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dc.contributor.advisor Halas, Naomi J.
dc.creatorHale, Gregory D.
dc.date.accessioned 2009-06-04T08:10:35Z
dc.date.available 2009-06-04T08:10:35Z
dc.date.issued 1997
dc.identifier.urihttp://hdl.handle.net/1911/17091
dc.description.abstract A thorough knowledge of the excited state dynamics in conjugated polymers is necessary for efficient use of these novel materials. Triplet excitons are believed to play an important role in conjugated polymer-based device operation. Triplet excitons are also believed to play a primary role in photo-oxidative degredation of polymer devices. Two-photon photoemission is used to probe triplet exciton relaxation dynamics in pristine conjugated polymer films and triplet-triple annihilation is determined to be an important deexcitation mechanism. Controlled photo-oxidation of conjugated polymer films is studied using two-photon photoemission. The triplet exciton-derived photoemission peak is observed to shift and narrow dramatically upon photo-oxidation. The peak narrowing is attributed to narrowing of the distribution of polymer conjugation lengths in the film. The peak shift is attributed to formation of defects at the ends of the polymer chains which change the average triplet exciton energy.
dc.format.extent 55 p.
dc.format.mimetype application/pdf
dc.language.iso eng
dc.subjectPolymer chemistry
Condensed matter physics
Optics
dc.title Triplet exciton dynamics in conjugated polymer films
dc.type.genre Thesis
dc.type.material Text
thesis.degree.department Chemistry
thesis.degree.discipline Natural Sciences
thesis.degree.grantor Rice University
thesis.degree.level Masters
thesis.degree.name Master of Science
dc.identifier.citation Hale, Gregory D.. "Triplet exciton dynamics in conjugated polymer films." (1997) Master’s Thesis, Rice University. http://hdl.handle.net/1911/17091.


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