Publications List

  1. Comparative intra-versus extra-cavity laser cooling efficiencies.
    Bauke Heeg, Garry Rumbles, Anatoliy Khizhnyak, Peter A. Debarber
    Journal of Applied Physics, 91(5), 3356-3362 (2002).
  2. Matrix dependence of light emission from TCNQ adducts 
    David Bloor, Yasuyuki Kagawa, Marek Szablewski, Mosurkal Ravi, Stuart J. Clark, Graham H. Cross, Lars-Olof Pålsson, Andrew Beeby, Chetan Parmer, Garry Rumbles 
    Journal of Materials Chemistry, 11, 3053-3062 (2001).
  3. Excited State Relaxation Mechanisms in InP colloidal Quantum Dots.
    G.Rumbles, D.Selmarten, R.E.Ellingson, J.Blackburn, P.Yu, B.B.Smith, O.I.Micic and A.J.Nozik
    Materials Research Society Symposium Proceedings, 667, G6.3.1-G6.3.7 (2001).
  4. Development of an Organic Dye Solution for Laser Cooling by Anti-Stokes Fluorescence.
    J.L.Bartholomew, P.A.DeBarber, B.Heeg, and G.Rumbles
    Materials Research Society Symposium Proceedings, 667, G1.7.1-G1.7.6 (2001).
  5. Anomalies in the linear absorption, transient absorption, photoluminescence and photoluminescence excitation spectroscopies of colloidal InP quantum dots
    G.Rumbles, D.C.Selmarten, R.J.Ellingson, J.L.Blackburn, P.Yu, B.B.Smith, O.I.Micic and A.J.Nozik
    Journal of Phoochemistry and Photobiology A: Chemistry, 142, 187-195 (2001).
  6. Optical Refrigeration Using Anti-Stokes Fluorescence from Molecular Dyes.
    G.Rumbles, B.Heeg, J.L.Lloyd (nee Clark), P.A.Debarber and B.J.Tomlinson
    In 'Cryocoolers 11', Ed: R.G.Ross Jr., Kluwer Academic/Plenum, New York, 621-629 (2001).
  7. Solid-state optics - A laser that turns down the heat.
    G.Rumbles
    Nature, 409, 572-573 (2001).
  8. Fluorene co-polymer luminescence: implications for molecular interactions.
    L.O.Palsson, C.S.Wang, A.P.Monkman, M.R.Bryce, G.Rumbles and I.D.W.Samuel
    Synthetic Metals, 119: (1-3) 627-628 (2001).
  9. Cyano-substituted model compounds and conjugated polymers of PPV
    M.M.de Souza, G.Rumbles, D.L.Russell, I.D.W.Samuel, S.C.Moratti, A.B.Holmes and P.L.Burn
    Synthetic Metals, 119: (1-3) 635-636 (2001).
  10. Synthesis and photophysical properties of peripherally metallated bis(dimethylamino)porphyrazines.
    E.G.Sakellariou, A.G.Montalban, H.G.Meunier, R.B.Ostler, G.Rumbles, A.G.M.Barrett and B.M.Hoffman
    Journal of Photochemistry and Photobiology A, 136(3), 185-187 (2000).
  11. Properties of light emitting organic materials within the context of future electrically pumped lasers.
    N.Tessler, D.J.Pinner, V.Cleave, P.K.H.Ho, R.H.Friend, G.Yahioglu, P.L.Barny, J.Gray, M.de Souza and G.Rumbles
    Synthetic Metals, 115(1-3), 57-62, 2000.
  12. A seco-porphyrazine: Superb sensitizer for singlet oxygen generation and endoperoxide synthesis.
    A.A.Trabanco, A.G.Montalban, G.Rumbles, A.G.M.Barrett, B.M.Hoffman.
    Synlett, 7, 1010-1012 (2000)
  13. Polymorphism in phthalocyanine thin films: mechanism of the a - b transition.
    S.Heutz, S.M.Bayliss, R.L.Middleton, G.Rumbles and T.S.Jones.
    Journal of Physical Chemistry B, 104(30), 7124-7129 (2000)
  14. The origin of line broadening in the electronic absorption spectra of conjugated polymers: Three-pulse echo studies of MEH-PPV in toluene.
    G.D.Scholes, D.S.Larsen, G.R.Fleming, G.Rumbles and P.L.Burn.
    Physical Review B., 61(20), 13670 (2000).
  15. Templating effects in the growth of metal-free phthalocyanine polymorphic double layers.
    S.M.Bayliss, S.Heutz, R.Cloots, R.L.Middleton, G.Rumbles and T.S.Jones.
    Advanced Materials, 12(3), 202-206 (2000).
  16. Material and device related properties in the context of the possible making of electrically pumped polymer laser.
    N.Tessler, P.K.H.Ho, V.Cleave, D.J.Pinner, R.H.Friend, G.Yahioglu, P.Le Barny, J.Gray, M.de Souza and G.Rumbles.
    Thin Solid Films, 363, 64-67 (2000).
  17. Photoluminescence studies of solution thermochromism in a cyano-subsituted phenylene vinylene derivative.
    G.Rumbles, C.J.Collison, D.L.Russell, L.A.Magnani, A.B.Holmes, S.C.Moratti and I.D.W.Samuel.
    Synthetic Metals,     111-112, 501-505 (2000).
  18. A theoretical and experimental study of cyano and alkoxy substituted phenylenevinylene model compounds.
    M.M.de Souza, G.Rumbles, I.R.Gould, H.Amer, I.D.W.Samuel, S.C.Moratti, A.B.Holmes.
    Synthetic Metals, 111-112, 539-543 (2000).
  19. Effect of annealing on the properties of thin films of metal free phthalocyanine and perylene-3,4,9,10-tetracarboxylic
    dianhydride deposited by organic molecular beam deposition.
    S.M.Bayliss, S.Heutz, G.Rumbles and T.S.Jones.
    Materials Research Society Symposium Proceedings, 560, 71-74 (1999).
  20. Photoluminescenec studies of the light-emitting species in new materials for polymer devices.
    G.Rumbles, P.F.Miller, M.M.deSouza, I.R.Gould, H.Amer, D.L.Russell, A.B.Holmes, S.C.Moratti and I.D.W.Samuel.
    Proceedings of SPIE, 3797, 101-108 (1999).
  21. Thin film properties and surface morphology of metal free phthalocyanine films grown by organic molecular beam deposition.
    S.M.Bayliss, S.Heutz, G.Rumbles, T.S.Jones.
    Physical Chemistry Chemical Physics, 15, 3673-3676 (1999).
  22. Conformational changes in regioregular polythiophenes due to thermal crosslinking.
    K.A.Murray, A.B.Holmes, S.C.Moratti and G.Rumbles.
    Journal of Materials Chemistry, 9, 2109-2115 (1999).
  23. Photoperoxidation of a diamino zinc porphyrazine to the seco-zinc porphyrazine: Suicide or murder?
    A.Garrido Montalban, H.G.Meunier, R.B.Ostler, A.G.M.Barrett, B.M.Hoffman, and G.Rumbles.
    Journal of Physical Chemistry A, 103, 4352-4358 (1999).
  24. Temperature dependent photoluminescence from a cyano-substituted phenylene vinylene polymer.
    G.Rumbles , I.D.W.Samuel, C.J.Collison, P.F.Miller, S.C.Moratti and A.B.Holmes.
    Synthetic metals, 101, 158-161 (1999).
  25. The influence of solvent dielectric constant on the photophysical properties of cyano and alkoxy substituted phenylene vinylene model compounds.
    M.M.deSouza, G.Rumbles, I.D.W.Samuel, S.C.Moratti, A.B.Holmes.
    Synthetic Metals, 101, 631-632 (1999).
  26. Sensing isothermal changes in the lateral pressure in model membranes using di-pyrenyl phosphatidylcholine.
    R.H.Templer, S.J.Castle, A.R.Curran, G.Rumbles and D.R.Klug.
    Faraday Discussions, 111, 41-53 (1998).
  27. Fibre-optic temperature sensor.
    Imperial College (G.Rumbles, IC Innovations).
    Patent GB 2 333 357, 20th January 1998.
  28. An approach to insulated molecular wires: synthesis of water-soluble conjugated rotaxanes.
    S.Anderson, R.T.Aplin, T.D.W.Claridge, T. Goodson III, A.C.Maciel, G.Rumbles, J.F.Ryan, H.L.Anderson.
    Journal of the Chemical Society, Perkin Tansactions I, 1, 2383-2397 (1998).
  29. Red edge photophysics of ethanolic rhodamine 101 and the observation of laser cooling in the condensed phase.
    J. L. Clark, P. F. Miller and G. Rumbles.
    Journal of Physical Chemistry A, 24, 4428-4437 (1998).
  30. Conjugated porphyrin oligomers from monomer to hexamer.
    P.N. Taylor, J. Huuskonen, G. Rumbles, R.T. Aplin, E. Williams, H.L. Anderson.
    Chemical Communications, No.8, 909-910 (1998).
  31. Intra- and inter-molecular photoexcitations in a cyano-substituted poly(p-phenylene vinylene).
    I.D.W.Samuel, G.Rumbles, C.J.Collison, S.C.Moratti and A.B.Holmes.
    Chemical Physics, 227, 75-82 (1998).
  32. Autoreconvolution-An extension to the "Reference Convolution" procedure for the simultaneous analysis of two fluorescence decays from one sample.
    G. Rumbles, T.A. Smith, A.J. Brown, M.Carey and I.Soutar.
    Journal of Fluorescence, 7(3), 217-229 (1997).
  33. Third-order nonlinear optical properties of conjugated molecules by coherent Raman scattering.
    K.J. Atherton, G.P. Keogh and G. Rumbles.
    Synthetic Metals, 84:1-3, 945-946 (1997).
  34. Picosecond time-resolved photoluminescence of ppv derivatives.
    I.D.W. Samuel, G. Rumbles, C.J. Collison, R.H. Friend, S.C. Moratti and A.B. Holmes.
    Synthetic Metals, 84:1-3, 497-500 (1997).
  35. Photoluminescence studies of chain interactions in electroluminescent polymers.
    L. Magnani, G. Rumbles, I.D.W. Samuel, K. Murray, S.C. Moratti, A.B. Holmes and R.H. Friend.
    Synthetic Metals, 84:1-3, 899-900 (1997).
  36. Comparative photophysical study of di-sulphonated aluminium phthalocyanine in unilamellar vesicles and leukaemic K562 cells.
    S.Dhami, G.Rumbles, D.Phillips and A.J.MacRobert.
    Photochemistry and Photobiology, 65, 85-90 (1997).
  37. Luminescence efficiency and time-dependence: Insights into the nature of the light emitting species in conjugated polymers.
    I.D.W.Samuel, G.Rumbles and R.H.Friend.
    in 'Primary photoexcitations in conjugated polymers: Molecular exciton versus semiconductor band model', Ed. N.S.Sariciftci, World Scientific, Singapore (1997).
  38. Photoluminescence in poly(3-hexylthiophene).
    I.D.W.Samuel, L.Magnani, G.Rumbles, K.Murray, B.M.Stone, S.C.Moratti and A.B.Holmes,
    in 'Optical probes of conjugated polymers', Eds. Z.V.Vardeny and L.Rothberg, Proc.of S.P.I.E., 3145, 163-170, Washington DC (1997).
  39. Evanescent wave-induced fluorescence study of rhodamine 101 at dielectric interfaces.
    A.J.deMello, J.A.Elliott and G.Rumbles.
    Journal of the Chemical Society: Faraday Transactions, 93(23), 4723-4731 (1996).
  40. Photophysics of High Concentration Systems at a Solution/Solid Interface: An Evanescent Wave Study.
    J.A. Elliott, G. Rumbles, A.J. De Mello, and H.L. Anderson
    Materials Research Society Symposium Proceedings, 464, 295-300 (1996).
  41. Reply to comment on 'Laser cooling in the condensed phase by frequency up-conversion'
    G.Rumbles and J.L.Clark.
    Physical Review Letters, 77(13), 2841 (1996).
  42. Laser cooling in the condensed phase by frequency up-conversion.
    J.L.Clark and G.Rumbles.
    Physical Review Letters, 76(12), 2037-2040 (1996).
  43. Luminescence efficiency and time-dependence in a high electron affinity conjugated polymer.
    I.D.W.Samuel, G.Rumbles, C.J.Collison, B.Crystall, S.C.Moratti, A.B.Holmes and R.H.Friend.
    Synthetic Metals, 76, 15-18 (1996).
  44. Chromism and luminescence in regioregular poly(3-dodecylthiophene).
    G.Rumbles, I.D.W.Samuel, L.Magnani, K.Murray, A.J.DeMello, B.Crystall, S.C.Moratti, B.M.Stone, A.B.Holmes and R.H.Friend.
    Synthetic Metals, 76, 47-51 (1996).
  45. Efficient interchain photoluminescence in a high-electron-affinity conjugated polymer.
    I.D.W.Samuel, G.Rumbles and C.J.Collison.
    Physical Review B., 52(16), R11 573-576 (1995).
  46. Phthalocyanine fluorescence at high concentrations: Dimers or re-absorption effect?
    S.Dhami, A.J.DeMello, G.Rumbles, S.M.Bishop, D.Phillips and A.Beeby.
    Photochemistry and Photobiology, 61(4), 341-346 (1995).
  47. Evanescent wave spectroscopic studies of surface enhanced fluorescence quantum efficiencies.
    A.J.DeMello, B.Crystall and G.Rumbles.
    Journal of Colloid and Interface Science, 169, 161-167 (1995).
  48. Third-order nonlinear optical processes in conjugated polymers: Applications of coherent Raman scattering. G.Rumbles, J.Morgan and G.Keogh.
    in 'Polymer Photochemistry' Ed. N.S.Allen, M.Edge, I.R.Bellobono and E.Selli, Ellis-Horwood, 352-380 (1995).
  49. The influence of a solid/liquid interface on the fluorescence kinetics of the triphenylmethane dye malachite green.
    M.A.Bell, B.Crystall, G.Rumbles, G.Porter and D.Klug.
    Chemical Physics Letters, 221, 15-22 (1994).
  50. An inexpensive microprocessor-controlled spectrophotometer for time-resolved fluorescence spectroscopy.
    S.D.D.V.Rughooputh, H.C.S.Rughooputh and G.Rumbles.
    Measurement Science Technology, 5(4), 384-388 (1994).
  51. Time-resolved fluorescence spectroscopy and intracellular imaging of disulphonated aluminium phthalocyanine.
    M.Ambroz, A.J.MacRobert, J.Morgan, G.Rumbles, M.S.C.Foley and D.Phillips.
    Journal of Photochemistry and Photobiology B: Biology, 22, 105-117 (1994).
  52. A novel optical study of the tunnelling-rate and ambipolar transport characteristics of excitons in superlattices with a variety of barrier thicknesses.
    D.J.Lovering, R.T.Phillips, R.Grey, B.Crystall and G.Rumbles.
    Semiconductor Science and Technology, 9(5), 526-529 (1994).
  53. Time-resolved evanescent wave-induced fluorescence studies of polymer-surface interactions.
    G.Rumbles, D.Bloor, A.J.Brown, A.J.deMello, B.Crystall, D.Phillips and T.A.Smith.
    in 'Microchemistry: Spectroscopy and Chemistry in Small Domains', Ed. H.Masuhara, Elsevier, 269-286 (1994).
  54. Frequency up-conversion in fluid and solid solutions of the oxazine dye, rhodamine B. D.Bloor, G.Cross, P.K.Sharma, J.A.Elliott and G.Rumbles.
    Journal of the Chemical Society: Faraday Transactions, 89(22), 4013-4015 (1993).
  55. The efficiency and time-dependence of luminescence from poly(p-phenylene vinylene) and derivatives.
    I.D.W.Samuel, B.Crystall, G.Rumbles, P.L.Burn, A.B.Holmes and R.H.Friend.
    Chemical Physics Letters, 213, 472-478 (1993).
  56. 1,1-dinaphthyl propane: A model for polymer photophysics and a probe for the investigation of macromolecular dynamics?
    T.Annable, I.Soutar and G.Rumbles.
    Polymer, 34(17), 3576-3581 (1993).
  57. Time-resolved evanescent wave-induced fluorescence measurements of surface adsorbed bovine serum albumin.
    B.Crystall, G.Rumbles, T.A.Smith and D.Phillips.
    Journal of Colloid and Interface Science, 155, 247-250 (1993).
  58. Time-resolved luminescence measurements in poly(p-phenylene vinylene).
    I.D.W.Samuel, B.Crystall, G.Rumbles, P.L.Burn, A.B.Holmes and R.H.Friend.
    Synthetic Metals, 54, 281-288 (1993).
  59. Picosecond coherent anti-Stokes Raman spectroscopy of soluble polydiacetylenes.
    G.Rumbles and J.Morgan.
    in 'Organic Materials for Non-linear Optics III', Eds. G.Ashwell and D.Bloor, Royal Society Chemistry, 271-277 (1993).
  60. Surface effects on poly(diacetylene) conformations in solution studied using evanescent-wave induced fluorescence spectroscopy.
    D.Phillips, G.Rumbles and A.J.Brown.
    Polymer Preprints, 33(1), 845 (1992).
  61. Synchrotron-generated time-resolved fluorescence anisotropy studies of the segmental relaxation of poly(acrylic acid) and poly(methacrylic acid) in dilute methanolic solutions.
    I.Soutar, L.Swanson, R.E.Imhof and G.Rumbles.
    Macromolecules, 25, 4399-4405 (1992).
  62. Auto-deconvolution: A new method of data retrieval from time-resolved emission anisotropy measurements.
    A.J.Marsh, G.Rumbles, I.Soutar and L.Swanson.
    Chemical Physics Letters, 195(1), 31-36 (1992).
  63. Photophysics of the chiral soluble polydiacetylene poly-9RBMU - Evidence for emission from short conjugated sequences.
    J.Morgan, G.Rumbles, B.Crystall, T.A.Smith and D.Bloor.
    Chemical Physics Letters, 196(5), 455-461 (1992).
  64. Surface-induced chromism and enhanced fluorescence of the soluble polydiacetylene, poly-4BCMU, at a solid/solution interface: An evanescent-wave induced fluorescence study.
    G.Rumbles, A.J.Brown, D.Phillips and D.Bloor.
    Journal of the Chemical Society: Faraday Transactions, 88(22), 3313-3318 (1992).
  65. Time-resolved evanescent wave induced fluorescence spectroscopy I - Deviations in the fluorescence lifetime of tetrasulphonated aluminium phthalocyanine at a fused silica/methanol interface.
    G.Rumbles, A.J.Brown, D.Phillips and D.Bloor.
    Journal of the Chemical Society: Faraday Transactions, 87(6), 825-830, (1991).
  66. Laser-induced fluorescence from the predissociating formyl radical II - Analysis of dispersed emission from the A-X transition.
    G.Rumbles, E.K.C.Lee and J.J.Valentini.
    Journal of the Chemical Society: Faraday Transactions, 86(23), 3837-3841 (1990).
  67. Time-resolved laser spectroscopy (nanosecond and picosecond techniques, principles, devices and applications).
    D.Phillips and G.Rumbles.
    in 'Applications of Lasers in Polymer Science and Technology', 1, 91-145, Eds. J.P.Fouassier and J.F.Rabek, C.R.C. Press, (1990).
  68. Time-resolved phosphorescence spectrum of propynal vapour.
    G.H.Atkinson, S.Speiser, N.Goldstein, J.Price and G.Rumbles.
    Journal of Molecular Spectroscopy, 131, 356-368 (1989).
  69. Laser induced fluorescence from the pre-dissociating formyl radical I: Mechanism for the predissociation of the A2A" state. G.Rumbles, B.M.Stone J.J.Valentini and E.K.C.Lee.
    Journal of Physical Chemistry, 93, 1303-1307 (1989).
  70. Picosecond time-resolved resonance Raman spectroscopy of the initial trans-cis isomerisation in the bacteriorhodopsin photocycle.
    G.H.Atkinson, G.Rumbles, T.Brack and D.Blanchard.
    Chemical Physics, 131, 1-15 (1989).
  71. Side-group dependence of chromism in poly(diacetylenes).
    A.J.Brown, G.Rumbles, D.Phillips and D.Bloor.
    Chemical Physics Letters, 151, 247-252 (1988).
  72. Spectroscopy of the HCO radical and its relation to the photodissociation of aliphatic aldehydes.
    E.K.C.Lee, G.Rumbles and K.Kasatani.
    in 'Laser Applications to Chemical Dynamics', Ed. M.A.El-Sayed, Proc.of S.P.I.E., 742, Washington DC (1987).
  73. Picosecond conformational intermediates in the bacteriorhodopsin photocycle.
    G.H.Atkinson, T.L.Brack, D.Blanchard, G.Rumbles and L.Siemenkowski.
    in 'Ultra Fast Phenomena V', 46, 409-412, Eds. G.R.Fleming and A.E.Siegman, Springer-Verlag, Berlin (1986).
  74. Picosecond time-resolved resonance Raman spectroscopy of bacteriorhodopsin intermediates.
    G.H.Atkinson T.L.Brack, I.Grieger, G.Rumbles, D.Blanchard and L.Siemenkowski.
    in 'Ultrafast Applications in Chemistry and Biochemistry', Proceedings of S.P.I.E., 620, 82-87, Washington DC (1986).
  75. Optical absorption and luminescence in poly(4,4'-diphenylene diphenylvinylene).
    W.J.Feast, R.H.Friend, M.E.Horton, I.S.Millichamp, D.Phillips, S.D.D.V.Rughooputh and G.Rumbles.
    Synthetic Metals, 10, 181-191 (1985).
  76. Picosecond time-resolved resonance Raman spectroscopy of bacteriorhodopsin.
    G.H.Atkinson, T.L.Brack, I.Grieger, G.Rumbles, D.Blanchard, and L.Siemenkowski.
    in 'Time-Resolved Vibrational Spectroscopy', 55-60, Ed. G.H.Atkinson, Gordon Breach Science, New York (1985).
  77. Picosecond time-resolved resonance Raman spectroscopy of the bacteriorhodopsin intermediates.
    G.H.Atkinson, I.Grieger and G.Rumbles.
    in 'Time-resolved Vibrational Spectroscopy', 4, 255-258, Eds. A.Laubereau and M.Stockburger, Springer-Verlag, Berlin (1985).
  78. Excimer formation and energy transfer in vinyl aromatic polymers.
    D.Phillips and G.Rumbles.
    Polymer Photochemistry, 5, 153-170 (1984).
  79. Transient decay studies of photophysical processes of aromatic polymers VII. Studies of molecular weight dependence of intramolecular excimer formation in polystyrene and styrene-butadiene block copolymers.
    D.Phillips, A.J.Roberts, G.Rumbles and I.Soutar.
    Macromolecules, 16, 1597-1601 (1983).
  80. The Saupe ordering matrices for solutes in uniaxial liquid crystals: Experiment and theory.
    J.W.Emsley, R.Hashim, G.R.Luckhurst, G.Rumbles and F.R.Viloria.
    Molecular Physics, 49, 1321-1335 (1983).
  81. Iterative reconvolution techniques used to analyse fluorescence decay curves in terms of multiple components.
    G.Rumbles and D.Phillips.
    in 'Deconvolution and Reconvolution of Analytical Signals - Applications to Fluorescence Spectroscopy', 425-444, Ed. M.Bouchy, Nancy, France (1982).
  82. Transient decay studies of photophysical properties of aromatic polymers VI. Intramolecular excimer formation and dissociation in polystyrene and styrene-methylmethacrylate copolymers.
    I.Soutar, D.Phillips, A.J.Roberts and G.Rumbles.
    Journal of Polymer Science, 20, 1759-1770 (1982).
  83. Excimer formation in polystyrene.
    G.Rumbles.
    in 'Photophysics of Synthetic Polymers', 5-25, Eds. D.Phillips and A.J.Roberts, Science Reviews, London (1982).