两种新型 DNA 碱基替代亚磷酰胺1和2分别基于相对富电子的 1,5-二烷氧基萘 (DAN) 和相对缺电子的 1,4,5,8-萘四甲二亚胺 (NDI),分别被设计、合成并整合到 DNA 寡核苷酸链中。DAN 和 NDI 人工 DNA 碱基以各种顺序排列插入 12 聚体寡核苷酸双链体内部的三碱基对区域内,并用 CD 光谱和 UV 熔解曲线分析进行研究。修饰双链体的 CD 谱表明 B 型 DNA 拓扑结构。熔解曲线分析揭示了 DNA 双链体稳定性的趋势,这与水溶液中 DAN 和 NDI 部分的已知关联以及 NDI 和天然 DNA 碱基对之间已知的有利相互作用相关。这表明 DAN 和 NDI 之间的静电互补性可以驱动 DNA 双链体的稳定性和特异性。在最有利的情况下,发现 DNA 双链体中间的 NDI-DAN-NDI 排列大约与三个 A-T 碱基对一样稳定。
Poly(norbornyl-NDIs) as a potential cathode-active material in rechargeable charge storage devices
作者:Y. Sasada、S. J. Langford、K. Oyaizu、H. Nishide
DOI:10.1039/c6ra06103f
日期:——
pendant-type naphthalenediimide (NDI) polymers bearing a polynorbornene backbone were prepared and their electrochemical properties explored. The NDI-based polymers displayed reversible redox responses in 1 M LiClO4 γ-butyrolactone electrolyte. Polymer 1, bearing a N-methyl group, exhibited remarkable charge-storage capabilities which demonstrated its potential usefulness as an organic cathode-active
Novel Compound and Organic Electronic Device Using the Same
申请人:Fujiyama Takahiro
公开号:US20070219375A1
公开(公告)日:2007-09-20
Disclosed is a novel compound suitable as an electron transporting material for organic electronic devices. Also disclosed is an organic electronic device using such a compound which has higher sensitivity and longer life than conventional organic electronic devices.
Specifically disclosed is a compound having a structure wherein structural units represented by the general formula (1) below are bonded to one another without a linking group,
wherein, in the formula, X
1
to X
4
independently represent an oxygen atom, a sulfur atom or NR
0
(wherein R
0
represents a hydrogen atom, or a substituted or unsubstituted monovalent organic group); Z
0
represents a tetravalent organic group; and * represents a bonding position.