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Controlling Interchain Interactions in Conjugated Polymers: The Effects of Chain Morphology on Exciton-Exciton Annihilation and Aggregation in MEH-PPV Films
| Content Provider | Semantic Scholar |
|---|---|
| Author | Nguyen, Thuc-Quyen Martini, Ignacio B. Schwartz, Benjamin J. |
| Copyright Year | 2000 |
| Abstract | The presence of interchain species in the photophysics of conjugated polymer films has been the subject of a great deal of controversy. In this paper, we present strong evidence that interchain species do form in conjugated polymer films, and that the degree of interchain interactions can be controlled by varying the solvent and polymer concentration of the solution from which the films are cast. Thus, much of the controversy in the literature can be resolved by noting that the polymer samples in different studies had different side groups or were prepared in different ways and thus have different degrees of interchain interaction. The photoluminescence (PL) of poly(2-methoxy-5-(2‘-ethylhexyloxy)-1,4-phenylene vinylene), MEH−PPV, changes both its spectral shape and quantum yield when the films are prepared from different solutions or when the morphology is varied by annealing. Increasing the amount of interchain interactions enhances the red portion of the film's PL, a result assigned to a combination of ... |
| Starting Page | 237 |
| Ending Page | 255 |
| Page Count | 19 |
| File Format | PDF HTM / HTML |
| DOI | 10.1021/jp993190c |
| Volume Number | 104 |
| Alternate Webpage(s) | http://www.chem.ucla.edu/dept/Faculty/schwartz/schwartz_pubs/JPCB_104_237_2000.pdf |
| Alternate Webpage(s) | http://huniv.hongik.ac.kr/~ekim/Ref_OS/141_278.pdf |
| Alternate Webpage(s) | https://doi.org/10.1021/jp993190c |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
