How do substituents affect silole emission?
文献类型：期刊论文
| 作者 | Zhao, Engui1,2,3; Lam, Jacky W. Y.1,2,3; Hong, Yuning1,2,3; Liu, Jianzhao1,2,3; Peng, Qian4; Hao, Jianhua5,6; Sung, Herman H. Y.3; Williams, Ian D.3; Tang, Ben Zhong1,2,3,7 |
| 刊名 | JOURNAL OF MATERIALS CHEMISTRY C
 |
| 出版日期 | 2013 |
| 卷号 | 1期号:36页码:5661-5668 |
| ISSN号 | 2050-7526 |
| DOI | 10.1039/c3tc30880d |
| 英文摘要 | Researchers are in constant pursuit of solid-state emitters with high emission efficiency, excellent photostability and large Stokes shift. Among them, siloles are good representatives. In this paper, we report the effect of substituent on the emission of silole. 1,1,3,4-Tetraphenylsilole (TPS) is weakly emissive at 392 nm in both solution and aggregated states. Progressive attachment of the trimethylsilylethynylphenyl (TMSEP) group to the 2,5-positions of TPS generates TPE-TMSEP and TPS-2TMSEP, which emit intensely at 491 nm and 517 nm, respectively, in the condensed phase despite their solutions giving almost no light upon photoexcitation. High solid-state quantum yields of up to 91% are deduced from their solid powders, demonstrating a phenomenon of aggregation-induced emission (AIE). Restriction of the low-frequency motions is proved to be the main cause of the AIE effect. Conformational study and theoretical calculation show that the steric and electronic effects contributed by the 3,4- and 2,5-substituents are crucial for the silole emission. |
| 语种 | 英语 |
| WOS记录号 | WOS:000323578000009 |
| 出版者 | ROYAL SOC CHEMISTRY |
| 源URL | [http://ir.iccas.ac.cn/handle/121111/46775]  |
| 专题 | 中国科学院化学研究所 |
| 通讯作者 | Tang, Ben Zhong |
| 作者单位 | 1.HKUST Shenzhen Res Inst, Shenzhen 518057, Peoples R China 2.Hong Kong Univ Sci & Technol, Inst Adv Study, Dept Chem, Div Biomed Engn, Kowloon, Hong Kong, Peoples R China 3.Hong Kong Univ Sci & Technol, Inst Mol Funct Mat, Kowloon, Hong Kong, Peoples R China 4.Chinese Acad Sci, Beijing Natl Lab Mol Sci, Inst Chem, Key Lab Organ Solids, Beijing 100190, Peoples R China 5.Hong Kong Polytech Univ, Dept Appl Phys, Hong Kong, Hong Kong, Peoples R China 6.Hong Kong Polytech Univ, Mat Res Ctr, Hong Kong, Hong Kong, Peoples R China 7.S China Univ Technol, State Key Lab Luminescent Mat & Devices, SCUT HKUST Joint Res Lab, Guangdong Innovat Res Team, Guangzhou 510640, Guangdong, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhao, Engui,Lam, Jacky W. Y.,Hong, Yuning,et al. How do substituents affect silole emission?[J]. JOURNAL OF MATERIALS CHEMISTRY C,2013,1(36):5661-5668. |
| APA | Zhao, Engui.,Lam, Jacky W. Y..,Hong, Yuning.,Liu, Jianzhao.,Peng, Qian.,...&Tang, Ben Zhong.(2013).How do substituents affect silole emission?.JOURNAL OF MATERIALS CHEMISTRY C,1(36),5661-5668. |
| MLA | Zhao, Engui,et al."How do substituents affect silole emission?".JOURNAL OF MATERIALS CHEMISTRY C 1.36(2013):5661-5668. |
入库方式： OAI收割
来源：化学研究所
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