Tuning the emission properties of cyclometalated platinum(II) complexes by intramolecular electron-sink/arylethynylated ligands and its application for enhanced luminescent oxygen sensing
文献类型：期刊论文
| 作者 | Wu, Wanhua1; Wu, Wenting1; Ji, Shaomin1; Guo, Huimin2; Song, Peng3; Han, Keli3; Chi, Lina1; Shao, Jingyin1; Zhao, Jianzhang1 |
| 刊名 | journal of materials chemistry
 |
| 出版日期 | 2010 |
| 卷号 | 20期号:43页码:9775-9786 |
| 英文摘要 | we have synthesized five novel cyclometalated pt(ii) complexes (aryl-ppy)pt(acac) (ppy = 2-phenyl pyridine, aryl n-butyl naphthalimide (ni) ethynylene for pt-1, n-butyl naphthalimide (ni)-ch(2) co for pt-2, 4-cyanophenyl ch(2) co for pt-3, naphthal ethynylene for pt-4 and naphthal-diketo for pt-5). for the first time, pi-conjugation of the ppy ligands was extended via the c c bond. deep red/near ir emission (638 nm-700 nm) was observed for the complex containing naphthalimide ethynylene subunit (pt-1), whereas the close analogue pt-2 (in which the linker between the ni and the ppy subunit is a -ch(2)co- group) shows a relatively blue-shifted emission (540 nm-570 nm) but much longer luminescent lifetime (tau = 25.5 mu s) than pt-1 (tau = 6.6 mu s). simultaneous fluorescence/phosphorescence emissions were observed for pt-1 and pt-2, but other complexes show sole phosphorescent emission. the red-shifted phosphorescence of the complexes compared to the model complex ppypt(acac) (486 nm) was attributed to either the significant electron-sink effect of the ni fragment (pt-1) (for which the electron withdrawing effect is stronger than the previously reported fluoren-9-one), or the extended pi-conjugation of the ppy ligand (via c c bond) (e. g. pt-4). the substantial tuning of the emission color and the luminescent lifetimes (0.86 mu s-25.5 mu s) of the complexes were rationalized by theoretical calculations (dft/tddft), i.e. the emissive triplet excited states were assigned as the normal (3)mlct state (give smaller tau values) or the novel ligand-localized (3)il emissive state (give larger tau values). with tuning the luminescent lifetimes, the luminescent o(2) sensitivity of the complexes was improved by 117-fold (stern-volmer quenching constants k(sv) = 0.234 torr(-1) for pt-2 vs. k(sv) = 0.002 torr(-1) for pt-5). |
| WOS标题词 | science & technology ; physical sciences ; technology |
| 类目[WOS] | chemistry, physical ; materials science, multidisciplinary |
| 研究领域[WOS] | chemistry ; materials science |
| 关键词[WOS] | photophysical properties ; triplet emitters ; excited-state ; acetylide chromophores ; mesoporous silica ; oled applications ; white-light ; fluorescent ; sensors ; probe |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000283603000028 |
| 公开日期 | 2015-11-17 |
| 源URL | [http://159.226.238.44/handle/321008/142010]  |
| 专题 | 大连化学物理研究所_中国科学院大连化学物理研究所 |
| 作者单位 | 1.Dalian Univ Technol, State Key Lab Fine Chem, Sch Chem Engn, Dalian 116012, Peoples R China 2.Dalian Univ Technol, Dept Chem, Sch Chem Engn, Dalian 116012, Peoples R China 3.Chinese Acad Sci, Dalian Inst Chem Phys, Dalian 116023, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wu, Wanhua,Wu, Wenting,Ji, Shaomin,et al. Tuning the emission properties of cyclometalated platinum(II) complexes by intramolecular electron-sink/arylethynylated ligands and its application for enhanced luminescent oxygen sensing[J]. journal of materials chemistry,2010,20(43):9775-9786. |
| APA | Wu, Wanhua.,Wu, Wenting.,Ji, Shaomin.,Guo, Huimin.,Song, Peng.,...&Zhao, Jianzhang.(2010).Tuning the emission properties of cyclometalated platinum(II) complexes by intramolecular electron-sink/arylethynylated ligands and its application for enhanced luminescent oxygen sensing.journal of materials chemistry,20(43),9775-9786. |
| MLA | Wu, Wanhua,et al."Tuning the emission properties of cyclometalated platinum(II) complexes by intramolecular electron-sink/arylethynylated ligands and its application for enhanced luminescent oxygen sensing".journal of materials chemistry 20.43(2010):9775-9786. |
入库方式： OAI收割
来源：大连化学物理研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。