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Understanding the Nature of the States Responsible for the Green Emission in Oxidized Poly(9,9-dialkylfluorene)s: Photophysics and Structural Studies of Linear Dialkylfluorene/Fluorenone Model Compounds


Reference:

Chan, K. L., Sims, M., Pascu, S. I., Ariu, M., Holmes, A. B. and Bradley, D. D. C., 2009. Understanding the Nature of the States Responsible for the Green Emission in Oxidized Poly(9,9-dialkylfluorene)s: Photophysics and Structural Studies of Linear Dialkylfluorene/Fluorenone Model Compounds. Advanced Functional Materials, 19 (13), pp. 2147-2154.

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http://dx.doi.org/10.1002/adfm.200801792

Abstract

Here, the optical properties of a series of structurally well-defined model compounds for oxidatively degraded poly(dialkylfluorenes) (PFs) are reported Specifically, linear compounds comprising one, two, or four dihexylfluorene (F) moieties together with one fluorenone (O) moiety placed either at the end or in the center of each chain (i.e., FO, FFO, FOF, FFOFF) are studied. The results support the recent observation that the photophysics of the fluorenone-centered "pentamer" (FFOFF) is most similar to that of oxidized PFs. They further demonstrate that molecule-molecule interaction is essential to activate the green emission band. Investigations by x-ray diffraction (XRD) identify the solid-state structure of a representative member of this class of compounds and reveal inter-molecular interaction through dipole-dipole coupling between neighboring fluorenone moieties.

Details

Item Type Articles
CreatorsChan, K. L., Sims, M., Pascu, S. I., Ariu, M., Holmes, A. B. and Bradley, D. D. C.
DOI10.1002/adfm.200801792
DepartmentsFaculty of Science > Chemistry
RefereedYes
StatusPublished
ID Code27162

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