Rational Design, Synthesis, and Optical Properties of Film-Forming, Near-Infrared Absorbing, and Fluorescent Chiromophores with Multidonors and Large Heterocyclic Acceptors
文献类型：期刊论文
| 作者 | Luo, Min1,2; Shadnia, Hooman3; Qian, Gang1,2; Du, Xiaobo1,2; Yu, Dengbin1; Ma, Dongge1; Wright, James S.3; Wang, Zhi Yuan1,3 |
| 刊名 | CHEMISTRY-A EUROPEAN JOURNAL
 |
| 出版日期 | 2009 |
| 卷号 | 15期号:35页码:8902-8908 |
| 关键词 | Absorption Chromophores Films Heterocyclic Receptors Near-infrared Photoluminescence |
| ISSN号 | 0947-6539 |
| DOI | 10.1002/chem.200900891 |
| 英文摘要 | A new series of film-forming, low-bandgap chromophores (1a,b and 2a,b) were rationally designed with aid of a computational study., and then synthesized and characterized. To realize absorption and emission above the 1000 nm wavelength, the molecular design focuses on lowering the LUMO level by fusing common heterocyclic units into a large conjugated core that acts an electron acceptor and increasing the charge transfer by attaching the multiple electron-donating groups at the appropriate positions of the acceptor core. The chromophores have bandgap levels of 1.27-0.71 eV, and accordingly absorb at 746-1003 nm and emit at 1035-1290 nm in solution. By design, the relatively high molecular weight (up to 2400 g mol(-1)) and non-coplanar structure allow these near-infrared (NIR) chromophores to be readily spin-coated as uniform thin films and doped with other organic semiconductors for potential device applications. Doping with [6,6]-phenyl-C(61) butyric acid methyl ester leads to a red shift in the absorption on]), for la and 2a. An interesting NIR electrochromism was found for 2a, with absorption being turned on at 1034 nm when electrochemically switched (at 1000 mV) from its neutral state to a radical cation state. Furthermore, a large Stokes shift (256-318 nm) is also unique for this multidonor-acceptor type of chromophore. indicating a significant structural difference between the ground state and the excited state. Photoluminescence of the film of 2a was further probed at variable temperatures and the results strongly suggest that the restriction of bond rotations certainly helps to diminish non-radiative decay and thus enhance the luminescence of these large chromophores. |
| 语种 | 英语 |
| WOS记录号 | WOS:000270045500032 |
| 出版者 | WILEY-V C H VERLAG GMBH |
| 源URL | [http://ir.iccas.ac.cn/handle/121111/68039]  |
| 专题 | 中国科学院化学研究所 |
| 通讯作者 | Wang, Zhi Yuan |
| 作者单位 | 1.Chinese Acad Sci, Changchun Inst Appl Chem, State Key Lab Polymer Phys & Chem, Changchun 130022, Peoples R China 2.Chinese Acad Sci, Grad Sch, Changchun 130022, Peoples R China 3.Carleton Univ, Dept Chem, Ottawa, ON K1S 5B6, Canada |
| 推荐引用方式 GB/T 7714 | Luo, Min,Shadnia, Hooman,Qian, Gang,et al. Rational Design, Synthesis, and Optical Properties of Film-Forming, Near-Infrared Absorbing, and Fluorescent Chiromophores with Multidonors and Large Heterocyclic Acceptors[J]. CHEMISTRY-A EUROPEAN JOURNAL,2009,15(35):8902-8908. |
| APA | Luo, Min.,Shadnia, Hooman.,Qian, Gang.,Du, Xiaobo.,Yu, Dengbin.,...&Wang, Zhi Yuan.(2009).Rational Design, Synthesis, and Optical Properties of Film-Forming, Near-Infrared Absorbing, and Fluorescent Chiromophores with Multidonors and Large Heterocyclic Acceptors.CHEMISTRY-A EUROPEAN JOURNAL,15(35),8902-8908. |
| MLA | Luo, Min,et al."Rational Design, Synthesis, and Optical Properties of Film-Forming, Near-Infrared Absorbing, and Fluorescent Chiromophores with Multidonors and Large Heterocyclic Acceptors".CHEMISTRY-A EUROPEAN JOURNAL 15.35(2009):8902-8908. |
入库方式： OAI收割
来源：化学研究所
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