{"94611":{"#nid":"94611","#data":{"type":"event","title":"(1121) Prof. Sven Stafstr\u00f6m","body":[{"value":"\u003Cp\u003EProf. Sven Stafstr\u00f6m, Link\u00f6ping University\n\u003C\/p\u003E\n\u003Cp\u003EElectron localization and charge transport in DNA\n\u003C\/p\u003E\n\u003Cp\u003ELong distance charge transfer, or charge transport, in DNA is of great importance both for the function of DNA during oxidative stress and for the potential use of DNA in\u003Cbr \/\u003E\nmolecular-scale electronic devices. Charge transport is made possible due to the electronic overlap between the base-pairs along the DNA strand. However, due to the different eigen-energies of the relevant molecular orbitals of the guanine, cytosine, adenine and thymine nucleotides, the DNA strand can be considered as a disordered system in which the states are localized. Using the method of transfer matrices we have calculated the localization length in \u0026#955;-DNA and found that the electronic states are localized to individual nucleotides. Based on the derived electron localization lengths we have used a Monte Carlo approach to simulate hopping transport between these localized states. From these simulations we obtain a detailed picture of how the transfer rate varies with temperature and applied electric field strength. We can also present details of the transport, for instance the average hopping distance and which nucleotides that are involved in the transport process.\n\u003C\/p\u003E\n\u003Cp\u003EFor more information contact \u003Ca href=\u0022mailto:jean-luc.bredas@chemistry.gatech.edu\u0022\u003EDr. Jean-Luc Br\u0026#233;das\u003C\/a\u003E (404-385-4986).\u003C\/p\u003E","summary":null,"format":"limited_html"}],"field_subtitle":"","field_summary":[{"value":"Prof. Sven Stafstr\u00f6m, Link\u00f6ping University\n\nElectron localization and charge transport in DNA","format":"limited_html"}],"field_summary_sentence":[{"value":"Prof. Sven Stafstr\u00f6m, Linkoping University"}],"uid":"27275","created_gmt":"2006-11-20 01:00:00","changed_gmt":"2016-10-08 01:57:32","author":"Shirley Tomes","boilerplate_text":"","field_publication":"","field_article_url":"","field_event_time":{"event_time_start":"2006-11-21T10:00:00-05:00","event_time_end":"2006-11-21T11:00:00-05:00","event_time_end_last":"2006-11-21T11:00:00-05:00","gmt_time_start":"2006-11-21 15:00:00","gmt_time_end":"2006-11-21 16:00:00","gmt_time_end_last":"2006-11-21 16:00:00","rrule":null,"timezone":"America\/New_York"},"extras":[],"groups":[{"id":"85951","name":"School of Chemistry and Biochemistry"}],"categories":[],"keywords":[{"id":"6594","name":"organic materials"}],"core_research_areas":[],"news_room_topics":[],"event_categories":[{"id":"1795","name":"Seminar\/Lecture\/Colloquium"}],"invited_audience":[],"affiliations":[],"classification":[],"areas_of_expertise":[],"news_and_recent_appearances":[],"phone":[],"contact":[{"value":"\u003Cstrong\u003EShirley Tomes\u003C\/strong\u003E\u003Cbr \/\u003EChemistry \u0026amp; Biochemistry\u003Cbr \/\u003E\u003Ca href=\u0022http:\/\/www.gatech.edu\/contact\/index.html?id=st81\u0022\u003EContact Shirley Tomes\u003C\/a\u003E\u003Cbr \/\u003E\u003Cstrong\u003E404-894-0591\u003C\/strong\u003E","format":"limited_html"}],"email":[],"slides":[],"orientation":[],"userdata":""}}}