transport and narrow molecular sieving

Nature Communications (2020)

Zongyao Zhou Xiang Li Dong Guo Digambar Balaji Shinde Dongwei Lu

Abstract Pore size uniformity is one of the most critical parameters in determining membrane separation performance. Recently, a novel type of conjugated microporous polymers (CMPs) has shown uniform pore size and high porosity. However, their brittle nature has prevented them from preparing robust membranes. Inspired by the skin-core architecture of spider silk that offers both high strength and high ductility, herein we report an electropolymerization process to prepare a CMP membrane from a rigid carbazole monomer, 2,2’,7,7’-tetra(carbazol-9-yl)-9,9’-spirobifluorene, inside a robust carbon nanotube scaffold. The obtained membranes showed superior mechanical strength and ductility, high surface area, and uniform pore size of approximately 1 nm. The superfast solvent transport and excellent molecular sieving well surpass the performance of most reported polymer membranes. Our method makes it possible to use rigid CMPs membranes in pressure-driven membrane processes, providing potential applications for this important category of polymer materials.

Conjugated microporous polymer

Carbazole

Ductility (Earth science)

10.1038/s41467-020-19182-1

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Citations (89)

Enhancement of Chemical Stability and Crystallinity in Porphyrin‐Containing Covalent Organic Frameworks by Intramolecular Hydrogen Bonds

Angewandte Chemie International Edition (2013)

Sharath Kandambeth Digambar Balaji Shinde Manas K. Panda Binit Lukose Thomas Heine

A strong bond: A strategy based on intramolecular hydrogen-binding interactions in 2D covalent organic frameworks (COFs) is shown to improve the crystallinity, porosity, and chemical stability of the material. The concept is validated by removing the hydrogen-bonding interaction in the methoxy analog which showed a lower stability and crystallinity.

Chemical Stability

10.1002/anie.201306775

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Citations (473)

Constructing covalent organic frameworks in waterviadynamic covalent bonding

IUCrJ (2016)

Jayshri Thote Harshitha Barike Aiyappa Rahul Kumar Raya Sharath Kandambeth Bishnu P. Biswal

The formation of keto-enamine based crystalline, porous polymers in water is investigated for the first time. Facile access to the Schiff base reaction in water has been exploited to synthesize stable porous structures using the principles of Dynamic Covalent Chemistry (DCC). Most credibly, the water-based Covalent Organic Frameworks (COFs) possess chemical as well as physical properties such as crystallinity, surface area and porosity, which is comparable to their solvothermal counterparts. The formation of COFs in water is further investigated by understanding the nature of the monomers formed using hydroxy and non-hydroxy analogues of the aldehyde. This synthetic route paves a new way to synthesize COFs using a viable, greener route by utilization of the DCC principles in conjunction with the keto-enol tautomerism to synthesize useful, stable and porous COFs in water.

Dynamic Covalent Chemistry

Covalent organic framework

Enamine

10.1107/s2052252516013762

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Citations (65)

Chlorine-functionalized keto-enamine-based covalent organic frameworks for CO₂ separation and capture

CrystEngComm (2018)

Digambar Balaji Shinde Mayur Ostwal Xinbo Wang Amol M. Hengne Yang Liu

Enhancing the CO₂ uptake and selectivity of the keto-enamine-based COFs by chlorination.

Enamine

Covalent organic framework

10.1039/c8ce01397g

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Citations (40)

Novel Approach for the Synthesis ofN-Substituted Pyrroles Starting Directly from Nitro Compounds in Water

Synthetic Communications (2011)

Biswanath Das Digambar Balaji Shinde Boddu Shashi Kanth Jayprakash Narayan Kumar

Abstract A novel approach for a facile high-yielding synthesis of N-substituted pyrroles has been discovered by the treatment of nitroarenes with 2,5-dimethoxytetrahydrofuran using indium in dilute aqueous HCl at room temperature.

10.1080/00397911.2010.526748

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Citations (4)

First Year Post-Graduate Students’ Awareness of University Library’s Resources, Facilities and Services:A Case Study

Journal of Library Development (2018)

Digambar Balaji Shinde

This study is indented to know first year post-graduate students’ awareness of Jayakar Library, its resources, facilities and services. The study is carried out by compiling data with the help of a questionnaire. It is found that most of the students aware about library sections, locations of their subject books, fiction collection, library’s website, etc. However, many students are unaware about the online resources, orientation programmes, etc. Broadly, the survey suggests that more efforts need to make to increase first year PG students’ awareness about library resources, facilities and services.

Post graduate

Graduate students

10.32344/jld/v4/i1/2018/31-46

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Synthesis and bioefficacy test of some novel Halogenated -4-[(substituted-benzothiazol-2-yl)-hydrazono]-2-(substituted phenyl)-5-methyl -2,4-dihydro-pyrazol-3-one

Heterocyclic Communications (2010)

Vineeta Sareen Vineeta Khatri Kapil Sharma Digambar Balaji Shinde S. Sareen

Some new 4-[(substituted-benzothiazol-2-yl)-hydrazono]-2-(substituted phenyl) -5-methyl-2, 4-dihydro-pyrazol-3-one (3) have been prepared by reacting substituted benzothiazol-2-yl amine with acetoacetic ester, 2-fsubstituted benzothiazol -2-yl)-hydrazono]-3-oxo-butyric acid ethyl ester (2) react with different hydrazines to give the title compounds.These compounds are evaluated for their antimicrobial activity.The structures of all these compounds have been confirmed by I.R., 'HNMR,Mass spectra and elemental analysis data.

10.1515/hc.2010.16.1.39

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Covalent Organic Framework Embedded with Magnetic Nanoparticles for MRI and Chemo-Thermotherapy

Journal of the American Chemical Society (2020)

Farah Benyettou Gobinda Das Anjana Ramdas Nair Thirumurugan Prakasam Digambar Balaji Shinde

Nanoscale imine-linked covalent organic frameworks (nCOFs) were first loaded with the anticancer drug Doxorubicin (Dox), coated with magnetic iron oxide nanoparticles (γ-Fe2O3 NPs), and stabilized with a shell of poly(l-lysine) cationic polymer (PLL) for simultaneous synergistic thermo-chemotherapy treatment and MRI imaging. The pH responsivity of the resulting nanoagents (γ-SD/PLL) allowed the release of the drug selectively within the acidic microenvironment of late endosomes and lysosomes of cancer cells (pH 5.4) and not in physiological conditions (pH 7.4). γ-SD/PLL could efficiently generate high heat (48 °C) upon exposure to an alternating magnetic field due to the nCOF porous structure that facilitates the heat conduction, making γ-SD/PLL excellent heat mediators in an aqueous solution. The drug-loaded magnetic nCOF composites were cytotoxic due to the synergistic toxicity of Dox and the effects of hyperthermia in vitro on glioblastoma U251-MG cells and in vivo on zebrafish embryos, but they were not significantly toxic to noncancerous cells (HEK293). To the best of our knowledge, this is the first report of multimodal MRI probe and chemo-thermotherapeutic magnetic nCOF composites.

10.1021/jacs.0c05381

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Citations (114)