167.X. Liu, U. Tripathy, A. Mahammed, Z. Gross and R.P. Steer, “Photophysics of Soret-excited tetrapyrroles in solution. III. Al and Ga metallocorroles.” Chemical Physics Letters, 459, 113-118( 2008).

166. X. Liu, U. Tripathy, S.V. Bhosale, S.J. Langford and R.P. Steer, “Photophysics of tetrapyrroles in solution. II. Effects of perdeuteration, substituent nature and position and macrocycle structure and conformation in zinc(II) porphyrins” Journal of Physical Chemistry A, 112, 8986-8998 (2008).

165. U. Tripathy, X. Liu, D. Kowalska, S. Velate and R.P. Steer, “Photophysics of Soret-excited tetrapyrroles in solution. I. MTPP, M = Mg, Zn, Cd.” Journal of Physical Chemistry A, 112, 5824-5833(2008).

164. D. Kowalska and R.P. Steer, “Quenching of MgTPP and ZnTPP fluorescence by molecular oxygen.” Journal of Photochemistry and Photobiology, A, 195,  223-227 (2008).

163. S. Hirayama and R.P. Steer, 2007. Solvatochromism and barochromism revisited and revealed. Journal of Chemical Education, 84,  317-319 (2008).

162. R.P. Steer, Comment on "Two pathways for photon upconversion in model organic compound systems", Journal of Applied Physics, 102, 076102-1-076102-3 (2007).

161. A. Kitchin, S. Velate, M. Chen, K.P. Ghiggino, T.A. Smith and R.P. Steer,  “Photophysics of a dithioester RAFT polymerization agent and the acenaphthenyl model light-harvesting chromophore.” Photochemical and Photobiological Sciences, 6,  853-856 (2007).

160. M. Okamoto, S. Hirayama and R.P. Steer, “A reinterpretation of the unusual barochromism of azulene.” Canadian Journal of Chemistry, 85, 432-437.(2007).

 159. U. Tripathy and R.P. Steer, The photophysics of metalloporphyrins excited in their Soret and higher energy UV absorption bands. J. Porphyrins Phthalocyanines, 11, 228-243 (2007).

158. A. Lukaszewicz, J. Karolczak, D. Kowalska, A. Maciejewski, M. Ziolek and R.P. Steer, Photophysical processes in electronic excited states of zinc tetraphenyl porphyrin accessed on one- and two-photon excitation in the Soret region. Chem. Phys., 331, 359-372 (2007).

157. S. Velate, X. Liu and R.P. Steer, Does the radiationless relaxation of Soret-excited metalloporphyrins follow the energy gap law? Chem. Phys. Letters, 427, 295-299 (2006).

156. X. Liu, E.K.Y. Yeow, S. Velate and R.P. Steer, Photophysics and spectroscopy of the higher electronic states of zinc metalloporphyrins: a theoretical and experimental study. Phys. Chem. Chem. Phys., 8 1298 - 1309 (2006).

155. X. Yao, H.-B. Kraatz and R.P. Steer, Photophysics of pyrene-labelled compounds of biophysical interest. Photochem. Photobiol. Sci., 4, 191-199 (2005).

154. G. Burdzinski, J. Kubicki, A. Maciejewski, R.P. Steer, S. Velate and E.K.L. Yeow, Photochemistry and Photophysics of Highly Excited Valence States of Polyatomic Molecules: Nonalternant Aromatics, Thioketones and Metallopophyrins in “Molecular and Supramolecular Photochemistry”, Vol. 14, V. Ramamurthy and K.S. Schantze, Eds., Taylor and Francis, New York, 2005, pages 1-36.

153. E.K.L. Yeow, M. Ziolek, J. Karolczak, S.V. Shevyakov, A.E. Alsato, A. Maciejewski and R.P. Steer, Sequential, forward S2 – S2 and back S1 – S1 (cyclic) energy transfer in a novel azulene-zinc porphyrin dyad. J. Phys. Chem., A, 108, 10980-10988 (2004). 

152. J. Karolczak, D. Kowalska, A. Lukaszewicz, A. Maciejewski and R.P. Steer, Photophysical studies of porphyrins and metalloporphyrins: accurate measurements of fluorescence spectra, and fluorescence quantum yields for Soret band excitation of zinc tetraphenyl porphyrin. J. Phys. Chem., A, 108, 4570-4575 (2004).

151. T.P. Lebold, E.K.L.Yeow and R.P. Steer, Fluorescence quenching of the S1 and S2 states of zinc meso-tetrakis(4-sulfonatophenyl)porphyrin by halide ions. Photochem. Photobiol. Sci., 3, 160-165 (2003).

150. E.K.L. Yeow and R.P. Steer, Energy transfer Involving higher electronic states:  a new direction for molecular logic gates. Chem. Phys. Letters, 377, 391-398 (2003).

149. Y. Li and R.P. Steer, Kinetics of disaggregation of a non-covalent zinc tetraphenylporphyrin dimer in solution. Chem. Phys. Letters, 373, 94-99 (2003).

148. E.K.L. Yeow and R.P. Steer, Dynamics of electronic energy transfer from the S2 State of azulene to the S2 State of a zinc porphyrin. Phys. Chem. Chem. Phys., 5, 97-105 (2003).

147. P. Aich, R.J.S. Skinner, S.D. Wettig, R.P. Steer and J.S. Lee, Long range molecular wire behaviour in a metal complex of DNA. J. Biomol. Struct. Dynam., 20, 93-98 (2002).

146. A.M. Warsylewicz, K.J. Falk and R.P. Steer, Dynamics of the B excited state of thiophosgene.  Chem. Phys. Letters, 352, 48-56 (2002).

145. J. Kubicki, A. Maciejewski, M. Milewski, T. Wrozowa and R.P. Steer, The relaxation of electronically excited molecules: effects of alkyl substitution on the S2 and T1 states of benzopyranthione in solution. Phys. Chem. Chem. Phys., 4, 173-179 (2002).

144. L.C.T. Shoute, S. Hirayama and R.P. Steer, Vibronically selective intersystem crossing in van der Waals complexes of 9-cyanoanthracene with xenon. Chem. Phys. Letters, 338, 123-129 (2001).

143. S.N. Smith and R.P. Steer, The photophysics of lissamine rhodamine B sulphonyl chloride in aqueous solution: implications for fluorescent protein-dye conjugates. J. Photochem. Photobiol. A, 139, 151-156  (2001).

142. M. Sikorski, E. Sikorska, A. Koziolowa, R. Gonzalez-Moreno, J.L. Bourdelande, R.P. Steer and F. Wilkinson, Photophysical properties of lumichromes in water. J. Photochem. Photobiol. B, 60, 114-119 (2001).

141. V.J. MacKenzie and R.P. Steer, Intermolecular interactions between tropolone and fluoro-methanes. Can. J. Phys., 79, 483-499 (2001). (Gerhard Herzberg Festschrift)

140. L.C.T. Shoute, K.J. Falk and R.P. Steer, Spectroscopy and photophysics of 5-nitrotropolone in condensed media. Chem. Phys. Letters, 332, 359-366 (2000).

139. J.C. Hlady and R.P. Steer, Electronic spectroscopy and structures of the van der Waals complexes of a,w-dihaloalkanes with anthracene. Chem. Phys., 260, 249-260 (2000).

138. X. Hou, S.R. Abrams, J.J. Balsevich, N. Irvine, T. Norstrom, M. Sikorski, H.K. Sinha and R.P. Steer, Synthesis and photophysical properties of fluorophore-labeled abscisic acid. Can. J. Chem., 78, 963-974 (2000).

137. L.C.T. Shoute, V.J. MacKenzie, K.J. Falk, A. Warsylewicz and R.P. Steer, Spectroscopy and photophysics of tropolone in condensed media. Phys. Chem. Chem. Phys., 2, 1-9 (2000).


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