Rigid, well-defined block copolymers for efficient light harvesting
- Univ. of Texas, Austin, TX (United States)
Chromophore-labeled polymers have been studied extensively for their potential application in long-distance energy and electron transfer. The conformational flexibility of most organic polymers, however, has prevented the successful transfer of energy over extended distances because polymer folding permits energy dissipative excimer or exciplex formation. In addition, the limited number of methods available to prepare well-defined photosensitizer-derivatized block copolymers has hindered the use of polymers as media for macroscopic photoinduced electron transfer. We report the synthesis and photophysical characteristics of a series of well-defined chromophore- and quencher-labeled block copolymers whose rigidity obviates these problems and permits interblock energy and electron transfer. We have prepared arene-derivatized polynorbornene homopolymers I, arene-dimethylaniline diblock copolymers II, and naphthalene-pentamethylbenzene-dimethylaniline triblock copolymers, III, of varying molecular weights and block lengths. 10 refs., 3 figs.
- OSTI ID:
- 6914726
- Journal Information:
- Journal of the American Chemical Society; (United States), Journal Name: Journal of the American Chemical Society; (United States) Vol. 116:14; ISSN JACSAT; ISSN 0002-7863
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
400102 -- Chemical & Spectral Procedures
400201* -- Chemical & Physicochemical Properties
400500 -- Photochemistry
AROMATICS
CONDENSED AROMATICS
COPOLYMERS
ELECTRON TRANSFER
EMISSION SPECTROSCOPY
FLUORESCENCE SPECTROSCOPY
HYDROCARBONS
ORGANIC COMPOUNDS
ORGANIC POLYMERS
PHENANTHRENE
PHOTOSENSITIVITY
POLYMERS
SENSITIVITY
SPECTROSCOPY
SYNTHESIS