Dispersion of Metallic Arc-discharged Single-walled Carbon Nanotubes by Two Polysilane Derivatives

Jinling Gao,Yongfu Lian,Hongmei Bi,Chao Wen

doi:10.18494/sam.2019.2446

Abstract

Dispersion of Metallic Arc-discharged Single-walled Carbon Nanotubes by Two Polysilane Derivatives

Highlights

Owing to the poor solubility of single-walled carbon nanotubes (SWNTs) and the existence of Van der Waals force between the SWNTs bundles, SWNTs are prone to aggregation
SWNTs were reported to be dispersed by poly(4-vinylpyridine) and to form composites, a glucose sensor was fabricated on the basis of these composites, and glucose was recognized within 3 s by the sensor.[6]. SWNTs wrapped with PEDOT derivatives have been used to design a sensor for chemical warfare agents.[7]. Yoon et al[8] reported that a precursor copolymer, P(4VP-VBAz), can disperse SWNTs in organic solvents, a surface-immobilized CO2 sensor based on P(4VP-VBAz)-SWNT composites that showed high conductivity was developed
It was reported that polyfluorene-phenyl materials containing an electron-withdrawing side group can selectively disperse semiconductor SWNTs (s-SWNTs), whereas polyfluorene-phenyl materials containing an electron donor side group can selectively disperse metallic SWNTs (m-SWNTs).(9) A very large number of s-SWNTs can be dispersed by an amphiphilic fluorenealt-pyridine conjugated copolymer with hydrophilic side chains; this dispersing solution was stable and suitable for transistor sensors.[10]. Naito et al[11] reported that CoMoCAT SWNTs can be dispersed by PMPS and PDHS, which have good flexibility, in an organic solvent, but PDBS with poor flexibility did not show dispersibility

Summary

Introduction

Owing to the poor solubility of single-walled carbon nanotubes (SWNTs) and the existence of Van der Waals force between the SWNTs bundles, SWNTs are prone to aggregation. This restricts the promising applications of SWNTs in biomedicine, electrochemical biosensors, and chemical sensors.[1] it is very important to obtain highly dispersed SWNTs. Usually, solubilizers are used to increase the solubility of SWNTs in a solvent.[2] If a solubilizer can recognize the electronic properties or structural characteristics of SWNTs, the selective dispersion of SWNTs can be achieved.[3] At present, the reported solubilizers include surfactants, ionic liquids, biomacromolecules, and polymers.[4]. The dispersal of SWNTs is important for sensing applications

Methods

Results

Conclusion