A Systematic Study of Peripherally Multiple Aromatic Ester-Functionalized Poly(benzyl ether) Dendrons for the Fabrication of Organogels: Structure-Property Relationships and Thixotropic Property
文献类型：期刊论文
| 作者 | Feng, Yu1,2; Liu, Zhi-Xiong1,2; Chen, Hui1,2; Yan, Zhi-Chao1,3; He, Yan-Mei1,2; Liu, Chen-Yang1,3; Fan, Qing-Hua1,2 |
| 刊名 | CHEMISTRY-A EUROPEAN JOURNAL
 |
| 出版日期 | 2014-06-02 |
| 卷号 | 20期号:23页码:7069-7082 |
| 关键词 | Dendrimers Gelators Organogels Self-assembly Structure-property Relationships |
| ISSN号 | 0947-6539 |
| DOI | 10.1002/chem.201400157 |
| 英文摘要 | A new class of peripherally multiple aromatic ester-functionalized poly(benzyl ether) dendrons and/or dendrimers with different focal point substituents, surface groups, interior structures, as well as different generations have been synthesized and their structure-property relationships with respect to their gelation ability have been investigated systematically. Most of these dendrons are able to gel organic solvents over a wide polarity range. Evident dendritic effects were observed not only in gelation capability but also in thermotropic, morphological, and rheological characterizations. It was disclosed that subtle changes in peripheral ester functionalities and interior dendritic structures affected the gelation behavior of the dendrons significantly. Among all the dendrons studied, the second- and third-generation dendrons G0G2-Me and G0G3-Me with dimethyl isophthalates (DMIP) as peripheral groups exhibited the best capability in gelation, and stable gels were formed in more than 22 aromatic and polar organic solvents. The lowest critical gelation concentration (CGC) reached 2.0mgmL-1, indicating that approximately 1.35x104 solvent molecules could be entrapped by one dendritic molecule. Further study on driving forces in gel formation was carried out by using a combination of single-crystal/powder X-ray diffraction (XRD) analysis and concentration-dependent (CD)/temperature-dependent (TD) 1HNMR spectroscopy. The results obtained from these experiments revealed that the multiple - stacking of extended -systems due to the peripheral DMIP rings, cooperatively assisted by non-conventional hydrogen-bonding, is the key contributor in the formation of the highly ordered supramolecular and fibrillar network. In addition, these dendritic organogels exhibited unexpected thixotropic-responsive properties, which make them promising candidates with potential applications in the field of intelligent soft materials. |
| 语种 | 英语 |
| WOS记录号 | WOS:000337574800031 |
| 出版者 | WILEY-V C H VERLAG GMBH |
| 源URL | [http://ir.iccas.ac.cn/handle/121111/50739]  |
| 专题 | 中国科学院化学研究所 |
| 通讯作者 | He, Yan-Mei |
| 作者单位 | 1.Chinese Acad Sci, Inst Chem, Beijing Natl Lab Mol Sci, Beijing 100190, Peoples R China 2.Chinese Acad Sci, Inst Chem, CAS Key Lab Mol Recognit & Funct, Beijing 100190, Peoples R China 3.Chinese Acad Sci, Inst Chem, CAS Key Lab Engn Plast, Beijing 100190, Peoples R China |
| 推荐引用方式 GB/T 7714 | Feng, Yu,Liu, Zhi-Xiong,Chen, Hui,et al. A Systematic Study of Peripherally Multiple Aromatic Ester-Functionalized Poly(benzyl ether) Dendrons for the Fabrication of Organogels: Structure-Property Relationships and Thixotropic Property[J]. CHEMISTRY-A EUROPEAN JOURNAL,2014,20(23):7069-7082. |
| APA | Feng, Yu.,Liu, Zhi-Xiong.,Chen, Hui.,Yan, Zhi-Chao.,He, Yan-Mei.,...&Fan, Qing-Hua.(2014).A Systematic Study of Peripherally Multiple Aromatic Ester-Functionalized Poly(benzyl ether) Dendrons for the Fabrication of Organogels: Structure-Property Relationships and Thixotropic Property.CHEMISTRY-A EUROPEAN JOURNAL,20(23),7069-7082. |
| MLA | Feng, Yu,et al."A Systematic Study of Peripherally Multiple Aromatic Ester-Functionalized Poly(benzyl ether) Dendrons for the Fabrication of Organogels: Structure-Property Relationships and Thixotropic Property".CHEMISTRY-A EUROPEAN JOURNAL 20.23(2014):7069-7082. |
入库方式： OAI收割
来源：化学研究所
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