Kural செறுநரைக் காணின் சுமக்க இறுவரை காணின் கிழக்காம் தலை.       In English: Bear with hostiles when you meet them Fell down their head in fateful time.

National Centre for Ultrafast Process

Faculty Profiles

Employee No:
Name:
Dr.P. Ramamurthy , M.Sc. Ph.D
Designation:
Director
Specialization:
Ultrafast spectroscopy, Nanomaterials, Photophysics and photochemistry of Organic molecules, Fluorescent Sensors.

Contacts

Address:

Office: HDirector, National Centre for Ultrafast Processes University of Madras Taramani Campus Chennai -600113

Residence:

Phone:

Off: 044-24547190, 24540962

Res:

Mobile: 9840480266

Email:

Achievements

  • Dr.Ramamurthy has started his academic career as a lecturer in the department of Inorganic chemistry in 1987 and contributed significantly in the field of Ultrafast Spectroscopy and Photosciences not only through his scientific publications but also dedicating himself to establish the National Centre for Ultrafast Processes with state of art facilitites, which is unique of its kind among University researchers in our country. His major areas of research interest are excited state electron transfer and photochemistry of a new family of laser dyes (NADH model compounds), and their reactions with electron donors and acceptors and excited state solvation dynamics of intramolecular charge transfer(ICT) state in homogenous and micro-heterogeneous environments and photonic nanomaterials.  
  • Dr.Ramamurthy has more than 95 research publications in high impact factor international and national journals to his credit. His work has been cited by several researchers world-wide. He has been awarded University Grants Commission Career Award in 1993 and Bronze Medal in 2002 by Chemical Research Society of India. He has been elected as fellow of National Academy of Sciences, Allahabad. He is a member of many professional bodies like, Chemical Research Society of India, Indian Society for Radiation and Photochemical Sciences and Indian Photobiology Society. He has delivered scientific talks in international and national conferences like Asian Photochemistry Conference
  • He has completed 11 research projects with financial support from different funding agencies like DST Young Scientist, DST-IRHPA, CSIR, UGC, DAE,ISRO,DST-SERC which has mobilized research grants to the tune of Rs.535 lakhs to the University of Madras. Currently, he has one ongoing projects from DST-EU with the financial sanction to the tune of Rs.150 lakhs. The research grants mobilized has facilitated him to setup the excellent state-of-art facilities at National Centre for Ultrafast Processes for the Ultrafast Research. To his credit he has produced 11 Ph.D students and 9 Ph.D students are currently working. He has initiated the M.Sc. teaching programme in a multidisciplinary area ?Photonics and Biophotonics? with the financial support from University Grants Commission under Innovative Research and Teaching Programme.

Membership

National

  • Indian Photobiology Society
  • Indian Society for Radiation and Photochemistry
  • Chemical Research Society of India
  • Indian Laser Association

Projects (Total Projects : 12)

  • Title : Design of NADH model based fluorescence chemosensors and investigations on their excited state behavior.
    Duration : 2006-2009
    Funding Agency : DST
    Amount Sanctioned (in Lakhs.) : 32
  • Title : UGC Innovative teaching and research programme in Interdisciplinary area: Photonics and Biophotonics. 
    Duration : 2004-2009
    Funding Agency : UGC
    Amount Sanctioned (in Lakhs.) : 29
  • Title : Caged and capped semiconductor nanoparticles: An investigation of their luminescence behavior and light induced multicomponent electron transfer processes across silicon layers.
    Duration : 2003-2007
    Funding Agency : DRDO
    Amount Sanctioned (in Lakhs.) : 23
  • Title : Femtosecond Up-Conversion facility
    Duration : 2003-2008
    Funding Agency : DST-IRHPA
    Amount Sanctioned (in Lakhs.) : 105
  • Title : Excited State Electron Transfer Reactions of Pyrylium Derivatives with organic sulphides
    Duration : 2002-2005
    Funding Agency : CSIR
    Amount Sanctioned (in Lakhs.) : 10
  • Title : Establishment of National Centre for Ultrafast Processes.
    Duration : 1997-2002
    Funding Agency : DST-IRHPA
    Amount Sanctioned (in Lakhs.) : 312
  • Title : Excited State Reaction of decahydroacridinedione dyes: A new family of photoinitiators for photopolymerisation reactions.
    Duration : 1996-1999.
    Funding Agency : ISRO
    Amount Sanctioned (in Lakhs.) : 5
  • Title : Excited State Electron Transfer Reactions of Pyrylium salts with heavy atom substituted electron donors: A special emphasis on the magnetic field effect.
    Duration : 1995-1998
    Funding Agency : DAE
    Amount Sanctioned (in Lakhs.) : 5
  • Title : Excited Reactions of Acridinedione Dyes with amines.
    Duration : 1994-1997
    Funding Agency : UGC
    Amount Sanctioned (in Lakhs.) : 2
  • Title : Photosensitization Studies of Industrially important triarylsulphonium salts. 
    Duration : 1993-1997
    Funding Agency : CSIR
    Amount Sanctioned (in Lakhs.) : 4
  • Title : Studies on the Reactions of Photogenerated Nitrate Radical with biologically important and atmospheric organic compounds. Funding Agency: DST Young Scientist
    Duration : 1991-1993
    Funding Agency : DST
    Amount Sanctioned (in Lakhs.) : 2
  • Title : Organic-Inorganic hybrid solar cells:Optimization of materials properties, bulk heterojunction morphology and device efficiencies
    Duration : 2011-2014
    Funding Agency : DST
    Amount Sanctioned (in Lakhs.) : 155

Publications

Articles (Total Articles: 96)

  • Flash Photolysis study of the oxygenation of cobalt (II)-amine complexes: Evidence for the formation of a μ-superoxo dinuclear complex.,  P. Ramamurthy, P. Natarajan,  J. Chem. Soc., Chem. Commun.,  (1985),  1554-1555
  • Photochemical Reactions of cobalt(III)-amine complexes in non-aqueous solvents: Mechanistic details of the oxygenation of cobalt(II) systems.,  P. Ramamurthy, P. Natarajan,  Inorganic Chemistry,  25,  (1986),  3554-3560
  • Photochemistry of some cobalt(III)-amine complexes: Effect of environment on the reactions of excited state.,  P. Natarajan, P. Ramamurthy,  Proc. Indian natn. Sci. Acad.,  52A,  (1986),  865-874
  • Photochemistry of Nitrate ion in acetonitrile.,  N. Meera, P. Ramamurthy,  Chem. Phys. Lett.,  153,  (1988),  13-16
  • Photochemical Reactions of cobalt(III)-amine complexes in non-aqueous solvents: Mechanistic details of the oxygenation reaction of cobalt(II) systems -II,  P. Ramamurthy, A. Radhakrishnan, R. Vijayaraghavan, P. Natarajan,  Indian J. Chem.,  29A,  (1990),  1-5
  •   Photoinsertion of dioxygen in trans-[Co(tet-a)(NO2)2]+ and trans-[Co(tet-b)(NO2)2]+ in acetonitrile: A laser flash photolysis study.,  P. Ramamurthy,  Inorg. Chim. Acta,  175,  (1990),  23-25
  • Studies on the Photochemically produced metal complexes with coordinated free radicals.,  E. Natarajan, P. Ramamurthy, P. Natarajan,  Proc. Indian Acad. Sci (Chem. Sci.),  102,  (1990),  319-328
  • Photochemical studies on manganese-quinone complexes: Part I-Photoinduced intramolecular electron transfer in bis(aquo)bis(phthiocolato) manganese(II).,  R. Yernade, M. Mular, S. Padhye, P. Ramamurthy, P. Natarajan,  Ind. J. Chem.,  30A,  (1991),  575-578
  • Photochemistry of aqueous and non-aqueous solutions of nitrate.,  P. Ramamurthy,  Proc. Indian Natn Sci. Acad.,  58,  (1992),  275-285
  • Excited State Reactions of Triphenylpyrylium ion with cinnamate derivatives. Triplet mediated isomerisation and singlet mediated dimerisation.,  P. Ramamurthy, F. Morlet-Savary, J.P. Fouassier,  J. Chem. Soc., Faraday Trans.,  89,  (1993),  465-469
  • Build your data station for fast kinetic equipments,  P. Ramamurthy,  Chem. Educ.,  9,  (1993),  56-60
  • Computer Aided learning of Periodic Table through dBASEIII plus,  P. Ramamurthy, A.S. Kanmani,  Chem. Educ.,  9,  (1993),  34-42
  • Spin-orbit coupling induced triplet formation of triphenylpyrylium ion: A flash photolysis study,  P. Ramamurthy, S. Parret, F. Morlet-Savary, J.P. Fouassier,  J. Photochem. Photobiol., A: Chem.,  83,  (1994),  205-209
  • Two-step reduction of indigo carmine by dithionite: A stopped-flow study,  N. Srividya, G. Paramasivan, K. Seetharaman, P. Ramamurthy,  J. Chem. Soc., Faraday Trans.,  90,  (1994),  2525-2530
  • Reactions of nitrate radical with amino acids in acidic aqueous medium: a flash photolysis investigation.,  B. Venkatachalapathy, P. Ramamurthy,  J. Photochem. Photobiol. A: Chem.,  93,  (1996),  1-5
  • Flash photolysis study of 2,4,6-trimethylpyrylium and 2,4,6-triphenylpyrylium ions: evidence for oxoniabenzvalene intermediate.,  A. Sivakumar, S. Parimala, P. Ramamurthy,  J. Photochem. Photobiol. A: Chem.,  94,  (1996),  129-133
  • Synthesis of Acridinedione derivatives as Laser Dyes.,  P. Shanmugasundaram, P. Murugan, V.T. Ramakrishnan, N. Srividya, P. Ramamurthy,  Heteroatom Chem.,  7,  (1996),  17-22
  • Synthesis, Characterization and Electrochemistry of some Acridine-1,8-dione dyes.,  N. Srividya, P. Ramamurthy, P. Shanmugusundaram, V.T. Ramakrishnan,  J. Org. Chem.,  61,  (1996),  5083-5089
  • Kinetics and spectral chracteristics of transient species formed on one-electron oxidation of acridine-1,8-dione in aqueous solution. Pulse radiolysis study.,  Hari Mohan, N. Srividya, P. Ramamurthy, J.P. Mittal,  J. Chem. Soc., Faraday Trans.,  92,  (1996),  2353-2359
  • One electron reduction of acridine-1,8-dione in aqueous solution: A pulse radiolysis study.,  H. Mohan, N. Srividya, P. Ramamurthy, J.P. Mittal,  J. Phys. Chem. A,,  101,  (1997),  2931-2935
  • Photochemical synthesis of s-Triazolor[3,4-b]benzothiazole and mechanistic studies on benzothiazole formation.,  G. Jayanthi, S. Muthusamy, R. Paramasivam, V.T. Ramakrishnan N.K. Ramamsamy, P. Ramamurthy,  J. Org. Chem.,  62,  (1997),  5766-5770
  • Solvent effects on the absorption and fluorescence spectra of some acridinedione dyes: determination of ground and excited state dipole moments.,  N. Srividya, P. Ramamurthy, V.T. Ramakrishnan,  Spectrochim. Acta: Part A,  53,  (1997),  1743-1753
  • Micellar effect on the photoinduced electron transfer reactions of ruthenium (II)- polypridyl complexes with phenolate ions. Effect of cetylrimethylammonium chloride,  T.Rajendran, S.Rajagopal, C.Srinivasan, P.Ramamurthy,  J. Chem. Soc. Faraday Trans.,  93,  (1997),  3155-3160
  • Marcus Inverted Region in the photoinduced electron transfer reactions of ruthenium (II)- polypridyl complexes with phenolate ions.,  P.Thanasekaran, T.Rajendran, S.Rajagopal, C.Srinivasan, R.Ramaraj. P.Ramamurthy, B.Venkatachalapathy,  J.Phys. Chem. A.,  101,  (1997),  8195-8199
  • Excited Singlet State Reactions of Triphenylpyrylium ion with electron donors: Evidence for electron transfer and observation of Marcus inverted region for the charge shift in the radical pair.,  S.S Jayanthi, P.Ramamurthy,  J.Phys. Chem. A.,  101,  (1997),  2016-2022
  • Reactions of H, OH, O- and specific one electron oxidants with 3,3,6,6-tetramethyl-3,4,6,7,9,10-hexahydro-(1,8)(2H,5H) - acridinedione: Ground and Excited state and transient acid-base properties.,  Hari Mohan, J.P. Mittal, B.Venkatachalapathy, N.Srividya, P.Ramamurthy,  J. Chem. Soc. Faraday Trans.,  93,  (1997),  4269-4274
  • Ground and excited state acid -base properties of acridine-1,8-dione dyes,  B.Venkatachalapathy, P.Ramamurthy, V.T.Ramakrishnan,  J. Photochem. Photobiol. A: Chem.,  111,  (1997),  163-169
  • Photophysical studies of acridine (1,8)dione dyes: A new class of laser dyes.,  N.Srividya, P.Ramamurthy, V.T Ramakrishnan,  Spectrochim. Acta: Part A,  54,  (1998),  245-253
  •   Excited singlet state reactions of thiopyrylium with electron donors: Electron transfer, Induction of triplet by internal and external heavy atom effect, and comparision of pyrylium and Thiopyrylium Reactions,  S.S Jayanthi, P.Ramamurthy,  J.Phys. Chem. A.,  102,  (1998),  511-518
  • Synthesis and Laser properties of 9-alkyl-3,3,6,6-tetramethyl decahydroacridine-1,8-dione derivatives,  P.Murugan, P.Shanmugasundaram, V.T. Ramakrishnan, B.Venkatachalapathy, N.Srividya, P.Ramamurthy, K.Gunasekaran, D.Velmurugan,  J. Chem. Soc. Perkin Trans.2,  (1998),  999-1003
  • Excited Singlet state reactions of phenosafranine with electron donors: Role of heavy atom effect in triplet induction.,  S.S Jayanthi, P.Ramamurthy,  J. Chem. Soc., Faraday Trans.,  94,  (1998),  1675-1679
  • One electron Reduction of 3,3,6,6-tetramethyl-3,4,6,7,9,10-hexahydro-(1,8)-(2H,5H)-acridinedione: A pulse ratiolysis study.,  H. Mohan, J.P. Mittal, N. Srividya, P. Ramamurthy,  J. Phys. Chem. A,  102,  (1998),  4444 -4449
  • Reactions of malononitrile with enones,  P. Murugan, P. Shanmugasundaram, V.T. Ramakrishnan, N. Srividya, P. Ramamurthy.,  Indian J. Chem. Sec. B,,  37B,  (1998),  737-741
  • Binding of Acridinedione dyes with α, β and γ-Cyclodextrins: Fluorescence quenching and Estimation of Thermodynamic Parameters.,  P. Karunanithi, P. Ramamurthy, V.T. Ramakrishnan,  J. Incl. Phenom. Macrocycl. Chem.,  34,  (1999),  105-114
  • Excited State proton and electron transfer reactions of acridinedione dyes with amines.,  B. Venkatachalapathy, P. Ramamurthy,  Phys. Chem. Chem. Phys.,  1,  (1999),  2223-2230
  • meso-Aryl sapphyrins with heteroatoms; synthesis, characterization, spectral and electrochemical properties.,  Srinivasan, S.K. Puspan M. Ravikumar, S. Mahajan, T.K. Chandrasekar, R.Roy, P. Ramamurthy,  J. Chem. Soc., Perkin Trans. 2,  (1999),  961-968
  • Kinetics of oxidation of glycine and related substrates by diperiodatoargentate(III).,  A. Kumar, P. Kumar, P. Ramamurthy,  Polyhedron,  18,  (1999),  773-780
  • Kinetics of oxidation of glycine and related substrates by diperiodatoargentate(III).,  A. Kumar, P. Kumar, P. Ramamurthy,  Polyhedron,  18,  (1999),  773-780
  • Photoinduced electron transfer reactions of 2,4,6-triphenylpyrylium: Solvent effect and charge-shift type of systems.,  S.S. Jayanthi, P. Ramamurthy,  Phys. Chem. Chem. Phys.,  1,  (1999),  4751-4757
  • Kinetic, Spectral and redox properties of the transients formed on one-electron reduction of 3,3,6,6-tetramethyl-3,4,6,7,9-pentahydro-10-phenyl (1,8) (2H, 5H) acridinedione in aqueous-organic mixted solvent system. A pulse radiolysis study.,  H. Mohan, N. Srividya, P. Ramamurthy,  Res. Chem. Intermed.,  26,  (2000),  455-467
  • Photoxidation of acridine(1,8)dione Dyes: Flash Photolysis Investigation on the mechanistic details.,  N. Srividya, P, Ramamurthy, V.T. Ramakrishnan,  Phys. Chem. Chem. Phys.,  2,  (2000),  5120-5126
  • Kinetics and mechanism of oxidation of ethylenediamine by diperiodatoargentate (III) ion,  Anil Kumar, Vaishali, P. Ramamurthy,  Int. J. Chem. Kinet.,  32,  (2000),  1-8
  • Excited State reactions of acridinedione dyes with onium salts: mechanistic details.,  C. Selvaraju, A. Sivakumar, P. Ramamurthy,  J. Photochem. Photobiol. A: Chem.,  138,  (2001),  213-226
  • Inclusion of Resorcinol-based Acridinedione dyes in Cyclodextrins: Fluorescence enhancement,  V.K. Indirapriydharshini, P. Karunanithi, P. Ramamurthy,  Langmuir,  17,  (2001),  4056-4060
  • Kinetics of oxidation of 3-aminopropan-1-ol and related compounds by silver(III) species,  Anil Kumar , Vaishali, P.Ramamurthy,  J. Chem. Soc., Perkin Trans. 2,  2,  (2001),  1174-1179
  • Steric Effects in the Photoinduced Electron Transfer Reactions of Ruthenium(II)-Polypyridine Complexes with 2,6-Disubstitutedphenolate Ions.,  T.Rajendran, P.Thanasekaran, S.Rajagopal, G.Allen Gnanaraj, C.Srinivasan, P.Ramamurthy, B.Venkatachalapathy, B.Manimaran, K.L.Lu,,  Phys.Chem.Chem. Phys.,  3,  (2001),  2063-2069
  • Solvent effects and photophysical studies of a new class of acridine(1,8)dione dyes.,  V. Karunakaran, P. Ramamurthy, T. Josephrajan, V.T. Ramakrishnan,  Spectrochim. Acta: Part A,  58,  (2002),  1443-1451
  • Spectral and photophysical properties of 1,6-naphthyridine derivatives: a new class of compounds for nonlinear optics.,  V.K. Indirpriyadharshini, P. Ramamurthy, V. Raghukumar, V.T. Ramakrishnan,  Spectrochim. Acta: Part A,  58,  (2002),  1535-1543
  • Excited state behaviour of acridinedione dyes in PMMA matrix: Inhomogeneous broadening and enhancement of triplet,  V. Thiagarajan C. Selvaraju P. Ramamurthy,  J. Photochem. Photobiol. A: Chem.,  157,  (2003),  23-32
  • Synthesis of nicotinonitrile derivatives as a new class of NLO materials,  V. Raghukumar, D. Thirumalai , V.T. Ramakrishnan , V. Karunakaran, P. Ramamurthy,  Tetrahedron,  59,  (2003),  3761-3768
  • Interaction of 1,8-acridinedione dye with urea dimer in methanol,  C. Selvaraju V. Thiagarajan, P. Ramamurthy,  Chem. Phys. Lett.,  379,  (2003),  437-442
  • Excited-State Behavior and Photoionization of 1,8-Acridinedione Dyes in Micelles—Comparison with NADH Oxidation,  C. Selvaraju, P. Ramamurthy,  Chem. Eur. J.,  10,  (2004),  2253-2262
  • A Novel Fluorophore With Dual Fluorescence: LE State and PET Promoted CT State,  V. Thiagarajan C. Selvaraju, E. J. Padma Malar, P. Ramamurthy,  ChemPhysChem,  5,  (2004),  1200-1209
  • Photoinduced electron transfer reactions of ruthenium(II) complexes containing 2,2’-bipyridine-4,4’-dicarboxylic acid with phenols: Steric charge effects,  K. Swarnalatha, E. Rajkumar, S. Rajagopal, R. Ramaraj, Y.-L.Lu, K.-L.Lu, P. Ramamurthy,  J.Photochem. Photobiol. A: Chem.,  171,  (2005),  83-94
  • A novel colorimetric and fluorescent chemosensor for anions involving PET and ICT pathways,  V. Thiagarajan P. Ramamurthy D. Thirumalai V.T. Ramakrishnan,  Org. Lett.,  7,  (2005),  657-660
  • Investigations on Thermotropic Liquid Crystalline Polyphosphates containing photoreactive dual mesogens,  K. Rameshbabu P.Kannan R.Velu, P.Ramamurthy,  Liquid Crystals,  32,  (2005),  823-832
  • Antioxidant activity measured in different solvent fractions obtained from Mentha spicata Linn: An analysis by ABTS. + decolorization assay,  P. Arumugam P. Ramamurthy S.T. Santhiya, A. Ramesh,  Asia Pacific J. Clin. Nut.,  15,  (2006),  119-124
  • PET suppression of Acridinedione Dyes by Urea Derivatives in water and methanol,  R. Kumaran, P.Ramamurthy,  J. Phys. Chem. B,  110,  (2006),  23783-23789
  • Fencing of Photoinduced Electron Transfer in Nonconjugated bicromophoric system by B-Cyclodextrin Nanocavity,  V.Thiagarajan V.K. Indirapriyadharsini, P.Ramamurthy,  J. Incl. Phenom. Macrocycl. Chem.,  56,  (2006),  309-313
  • Anomalous Association and Fluorophore Influence on the position of Dimethylaniline in micelles: Fluorescence quenching of 1,8-Acridinedione,  T.Shanmugapriya C.Selvaraju, P.Ramamurthy,  Spectrochim. Acta: Part A,  66,  (2007),  761-767
  • Fluorescence anisotropy of acridinedione dyes in glycerol: Prolate model of ellipsoid,  V.K. Indirapriydharsini, P. Ramamurthy,  J. Chem. Sci.,  199,  (2007),  1-8
  • Specific optical signaling of anions via intramolecular charges transfer pathway based on acridinedione fluorophore,  V.Thiagarajan, P.Ramamurthy,  J. Luminescence,  126,  (2007),  886-892
  • Dual fluorescence in a Schiff Base Derived from an Acridinedione Dye: Excited State Intramolecular Proton Transfer,  V.Thiagarajan, P.Ramamurthy,  Bull. Chem. Soc. Jpn.,  80,  (2007),  1-9
  • Fluorescence Sensing of anions with acridinedione based neutral PET Chemosensor,  V.Thiagarajan, P.Ramamurthy,  Spectrochim. Acta: Part A,  67,  (2007),  772-777
  • An approach for optimizing the Shell Thickness of Core-Shell Quantum Dots using Photoinduced Charge Transfer,  R.Vinayakan, T.Shanmugapriya Prathesh V. Nair, P.Ramamurthy, K.George Thomas,  J. Phys. Chem. C,  111,  (2007),  10146-10149
  • Rotational Dynamics of UVITEX-OB in alkanes, alcohols and binary mixtures,  J.R. Mannekutla P.Ramamurthy B.G. Mulimani, S.R.Inamdar,  Chem. Phys.,  340,  (2007),  149-157
  • Boron isotope distribution in laser deposited thin films of B4C,  P. Manoravi M. Joseph A.K. Balamurugan S. Rajagopalan, P. Ramamurthy,  Ind. J. Pure and Appl Phys.,  45,  (2007),  131-134
  • Synthesis, characterization, electrochemical and photophysical properties of bimetallic complexes of rhenium(I) and osmium(II),  M.Velayudham M.Rajkumar S.Rajagopal, P.Ramamurthy,  Polyhedron,  27,  (2008),  3417-3424
  • Photoluminescence study of (Tri-8-hydroxyquinoline)aluminium thin films and influence and swift heavy ion irradiations.,  K.Thangaraju R.Kumaran K. Ashokan P.Ramamurthy D.Kanjilal, J. Kumar,  Polym. Plas. Tech. and Eng.,  47,  (2008),  479-482
  • Photoinduced electron transfer reactions of pyrylium derivatives with organic sulfides in acetonitrile,  I.Sadhiya Banu, P. Ramamurthy,  J. Photochem. Photobiol. A: Chem.,  201,  (2009),  175-182
  • Triple fluorescence of acridinedione: Locally excited, photoinduced electron transfer promoted charge transfer and anion induced charge transfer states,  P. Ashokkumar, V. Thiagarajan, S. Vasanthi, P. Ramamurthy,  J. Photochem. Photobiol. A: Chem.,  208,  (2009),  117–124
  • Specific Ca2+ fluorescent sensor: Signaling by conformationally induced PET suppression in a bichromophoric acridinedione,  P. Ashokkumar, V. T. Ramakrishnan, P. Ramamurthy,  Eur. J. Org. Chem.,  (2009),  5941–5947
  • Synthesis, characterization and photophysics of alkyne bridged bimetallic rhenium(I) and ruthenium(II) complexes,  M. Velayudham, S. Singaravadivel, S. Rajagopal, P. Ramamurthy,  J. Organomet. Chem.,  694,  (2009),  4076–4083
  • Photophysics of ruthenium(II) complexes carrying amino acids in the ligand 2,2’-bipyridine and intramolecular electron transfer from methionine to photogenerated Ru(III),  E. Rajkumar, S. Rajagopal, P. Ramamurthy, M. Vairamani,  Inorg. Chim. Acta,  362,  (2009),  1629–1636
  • Effect of swift heavy ion irradiation on photoluminescence of Tris-(8-hydroxyquinoline) aluminum thin films,  K. Thangaraju, R. Kumaran, K. Asokan, P. Ramamurthy, D. Kanjilal, J. Kumar,  Surf. Coat. Tech.,  203,  (2009),  2679–2681
  • Photophysical studies of PET based acridinedione dyes with globular protein: Bovine serum albumin,  R. Kumaran, P. Ramamurthy,  J. Luminescence,  130,  (2010),  1203-1210
  • Photophysical studies on the interaction of acridinedione dyes with universal protein denaturant: Guanidine hydrochloride,  R. Kumaran, T. Varalakshmi, E. J. Padma Malar, P. Ramamurthy,  J. Fluoresc.,  20,  (2010),  993–1002
  • Molecular folding induced nanogold aggregation,  R. Velu, P. Ashokkumar, V. T. Ramakrishnan, P. Ramamurthy,  Tetrahedron Lett.,  51,  (2010),  3102–3105
  • Unprecedented formation of an N-benzamidobisthiourea derivative and its role in the formation of a new CT state specific towards fluoride ion,  R. Koteeswari, P. Ashokkumar, V. T. Ramakrishnan, E. J. Padma Malar, P. Ramamurthy,  Chem. Commun.,  46,  (2010),  3268–3270
  • Colorimetric and fluorometric chemosensors for selective signaling toward Ca2+ and Mg2+ by aza-crown ether acridinedione-functionalized gold nanoparticles,  R. Velu, V. T. Ramakrishnan, P. Ramamurthy,  Tetrahedron Lett.,  51,  (2010),  4331-4335
  • Antioxidant and cytotoxic activities of liphophilic and hydrophilic fractions of menthespicata L. (Lamiaceae),  P. Arumugam, P. Ramamurthy, A. Ramesh,  International Journal of Food Properties,  13,  (2010),  23–31
  • Acridinedione-functionalized gold nanoparticles and model for the binding of 1,3-dithiol linked acridinedione on gold clusters,  R. Velu, E. J. Padma Malar, V. T. Ramakrishnan, P. Ramamurthy,  Tetrahedron Lett.,  51,  (2010),  5680-5685
  • Fluorescence spectroscopic evidence for hydrogen bonding and deprotonation equilibrium between fluoride and a thiourea derivative,  P. Ashokkumar, V. T. Ramakrishnan, P. Ramamurthy,  Chem. Eur. J.,  16,  (2010),  13271-13277
  • Proton coupled electron transfer reaction of phenols with excited state ruthenium(II) – polypyridyl complexes,  K. Swarnalatha, E. Rajkumar, S. Rajagopal, R. Ramaraj, I. Sadhiya Banu, P. Ramamurthy,  J. Phys. Org. Chem.,  24,  (2011),  14-21
  • Solvent-controlled metal ion binding selectivity and anion interaction of the acridinedione- based heteroditopic host,  P. Ashokkumar, V. T. Ramakrishnan, P. Ramamurthy,  J. Phys. Chem. B,  115,  (2011),  84-92
  • Head-to-Tail Intermolecular Hydrogen bonding of OH and NH groups with Fluoride,  P. Ashokkumar, V. T. Ramakrishnan, P. Ramamurthy,  ChemPhysChem,  12,  (2011),  389-396
  • Synthesis of CdS nanorods and nanospheres: Shape tuning by controlled addition of a sulfide precursor at room temperature,  T. Shanmugapriya, R. Vinayakan, K. George Thomas, P. Ramamurthy,  CrystEngComm,  13,  (2011),  2340-2345
  • Selective fluoride ion recognition by a thiourea based receptor linked acridinedione functionalized gold nanoparticles,  R. Velu, V. T. Ramakrishnan, P. Ramamurthy,  J. Photochem. Photobiol. A: Chem.,  217,  (2011),  313-320
  • Optical switching, photophysical, and electrochemical behaviors of pendant triazole-linked indolylfulgimide polymer,  S. Nithyanandan, P. Kannan, K. Senthil kumar P. Ramamurthy,  J. Polym. Sci. Part A: Polym. Chem.,  49,  (2011),  1138-1146
  • Holographic grating studies in pendant xanthene dyes containing poly(alkyloxymethacrylate)s,  S. Manickasundaram, P. Kannan, R. Kumaran, R.Velu, P. Ramamurthy, Q.M.A. Hassan, P.K. Palanisamy, S. Senthil, S. Sriman Narayanan,  Journal of Materials Science: Materials in Electronics,  22,  (2011),  25-34
  • Denaturation Mechanism of BSA by Urea Derivatives: Evidence for Hydrogen-Bonding Mode from Fluorescence Tools,  R. Kumaran, P. Ramamurthy,  J. Fluoresc.,  21,  (2011),  1499–1508
  • Photophysical Studies on the Interaction of Formamide and Alkyl Substituted Amides with Photoinduced Electron Transfer (PET) Based Acridinedione Dyes in Water,  R. Kumaran, P. Ramamurthy,  J. Fluoresc.,  21,  (2011),  2165-2172
  • Photoionization and Time-Dependent Stokes Shift of Coumarin 307 in Soft Matter: Solvation and Radical-Ion Pair Recombination Dynamics,  N. Dhenadhayalan, C. Selvaraju, P. Ramamurthy,  J. Phys. Chem. B,  115,  (2011),  10892-10902
  • Highly selective, sensitive and quantitative detection of Hg2+ in aqueous medium under broad pH range,  R. Koteeswari, P. Ashokkumar, E. J. Padma Malar, V. T. Ramakrishnan, P. Ramamurthy,  Chem. Commun.,  47,  (2011),  7695- 7697
  • Photoinduced Electron Transfer (PET) Based Zn2+ Fluorescent Probe: Transformation of Turn-On Sensors into Ratiometric Ones with Dual Emission in Acetonitrile,  P. Ashokkumar, V. T. Ramakrishnan, P. Ramamurthy,  J. Phys. Chem. A,  115,  (2011),  14292-14299
  • Synthesis and characterization of NADH model compound modified β-cyclodextrin and its role as an energy donor in FRET,  R. Krishnaveni, P. Ramamurthy, E.J. Padma Malar, P. Divya,  J. Photochem. Photobiol. A:Chem.,  229,  (2012),  60-68

Seminar / Conference / Workshop

National

  • Modern Trends in Chemistry September 19-20, 2007. Vivekananda College, Tiruvedagam, Madurai   Invited Talk: Excited State Behaviour Of NADH Model Compounds
  •   National Symposium in Chemistry January  10-11, 2008. American College, Madurai.   Invited Talk: Hydrophobic Fencing of PET in Acridinedione dyes  
  •   Emerging Trends in Chemistry, Jul 24-25, 2008. CPA College, Bodinayakanur.   Invited Talk: PET and ICT Based Acridinedione Fluorescence Sensors  
  •   Chennai Chemistry Conference -2011 National Seminar, Jointly organized with Indian Institute of Technology, Chennai Feb 11-13, 2011. IIT Madras. Co-Convener
  •   National Seminar on “Nanostructured Materials and application” March 4-5, 2011. Madurai-Kamaraj University.   Invited Talk: Acridinedione functionalized gold nanoparticle as a model for the binding of 1,3-dithiol and chemosensors
  • National Fluorescence Workshop “Spectroscopy and Microscopy in Biology and Chemistry”, November, 14-18, 2011. ICGEB and Jawaharlal Nehru University, New Delhi.   Research Talk: Time correlated Single photon Counting Technique and Study of NADH model compounds.
  • National Conference on Advanced Nanomaterials, February 06-07, 2012. Periyar University, Salem. Plenary Lecture: Acridinedione based fluorescence sensors and their functionalization on gold nanoparticles

International

  • Fluorescence in Biology: An international Conference, March 16-19, 2009. TIFR, Mumbai.   Invited Talk: Photophysics of PET based model compounds in molecular self assemblies
  • Trombay Symposium on Radiation and Photochemistry, September, 14-17, 2010. BARC, Mumbai. Invited Talk: Probing Anion-Receptor Hydrogen bonding and Deprotonation equilibrium from Fluorescence spectral studies 

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