Journal Articles

Vancea, A, Kirkpatrick, I, Worrall, D, Williams, SL (2019) Energy and electron transfer reactions on silica gel and titania-silica mixed oxide surfaces, Research on Chemical Intermediates, 45(8), pp.4205-4223, ISSN: 0922-6168. DOI: 10.1007/s11164-019-03901-5.

Kirkpatrick, I, Worrall, D, Williams, SL, Buck, CJT, Meseguer, RG (2012) Probing the interplay between factors determining reaction rates on silica gel using termolecular systems, PHOTOCHEMICAL & PHOTOBIOLOGICAL SCIENCES, 11(10), pp.1585-1591, ISSN: 1474-905X. DOI: 10.1039/c2pp25171j.

Williams, SL, Worrall, DR, Kirkpatrick, I, Vancea, A, Pan, J (2011) Activation energies of photoinduced unimolecular, bimolecular and termolecular processes on silica gel surfaces, Photochemical and Photobiological Sciences, 10(1), pp.84-90.

Williams, SL, Worrall, DR, Kirkpatrick, I (2010) Electron Transfer Reactions in Ternary Systems on Silica Gel Surfaces: Evidence for Radical Cation Diffusion, Photochemical and Photobiological Sciences, 9,(7), pp.937-941.

Sikorski, M, Prukala, D, Insinska Rak, M, Khmelinskii, IV, Worrall, DR, Williams, SL, Hernando, J, Bourdelande, JL, Koput, J, Sikorska, E (2008) Spectroscopy and photophysics of dimethyl-substituted alloxazines, Journal of Photochemistry and Photobiology A:Chemistry, 200(2-3), pp.148-160.

Worrall, DR, Williams, SL, Ganguly, T (2006) Ion-electron recombination on silica gel surfaces: experiment and modelling, Photochemical and Photobiological Sciences, 5(9), pp.844-849, ISSN: 1474-905X. DOI: 10.1039/b608601b.

Sikorska, E, Herance, JR, Bourdelande, JL, Khmelinskii, IV, Williams, SL, Worrall, DR, Nowacka, G, Komasa, A, Sikorski, M (2005) Spectroscopy and Photophysics of Flavin-related compounds: 3-ethyl-lumiflavin, Journal of Photochemistry and Photobiology A: Chemistry, 170, pp.267-272.

Sikorska, E, Khmelinskii, IV, Komasa, A, Koput, J, Ferreira, LFV, Herance, JR, Bourdelande, JL, Williams, SL, Worrall, DR, Insinska Rak, M, Sikorski, M (2005) Spectroscopy and photophysics of flavin-related compounds: Riboflavin and iso-(6,7)-riboflavin, Chemical Physics, 314(1-3), pp.239-247.

Sikorska, E, Khmelinskii, IV, Prukala, W, Williams, SL, Patel, M, Worrall, DR, Bourdelande, JL, Koput, J, Sikorski, M (2004) Spectroscopy and Photophysics of Lumiflavins and Lumichromes, Journal of Physical Chemistry A, 108(9), pp.1501-1508, ISSN: 1089-5639. DOI: 10.1021/jp037048u.

Sikorska, E, Khmelinskii, IV, Prukala, W, Williams, SL, Worrall, DR, Bourdelande, JL, Bednarek, A, Koput, J, Sikorski, M (2004) Spectroscopy and photophysics of 9-methylalloxazine. Experimental and theoretical study, Journal of Molecular Structure, 689(1-2), pp.121-126.

Eremenko, A, Smirnova, N, Yakimenko, O, Starukh, G, Worrall, DR, Williams, SL (2004) Electron transfer processes of coadsorbed anthracene and N,N-dimethylaniline on titania-silica, International Journal of Photoenergy, 6(1), pp.11-16.

Sikorska, E, Khmelinskii, IV, Worrall, DR, Williams, SL, Gonzalez Moreno, R, Bourdelande, JL, Koput, J, Sikorski, M (2004) Photophysics of 1-methyllumichrome, Journal of Photochemistry and Photobiology A: Chemistry, 162(1), pp.193-201.

Sikorska, E, Khmelinskii, IV, Williams, SL, Worrall, DR, Herance, JR, Bourdelande, JL, Koput, J, Sikorski, M (2004) Spectroscopy and Photophysics of 6,7-dimethylalloxazine: Experimental and Theoretical Study, Journal of Molecular Structure, 697(1-3), pp.199-205.

Sikorska, E, Khmelinskii, IV, Bourdelande, JL, Bednarek, A, Williams, SL, Patel, M, Worrall, DR, Koput, J, Sikorski, M (2004) Spectroscopy and Photophysics of Mono Methyl Substituted Alloxazines, Chemical Physics, 301(1), pp.95-103.

Worrall, DR and Williams, SL (2004) Diffuse-Reflectance Laser Flash Photolysis, Encyclopedia of Modern Optics Volume 1, pp.31-38.

Sikorska, E, Khmelinskii, IV, Bednarek, A, Williams, SL, Worrall, DR, Herance, JR, Bourdelande, JL, Nowacka, G, Koput, J, Sikorski, M (2004) Spectroscopy and Photophysics of 6,8-dimethylalloxazine: Experimental and theoretical study, Polish Journal of Chemistry, 78(11-12), pp.2163-2173.

Worrall, DR, Williams, SL, Eremenko, A, Smirnova, N, Yakimenko, O, Starukh, G (2003) Laser flash photolysis study of electron transfer processes of adsorbed anthracene on titania-silica surfaces, Colloids and Surfaces A: Physicochemical and Engineering Aspects, 230(1-3), pp.45-55, ISSN: 0927-7757. DOI: 10.1016/j.colsurfa.2003.09.012.

Worrall, DR, Kirkpatrick, I, Williams, SL (2003) Bimolecular processes on silica gel surfaces: energetic factors in determining electron-transfer rates, Photochemical and Photobiological Sciences, 3(1), pp.63-70, ISSN: 1474-905X. DOI: 10.1039/b308033a.

Worrall, DR, Kirkpatrick, I, Williams, SL (2002) Controlling factors in electron and energy transfer reactions on silica gel surfaces, Photochemical and Photobiological Sciences, 1(11), pp.896-901, ISSN: 1474-905X. DOI: 10.1039/b207835j.

Hobley, J, Malatesta, V, Hatanaka, K, Kajimoto, S, Williams, SL, Fukumura, H (2002) Picosecond and nanosecond photo-dynamics of a naphthopyran merocyanine, Physical Chemistry Chemical Physics, 4(2), pp.180-184, ISSN: 1463-9076. DOI: 10.1039/b107973p.

Olea, AF, Worrall, DR, Wilkinson, F, Williams, SL, Abdel Shafi, AA (2002) Solvent effects on the photophysical properties of 9,10-dicyanoanthracene, Physical Chemistry Chemical Physics, 4, pp.161-167.

Mandley, DJ, Birch, JF, Williams, SL, Trotter, PJ, Wilkinson, F, Davies, GA (2000) Photon activated biological adhesives in surgery, International Journal of Adhesion and Adhesives, 20(2), pp.97-102, ISSN: 0143-7496. DOI: 10.1016/s0143-7496(99)00042-1.

Wilkinson, F, Mandley, DJ, Birch, JF, Williams, SL, Trotter, PJ, Davies, GA (2000) Photon activated biological adhesives in surgery, International Journal of Adhesion and Adhesives, 20(2), pp.97-102.

Wilkinson, F, Birch, JF, Mandley, DJ, Williams, SL, Worrall, DR, Trotter, PJ, Bell, PR (2000) Methylene Blue based protein solder for vascular anastomses: An in vitro burst pressure study, Lasers in Surgery and Medicine, 26(3), pp.323-329.

Worrall, DR, Williams, SL, Wilkinson, F, Crossley, JE, Bouas Laurent, H, Desvergne, JP (1999) Spectroscopy and Ion-Electron Recombination Kinetics of Radical Ions of Anthracenes and Substituted Anilines on Silica Gel, Journal of Physical Chemistry B, 103(43), pp.9255-9261.

Worrall, DR, Williams, SL, Wilkinson, F (1998) Electron Transfer on Insulator Surfaces: Exciplex Emission and the Role of Electron Diffusion in Determining Radical Deactivation Rates, Journal of Physical Chemistry A, 102(28), pp.5484-5490.

Worrall, DR, Williams, SL, Wilkinson, F (1997) Electron Transfer Reactions of Anthracene Adsorbed on Silica Gel, Journal of Physical Chemistry B, 101(24), pp.4709-4716.

Fogg, AG, Ismail, R, Ahmad, R, Williams, SL, Zanoni, MVB (1997) Discrete Complexed Ligand and Catalytic Nickel Peaks in the Differential Pulse Polarography and Cathodic Stripping Voltammetry of Mordant Red 74, Microchemical Journal, 57, pp.110-114, ISSN: 0026-265X.

Wilkinson, F, Worrall, DR, Hobley, J, Jansen, L, Williams, SL, Langley, AJ, Matousek, P (1996) Picosecond Time-Resolved Spectroscopy of the Photocolouration Reaction of Photochromic Naphthoxazine-spiro-indolines, Journal of the Chemical Society, Faraday Transactions, 92(8), pp.1331-1336.

Wilkinson, F, Worrall, DR, Williams, SL (1995) Primary Photochemical Processes of Anthracene Adsorbed on Silica Gel, Journal of Physical Chemistry, 99(17), pp.6689-6696.

Conferences

Vancea, A, Worrall, SL, Worrall, DR (2011) Energy and Electron Transfer of co-adsorbed Molecules on Titania-Silica Binary Oxides. In Photochmistry and Photochemical Techniques, Abstracts of Photochemistry and Photochemical Techniques, University College and Trinity College Dublin, Oral Presentation 15.

Kirkpatrick, I, Worrall, SL, Worrall, DR, Buck, C (2011) Energy Transfer in Termolecular Systems on Silica Gel. In Photochemistry and Photochemical Techniques, Abstracts of Photochemistry and Photochemical Techniques, University College and Trinity College Dublin, Poster Pres. 10.

Kirkpatrick, I, Williams, SL, Worrall, DR (2010) Electron Transfer reactions in Ternary Systems on Silica Gel Surfaces. In 3rd International conference on semiconductor photochemistry, Proceedings of the 3rd International conference on semiconductor photochemistry, University of Strathclyde, Glasgow, 152 (poster 48).

Vancea, A, Williams, SL, Worrall, DR (2010) Energy and electron transfer of co-adsorbed molecules on silica-titania binary oxides. In 3rd International conference on semiconductor photochemistry, Proceedings of the 3rd International conference on semiconductor photochemistry, University of Strathclyde, Glasgow, 106 (poster 2).

Vancea, A, Williams, SL, Worrall, DR (2010) Energy and electron transfer of co-adsorbed molecules on titania-silica binary oxides. In The Royal Society of Chemistry Photochemistry Group, Early Career Researchers' Meeting, Proceedings of the Royal Society of Chemistry Photochemistry Group, Early Career Researchers' Meeting, Durham University, Poster number 15.

Kirkpatrick, I, Williams, SL, Worrall, DR (2010) Electron Transfer Reactions in Ternary Systems on Silica Gel Surfaces. In The Royal Society of Chemistry Photochemistry Group, Early Career Researchers' Meeting, Proceedings of the Royal Society of Chemistry Photochemistry Group, Early Career Researchers' Meeting, Durham University, Poster number 10.

Kirkpatrick, I, Williams, SL, Worrall, DR (2009) Electron Transfer reactions in ternary systems on silica gel. In XXIV International Conference on Photochemistry, Abstracts of the XXIV International Conference on Photochemistry, Toledo, Spain, pp.PSIII-P67.

Williams, SL and Worrall, DR (2009) Simple technique for monitoring in-situ ion-electrom recombination on surfaces. In XXIV International Conference on Photochemistry, Abstracts of the XXIV International Conference on Photochemistry, Toledo, Spain, pp.PSIII-P64.

Williams, SL, Worrall, DR, Day, CJ (2007) Radical cation decay on mixed oxide surfaces. In Second International Conference on "Semiconductor Photochemistry", Proceedings of the Second International Conference on "Semiconductor Photochemistry", Aberdeen, Scotland, p.034.

Williams, SL, Mortimer, RJ, Patel, D, Worrall, DR (2007) Gratzel Photoelectrochemical solar cells. In SET for Britain, Proceedings of the Ninth Great British Research and R&D show, House of Commons, London, UK, pp.L2-79.

Williams, SL, Worrall, DR, Wilkinson, F, Ganguly, T (2006) Ion-electron recombination kinetics on silica gel. Evidence for radical cation diffusion. In Applied Photochemistry and Semi-conductor Photocatalysis, RSC Photochemistry Group, Proceedings of the Applied Photochemistry and Semi-conductor Photocatalysis, RSC Photochemistry Group, Runcorn, UK, Poster abstract 13.

Williams, SL, Worrall, DR, Kirkpatrick, I (2006) Factors controlling photoinduced reactions on silica gel. In RSC Faraday Division, Meeting for Recently Appointed Academics in Physical Chemistry, Proceedings of the RSC Faraday Division, Meeting for Recently Appointed Academics in Physical Chemistry, Nottingham, UK, p.12.

Worrall, DR, Williams, SL, Kirkpatrick, I (2004) The Effect of Temperature on the Ion-Electron Recombination Kinetics of Photoproduced Arene Radical Cations Adsorbed on Silica Gel. In XX IUPAC Symposium on Photochemistry, Proceedings of the XX IUPAC Symposium on Photochemistry, Granada, Spain, p.597.

Worrall, DR, Williams, SL, Eremenko, A, Smirnova, N, Yakimenko, O, Starukh, G, Rotkiewicz, K (2003) Effect of photocatalytic titania-silica surfaces on electron transfer processes of adsorbed organic compounds. In 7th International Conference on Solar Energy and Applied Photochemistry, 7th International Conference on Solar Energy and Applied Photochemistry Abstracts, Luxor, Egypt, Poster 28.

Worrall, DR, Williams, SL, Eremenko, A, Smirnova, N, Yakimenko, O, Starukh, G, Lee, JS, Kim, WB (2003) Mechanistic and kinetic aspects of photocatalytic degradation of water-bourne dyestuffs. In 7th International Conference on Solar Energy and Applied Photochemistry, 7th International Conference on Solar Energy and Applied Photochemistry Abstracts, Luxor, Egypt, Poster 78.

Worrall, DR, Williams, SL, Kirkpatrick, I (2003) Diffusion Control in reactions on silica gel. In 7th International Conference on Solar Energy and Applied Photochemistry, 7th International Conference on Solar Energy and Applied Photochemistry Abstracts, Luxor, Egypt, Poster 86.

Worrall, DR, Williams, SL, KirkpatricK, I (2003) Photoinduced Electron and Energy Transfer Reactions on Silica Gel Surfaces. In XXIst International Conference on Photochemistry, Proceedings of the XXIst International Conference on Photochemistry, Nara, Japan, p.11.

Williams, SL, Worrall, DR, Kirkpatrick, I (2003) Factors Controlling Photoinduced Reactions on Silica Gel. In XXIst International Conference on Photochemistry, Proceedings of the XXIst International Conference on Photochemistry, Nara, Japan, p.619.

Worrall, DR, Williams, SL, Kirkpatrick, I (2003) Controlling Factors in Bimolecular Reactions on Silica Gel Surfaces. In Tohoku University Annual Physical Chemistry Colloquium: Advances in Photochemistry, Proceedings of the Tohoku University Annual Physical Chemistry Colloquium: Advances in Photochemistry, Tohoku, Japan, p.45.

Worrall, DR and Williams, SL (2003) The effect of substituent length on the photochromism of spiropyrans. In Tohoku University Annual Physical Chemistry Colloquium: Advances in Photochemistry, Proceedings of the Tohoku University Annual Physical Chemistry Colloquium: Advances in Photochemistry, Tohoku, Japan, p.96.

Worrall, DR and Williams, SL (2002) Reverse saturable absorption based on a bimolecular system. In XIX IUPAC symposium on photochemistry, XIXth IUPAC symposium on photochemistry abstracts, Budapest, Hungary, p.499.

Worrall, DR, Williams, SL, Eremenko, A, Smirnova, N, Yakimenko, O, Starukh, G (2002) Effect of titania-silica binaries on the photonics of anthracene in presence of coadsorbed electron donor N,N-dimethylaniline. In XIX IUPAC symposium on photochemistry, XIXth IUPAC symposium on photochemistry abstracts, Budapest, Hungary, p.210.

Worrall, DR, Williams, SL, Smirnova, N, Yakimenko, O, Eremenko, A (2002) Photodegradation of rhodamine 6G in aqueous TiO₂/SiO₂ dispersions prepared by a sol-gel and an impregnation synthesis. In XIX IUPAC symposium on photochemistry, XIXth IUPAC symposium on photochemistry abstracts, Budapest, Hungary, p.433.

Wilkinson, F, Worrall, DR, Williams, SL (2000) Reverse Saturable Absorption Based on Intermolecular Electron Transfer. In XVIII IUPAC Symposium on Photochemistry, XVIII IUPAC Symposium on Photochemistry Abstracts, Technische Universitat Dresden, p.638.

Wilkinson, F, Worrall, DR, Williams, SL (2000) Photoinduced Electron Transfer Reactions between Molecules Adsorbed on Silica Gel Surfaces - Kinetic Analysis. In 13th International Conference on Photochemical Converstion and Storage of Solar Energy, Proceedings of the 13th International Conference on Photochemical Conversion and Storage of Solar Energy, Snowmass, Aspen, Colorado, USA, pp.W1-P3.

Wilkinson, F, Williams, SL, Worrall, DR (2000) Kinetic Studies of Photoinduced Electron Transfer Reactions between Molecules Adsorbed on Silica Gel Surfaces. In Proceedings on Conference on Photodynamics, from Isolated Molecules on Condensed Phases, Havana, Cuba, p.17.

Wilkinson, F, Worrall, DR, Williams, SL (1999) Diffuse Reflectance Laser Flash Photolysis Studies. In Proceedings of Carlos Lloyd Bragna Symposium, Braga, Portugal, pp.51-56.

Wilkinson, F, Worrall, DR, Williams, SL (1998) Electron Transfer Reactions on Silica Gel Surfaces. In Proceedings of the 12th International Conference on Photochemical Conversion and Storage of Solar Energy, Berlin, Germany, 1W32.

Worrall, DR, Williams, SL, Wilkinson, F (1998) Rate Constant Distributions in the Decay Kinetics of Azomethine Dye Photoisomers on Silica Surfaces. In Proceedings of the 17th IUPAC Symposium on Photochemistry, Sitges, Barcelona, Spain, p.275.

Williams, SL, Wilkinson, F, Worrall, DR, Bouas Laurent, H, Desvergne, JP (1998) Photophysics of Dialkoxy Anthracene Derivatives on Silica Gel. In Proceedings of the 17th IUPAC Symposium on Photochemistry, Sitges, Barcelona, Spain, p.274.

Crossley, JE, Wilkinson, F, Williams, SL, Worrall, DR (1998) Kinetics of Electron Transfer Between Anthracene Derivatives and a Variety of Electron Donors on Silica Surfaces. In Proceedings of the 17th IUPAC Symposium on Photochemistry, Sitges, Barcelona, Spain, p.272.

Wilkinson, F, Worrall, DR, Williams, SL (1997) Transient Emission Studies of Anthracene and Triphenylamine Co-adsorbed on Silica Gel. In Proceedings of XVIIIth International Conference on Photochemistry, Warsaw, Poland, 1P93.

Wilkinson, F, Worrall, DR, Williams, SL (1996) Photophysics of Anthracene and its Radical Cation on Silica Gel. In Proceedings of XVIth IUPAC Symposium on Photochemistry, Helsinki, Finland, p.592.

Wilkinson, F, Worrall, DR, Williams, SL (1996) Photophysics of Anthracene and its Radical Cation on Silica Gel. In Proceedings of the Eleventh International Conference on Photochemical Conversion and Storage of Solar Energy, Bangalore, India, pp.259-260.

Wilkinson, F, Worrall, DR, Williams, SL (1995) Primary Photochemical Processes of Anthracene Adsorbed on Silica Gel. In Proceedings of the XVIIth International Conference on Photochemistry, London, 3P53.

Chapters

Worrall, DR and Williams, SL (2004) Chemical Applications of Lasers: Diffuse-Reflectance Laser Flash Photolysis. In Encyclopedia of Modern Optics Five Volume Set, pp.31-38, DOI: 10.1016/B0-12-369395-0/00940-4.

Reports

Worrall, DR, Wilkinson, F, Williams, SL, Jansen, LMG, Matousek, P (1995) Picosecond Time-Resolved Resonance Raman Spectroscopy of Photochromic Spiro-Indolino-Naphthoxazines, pp.126-127, Central Laser Facility - Rutherford Appleton Laboratoy.

Wilkinson, F, Worrall, DR, Williams, SL, McGarvey, DJ, Langley, AJ, Taday, P (1994) Mobility, Aggregation and Deactivation Pathways of Aromatic Hydrocarbons on Silica Surfaces, p.174, SERC, Central Laser Facility Annual Report.

Other

Worrall, DR, Worrall, SL, Mortimer, RJ, Chatwin, CR, Young, RCD, Obrams, K (2003) System for tracking an article or a batch of articles, UK Patent application Number 0302791.1.