Jill Meadows
Research
My research is in the area of mesoporous silica nanoparticles and follows on from the work of Christabel Fowler and Sajani Sadasivan. Nanoparticles of MCM-41 were synthesised by a unique method of dilution and neutralisation. Transmission electron Micrsocopy (TEM) and X-Ray Diffraction techniques were used to confirme the mesostructured interior of the particles. Organofunctionalised particles could also be prepared by addition of 10mol% organosilane to the synthesis mixture. Allyl and amino funtionalised particles were spherical and similar to unfunctionalised particles but introduction of thiol groups lead to a change in morphology towards a worm-like structure.

My work involves the aggregation and ordering of these different types of particles to obtain structures linking different morphologies, functionalities and porosities. One method involves a seeding technique, using pre-prepared particles to seed the growth of others. The second method is preparation of solid Microspheres by sonication of particles suspended in toluene using water droplets as templates.

I also work on the template-directed synthesis of silica-coated J-aggregate nanotapes, which involves the trapping of porphyrin assemblies in a fine coating of silica.

My final project covers the study of cellulose nanorods and their use as templates for porous materials.

Outside the world of Chemistry I am involved in the Postgraduate Union and help to look after the academic, welfare and social needs of Bristol’s postgraduate community, http://www.pgu.bris.ac.uk/. I also enjoy yoga at the union and have just taken up trampolining. I spend most of my weekends exploring Bristol and trying to sample as many wonderful bars and restaurants as possible!

Publications
Chem Comm Inside cover

“Template-directed synthesis of silica-coated J-aggregate nanotapes”
Philippa J. Meadows, Erik Dujardin, Simon R. Hall and Stephen Mann
Chemical Communications, 2005, 3621
“Production of Ultrafine Single-Crystal Copper Wires through Electron Beam Irradiation of Cu-containing Zeolite X”
Paul A. Anderson, Michael J. Edmondson, Peter P. Edwards, Prof. Ian Gameson, P. Jill Meadows, Simon R. Johnson, Wuzong Zhou
Zeitschrift fur anorganische und allgemeine Chemie, 2005, 631 (2-3), 443

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