文献类型：专利

英文题名：Isolating single-chirality single-walled carbon nanotube comprises e.g. adding first polymer and second polymer into double aqueous-phase system, mixing with single-walled carbon nanotube dispersing solution and surfactant and centrifuging

作者：ZHANG M;LI J;HU P;XU H;QIAO Y

机构：[1]UNIV EAST CHINA SCI & TECHNOLOGY

申请号：CN106744816-A

申请日：2016-12-29

公开日：2017-05-31

语种：英文

收录：DERWENT

摘要：NOVELTY - Isolating single-chirality single-walled carbon nanotube comprises e.g. (i) adding first polymer and second polymer into double aqueous-phase system, adding single-walled carbon nanotube dispersing solution, (ii) controlling the separation temperature, adding surfactant, adjusting pH value of the system, then adding salt, mixing, centrifuging and collecting upper and lower two phases, and (iii) adding solution into upper phase or lower-phase, repeating step (ii) for many times until the detection phase without single-walled carbon nanotube, and then stopping to separate. USE - The method is useful for isolating single-chirality single-walled carbon nanotube (claimed). ADVANTAGE - The nanotube has simple operation, low cost, short separation time and high purity. DETAILED DESCRIPTION - Isolating single-chirality single-walled carbon nanotube comprises (i) adding first polymer and second polymer into double-aqueous-phase system, adding 0.5-10% concentration of single-walled carbon nanotube dispersing solution, (ii) controlling the separation temperature, adding surfactant to make single-walled carbon nanotube which is set in the lower phase of the double aqueous-phase system, adjusting pH value of the system to 3-10, then adding salt, maintaining ionic strength of the solution to 0.1-1 mol/kg, mixing, centrifuging and collecting upper and lower two phases, and (iii) taking solution and adding into upper phase or lower-phase formed in the double aqueous-phase system, repeating step (ii) for many times until the detection phase without single-walled carbon nanotube, and then stopping to separate.