LAKKANNA SHIVAJI CHOUGALA

Verified @gmail.com

Teaching Assistant, Department of Physics,
Department of Physics, Karnatak University, Dharwad-580003, India.

LAKKANNA SHIVAJI CHOUGALA


            Download Compact PDF  
https://researchid.co/lakkannakud
Dr. Lakkanna S Chougala is currently working as Teaching Assistant in the Department of Physics, Karnatak University, India. Lakkanna S Chougala research interest includes Material science, Synthesis and characterization of Nanoparticles, Photovoltaics, Fluorescence Quenching and Spectroscopic Investigations of organic and inorganic Materials.

EDUCATION

M.Sc, Ph.D

RESEARCH INTERESTS

Material science, Synthesis and characterization of Nanoparticles, Photovoltaics, Fluorescence Quenching and Spectroscopic Investigations of organic and inorganic Materials.
11

Scopus Publications

372

Scholar Citations

6

Scholar h-index

6

Scholar i10-index

Scopus Publications

  • Influence of substituent position in aromatic diamines on coumarin derivative
    J.M. Nirupama, Raveendra Melavanki, N.I. Khanapurmath, L.S. Chougala, M.V. Kulkarni, J.S. Kadadevarmath
    Journal of Photochemistry and Photobiology A Chemistry, 2022
  • Biogenic Synthesis and Characterization of ZnO Nanoparticles from Aloe barbadensis Miller Leaf Extract
    Vijayakumar D. Jangannanavar, Mallikarjun K. Patil, Lakkanna S. Chougala, Sanjeev R. Inamdar, Kotresh M. Goudar
    Macromolecular Symposia, 2021
    Abstract This study is aimed to synthesize zinc oxide nanoparticles (ZnO NPs) from Aloe barbadensis Miller leaf extract using the green synthesis method at room temperature. The biosynthesized NPs are characterized by X‐ray diffraction (XRD), UV–vis spectroscopy (UV–vis), Fourier transform infrared (FTIR) spectroscopy, and scanning electron microscope (SEM). The XRD pattern has revealed the hexagonal wurtzite structure with a crystallite size of 16 nm for synthesized ZnO NPs. The FTIR results display the formation of ZnO NPs and the presence of other functional groups. The UV–vis absorption spectrum shows an absorption band at 347 nm and the value of the bandgap is found to be 3.75 eV. The surface morphology of synthesized NPs is visualized by SEM images, it is observed that most of the NPs are needle in shape. Further, these NPs will find applications in biosensing and photocatalytic activity.
  • Role of Substituent Position in Coumarin Derivatives during their Interaction with TiO2 Nano Particles
    Nirupama M. Jagadeeshwar, Netravati I. Khanapurmath, Lakkanna S. Chougala, Manohar V. Kulkarni, Jagadish S. Kadadevarmath
    Journal of Fluorescence, 2021
    The effect of position of benzo group in coumarin derivatives, 5,6 benzo-4-azidomethyl coumarin (5BAMC) and 7,8 benzo-4-azidomethyl coumarin (7BAMC) during their interaction with TiO2 nanoparticles in ethyl acetate, tetrahydrofuran, butan-1-ol and acetonitrile solvents has been studied using different spectroscopic methods and electrochemical analysis. Benesi-Hildebrand plots indicate that nature of interaction between 7BAMC and TiO2 is 1:2 in solvent with low dielectric constant whereas for 5BAMC and TiO2, it is 1:1 in all the solvents. From the fluorescence quenching study and binding equilibria analysis, it is observed that interaction between 5BAMC and TiO2 depends on the dielectric constant of the solvent. Time resolved quenching study reveals that quenching is dynamic for 5BAMC in solvent with high dielectric constant. Whereas for 7BAMC, it is dynamic in solvent with low dielectric constant. Hence the nature of interaction of these two coumarin derivatives with TiO2 NPs is different. From electrochemical analysis, it is observed that, free energy change for electron transfer is more negative for 5BAMC-TiO2 compared to 7BAMC-TiO2 therefore quenching is more efficient for 5BAMC-TiO2 compared to 7BAMC-TiO2 system, which is also confirmed from fluorescence quenching studies. Non-radiative energy transfer rate is more than radiative energy transfer rate for both the systems according to FRET study.
  • Effect of stereo electronic factors of coumarin derivatives during their interaction with TiO2 nanoparticles
    J.M. Nirupama-, N.I. Khanapurmath, L.S. Chougala, M.V. Kulkarni, J.S. Kadadevarmath
    Journal of Molecular Liquids, 2019
  • Effect of amino anilines on the fluorescence of coumarin derivative
    J.M. Nirupama, N.I. Khanapurmath, L.S. Chougala, L.A. Shastri, R.F. Bhajantri, M.V. Kulkarni, J.S. Kadadevarmath
    Journal of Luminescence, 2019
  • Spectroscopic investigations of interaction between TiO2 and newly synthesized phenothiazine derivative-PTA dye and its role as photo-sensitizer
    Lakkanna S. Chougala, Jagadish S. Kadadevarmath, Atulkumar A. Kamble, Anand I. Torvi, Mahantesh S. Yatnatti, J.M. Nirupama, Ravindra R. Kamble
    Journal of Luminescence, 2018
  • (E)-N′-(4-nitrobenzylidene)-2-(1-(4-methoxyphenyl)-5-oxo-1H-1,2,4-triazol-4(5H)-yl)acetohydrazide: Synthesis, crystal structure, DFT and Hirshfeld surface analysis
    Shilpa M. Somagond, Ravindra R. Kamble, Saba Kauser J. Shaikh, S. Madan Kumar, Jagadeesh Prasad Dasappa, K. Byrappa, Praveen K. Bayannavar, Lakkanna S. Chougala, Jagadish S. Kadadevarmath
    Chemical Data Collections, 2018
  • Fluorescence Investigations on Interactions between 7,8-benzo-4-azidomethyl Coumarin and Ortho- and Para-phenylenediamines in Binary Solvent Mixtures of THF and Water
    Nirupama J.M., L. S. Chougala, N. I. Khanapurmath, A. Ashish, L. A. Shastri, M. V. Kulkarni, J. S. Kadadevarmath
    Journal of Fluorescence, 2018
    Fluorescence investigations on interactions between 7,8-benzo-4-azidomethyl coumarin (7BAMC) and quenchers ortho-phenylenediamine (OPD) and para-phenylenediamines (PPD) in binary solvent mixtures (THF + water) have been reported. UV-absorption study indicated a weak hydrophobic interaction between 7BAMC and the para isomer. NMR spectral studies indicated the presence of an interaction between 7BAMC and PPD. Magnitudes of the parameters associated with FRET, showed the presence of interactions between 7BAMC and PPD quencher is more predominant than OPD. Fluorescence quenching studies reveal the role of static and dynamic quenching pathways, depending upon Stern–Volmer constant, dielectric constant and dominant non-radiative processes. Binding equilibria analysis indicates a strong interaction between 7BAMC and PPD than OPD and formation of H-bonding. Based on the magnitudes of free energy, enthalpy change and entropy, bimolecular interaction process may be considered as spontaneous and hydrophobic.
  • Effect of TiO2 nanoparticles on newly synthesized phenothiazine derivative-CPTA dye and its applications as dye sensitized solar cell
    Lakkanna S. Chougala, Jagadish S. Kadadevarmath, Atulkumar A. Kamble, Praveen K. Bayannavar, Mahantesh S. Yatnatti, Ravi K. Linganagoudar, J.M. Nirupama, Ravindra R. Kamble, Qiquan Qiao
    Journal of Molecular Liquids, 2017
  • Photophysical, Electrochemical Studies of Novel Pyrazol-4-yl-2,3-dihydroquinazolin-4(1H)-ones and Their Anticancer Activity
    Atulkumar A. Kamble, Ravindra R. Kamble, Lakkanna S. Chougala, Jagadish S. Kadadevarmath, Shivaraj R. Maidur, Parutagouda S. Patil, Mahadev N. Kumbar, Sheetal B. Marganakop
    Chemistryselect, 2017
    A series of novel 2,3-dihydroquinazolin-4(1H)-ones 7 a-g were designed, synthesized and were characterized by IR, 1H & 13C NMR, MS, and elemental analysis. The optical and electrochemical properties have been studied using UV-Vis absorption, fluorescence spectroscopy, life time and cyclic voltammetry (CV) measurements. Quantum yield and effect of solvents for the compounds 7 a-g were investigated. Density Functional Theory (DFT) computations have been carried out for all the synthesized compounds and the computed values found to be approximately in close agreement with the experimental results. Further, the compounds 7 a, 7 d, 7 f and 7 g were evaluated for their anticancer activity at National Cancer Institute, NIH, Bethesda, USA and have shown moderate to good anticancer activities.
  • A simple approach on synthesis of TiO2 nanoparticles and its application in dye sensitized solar cells
    L. S. Chougala, , M. S. Yatnatti, R. K. Linganagoudar, R. R. Kamble, J. S. Kadadevarmath, , , , and
    Journal of Nano and Electronic Physics, 2017

RECENT SCHOLAR PUBLICATIONS

  • Fluorescence enhancement of chalcone derivatives, during their interaction with nanoparticles
    JM Nirupama, RG Kalkhambkar, SS Malunavar, LS Chougala
    Proceedings of the fifteenth national symposium on radiation and … , 2023
    2023
  • Influence of substituent position in aromatic diamines on coumarin derivative
    JM Nirupama, R Melavanki, NI Khanapurmath, LS Chougala, MV Kulkarni, ...
    Journal of Photochemistry and Photobiology A: Chemistry 422, 113560 , 2022
    2022
    Citations: 5
  • Biogenic Synthesis and Characterization of ZnO Nanoparticles from Aloe barbadensis Miller Leaf Extract
    VD Jangannanavar, MK Patil, LS Chougala, SR Inamdar, KM Goudar
    Macromolecular symposia 400 (1), 2100177 , 2021
    2021
    Citations: 11
  • Role of Substituent Position in Coumarin Derivatives during their Interaction with TiO 2 Nano Particles
    NM Jagadeeshwar, NI Khanapurmath, LS Chougala, MV Kulkarni, ...
    Journal of Fluorescence 31 (3), 775-785 , 2021
    2021
    Citations: 2
  • Effect of stereo electronic factors of coumarin derivatives during their interaction with TiO2 nanoparticles
    NI Khanapurmath, LS Chougala, MV Kulkarni, JS Kadadevarmath
    Journal of Molecular Liquids 291, 111266 , 2019
    2019
    Citations: 3
  • Effect of amino anilines on the fluorescence of coumarin derivative
    JM Nirupama, NI Khanapurmath, LS Chougala, LA Shastri, RF Bhajantri, ...
    Journal of Luminescence 208, 164-173 , 2019
    2019
    Citations: 12
  • Synthesis and Characterization of ZnO Nanoparticles and Its Application to Dye Sensitized Solar Cell
    LS Chougala, MS Yatnatti, RK Linganagoudar, JS Kadadevarmath
    Advanced Science Letters 24 (8), 5618-5623 , 2018
    2018
  • (E)-N′-(4-nitrobenzylidene)-2-(1-(4-methoxyphenyl)-5-oxo-1H-1, 2, 4-triazol-4 (5H)-yl) acetohydrazide: Synthesis, crystal structure, DFT and Hirshfeld surface analysis
    SM Somagond, RR Kamble, SKJ Shaikh, SM Kumar, JP Dasappa, ...
    Chemical Data Collections 13, 126-138 , 2018
    2018
    Citations: 4
  • Chemical Data Collections
    SM Somagond, RR Kamble, SKJ Shaikh, SM Kumar, JP Dasappa, ...
    2018
  • Spectroscopic investigations of interaction between TiO2 and newly synthesized phenothiazine derivative-PTA dye and its role as photo-sensitizer
    LS Chougala, JS Kadadevarmath, AA Kamble, AI Torvi, MS Yatnatti, ...
    Journal of Luminescence , 2018
    2018
    Citations: 10
  • Fluorescence Investigations on Interactions between 7,8-benzo-4- azidomethyl Coumarin and Ortho- and Para-phenylenediamines in Binary Solvent Mixtures of THF and Water
    N J.M, LS Chougala, NI Khanapurmath, A Ashish, LA Shastri, MV Kulkarni, ...
    Journal of Fluorescence 27 (136) , 2017
    2017
    Citations: 6
  • Simple Approach on Synthesis of ТІО 2 Nanoparticles and its Application in dye Sensitized Solar Cells.
    LS Chougala, MS Yatnatti, RK Linganagoudar, RR Kamble, ...
    J. Nano- Electron. Phys 9, 04005-1-04005-6 , 2017
    2017
    Citations: 277
  • Effect of TiO 2 nanoparticles on newly synthesized phenothiazine derivative-CPTA dye and its applications as dye sensitized solar cell
    LS Chougala, JS Kadadevarmath, AA Kamble, PK Bayannavar, ...
    Journal of Molecular Liquids 244, 97–102 , 2017
    2017
    Citations: 27
  • Модифікований метод вимірювання величини спонтанної поляризації сегнетоелектричних рідких кристалів
    ОВ Ковальчук, ОФ Шевчук
    Сумський державний університет , 2017
    2017
    Citations: 2
  • Photophysical, Electrochemical Studies of Novel Pyrazol-4-yl-2,3-dihydroquinazolin-4(1H)-ones and Their Anticancer Activity
    AA Kamble, RR Kamble, LS Chougala, JS Kadadevarmath, SR Maidur, ...
    ChemistrySelect 2, 6882–6890 , 2017
    2017
    Citations: 13

MOST CITED SCHOLAR PUBLICATIONS

  • Simple Approach on Synthesis of ТІО 2 Nanoparticles and its Application in dye Sensitized Solar Cells.
    LS Chougala, MS Yatnatti, RK Linganagoudar, RR Kamble, ...
    J. Nano- Electron. Phys 9, 04005-1-04005-6 , 2017
    2017
    Citations: 277
  • Effect of TiO 2 nanoparticles on newly synthesized phenothiazine derivative-CPTA dye and its applications as dye sensitized solar cell
    LS Chougala, JS Kadadevarmath, AA Kamble, PK Bayannavar, ...
    Journal of Molecular Liquids 244, 97–102 , 2017
    2017
    Citations: 27
  • Photophysical, Electrochemical Studies of Novel Pyrazol-4-yl-2,3-dihydroquinazolin-4(1H)-ones and Their Anticancer Activity
    AA Kamble, RR Kamble, LS Chougala, JS Kadadevarmath, SR Maidur, ...
    ChemistrySelect 2, 6882–6890 , 2017
    2017
    Citations: 13
  • Effect of amino anilines on the fluorescence of coumarin derivative
    JM Nirupama, NI Khanapurmath, LS Chougala, LA Shastri, RF Bhajantri, ...
    Journal of Luminescence 208, 164-173 , 2019
    2019
    Citations: 12
  • Biogenic Synthesis and Characterization of ZnO Nanoparticles from Aloe barbadensis Miller Leaf Extract
    VD Jangannanavar, MK Patil, LS Chougala, SR Inamdar, KM Goudar
    Macromolecular symposia 400 (1), 2100177 , 2021
    2021
    Citations: 11
  • Spectroscopic investigations of interaction between TiO2 and newly synthesized phenothiazine derivative-PTA dye and its role as photo-sensitizer
    LS Chougala, JS Kadadevarmath, AA Kamble, AI Torvi, MS Yatnatti, ...
    Journal of Luminescence , 2018
    2018
    Citations: 10
  • Fluorescence Investigations on Interactions between 7,8-benzo-4- azidomethyl Coumarin and Ortho- and Para-phenylenediamines in Binary Solvent Mixtures of THF and Water
    N J.M, LS Chougala, NI Khanapurmath, A Ashish, LA Shastri, MV Kulkarni, ...
    Journal of Fluorescence 27 (136) , 2017
    2017
    Citations: 6
  • Influence of substituent position in aromatic diamines on coumarin derivative
    JM Nirupama, R Melavanki, NI Khanapurmath, LS Chougala, MV Kulkarni, ...
    Journal of Photochemistry and Photobiology A: Chemistry 422, 113560 , 2022
    2022
    Citations: 5
  • (E)-N′-(4-nitrobenzylidene)-2-(1-(4-methoxyphenyl)-5-oxo-1H-1, 2, 4-triazol-4 (5H)-yl) acetohydrazide: Synthesis, crystal structure, DFT and Hirshfeld surface analysis
    SM Somagond, RR Kamble, SKJ Shaikh, SM Kumar, JP Dasappa, ...
    Chemical Data Collections 13, 126-138 , 2018
    2018
    Citations: 4
  • Effect of stereo electronic factors of coumarin derivatives during their interaction with TiO2 nanoparticles
    NI Khanapurmath, LS Chougala, MV Kulkarni, JS Kadadevarmath
    Journal of Molecular Liquids 291, 111266 , 2019
    2019
    Citations: 3
  • Role of Substituent Position in Coumarin Derivatives during their Interaction with TiO 2 Nano Particles
    NM Jagadeeshwar, NI Khanapurmath, LS Chougala, MV Kulkarni, ...
    Journal of Fluorescence 31 (3), 775-785 , 2021
    2021
    Citations: 2
  • Модифікований метод вимірювання величини спонтанної поляризації сегнетоелектричних рідких кристалів
    ОВ Ковальчук, ОФ Шевчук
    Сумський державний університет , 2017
    2017
    Citations: 2
  • Fluorescence enhancement of chalcone derivatives, during their interaction with nanoparticles
    JM Nirupama, RG Kalkhambkar, SS Malunavar, LS Chougala
    Proceedings of the fifteenth national symposium on radiation and … , 2023
    2023
  • Synthesis and Characterization of ZnO Nanoparticles and Its Application to Dye Sensitized Solar Cell
    LS Chougala, MS Yatnatti, RK Linganagoudar, JS Kadadevarmath
    Advanced Science Letters 24 (8), 5618-5623 , 2018
    2018
  • Chemical Data Collections
    SM Somagond, RR Kamble, SKJ Shaikh, SM Kumar, JP Dasappa, ...
    2018