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

Two water-soluble polysilane derivatives were synthesized by the addition reaction of olefine acid with polysilane. After heating at 653 K and acidification, arc-discharged single-walled carbon nanotubes (SWNTs) were ultrasonically dispersed in aqueous solutions of two different polysilane derivativ...

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Bibliographic Details
Published in:Sensors and materials 2019-01, Vol.31 (12), p.4093
Main Authors: Gao, Jinling, Lian, Yongfu, Wen, Chao, Bi, Hongmei
Format: Article
Language:English
Subjects:
Absorption spectra
Acidification
Aqueous solutions
Arc heating
Derivatives
Discharge
Dispersion
Electric arcs
Raman spectra
Single wall carbon nanotubes
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Summary:Two water-soluble polysilane derivatives were synthesized by the addition reaction of olefine acid with polysilane. After heating at 653 K and acidification, arc-discharged single-walled carbon nanotubes (SWNTs) were ultrasonically dispersed in aqueous solutions of two different polysilane derivatives and then subjected to ultracentrifugation to remove these insoluble species. Vis–NIR absorption spectra showed that the two polysilane derivatives have good dispersing ability toward metallic SWNTs (m-SWNTs). Moreover, the longer the side chain of the polysilane derivative, the higher the output of m-SWNTs. In addition, Raman spectra indicated that m-SWNTs with different chiral indexes are selectively dispersed in the two aqueous solutions of polysilane derivatives, indicating that the two polysilane derivatives can selectively identify m-SWNTs.
ISSN:0914-4935
DOI:10.18494/SAM.2019.2446