Professor Ian Gentle


School of Chemistry and Molecular Biosciences
Faculty of Science
+61 7 336 54800


My research is based on organic materials for uses including energy storage, solar cells, light emitting diodes and sensors. The way that they pack into thin films and the processes that occur at the interfaces between materials are the main areas of interest.

Examples of specific areas of research are:

  • Understanding structure in organic optoelectronic devices - Organic devices such as organic light emitting diodes, solar cells and sensors, are constructed using multiple layers of materials that perform different functions such as emitting light and charge transport. The morphology and interaction betweens these layers are very important and we study structure and diffusion in layers and at interfaces using such techniques as X-ray and neutron reflectometry, X-ray diffraction and electron microscopy.

  • Materials for energy storage - We are developing new materials for use as cathodes in high-energy rechargeable batteries, particularly lithium sulfur batteries, and supercapacitors. Materials developed so far show potential increases in energy density of 3-5x that of lithium ion batteries.


  • Doctor of Philosophy, University of Sydney
  • Bachelor (Honours) of Science (Advanced), University of Sydney


View all Publications


  • Doctor Philosophy

  • Doctor Philosophy

  • Doctor Philosophy

View all Supervision


Featured Publications


Book Chapter

  • Mostert, A. B., Meredith, P., Powell, B. J., Gentle, I. R., Hanson, G. R and Pratt, F. L. (2016). Understanding melanin: a nano-based material for the future. Nanomaterials: science and applications. (pp. 175-202) edited by Deborah Kane, Adam Micolich and Peter Roger. Boca Raton, FL, United States: Pan Stanford. doi: 10.1201/b20041-8

  • Yu, Aimin, Gentle, Ian R. and Lu, Gao Qing (2010). Preparation and application of bio-inspired colloidal systems. Bio-inspired nanomaterials and nanotechnology. (pp. 245-261) edited by Yong Zhou. New York, United States: Nova Biomedical Books.

Journal Article

Conference Publication

  • Meredith, P., Mostert, B., Gentle, I. R., Hanson, G., Tandy, K., Namdas, E., Pratt, F. and Powell, B. J. (2011). Is melanin a semiconductor: The mysteries of electrical conduction and melanin bioelectronics?. ipcc2011: International Pigment Cell Conference. Skin and Other Pigment Cells: Bridging Clinical Medicine and Science, Bordeaux, France, 20-24 September 2011. Malden, MA, U.S.A.: Wiley-Blackwell Publishing. doi: 10.1111/j.1755-148X.2011.00885.x

  • Lee, Kwan H., Schwenn, Paul E., Smith, Arthur R. G., Cavaye, Hamish, Shaw, Paul E., James, Michael, Krueger, Karsten B., Gentle, Ian R., Meredith, Paul and Burn, Paul L. (2011). Vertical morphology in solution-processed organic solar cells. International Quantum Electronics Conference, IQEC 2011 and Conference on Lasers and Electro-Optics, CLEO Pacific Rim 2011, Sydney, NSW Australia, 28 August - 1 September 2011. Piscataway, NJ United States: I E E E. doi: 10.1109/IQEC-CLEO.2011.6194096

  • Ramli, S, Ross, BP and Gentle, IR (2009). Formulation and physical characterization of microemulsions containing isotretinoin. International Conference on Biomedical and Pharmaceutical Engineering, Singapore, Republic of Singapore, 2-4 December 2009. Piscataway, N.J, U.S.A.: IEEE - Institute for Electrical and Electronic Engineers. doi: 10.1109/ICBPE.2009.5384088

  • Yu, A. M., Liu, S. M., Lu, G. Q. and Gentle, I. R. (2009). Hybrid nanocomposite colloidal crystals via in-situ synthesis of nanoparticles within polyelectrolyte shell. 6th International Conference on Nanoscience and Technology, Beijing, China, 4- 6 June 2007. Valencia, CA, U.S.A.: American Scientific Publishers. doi: 10.1166/jnn.2009.C149

  • Kirby, N., Boldeman, J. W., Gentle, I. and Cookson, D. (2007). Conceptual design of the small angle scattering beamline at the Australian Synchrotron. 9th International Conference on Synchrotron Radiation Instrumentation (SRI 2006), Daegu, South Korea, 28 May - 2 June 2006. College Park, MD, U.S.A.: American Institute of Physics. doi: 10.1063/1.2436203

  • Baldwin, K., Bell, C. A., Blakey, I., Friese, M., Gentle, I., Schiller, T. L., Talbot, C. and Whittaker, A. (2006). SANS of four-layer polyelectroyte nanoparticles assembled using layer-by-layer deposition. Australian Polymer Symposium (APS), Rotorua, New Zealand, 5-9 February 2006.

  • Baldwin, K., Gentle, I., Friese, M., Talbot, C. and Whittaker, A. (2005). Hyperpolarised 129Xenon NMR for Surface Analysis. 2005 International Chemical Congress of Pacific Basin Societies (Pacifichem 2005), Honolulu, Hawaii, USA, 15-20 December, 2005. Washington, D.C: American Chemical Society.

  • Baldwin, K., Gentle, I., Friese, M., Talbot, C. and Whittaker, A. (2004). Hyperpolarised 129Xenon NMR for biomaterial surface analysis. 27th Australian Polymer Symposium, The University of Adelaide, 28 November - 2 December 2004. Centre for Magnetic Resonance - RACI Polymer Division: University of Queensland.

  • Liu, Y., Yan, Z. F., Lu, M.G., Wood, B. J. and Gentle, I. R. (2003). XPS study of Cu-Ga2O3/ZrO2 catalyst for methanol synthesis. 3rd Asia-Pacific Congress on Catalysis, Dalian, China, 12-15 October, 2003. Amsterdam, The Netherlands: Elsevier.

  • Gentle, I. R. (2002). Synchrotron X-ray methods in studies of thin organic film structure. Australian X-ray Analytical Association Meeting, Newcastle, NSW, February, 2002.

  • Tran, M. L., Gentle, I. R. and Gahan, L. R. (1999). Tailoring selective surfaces for metal ion uptake. 21st Australian Colloid and Surface Chemistry Student Conference, Morpeth, NSW, 27 September - 1 October 1999. Newcastle: Univ. of Newcastle.

  • Gentle, I. R. (1999). The Australian synchrotron program in chemical research. Workshop on the Applications of Synchrotron Radiation to Chemical and Material Sciences, Chicago, USA, 29 - 30 June 1999. Chicago, USA: Consortium for Advanced Radiation Sources.

  • Fong, C., Lawrie, G. A. and Gentle, I. R. (1999). The application of small angle scattering to Bowen Basin coal macerals. Joint AINSE-ANU Symposium on Small Angle Scattering and Reflectivity, Lucas Heights, NSW, 30 September - 1 October 1999. Sydney: AINSE.

  • Foran, Garry J., Garrett, Richard F., Gentle, Ian R., Creagh, Dudley C., Peng, Jian Bang and Barnes, Geoffrey T. (1998). Focusing monochromator and imaging-plate camera for grazing-incidence diffraction studies of thin films. 6th International Conference on Synchrotron Radiation Instrumentation (SRI'97), Himeji Japan, Aug 04-08, 1997. Malden, MA, United States: Wiley-Blackwell Publishing. doi: 10.1107/S0909049597017287

Grants (Administered at UQ)

PhD and MPhil Supervision

Current Supervision

Completed Supervision