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Please use this identifier to cite or link to this item: http://hdl.handle.net/10204/6328

Title: Harvesting sunlight energy: a biophysics approach
Authors: Smit, JE
Grobler, AF
Sparrow, RW
Keywords: Light harvesting
Energy transfer
Absorption spectroscopy
Sunlight
Issue Date: Apr-2011
Citation: Smit, JE, Grobler, AF and Sparrow, RW. Harvesting sunlight energy: a biophysics approach. ICWIP 2011: 4th IUPAP International Conference on Women in Physics, Stellenbosch, 5-8 April 2011
Series/Report no.: Workflow;6024
Abstract: The most efficient light harvesting and energy transfer systems are found in nature as part of the photosynthesis process. In the photosynthetic system light energy is absorbed by antenna chlorophylls and this energy is then passed onto a reaction centre chlorophyll molecule where charge separation occurs in less than 100 ps and at about 95% efficiency. It has been shown that organised connective light harvesting complexes are required for long range energy transfer. By extracting these system fragments and maximising their organisational structure, similar artificial systems for energy sources and transfer system can potentially be developed. As a matrix to stabilize the system we are using a combination of fatty acids and nitrous oxide, rather than conventional phospholipid-based combinations, which enables the production of small, elastic artificial vesicles, called Pheroidâ„¢. Previous work has shown that photosynthetic light harvesting material can be incorporated into the Pheroidâ„¢. In this study we are characterising the level of organisation through protein aggregation on the incorporated light harvesting systems using absorption spectroscopy.
Description: ICWIP 2011: 4th IUPAP International Conference on Women in Physics, Stellenbosch, 5-8 April 2011
URI: http://hdl.handle.net/10204/6328
Appears in Collections:Plant biotechnology
Structural biology
General science, engineering & technology
General research interest

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