Hyperbranched triazine-containing polyfluorenes: Efficient blue emitters for polymer light-emitting diodes (PLEDs)

Wen, Guian; Xin, Yu; Zhu, Xiaohui; Zeng, Wen‐Jing; Zhu, Rui; Feng, Jiachun; Cao, Yong; Zhao, Lei; Wang, Lianhui; Wei, Wei; Peng, Bo; Huang, Wei

doi:10.1016/j.polymer.2006.10.032

Cited by 39 publications

(27 citation statements)

References 36 publications

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“…By the ''A2 + A 2 + B3'' approach, a series of hyperbranched triazine-containing polymer based on fluorene (P54 in Scheme 9.28) were synthesized [99]. The resulting polymers show pure blue emission and distinct suppression of aggregation-induced green emission.…”

Section: Hyperbranched Polyfluorenesmentioning

confidence: 99%

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Polyfluorenes

Zhao¹,

Liu²,

Huang³

2010

Design and Synthesis of Conjugated Polymers

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Section: Hyperbranched Polyfluorenesmentioning

confidence: 99%

“…Huang et al synthesized a main-chain-type Eu(III)-containing P143 with photo-cross-linkable group [163]. The effective inter-and/or intrachain Förster energy transfer occurs from the fluorene-excited state to the Eu(III) complex.…”

Section: Polyfluorene Copolymers With Eu(iii) Complexesmentioning

confidence: 99%

Polyfluorenes

Zhao¹,

Liu²,

Huang³

2010

Design and Synthesis of Conjugated Polymers

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“…[28] 1,3,5-Triazine is an electron-deficient group with high electron-affinity, [29] which is higher than that of oxadiazole. Hence, by introducing triazine into PFs, the electron injection and transport properties are improved.…”

Section: Hyperbranched Polyfluorenesmentioning

confidence: 99%

Polyfluorene‐Based Blue‐Emitting Materials

Zhao

Liu

Huang

2009

Macro Chemistry & Physics

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Polyfluorenes are a class of promising blue light‐emitting conjugated polymer due to their excellent optoelectronic properties. However, the applications of polyfluorenes in polymer light‐emitting diodes (PLEDs) have been hampered by the appearance of long‐wavelength green emission, leading to the problem of color purity and stability. Hence, the preparation of pure blue‐emitting polyfluorenes becomes very important for the realization of real blue‐emitting PLEDs. In this short review, we introduce the efforts made by our group to realize polyfluorenes with pure blue emission, including the incorporation of spirobifluorene units, heterofluorene units, hyperbranched, and star‐shaped structures into polymer backbones.

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“…Promising results have been demonstrated. In our recent studies, we have become interested in macromolecular materials with highly substituted 2D or 3D structure [13][14][15][16][17][18][19][20][21][22][23][24][25][26]. A novel series of monodisperse multibranched [16][17][18][19][20][21][22][23][24][25][26] or hyperbranched [13][14][15] fluorene-based materials has been developed and investigated.…”

Section: Introductionmentioning

confidence: 99%

“…In our recent studies, we have become interested in macromolecular materials with highly substituted 2D or 3D structure [13][14][15][16][17][18][19][20][21][22][23][24][25][26]. A novel series of monodisperse multibranched [16][17][18][19][20][21][22][23][24][25][26] or hyperbranched [13][14][15] fluorene-based materials has been developed and investigated. Such a highly substituted molecular structure appears to be rather promising for optoelectronic applications with superior electronic and photonic properties relative to their linear oligomer or polymer counterparts [13][14][15][16][17][18][19][20][21][22][23][24][25][26].…”

Section: Introductionmentioning

confidence: 99%

Triazatruxene-containing hyperbranched polymers: Microwave-assisted synthesis and optoelectronic properties

2010

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Hyperbranched polymer structures represent a class of high-functionality building blocks with excellent three-dimensional topology for the construction of highly substituted conjugated polymers. In this contribution, an efficient microwave synthesis protocol toward the synthesis of conjugated hyperbranched polymers is presented. A novel series of soluble hyperbranched polyfluorenes (PTF1-PTF3) incorporating triazatruxene moiety as the branch units with various branching degrees have thus been successfully constructed with good yields and high molecular weight via a facile "A2+B2+C3" approach. The structures of the hyperbranched polymers were confirmed by NMR and GPC. Their thermal, optical, and electrochemical properties of the hyperbranched polymers were also investigated. The results showed that introduction of triazatruxene units into the hyperbranched structure endowed the polymer with good thermal stability and highly amorphous properties. Photophysical investigation of PTFx revealed strong blue emission in both solution and solid states. Hyperbranched polymers with higher degree of branching and proper content of linear fluorene units exhibited better photophysical properties in terms of narrow emission spectra and relatively high quantum efficiency as well as improved thermal spectral stability. The triazatruxene branching unit also played a role in raising the HOMO energy levels relative to those of polyfluorenes that would help to improve the charge injection and transport properties. The incorporation of triazatruxene unit into hyperbranched polymers has thus explored an effective avenue for constructing optoelectronic polymers with improved functional characteristics.hyperbranched polymers, microwave synthesis, triazatruxene, polyfluorene, blue emission

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Hyperbranched triazine-containing polyfluorenes: Efficient blue emitters for polymer light-emitting diodes (PLEDs)

Cited by 39 publications

References 36 publications

Polyfluorenes

Polyfluorenes

Polyfluorene‐Based Blue‐Emitting Materials

Triazatruxene-containing hyperbranched polymers: Microwave-assisted synthesis and optoelectronic properties

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