Nonlinear optical chromophores based on Dewar's rules: enhancement of electro-optic activity by introducing heteroatoms into the donor or bridge
文献类型：期刊论文
| 作者 | Xu, Huajun1,2; Yang, Dan1,2; Liu, Fenggang1,2; Fu, Mingkai2,3; Bo, Shuhui; Liu, Xinhou1; Cao, Yuan1,4 |
| 刊名 | PHYSICAL CHEMISTRY CHEMICAL PHYSICS
 |
| 出版日期 | 2015 |
| 卷号 | 17期号:44页码:29679-29688 |
| 英文摘要 | In this work, we investigated the enhancement of the electro-optic response by introducing electronrich heteroatoms as additional donors into the donor or bridge of a conventional second-order nonlinear optical chromophore. A series of chromophores C2-C4 based on the same tricyanofuran acceptor (TCF) but with different heteroatoms in the alkylamino phenyl donor (C2 or C3) or thiophene bridge (C4) have been synthesized and systematically investigated. Density functional theory calculations suggested that chromophores C2-C4 had a smaller energy gap and larger first-order hyperpolarizability (beta) than traditional chromophore C1 due to the additional heteroatoms. Single crystal structure analyses and optimized configurations indicate that the rationally introduced heteroatom group would bring larger beta and weaker intermolecular interactions which were beneficial for translating molecular b into macro-electro-optic activity in electric field poled films. The electro-optic coefficient of poled films containing 25 wt% of these new chromophores doped in amorphous poly-carbonate afforded values of 83 and 91 pm V-1 at 1310 nm for chromophores C3 and C4, respectively, which are two times higher than that of the traditional chromophore C1 (39 pm V-1). High r(33) values indicated that introducing heteroatoms to the donor and bridge of a conventional molecular structure can efficiently improve the electron-donating ability, which improves the b. The long-chain on the donor or bridge part, acting as the isolation group, may reduce inter-molecular electrostatic interactions, thus enhancing the macroscopic EO activity. These results, together with good solubility and compatibility with the polymer, show the new chromophore's potential application in electro-optic devices. |
| 收录类别 | SCI |
| 语种 | 英语 |
| 公开日期 | 2016-05-09 |
| 源URL | [http://ir.iccas.ac.cn/handle/121111/29246]  |
| 专题 | 化学研究所_光化学实验室 |
| 作者单位 | 1.Chinese Acad Sci, Tech Inst Phys & Chem, Key Lab Photochem Convers & Optoelect Mat, Beijing 100190, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100043, Peoples R China 3.Chinese Acad Sci, Inst Chem, Beijing Natl Laboratoly Mol Sci, Beijing 100190, Peoples R China 4.Sichuan Univ, Coll Chem Engn, Chengdu 610065, Peoples R China |
| 推荐引用方式 GB/T 7714 | Xu, Huajun,Yang, Dan,Liu, Fenggang,et al. Nonlinear optical chromophores based on Dewar's rules: enhancement of electro-optic activity by introducing heteroatoms into the donor or bridge[J]. PHYSICAL CHEMISTRY CHEMICAL PHYSICS,2015,17(44):29679-29688. |
| APA | Xu, Huajun.,Yang, Dan.,Liu, Fenggang.,Fu, Mingkai.,Bo, Shuhui.,...&Cao, Yuan.(2015).Nonlinear optical chromophores based on Dewar's rules: enhancement of electro-optic activity by introducing heteroatoms into the donor or bridge.PHYSICAL CHEMISTRY CHEMICAL PHYSICS,17(44),29679-29688. |
| MLA | Xu, Huajun,et al."Nonlinear optical chromophores based on Dewar's rules: enhancement of electro-optic activity by introducing heteroatoms into the donor or bridge".PHYSICAL CHEMISTRY CHEMICAL PHYSICS 17.44(2015):29679-29688. |
入库方式： OAI收割
来源：化学研究所
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