A theoretical investigation on anomalous switching of single-stranded deoxyribonucleic acid(ssDNA) monolayers by water vapor  

作　　者：赵新军 高志福 蒋中英 

机构地区：[1]National Laboratory of Solid State Microstructures and Department of Physics, Nanjing University [2]Xinjiang Astronomical Observatory, Chinese Academy of Sciences

出　　处：《Chinese Physics B》2015年第4期262-268,共7页中国物理B（英文版）

基　　金：Project supported by the National Natural Science Foundation of China(Grant Nos.21264016,11464047,and 21364016);the National Basic Research Program of China(Grant No.2012CB821500);the Natural Science Foundation of Xinjiang Uygur Autonomous Region,China(Grant No.2013211A053)

摘　　要：In this paper, we use a molecular theory to study the anomalous switching of ssDNA monolayers. Here, both ssDNA- water and water-water hydrogen bonds and their explicit coupling to the ssDNA conformations are considered. We find that hydrogen bonding becomes a key element in inducing the anomalous switching of ssDNA monolayers. This finding accords well with the experimental observations. Based on our theoretical model, we predict that the anomalous switching induced by water vapor will be applicable to a wide range of hydrogen bonds polymers, and ssDNA-water hydrogen bonds and water-water hydrogen bonds hybridization will lead to the hydrogen-bond network formation of 3D ssDNA monolayers.In this paper, we use a molecular theory to study the anomalous switching of ssDNA monolayers. Here, both ssDNA- water and water-water hydrogen bonds and their explicit coupling to the ssDNA conformations are considered. We find that hydrogen bonding becomes a key element in inducing the anomalous switching of ssDNA monolayers. This finding accords well with the experimental observations. Based on our theoretical model, we predict that the anomalous switching induced by water vapor will be applicable to a wide range of hydrogen bonds polymers, and ssDNA-water hydrogen bonds and water-water hydrogen bonds hybridization will lead to the hydrogen-bond network formation of 3D ssDNA monolayers.

关 键 词：molecular theory ssDNA monolayers anomalous switching hydrogen bonding 

分 类 号：Q523[生物学—生物化学]