Synthesis and properties of NLO chromophores with fine-tuned gradient electronic structures
文献类型：期刊论文
| 作者 | Ma, Xiaohua1; Ma, Fei2; Zhao, Zhenhua1; Song, Naiheng1; Zhang, Jianping2 |
| 刊名 | JOURNAL OF MATERIALS CHEMISTRY
 |
| 出版日期 | 2009 |
| 卷号 | 19期号:19页码:2975-2985 |
| ISSN号 | 0959-9428 |
| DOI | 10.1039/b817789a |
| 英文摘要 | A novel series of heterocycle-based NLO chromophores based on different combinations of auxiliary donor (i.e., benzene, thiophene and pyrrole) and auxiliary acceptor (i.e., thiazole with different regiochemistries) were designed and synthesized. Due to the different electron-rich and poor nature of the auxiliary donors and acceptors, respectively, the resulting NLO chromophores have systematically varied ground-state electronic structures, as evidenced by the (1)H NMR, CV and UV-vis investigations. The nonlinear optical properties of the resulting NLO chromophores were studied by UV-vis spectroscopy, Hyper-Rayleigh scattering (HRS), and semi-empirical computations. All the chromophores have very large molecular hyperpolarizabilities (beta(1000 nm)) in the range of 704-1500 x 10(-30) esu (or beta(0), 318-768 x 10(-30) esu), which showed a great sensitivity to the gradient electronic structures. Upon increasing the electron density from benzene to thiophene and to pyrrole, substantial increases in beta(0) were observed; significantly larger beta(0) values were also observed for NLO chromophores based on "matched'' thiazole (C2 is connected to the acceptor) than those based on "un-matched'' thiazole (C5 is connected to the acceptor). TGA investigations showed good thermal stability for the resulting NLO chromophores. However, with the increase of electron density of the auxiliary donor, a decrease in thermal and photochemical stability was observed. It is interesting to note that NLO chromophores based on triarylamine as the donor and thiazole as the auxiliary acceptor exhibited not only high thermal stability but also very large beta(0) values. |
| 语种 | 英语 |
| WOS记录号 | WOS:000265919300015 |
| 出版者 | ROYAL SOC CHEMISTRY |
| 源URL | [http://ir.iccas.ac.cn/handle/121111/68373]  |
| 专题 | 中国科学院化学研究所 |
| 通讯作者 | Song, Naiheng |
| 作者单位 | 1.Peking Univ, Dept Polymer Sci & Engn, Beijing Natl Lab Mol Sci,Minist Educ, Coll Chem & Mol Engn,Key Lab Polymer Chem & Phys, Beijing 100871, Peoples R China 2.Renmin Univ China, Dept Chem, Beijing 100872, Peoples R China |
| 推荐引用方式 GB/T 7714 | Ma, Xiaohua,Ma, Fei,Zhao, Zhenhua,et al. Synthesis and properties of NLO chromophores with fine-tuned gradient electronic structures[J]. JOURNAL OF MATERIALS CHEMISTRY,2009,19(19):2975-2985. |
| APA | Ma, Xiaohua,Ma, Fei,Zhao, Zhenhua,Song, Naiheng,&Zhang, Jianping.(2009).Synthesis and properties of NLO chromophores with fine-tuned gradient electronic structures.JOURNAL OF MATERIALS CHEMISTRY,19(19),2975-2985. |
| MLA | Ma, Xiaohua,et al."Synthesis and properties of NLO chromophores with fine-tuned gradient electronic structures".JOURNAL OF MATERIALS CHEMISTRY 19.19(2009):2975-2985. |
入库方式： OAI收割
来源：化学研究所
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