For faster navigation, this Iframe is preloading the Wikiwand page for 重叠 (化学).

重叠 (化学)

三硝基芴(trinitrofluorene,蓝色)夹在分子镊子(molecular tweezers,红色)中,两者经由芳香性重叠作用结合在一起[1]

重叠(英语:Stacking,又译堆积)在超分子化学中是指芳香性分子的一类排列堆积形式。例如DNA中连续性碱基的堆积系统,或是某些具有两个非极性环的酵素,会以π轨道重叠的方式而堆积在一起。

生物学上的重叠

DNA分子中的π重叠出现在相连的核苷酸之间,可加强分子结构的稳定性。核苷酸中的含氮碱基皆拥有芳香环。在DNA分子中,这些芳香环是以面对面的平行方式排列,使碱基之间得以发生芳香交互作用(aromatic interactions)。在此交互作用中,双键中的π键会与另一个π键重叠。

参见

外部链接

参考资料

  1. ^ A. Petitjean, R. G. Khoury, N. Kyritsakas and J. M. Lehn. Dynamic Devices. Shape Switching and Substrate Binding in Ion-Controlled Nanomechanical Molecular Tweezers. J. Am. Chem. Soc. 2004, 126 (21): 6637–6647. doi:10.1021/ja031915r. 
{{bottomLinkPreText}} {{bottomLinkText}}
重叠 (化学)
Listen to this article

This browser is not supported by Wikiwand :(
Wikiwand requires a browser with modern capabilities in order to provide you with the best reading experience.
Please download and use one of the following browsers:

This article was just edited, click to reload
This article has been deleted on Wikipedia (Why?)

Back to homepage

Please click Add in the dialog above
Please click Allow in the top-left corner,
then click Install Now in the dialog
Please click Open in the download dialog,
then click Install
Please click the "Downloads" icon in the Safari toolbar, open the first download in the list,
then click Install
{{::$root.activation.text}}

Install Wikiwand

Install on Chrome Install on Firefox
Don't forget to rate us

Tell your friends about Wikiwand!

Gmail Facebook Twitter Link

Enjoying Wikiwand?

Tell your friends and spread the love:
Share on Gmail Share on Facebook Share on Twitter Share on Buffer

Our magic isn't perfect

You can help our automatic cover photo selection by reporting an unsuitable photo.

This photo is visually disturbing This photo is not a good choice

Thank you for helping!


Your input will affect cover photo selection, along with input from other users.

X

Get ready for Wikiwand 2.0 🎉! the new version arrives on September 1st! Don't want to wait?