An effective strategy for small molecular solution-processable iridium(III) complexes with ambipolar characteristics: towards efficient electrophosphorescence and reduced efficiency roll-off
文献类型：期刊论文
| 作者 | Cai JX ; Ye TL ; Fan XF ; Han CM ; Xu H ; Wang LL ; Ma DG ; Lin Y ; Yan PF |
| 刊名 | journal of materials chemistry
 |
| 出版日期 | 2011 |
| 卷号 | 21期号:39页码:15405-15416 |
| 关键词 | LIGHT-EMITTING-DIODES ORGANIC ELECTROLUMINESCENT DEVICES PHOSPHORESCENT EMISSION AIPE BIPOLAR HOST QUANTUM EFFICIENCY CHELATING POLYMERS CHARGE-TRANSPORT DENDRIMERS CARBAZOLE BACKBONE |
| ISSN号 | 0959-9428 |
| 通讯作者 | xu h |
| 中文摘要 | a series of electrophosphorescent small molecular ir(3+) complexes irpbio(2), irpbico, irpbio(4) and irpbic(2)o(2) for solution-processable host-free organic light-emitting diodes (oleds) were designed and synthesized, in which the electron-transporting 1,3,4-oxadiazole (oxd) and hole-transporting carbazole moieties were introduced through aliphatic chains to achieve balanced carrier injection/transporting. the coordinatable oxd groups were successfully and conveniently introduced through the post-substitution of ir(3+) cores. the photophysical investigation showed that compared with the single-position substituted counterparts, the double-position substitution is superior in restraining the quenching effect in solid states to endow the corresponding complexes with the much higher photoluminescence quantum yield (plqy) in the film. the influences of peripheral carrier transporting (ct) moieties on the energy levels of frontier molecular orbitals were investigated with ups analysis and density function theory calculation. the dramatic electroluminescent (el) performance of irpbic(2)o(2) based on its host-free spin-coat phosphorescent organic light-emitting diodes (pholeds), especially the remarkably restrained efficiency roll-off less than 16% at 1000 cd m(-2) was realized, which demonstrated that the combined modification of the effective segregation of emitting cores by multiposition encapsulation and the balanced carrier injection/transporting through bipolar substitution is an effective strategy for realizing high-efficiency small molecular electrophosphorescent materials with the features of solution processability and strong restraining effect on quenching for host-free devices. |
| 收录类别 | SCI收录期刊论文 |
| 语种 | 英语 |
| WOS记录号 | WOS:000295278000046 |
| 公开日期 | 2012-06-11 |
| 源URL | [http://ir.ciac.jl.cn/handle/322003/44929]  |
| 专题 | 长春应用化学研究所_长春应用化学研究所知识产出_期刊论文 |
| 推荐引用方式 GB/T 7714 | Cai JX,Ye TL,Fan XF,et al. An effective strategy for small molecular solution-processable iridium(III) complexes with ambipolar characteristics: towards efficient electrophosphorescence and reduced efficiency roll-off[J]. journal of materials chemistry,2011,21(39):15405-15416. |
| APA | Cai JX.,Ye TL.,Fan XF.,Han CM.,Xu H.,...&Yan PF.(2011).An effective strategy for small molecular solution-processable iridium(III) complexes with ambipolar characteristics: towards efficient electrophosphorescence and reduced efficiency roll-off.journal of materials chemistry,21(39),15405-15416. |
| MLA | Cai JX,et al."An effective strategy for small molecular solution-processable iridium(III) complexes with ambipolar characteristics: towards efficient electrophosphorescence and reduced efficiency roll-off".journal of materials chemistry 21.39(2011):15405-15416. |
入库方式： OAI收割
来源：长春应用化学研究所
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