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Our research group has been working on the synthesis of metal containing polymers incorporated with different photo or electronically active transition metal complexes.These materials were demonstrated to exhibit highly interesting photophysical properties.Different opto-electronic devices such as light emitting diodes,photovoltaic cells,and sensors have been fabricated by using these polymers as the active layer.In this talk,the use of metal containing block copolymers for the preparation of polymer-carbon nanotube hybrid materials will be presented.The copolymers were synthesized by reversible addition-fragmentation chain transfer(RAFT)polymerization.The metal containing block copolymers contain pyrene units that serve as the dispersants for both single and multi wall carbon nanotubes,of which the solubility in polar solvents could be greatly enhanced.In addition,the presence of photo active metal complexes was able to enhance the photosensitivity of the resulting hybrid materials.A new measurement technique-photoconductive atomic force microscopy-has been developed by us to measure the photocurrent response of individual carbon nanotube.Ultrafast spectroscopic techniques were also adopted to investigate the photo charge excitation and transfer processes in these hybrid materials.