Sunder N. Dhuri
Current Organizations / Institutes
The organizations/institutes from the scholar's latest article
Previous Organizations / Institutes
The organizations / institutes from the scholar's other articles in the past ten years
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Research Interests
Sunder N. Dhuri has a total of 125 co-authors. Here are the top co-authors by number of shared publications:
Sarvesh S. Harmalkar
School of Chemical Sciences, Goa University, Taleigao, Goa 403206, India
9 shared publicationsBikshandarkoil R. Srinivasan
8 shared publications- Bikshandarkoil R. Srinivasan
School of Chemical Sciences, Goa University, Goa, India
8 shared publications Wolfgang Bensch
Christian-Albrechts-Universität Kiel
8 shared publications- Christian Näther
Institut für Anorganische Chemie, Universität Kiel, Germany
7 shared publications Nikita N. Harmalkar
7 shared publications
Latest Publications
- 16 June 2025
- Published by Springer Nature in Journal of Fluorescence
- Vol. 35 (11) , 11593-11603
Synthesis, Characterization, and Photoluminescence Properties of Binuclear Co(ll), Ni(ll) and Cu(ll) Schiff Base Complexes with μ -1, 1 Azide Bridges
Three new Co(II) (1), Ni(II) (2), and Cu(II) (3) binuclear complexes with versatile azide bridges and Schiff base derived from 2-hydroxy-1-naphthaldehyde and 2-aminothiophenol have been synthesized. Compounds 1–3 were characterized using various techniques, including microanalysis (CHNS), molar conductance, FTIR, UV–visible, 1H-NMR, mass spec, photoluminescence (PL) spectroscopy, thermogravimetric analysis (TGA-DTG), scanning electron microscopy (SEM) and Energy dispersive X-ray (EDX) techniques. Molar conductance values of the newly synthesized complexes indicate that the complexes are electrolytes in solution. Spectroscopic results suggest that the Schiff base acts as a tridentate ligand, bonding to the metal using imino nitrogen, thiol sulphur, and hydroxy oxygen atoms. Upon the incorporation of the azide pseudohalide, the µ -1, 1 bridge are proposed for all the complexes. Electronic spectra of 1–3 suggest an octahedral environment around the metal ions. Schiff base exhibited fluorescence originating from intra-ligand (\({\varvec{\pi}}\to {{\varvec{\pi}}}^{\boldsymbol{*}}\)) transitions with a quantum yield value of (9 ± 1) %, while the metal complexes exhibited reduced photoluminescence intensity and quantum yield (0.5 – 3.80%) relative to the Schiff base. These results suggest that the Schiff base has a specific recognition for transition metals. It can be used as a turn-off fluorescence sensor specifically for Cu2+ ions with a fluorescence quenching efficiency of (94 ± 2) %.- 16 June 2025
- Published by Springer Nature in Journal of Fluorescence
- Vol. 35 (11) , 11593-11603
Synthesis, Characterization, and Photoluminescence Properties of Binuclear Co(ll), Ni(ll) and Cu(ll) Schiff Base Complexes with μ -1, 1 Azide Bridges
Three new Co(II) (1), Ni(II) (2), and Cu(II) (3) binuclear complexes with versatile azide bridges and Schiff base derived from 2-hydroxy-1-naphthaldehyde and 2-aminothiophenol have been synthesized. Compounds 1–3 were characterized using various techniques, including microanalysis (CHNS), molar conductance, FTIR, UV–visible, 1H-NMR, mass spec, photoluminescence (PL) spectroscopy, thermogravimetric analysis (TGA-DTG), scanning electron microscopy (SEM) and Energy dispersive X-ray (EDX) techniques. Molar conductance values of the newly synthesized complexes indicate that the complexes are electrolytes in solution. Spectroscopic results suggest that the Schiff base acts as a tridentate ligand, bonding to the metal using imino nitrogen, thiol sulphur, and hydroxy oxygen atoms. Upon the incorporation of the azide pseudohalide, the µ -1, 1 bridge are proposed for all the complexes. Electronic spectra of 1–3 suggest an octahedral environment around the metal ions. Schiff base exhibited fluorescence originating from intra-ligand (\({\varvec{\pi}}\to {{\varvec{\pi}}}^{\boldsymbol{*}}\)) transitions with a quantum yield value of (9 ± 1) %, while the metal complexes exhibited reduced photoluminescence intensity and quantum yield (0.5 – 3.80%) relative to the Schiff base. These results suggest that the Schiff base has a specific recognition for transition metals. It can be used as a turn-off fluorescence sensor specifically for Cu2+ ions with a fluorescence quenching efficiency of (94 ± 2) %.- 9 February 2025
- Published by Elsevier in Journal of Molecular Structure
- Vol. 1332
Invitro cytotoxicity and DNA interaction studies of nickel(II) mefenamato compounds with substituted α-diimines
- 9 February 2025
- Published by Elsevier in Journal of Molecular Structure
- Vol. 1332
Invitro cytotoxicity and DNA interaction studies of nickel(II) mefenamato compounds with substituted α-diimines
- 2 February 2025
- Published by Springer Nature in Journal of Cluster Science
- Vol. 36 (2) , 1-20
Photocatalytic Degradation of Methylene Blue Dye by Nickel Sulphide Nanoparticles Derived from Thiosemicarbazone Complexes as Single Source Precursors
- 2 February 2025
- Published by Springer Nature in Journal of Cluster Science
- Vol. 36 (2) , 1-20
Photocatalytic Degradation of Methylene Blue Dye by Nickel Sulphide Nanoparticles Derived from Thiosemicarbazone Complexes as Single Source Precursors
- 6 January 2025
- Published by Wiley in ChemistrySelect
- Vol. 10 (1)
Variation in Structural Features Induced by ortho ‐Substituted Benzoate Ligands in Zinc Cyclam‐Based Compounds: Synthesis, Characterization, and Hirshfeld Studies
This paper investigates the structural diversity and non‐covalent interactions in eight newly synthesized [Zn(II)(cyclam)] 2+ compounds ( 1 – 8 ) featuring ortho ‐substituted benzoate ligands. Compounds ( 1 ) and ( 2 ) exhibit 1D polymeric structures, wherein aqua ligands bridge the cationic and anionic units, resulting in [Zn 2 (μ‐H 2 O) 2 (cyclam)(L) 4 ] compounds. Here, L = o ‐methyl benzoate in 1 , L = o ‐methoxy benzoate in 2 , cyclam = 1,4,8,11‐tetraazacyclotradecane. Conversely, using hydroxy and nitro substituents at the ortho position results in the formation of zero‐dimensional compounds 3 and 4 , [Zn(C 10 H 24 N 4 )(L) 2 ] (L = o ‐hydroxybenzoate in 3 , L = o ‐nitrobenzoate in 4 ). Interestingly, the application of benzoate, o ‐chlorobenzoate, o ‐(methylthio)benzoate, and o ‐aminobenzoate led to significant variation in the crystal packing, resulting in discrete ionic compounds 5 – 8 . The analysis of geometric descriptors revealed the disruption of isostructurality in related isomorphous compounds upon switching the ortho substituents. To gain a deeper understanding of the non‐covalent interactions that govern the supramolecular self‐assemblies, we conducted Hirshfeld surface analysis on the compounds.
- 6 January 2025
- Published by Wiley in ChemistrySelect
- Vol. 10 (1)
Variation in Structural Features Induced by ortho ‐Substituted Benzoate Ligands in Zinc Cyclam‐Based Compounds: Synthesis, Characterization, and Hirshfeld Studies
This paper investigates the structural diversity and non‐covalent interactions in eight newly synthesized [Zn(II)(cyclam)] 2+ compounds ( 1 – 8 ) featuring ortho ‐substituted benzoate ligands. Compounds ( 1 ) and ( 2 ) exhibit 1D polymeric structures, wherein aqua ligands bridge the cationic and anionic units, resulting in [Zn 2 (μ‐H 2 O) 2 (cyclam)(L) 4 ] compounds. Here, L = o ‐methyl benzoate in 1 , L = o ‐methoxy benzoate in 2 , cyclam = 1,4,8,11‐tetraazacyclotradecane. Conversely, using hydroxy and nitro substituents at the ortho position results in the formation of zero‐dimensional compounds 3 and 4 , [Zn(C 10 H 24 N 4 )(L) 2 ] (L = o ‐hydroxybenzoate in 3 , L = o ‐nitrobenzoate in 4 ). Interestingly, the application of benzoate, o ‐chlorobenzoate, o ‐(methylthio)benzoate, and o ‐aminobenzoate led to significant variation in the crystal packing, resulting in discrete ionic compounds 5 – 8 . The analysis of geometric descriptors revealed the disruption of isostructurality in related isomorphous compounds upon switching the ortho substituents. To gain a deeper understanding of the non‐covalent interactions that govern the supramolecular self‐assemblies, we conducted Hirshfeld surface analysis on the compounds.
- 22 November 2024
- Published by Elsevier in Journal of Molecular Structure
- Vol. 1324
Ruthenium-catalyzed synthesis of novel phenoxy(phenyl)-1H-benzo[d]imidazoles: Spectral characterization and DFT studies
- 22 November 2024
- Published by Elsevier in Journal of Molecular Structure
- Vol. 1324
Ruthenium-catalyzed synthesis of novel phenoxy(phenyl)-1H-benzo[d]imidazoles: Spectral characterization and DFT studies
- 23 September 2024
- Published by Wiley in ChemistrySelect
- Vol. 9 (36)
Ligand Backbone Influenced Luminescent Properties of Mononuclear Zn(II)‐N3Py2 Compounds: Synthesis, Structures and Nitroaromatics Detection
Mononuclear Zn(II) compounds, [Zn(L 1 )](ClO 4 ) 2 ( 1 ) and [Zn(L 2 )](ClO 4 ) 2 ( 2 ), embedded with ligands, L 1 = N 1 ‐(pyridin‐2‐ylmethyl)‐ N 2 ‐(2‐((pyridin‐2‐ylmethyl)amino)ethyl)ethane‐1,2‐diamine and L 2 = N 1 ‐(pyridin‐2‐ylmethyl)‐ N 3 ‐(3‐((pyridin‐2‐ylmethyl)amino)propyl)propane‐1,3‐diamine are synthesized. Compound 1 is revisited, and structure‐function relation is compared with new compound 2 . Single crystal X‐ray analysis revealed that compound 1 crystallizes in the tetragonal non‐centrosymmetric P 4 1 space group while 2 crystallizes in a centrosymmetric monoclinic space group P 2 1 / c . The asymmetric unit consists of a crystallographically independent [Zn(L 1 )] 2+ cation in 1 while [Zn(L 2 )] 2+ cation in 2 and two unique perchlorate anions in both. IR spectra of 1 and 2 confirmed the vibrations due to organic ligands and tetrahedral perchlorates. PXRD confirmed the phase purity of powdered samples compared with theoretical PXRD patterns obtained from single‐crystal X‐ray diffraction data. NMR and ESI‐MS data suggested the phase purity and stability of compounds 1 and 2 in solution. Photoluminescence properties of compounds 1 and 2 have been investigated, considering their application in sensing explosive nitroaromatic compounds. Our results suggest that compound 1 is very selective in the chemical sensing of trinitrophenol (TNP) and dinitrophenol (DNP) in an aqueous medium compared to the reactivity of compound 2 . The existence of spectral overlap in the absorption spectra of 2,4‐dinitrophenol (DNP) and 2,4,6‐trinitrophenol (TNP) with the emission spectrum of 1 or 2 indicates the operation of the resonance electron transfer (RET) mechanism.
- 23 September 2024
- Published by Wiley in ChemistrySelect
- Vol. 9 (36)
Ligand Backbone Influenced Luminescent Properties of Mononuclear Zn(II)‐N3Py2 Compounds: Synthesis, Structures and Nitroaromatics Detection
Mononuclear Zn(II) compounds, [Zn(L 1 )](ClO 4 ) 2 ( 1 ) and [Zn(L 2 )](ClO 4 ) 2 ( 2 ), embedded with ligands, L 1 = N 1 ‐(pyridin‐2‐ylmethyl)‐ N 2 ‐(2‐((pyridin‐2‐ylmethyl)amino)ethyl)ethane‐1,2‐diamine and L 2 = N 1 ‐(pyridin‐2‐ylmethyl)‐ N 3 ‐(3‐((pyridin‐2‐ylmethyl)amino)propyl)propane‐1,3‐diamine are synthesized. Compound 1 is revisited, and structure‐function relation is compared with new compound 2 . Single crystal X‐ray analysis revealed that compound 1 crystallizes in the tetragonal non‐centrosymmetric P 4 1 space group while 2 crystallizes in a centrosymmetric monoclinic space group P 2 1 / c . The asymmetric unit consists of a crystallographically independent [Zn(L 1 )] 2+ cation in 1 while [Zn(L 2 )] 2+ cation in 2 and two unique perchlorate anions in both. IR spectra of 1 and 2 confirmed the vibrations due to organic ligands and tetrahedral perchlorates. PXRD confirmed the phase purity of powdered samples compared with theoretical PXRD patterns obtained from single‐crystal X‐ray diffraction data. NMR and ESI‐MS data suggested the phase purity and stability of compounds 1 and 2 in solution. Photoluminescence properties of compounds 1 and 2 have been investigated, considering their application in sensing explosive nitroaromatic compounds. Our results suggest that compound 1 is very selective in the chemical sensing of trinitrophenol (TNP) and dinitrophenol (DNP) in an aqueous medium compared to the reactivity of compound 2 . The existence of spectral overlap in the absorption spectra of 2,4‐dinitrophenol (DNP) and 2,4,6‐trinitrophenol (TNP) with the emission spectrum of 1 or 2 indicates the operation of the resonance electron transfer (RET) mechanism.
- 24 January 2024
- Published by Royal Society of Chemistry (RSC) in New Journal of Chemistry
- Vol. 48 (8) , 3472-3482
Weakly antiferromagnetic vanillin and acetate bridged dinuclear Ni(ii) compound exhibiting catecholase-like activity and biological properties
A dinuclear Ni(ii) compound, [Ni2(μ-van)2(μ-OAc)(NCS)3(H2O)]·5H2O 1 with p-vanillin and acetato bridging ligands have been structurally characterized and tested for catecholase-like and biological activities.
- 24 January 2024
- Published by Royal Society of Chemistry (RSC) in New Journal of Chemistry
- Vol. 48 (8) , 3472-3482
Weakly antiferromagnetic vanillin and acetate bridged dinuclear Ni(ii) compound exhibiting catecholase-like activity and biological properties
A dinuclear Ni(ii) compound, [Ni2(μ-van)2(μ-OAc)(NCS)3(H2O)]·5H2O 1 with p-vanillin and acetato bridging ligands have been structurally characterized and tested for catecholase-like and biological activities.