Synthesis, electron mobility, and electroluminescence of a polynorbornene-supported silole

Zhan, Xiaowei; Haldi, Andreas; Yu, Junsheng; Kondo, Takeshi; Domercq, Benoît; Cho, Jian-Yang; Barlow, Stephen; Kippelen, Bernard; Marder, Seth R.

doi:10.1016/j.polymer.2008.11.035

Cited by 14 publications

(5 citation statements)

References 61 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…LEDs were fabricated to compare the polymers P1 – P3 , which have a common polymethacrylate backbone and the three different carbazole-oxadiazole motifs as side groups, as host matrixes for the green phosphor Ir(ppy) 3 (Chart ). As in some of our previous work, ,, poly-TPD-F , a copolymer of monomers functionalized with a bis(diarylamino)biphenyl hole-transport moiety and a photo-cross-linkable cinnamate group, shown in Chart was used as a solution-processable hole-transport layer; cross-linking after 1 min of UV irradiation renders this film insoluble permitting the deposition of the polymeric emissive layer from solution. 2,9-Dimethyl-4,7-diphenyl-1,10-phenanthroline, BCP (Chart ), was vacuum-deposited as an electron-transport layer, and finally a LiF/Al cathode was deposited to give an overall device structure ITO/poly-TPD-F(35 nm)/polymer:Ir(ppy) 3 (6.0%)(40 nm)/BCP(40 nm)/LiF(2.5 nm)/Al(200 nm).…”

Section: Resultsmentioning

confidence: 91%

Polymers with Carbazole-Oxadiazole Side Chains as Ambipolar Hosts for Phosphorescent Light-Emitting Diodes

et al. 2011

Self Cite

View full text Add to dashboard Cite

Polymethacrylates, polystyrenes, and polynorbornenes bearing 2-(3-(carbazol-9-yl)phenyl)-5-phenyl-1,3,4-oxadiazole, 2-(4-(carbazol-9-yl)phenyl)-5-phenyl-1,3,4-oxadiazole, 2-(3,5-di(carbazol-9-yl)phenyl)-5-phenyl-1,3,4-oxadiazole) groups linked to the polymer backbone through the 3-position of their terminal phenyl groups have been synthesized for use as solution-processable ambipolar hosts for phosphorescent light-emitting diodes. The polymers exhibit good thermal stabilities, with no weight loss below 350 °C, and have glass-transition temperatures in the range 118–209 °C. Spectroscopic, electrochemical, and quantum-chemical data for small-molecule model compounds suggest that the side chain groups are suitable hosts for a range of phosphors, including the green-emitter fac-tris(2-phenylpyridinato-N,C 2′)iridium (Ir(ppy)3). Light-emitting diodes were fabricated, each with a solution-processed photo-cross-linked hole-transport layer, a solution-processed emissive layer composed of a carbazole-oxadiazole-functionalized polymethacrylate doped with Ir(ppy)3, and an evaporated electron-transport layer. The polymer with 2-(3,5-(dicarbazol-9-yl)phenyl)-5-phenyl-1,3,4-oxadiazole units in the side chain exhibited the lowest turn-on voltage (6.0 V), and the highest efficiency (external quantum efficiency of 10.0%, current efficiency of 34.1 cd/A).

show abstract

Section: Resultsmentioning

confidence: 91%

Polymers with Carbazole-Oxadiazole Side Chains as Ambipolar Hosts for Phosphorescent Light-Emitting Diodes

et al. 2011

Self Cite

View full text Add to dashboard Cite

show abstract

“…The ring-opening metathesis polymerisation (ROMP) method could control the stereoregularity [51] and cis-trans content [52], produce a high molecular weight [53], and allow the formation of block copolymers [54] and terminal functionalities [50]. The ROMP method also offers the possibility of producing polymers with controlled molecular weights and low polydispersity.…”

Section: Polynorbornenes (Pnbs)mentioning

confidence: 99%

Recent advances in electrochromic polymers

Abidin

Zhang

Wang

et al. 2014

Polymer

View full text Add to dashboard Cite

“…Although these half-lifetimes for all these devices with solution-processed hole-transport layers are much less than that for an analogous control device based on vapor-deposited TPD (36000 s), the data clearly show that, at least for these systems, the UV cross-linking process itself (when optimized) does not adversely affect OLED lifetime. The successful identification of conditions under which these polymers can be cross-linked without significant impacts on device performance (relative to non-cross-linked analogues) has led to subsequent use of cross-linked 45 in OLEDs as a hole-transport material onto which polymeric electron-transport or emissive − layers are solution-processed.…”

Section: Cross-linking Chemistriesmentioning

confidence: 99%

Approaches to Solution-Processed Multilayer Organic Light-Emitting Diodes Based on Cross-Linking

2010

Self Cite

View full text Add to dashboard Cite

The fabrication of multilayer organic light-emitting diodes through solution processing presents challenges, especially regarding dissolution of the first layer during deposition of a second layer. One possible approach to this problem is to insolubilize the first layer using cross-linking. Cross-linking has also been used to control the morphological stability and aggregation phenomena of the active organic materials. In this short review, we discuss the alternative chemically, thermally, and photochemically promoted cross-linking chemistries that have been examined in the context of organic light-emitting diodes including: the hydrolysis of silicon compounds to form siloxanes; the polymerization of styrene, acrylate, and oxetane groups; and the dimerization of trifluorovinyl ethers, benzocyclobutenes, and cinnamates.

show abstract

Synthesis, electron mobility, and electroluminescence of a polynorbornene-supported silole

Cited by 14 publications

References 61 publications

Polymers with Carbazole-Oxadiazole Side Chains as Ambipolar Hosts for Phosphorescent Light-Emitting Diodes

Polymers with Carbazole-Oxadiazole Side Chains as Ambipolar Hosts for Phosphorescent Light-Emitting Diodes

Recent advances in electrochromic polymers

Approaches to Solution-Processed Multilayer Organic Light-Emitting Diodes Based on Cross-Linking

Contact Info

Product

Resources

About