Polyfluorenes optical properties

J. Cornil, I. Gueli, A. Dkhissi, J.C. Sancho-Garcia, E. Hennebicq, J.P. Calbert, V. Lemaur, D. Beljonne, and J.L. Bredas, Electronic and optical properties of polyfluorene and fluorene-based copolymers a quantum-chemical characterization, J. Chem. Phys., 118 6615-6623, 2003. 

Although the optical properties of polyfluorenes are attractive, the electrical properties are, if anything, even more so. Charge carrier mobilities are a key factor in determining the performance of polymer LEDs because of the requirement of both balanced injection and transport of electrons and holes. Charge carrier mo-... 

The optical properties of polyfluorene make it an ideal system in which to investigate Dexter transfer. Fig. 10.41a shows the PA spectrum of an undoped PFO film, measured at 80 K.2 The PFO film was excited with a pump beam at... 

Bradley DDC, Grell M, Long X, Mellor H, Grice A, Inbasekaran M, Woo EP (1997) Influence of aggregation on the optical properties of a polyfluorene. Opt Probes Conjugated Polym 3145 254-259... 

T. P. (2011) Investigation of the optical properties of polyfluorene/ZnO nanocomposites. Thin Solid Films, 519, 3997-4003. 

Liu, X.-G., X.-J. Xing, Z.-N. Gao, B.-S. Wang, S.-X. Tai, and H.-W. Tang (2014). influence of three anionic gemini surfactants with different chain lengths on the optical properties of a cationic polyfluorene. Langmuir "iOilly. 3001-3009. 

Other peptide-polymer conjugates with interesting optical properties are rod-rod systems with 7i-conjugated aromatic polymers. The latter are appealing systems because of their optoelectronic and photoconductive properties, which strongly depend on the solid state morphology. Jenekhe and coworkers reported on triblock copolymers with a polyfluorene middle block and PBLG outer blocks... 

H.-Z. Tang, M. Fujiki, and M. Motonaga, Alkyl side chain effects of optically active polyfluorenes on their chiroptical absorption and emission properties, Polymer, 43 6213-6220, 2002. 

As the archetypical blue emitting polymer, polyfluorene has been studied extensively using a wealth of optical techniques to elucidate its photophysical properties. Moreover, as it is a simple homopolymer that can be synthesized to very high purity, it offers a unique platform to help us understand many aspects of the excited state behavior of conjugated polymers in general. Here we address the main properties associated with excited state, i.e. exciton, behavior and the many possible interactions between excitons that can occur, although this is by no means an exhaustive review. 

Measuring the steady state optical absorption and emission properties of any luminescent polymer is the most basic but fundamental photophysical measurement we can make. Figure 1 depicts both the absorption and emission spectra for a series of polyfluorene oligomers and poly[9,9-di- -(2-ethylhexyljfluorene] (PF2/6), along with the fully rigid ladder type MeLPPP. 

Fluorene and polyfluorene derivatives are fluorescent building blocks widely used as materials for application in OLEDs, in which their optoelectronic properties are imbued by their inherent high fluorescence yield and their extended conjugation. On the other hand, PEDOT is one of the most well-known thiophene derivatives and it is largely applied in many electrochemical and optical devices. Therefore, it is expected that a material combining the properties of EDOT and fluorene might be an excellent candidate for application in optoelectronic devices. Nie et reported the synthesis of an EDOT-bis-substituted fluorene monomer... 

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