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学科主题: 物理有机化学
题名: Hydrogen Bonding-Driven Highly Stable Homoduplexes Formed by Benzene/Naphthalene Amide Oligomers
其他题名: 氢键驱动构筑高度稳定的苯和萘酰胺寡聚体同双股结构
作者: Xu YX(徐云详)1; Zhan TG(占田广)1; Zhao X(赵新)1; Li ZT(黎占亭)1
通讯作者: 赵新 ; 黎占亭
刊名: Org. Chem. Front.
发表日期: 2014
DOI: 10.1039/c3qo00032j
卷: 1, 页:73-78
英文摘要: This paper describes the dimerization of aromatic amide oligomers in chloroform. The oligomers were prepared by step-by-step coupling of benzene-m-dicarboxylic acid and naphthalene-2,7-diamine. Triethylene glycol chains were introduced into the 5-position of the benzene rings to provide solubility in organic solvents. 1H NMR investigations revealed that, although shorter oligomers did not exhibit good dimerization ability, longer oligomers with five or more amide units could form stable homoduplexes which were stabilized by intermolecular multiple N–H?OvC hydrogen bonds. The association constants (Ka) of the 3-, 4- and 5-mer oligomers were determined using 1H NMR dilution experiments, while the Ka values of a 5-mer oligomer and a 7-mer oligomer, which were appended with two or one pyrene unit, were also evaluated using fluorescent dilution experiments. The results showed that the stability of the homoduplexes of the aromatic amide oligomers is nearly linearly related to the number of their amide units, and a Ka of 3.0 × 107 M?1 was determined for the 7-mer oligomer.
语种: 英语
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内容类型: 期刊论文
URI标识: http://ir.sioc.ac.cn/handle/331003/39145
Appears in Collections:物理有机化学研究室_期刊论文

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作者单位: 1.中科院上海有机化学研究所
2.复旦大学

Recommended Citation:
Xu YX,Zhan TG,Zhao X,et al. Hydrogen Bonding-Driven Highly Stable Homoduplexes Formed by Benzene/Naphthalene Amide Oligomers[J]. Org. Chem. Front.,2014,1:73-78.
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