BITS Pilani

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Publications

Publications

  • Highly sensitive fluorescent imidazolium-based sensors for nanomolar detection of explosive picric acid in aqueous medium: Santosh Kumari, Sunita Joshi, Tania C. Cordova-Sintjago, D. D. Pant, Rajeev Sakhuja, Sensors and Actuators B: Chemical, 229 (2016) 599-608.
  • Interaction of 6-methoxyquinoline with anionic sodium dodecylsulfate micelles: Photophysics and rotational relaxation dynamics at different pH, Y. Tej Varma and D. D. Pant, Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy, 158 (2016) 9-17.
  • Fluorescence Quenching of a Benzimidazolium–based Probe for Selective Detection of Picric Acid in Aqueous Medium: Sunita Joshi, Santosh kumari, Eduardo Chamorro, D. D. Pant, and Rajeev Sakhuja, ChemSelect 1 (2016) 1-8
  • Experimental and theoritical study: determination of dipole moment of synthesized coumarin-triazole derivatives and application as turn off fluorescence sensor: high sensitivity for iron (III) ions. Sunita Joshi, Santosh Kumari, Rituparna Bhattacharjee Amrit Sarmah, Rajeev Sakhuja and D. D. Pant. Sensors and Actuators, B,  220 (2015) 1266-1278.
  • Estimation of ground and excited-state dipole moments of synthesized coumarin derivative, (S)-(1-((7-hydroxy-2-oxo-2H-chromen-4-yl)methyl)-1H-1,2,3-triazol-4-yl)methyl 2-(((9H-fluoren-9-yl)methoxy)cabonylamino)-3-phenylpropanoate from a solvatochromic shift and theoretical methods, Sunita Joshi, Santosh Kumari, Rituparna Bhattacharjee, Rajeev Sakhuja and D. D. Pant,  Journal of Molecular Liquids, 209 (2015) 219-223.
  • Solvent effect on absorption and fluorescence spectra of cinchonine and cinchonidine dications: Estimation of ground and excited state dipole moments by experimental and numerical studies. Ritika Sharma,  Sunit Joshi,  Rituparna BhattacharjeeD. D. Pant, Journal of Molecular Liquids, 206 (2015) 159-164.
  • Effect of nanosize micelles of ionic and neutral surfactants on the photophysics of protonated 6-methoxyquinoline: Time-resolved fluorescence study.Tej Varma Y, Sunita Joshi, and D. D. PantSpectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy,138 (2015) 818-826.
  • Interaction of quinine sulfate with anionic micelles of sodium dodecylsulfate: A time-resolved fluorescence spectroscopy at different pH, Sunita Joshi, D. D. Pant, Spectrochimica Acta Part A Molecular Spectroscopy, 148 (2015) 49-59.
  • Synthesis, Absorption, and Fluorescence Studies of Coumaryl-Labelled Amino Acids and Dipeptides Linked Via Triazole Ring. Santosh Kumari, Sunita Joshi, S. M. Abdul Shakoor, Devesh S. Agarwal, Siva S. Panda, D. D. Pant, Rajeev Sakhuja, Australian Journal of Chemistry, (2015)
  • Estimation of ground and excited state dipole moments of synthesized coumarin derivative [N-(2-oxo-2H-chromen-4-yl)imino]triphenyl-phosphorane. Sunita Joshi, Santosh Kumari, Rituparna Bhattacharjee, Rajeev Sakhuja and D. D. Pant. Journal of Molecular Liquids, 200 (2014) 115-119.
  • Steady state and time-resolved fluorescence spectroscopy of quinine sulfate dication bound to sodium dodecylsulfate micelles: Fluorescent complex formation. Sunita Joshi and D. D. Pant, Journal of Luminescence, 145 (2014) 224-231.
  • Steady state and time-resolved fluorescence spectroscopy of quinine sulfate dication in ionic and neutral micelles: Effect of micellar charge on photophysics. Sunita Joshi, Tej Varma Y and D. D. Pant, Colloids and Surfaces A: Physicochemical and Engineering Aspects, 425 (2013) 59– 67
  • Estimation of ground and excited state dipole moments of quinidine and quinidine dication: Experimental and numerical methods. Sunita Joshi, Rituparna Bhattacharjee, Tej Varma Y  and D. D. Pant, Journal of Molecular Liquids 179 (2013) 88–93.
  • Solvatochromatic shift of absorption and fluorescence spectra of 6-methoxyquinoline: Estimation of ground and excited state dipole moments. Tej Varma Y, Sunita Joshi, and D. D. Pant, Journal of Molecular Liquids 179 (2013) 7–11.
  • Ground and Excited State Dipole Moments of Quinine Sulfa te Dication.: Solvatochromic Shift of Absorption and Fluorescence Spectra . Sunita Joshi and D. D. Pant , Journal of Molecular Liquids 172 ( 2012 ) 125 - 129 .
  • Solvatochromic shift and estimation of dipole moment of quini ne su l fate dication.Sunita Joshi and D. D. Pant , International Journal of Chemical and Biological Engineering . 6(2012 ) 225 - 229.
  • Solvatochromic shift and estimation o f dipole moment of quinine sulf ate.Sunita Joshi and D. D. Pant, Journal of Molecular Liquids 166 (2012) 49 - 52
  • Surface second harmonic generation from coumarin 343 dye - attached TiO 2 nanoparticles at liquid - liquid interface.D. D. Pant, Sunita Joshi and Hubert H. Girault, Journal of Nanoparticle Research , 13 (2011) 7057 - 7064.
  • Edge Excitation Red Shift and Energy Migration in Quinine Bisulphate Dication. H. Mishra,  Debi. Pant , T. C. Pant and H. B. Tripathi. J. Pho tochem. Photobiol., A 177(2 - 3) (2006)197 - 204.
  • Time Resolved Total Internal Reflection Fluorescence Spectroscopy: Part I. Photophysics of Coumarin 343 at liquid/liquid interface. Debi Pant and Hubert H. Girault, Phys. Chem. Chem. Physics , 7 (2005) 345 7 - 3463.
  • The pH Dependent Adsorption of Coumarin 343 at the Water/Dichloroethane Interface. Debi Pant , Mireille Le Guennec, Bertrand Illien and Hubert H. Girau lt, Phys. Chem. Chem. Physics , 6 (2004) 3140 - 3146.
  • Polar Solvation Dynamics in Nonionic Reverse Micelles and Model Polymer Solutions . Debi Pant and Nancy E. Levinger, Langmuir , 26 (2000) 10123 - 10130.
  • Solvation Dynamics of Water and D 2 O at the Surface of Zirconia Nanoparticles. Debi Pant and Nancy E. Levinger, J. Phys. Chem. B , 103 (1 999) 7846 - 7852.
  • Influence of Restricted Environment and Ionic Interactions on Water Solvation Dynamics. Debi Pant , R. E. Riter and N. E. Levinger, J . Chem. Phys., 109 (1998) 9995.
  • Dynamics of Polar Solvation at the Surface of a ZrO 2 Nanoparticle . Debi Pant and N. E. Levinger, Chem.Phys. Lett . 292 (1998) 200.
  • Structure and intermolecular dynamics of liquids : Femtosecond optical Kerr effect measurements in non - polar fluorinated benzenes. Manickam Neelkandan. Debi Pant and Edward L. Quitevis, J . Phys. Chem. A , 101(1997)2936 - 2945.
  • Reorientational and intermolecular dynamics in binary liquid mixtures of hexafluorobenzene and benzene : femtosecond optical Kerr effect measurements. Manickam Neelkandan.  Debi Pant and Edward L. Quitevis, Chem. Phys. Lett . 265 (1997) 283 - 292.
  • Photophysics of cinchonine and cinchonidine. S. Pant, D. Pant . and H. B. Tripathi. J. Photochem. and Photobiol. A. Chem . 75 (1993) 137 - 141.
  • Time resolved fluorescence spectroscopy of quinine sulphate, quinidine and 6 - me thoxyquinoline: pH dependence.  Debi Pant , H.B.Tripathi and D.D. Pant. J. Lumin escence . 51 (1992) 223.
  • Photophysics of quinidine di cation in relation to quinine dication and 6 – methoxyquinoline monocation.  Debi Pant , H.B.Tripathi and D.D. Pant. J.Lumin inescence . 50 (19 91) 249.
  • Time dependent Stokes shift in charge transfer spectra of quinines and 6 - methoxyquinoline.Debi Pant Solvation dynamics and charge transfer Bagchi, (World scientific, Singapore) 1991, 115.
  • Excite d state solvation dynamics of 6 - methoxyquinoline. Debi Pant , H.B.Tripathi and D.D. Pant. J.Photochem. Photobiol. A. Chem . 56 (1991) 207.
  • Photo physics of protonated 6 - methoxyquinoline: Steady state and time dependent fluorescence.Debi Pant , H.B. Tri pathi and D.D. Pant. J. Photochem. Photobiol. A. Chem . 54 (1990) 239.
  • Photo physics of doubly charged quinine: Steady state and time dependent fluorescence.   Debi Pant, U.C. Tripathi, G.C. Joshi, H.B.Tripathi and D.D. Pant. J. Photochem. Photobiol. A. Chem . 51 (1990) 313.
Links to some of the Selected Publications:

Influence of restricted environment and ionic interactions on water solvation dynamics
D Pant, RE Riter, NE Levinger
The Journal of chemical physics 109 (22), 9995-10003
Polar solvation dynamics in nonionic reverse micelles and model polymer solutions
D Pant, NE Levinger
Langmuir 16 (26), 10123-10130
Structure and intermolecular dynamics of liquids: Femtosecond optical Kerr effect measurements in nonpolar fluorinated benzenes
M Neelakandan, D Pant, EL Quitevis
The Journal of Physical Chemistry A 101 (16), 2936-2945
Polar solvation dynamics of H2O and D2O at the surface of zirconia nanoparticles
D Pant, NE Levinger
The Journal of Physical Chemistry B 103 (37), 7846-7852
The pH dependent adsorption of Coumarin 343 at the water/dichloroethane interface
D Pant, M Le Guennec, B Illien, HH Girault
Physical Chemistry Chemical Physics 6 (12), 3140-3146

Photophysics of quinidine dication in relation to quinine dication and 6-methoxyquinoline monocation

D Pant, HB Tripathi, DD Pant
Journal of luminescence 50 (4), 249-257

Excited state solvation dynamics of 6-methoxyquinoline

D Pant, HB Tripathi, DD Pant
Journal of Photochemistry and Photobiology A: Chemistry 56 (2), 207-217

Dynamics of polar solvation at the surface of a ZrO< sub> 2</sub> nanoparticle

D Pant, NE Levinger
Chemical physics letters 292 (1), 200-206
Time resolved fluorescence spectroscopy of quinine sulphate, quinidine and 6-methoxyquinoline: pH dependence
D Pant, HB Tripathi, DD Pant
Journal of luminescence 51 (4), 223-230
Photophysics of doubly-charged quinine: Steady state and time-dependent fluorescence
D Pant, UC Tripathi, GC Joshi, HB Tripathi, DD Pant
Journal of Photochemistry and Photobiology A: Chemistry 51 (3), 313-325
Ground and excited state dipole moments of quinine sulfate dication: Solvatochromic shift of absorption and fluorescence spectra
S Joshi, D. D. Pant
Journal of Molecular Liquids 172, 125-129
Estimation of ground and excited state dipole moments of quinidine and quinidine dication: Experimental and numerical methods
S Joshi, R Bhattacharjee, T Varma Y, D. D. Pant
Journal of Molecular Liquids 179, 88-93
Solvatochromic shift and estimation of dipole moment of quinine sulfate
S Joshi, D. D. Pant
Journal of Molecular Liquids 166, 49-52
Steady state and time-resolved fluorescence spectroscopy of quinine sulfate dication bound to sodium dodecylsulfate micelles: Fluorescent complex formation

S Joshi, D. D. Pant
Journal of Luminescence 145, 224-231
Solvatochromatic shift of absorption and fluorescence spectra of 6-methoxyquinoline: Estimation of ground and excited state dipole moments
T Varma Y, S Joshi, D. D. Pant
Journal of Molecular Liquids 179, 7-11

Steady state and time-resolved fluorescence spectroscopy of quinine sulfate dication in ionic and neutral micelles: Effect of micellar charge on photophysics
S Joshi, D. D. Pant
Colloids and Surfaces A: Physicochemical and Engineering Aspects 425, 59-67
Surface second harmonic generation from coumarin 343 dye-attached TiO2 nanoparticles at liquid–liquid interface
D. D. Pant, S Joshi, HH Girault
Journal of Nanoparticle Research 13 (12), 7057-7063
 

In Conference Proceedings

Estimation of ground and excited state dipole moments of 6-methoxyquinoline from solvatochromic effect on absorption and fluorescence spectra
YT Varma, S Joshi, D. D. Pant, PROCEEDING OF INTERNATIONAL CONFERENCE ON RECENT TRENDS IN APPLIED PHYSICS, 1536 (2013) 1123-1124, AIP Publishing.

Solvatochromic study of quinidine: Determination of ground and excited state dipole moments
S Joshi, D. D. Pant , PROCEEDING OF INTERNATIONAL CONFERENCE ON RECENT TRENDS IN APPLIED PHYSICS, 1536 (2013) 797-798, AIP Publishing
 
Solvent effects on the absorption and fluorescence spectra of quinine sulphate: Estimation of ground and excited-state dipole moments
Joshi, Sunita; Pant, Debi D. SOLID STATE PHYSICS: Proceedings of the 56th DAE Solid State Physics Symposium 2011. AIP Conference Proceedings, Volume 1447, pp. 201-202 (2012).
  • Solvatochromic shift and estimation of dipole moment of quinine sulfate dication.Sunita Joshi and D. D. Pant, Conference Proceedings of ‘World Academy of Science , Engineering and Technology (WASET)’, Spain,  Volume   2011.

  • Solvatochromic effect on Absorption and Fluorescence Spectra of Quinine Sulfate dication: Estimation of dipole moment. Sunita Joshi and D. D. Pant, Conference Proceedings of ‘DST New Delhi Sponsored National Conference on Emerging Trends in Materials Science (ETRMS)  November 12-13, 2011. SKIT, Jaipur.

  • Photophysics of quinine sulphate dication in micellar environments, S. Joshi and D. D. Pant  International Journal of Physics and Mathematical Sciences (online) 2 (2012) 70-77.

  • Solvation Dynamics in Restricted Environments: Immobilization in Reverse Micelles, Ultrafast Phenomena XI, Proceedings of the XI Symposium on Ultrafast   Phenomena, Garmische-Partenkirchen. N. E. Levinger, R. E. Riter, D. M. Willard, and D. Pant, Germany, July12-17, 1998.

  • Ultrafast Solvation Dynamics At The Surfaces Of Semiconducting Nanoparticles Debi D. Pant,Proceedings of National Laser Symposium, 226. December 13-15, 2000. Page 226, Laser Science and Technology Centre, Metcalfe House, Delhi, India.

  • Solvation Dynamics at the surfaces of zirconium oxide nanoparticles. Debi Pant and Nancy Levinger, Proceedings of ‘Lasers and Material Science’, 40th Rocky Mountain Conference on Analytical Chemistry, July 26 through July 31, 1998, Denver, CO, USA.

  • Solvation Dynamics in nonionic reverse micelles. Debi Pant and Nancy Levinger, American Physical Society Meeting, March 20-24, Minneapolis convention centre Minneapolis, MN., USA

  • Intermolecular dynamics in binary liquid mixtures of C6H6 and C6F6: Femtosecond optical kerr effect measurements. Quitevis, E.L.; Neelakandan, M.; Pant, D. Book of abstracts, 212th ACS National Meeting, Orlando, FL, August 25-29 (1996), PhYs-085. Publisher: American Chemical Society, Washington, D.C, USA.

Invited / Oral / Poster Presentations

  • Excited State relaxation processes of fluorescent molecules in nano-size ionic and neutral micellar systems. 5th International Colloidal Conference , June 21-24, 2015, organized by ELSEVIER,  Amsterdam, Netherlands.
  • Interaction of 6-Methoxyquinoline with anionic sodium dodecylsulphate micelles , at 2nd International Turkish Congress on Molecular Spectroscopy, Sept. 13-18, 2015. Antalya, Turkey. Presented by Tej Varma
  • Interaction of 6-Methoxyquinoline with ionic and neutral surfactants; A time-resolved fluorescence study,  at International Conference on Luminescence (ICL), July 13-18, 2014. Worclaw, Poland. Presented by Tej Varma
  • Steady state and Time resolved fluorescence study of 6-methoxyquinoline monocation: Effect of micellar charge on photophysics. 7th International conference on Materials for Advance Technologies: ICMAT 2013 , SUNTEC Singapore. Presented by Tej Varma.
  • Solvatochromic study of quinidine: Determination of ground and excited state dipole in INTERNATIONAL CONFERENCE ON RECENT TRENDS IN APPLIED PHYSICS AND MATERIAL SCIENCE: RAM, 2013 at Bikaner.
  • Photophysics of Quinine Sulphate Dication in Micellar Environments” in ‘National conference on Condensed Matter Physics’, February 24-25, 2012 at BITS Pilani, Pilani.presented by Sunita Joshi.
  • Phtophysics at the Surfaces of Dye Sensitized Semiconducting Nanoparticles: Solvation Dynamics and Non-linear Optics” in National Conference on Dye Sensitized solar Cells’, March 01-3, 2012, at Jaipur Engineering College, Jaipur.
  • Photophysics of Fluorescent Molecules at Surfaces and Interfaces” in ‘National Conference on Condensed Matter Physics’, February 24-25, 2012 at BITS Pilani, Pilani.
  • Phtophysics at the Surfaces of Dye Sensitized Semiconducting Nanoparticles: Solvation Dynamics and Non-linear Optics” in National Conference on’ ‘Dye Sensitized Solar Cells‘’, March 01-3, 2012, at Jaipur Engineering Institute, Jaipur.
  • Solvent Effects on the Absorption and Fluorescence Spectra of Quinine Sulphate: Estimation of Ground and Excited State Dipole Moments, National Conference on Emerging Trends of Research in Materials Science, Nov.12-13, 2011, Swami Keshvanand Institute of Technology, management and Gramothan, Jaipur.
  • Time Resolved Total Internal Reflection Fluorescence Spectroscopy: Aggregation of Coumarin 343 at the interface, 9th International Conference on Methods and Applications of Fluorescence Sepctroscopy, September 4-7, 2005, Lisbon, Portugal.
  • Surface Second Harmonic Generation from Coumarin 343 dye molecules, 3èmeCycle Romand en Chimie Physique, summer school, September 22-26, 2003, Champery, Switzerland.
  • 3rd European Short Course on ‘Ultrafast dynamics of nanoparticles’, March 2005, Luzern, Switzerland.
  • 2nd European Short Course on ‘Principles and Applications of Time-resolved Fluorescence Spectroscopy’, PicoQuant, Berlin, Germany, November 2004.
  • 9th International Conference on Methods and Applications of Fluorescence Sepctroscopy, September 4-7, 2005, Lisbon, Portugal.
  • 11th International Workshop on ‘Single Molecule Spectroscopy’, PicoQuant, September 2005, Berlin, Germany.
  • Ultrafast Solvation Dynamics at the Surfaces of Semiconducting nanoparticles, National Symposium on Radiation and Photochemistry, February 21-23, 2001. University of Roorkee, Roorkee.
  • Dynamics at the Surfaces of Semiconducting nanoparticles, National Laser Symposium, Laser Science and Technology Centre, December 13 – 15, 2000, Metcalf House, Delhi.
  • Solvation dynamics of water at the surface of zirconium oxide nanoparticles, 40thRocky Mountain Conference on Analytical Chemistry, July 26 through July 31, 1998, Denver, CO, USA.
  • Fluorescence quenching of quinine sulphate in aqueous 1N H2SO4 solution at higher concentrations. Symposium on Radiation and Photochemistry, Jan. 27-31, 1992, BARC, Bombay, India.
  • Photophysics of quinine sulphate, quinidine and 6-methoxyquinoline: Effect of solute concentration. National Symposium on molecular spectroscopy, March 15-16, 1991, Varanasi, India.
  • Excited state solvation dynamics and charge transfer in 6-methoxyquinoline. National Symposium on Photoscience, April 4 -7, 1990, Nainital, India.
  • Excited state solvation dynamics of quinidine. IPA/DST seminar on laser spectroscopy, Dec. 11-15, 1989, Varanasi, India.

BOOK CHAPTERS:

  • Solvation Dynamics in Restricted Environments: Solvent Immobilization in Reverse Micelles
    NE Levinger, RE Riter, DM Willard, D Pant
    Ultrafast Phenomena XI, Springer Berlin Heidelberg, 553-555, 1998.
  • Time dependent Stokes shift in charge transfer spectra of quinines and 6-methoxyquinoline. Debi Pant, H.B. Tripathi and D.D. Pant. In “Solvation dynamics and charge transfer”. ed. B. Bagchi, (World scientific, Singapore) 1991, 115. 

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