Carboxyl-modified single-walled carbon nanotubes selectively induce human telomeric i-motif formation.

Effect of Single Walled Carbon Nanotubes on Natural Gas Hydrate Formation

Regulation of Oncogene Expression via Targeting i-Motif in Nucleic Acids

The basic molecules required for sustaining life on earth include carbohydrates, lipids, proteins, and nucleic acids (DNA and RNA). DNA is considered to be the building block of life and can adopt various types of secondary structures. Gehring et al. revealed for the first time that DNA sequences having long cytosine stretch can form unconventional secondary structures called i-Motifs [1]. Thes...

Carboxyl-modified single-walled carbon nanotubes negatively affect bacterial growth and denitrification activity

Single-walled carbon nanotubes (SWNTs) have been used in a wide range of fields, and the surface modification via carboxyl functionalization can further improve their physicochemical properties. However, whether carboxyl-modified SWNT poses potential risks to microbial denitrification after its release into the environment remains unknown. Here we present the possible effects of carboxyl-modifi...

Carbon nanotube scanning tunneling microscopy tips for chemically selective imaging.

Carboxyl-terminated single-walled carbon nanotubes (SWNTs) were successfully immobilized from solution phases onto the apexes of gold tips for scanning tunneling microscopy (STM). Gold STM tips were first modified with self-assembled monolayers of 4-mercaptobenzoic acid, and its carboxyl groups were used to anchor carboxylated SWNTs through Zn2+ ion-bridged coordination. These SWNT tips gave hi...

Radius Dependence of Hydrogen Storage Inside Single Walled Carbon Nanotubes in an Array

In this study, we have investigated radius dependence of hydrogen storage within armchair (n,n) single walled carbon nanotubes (SWCNT) in a square arrays. To this aim, we have employed equilibrium molecular dynamics (MD) simulation. Our simulations results reveal that radius of carbon nanotubes are an important and influent factor in hydrogen distribution inside carbon nanotubes and consequentl...