Photo-induced Aggregation of Single-walled Carbon Nanotubes from Dispersion by Using a Photochromic Dispersant

Dipropylheterocoerdianthrone (DPHCD) was found to be a potential photo-reactive dispersant of single-walled carbon nanotubes (SWNTs). DPHCD was able to well disperse SWNTs in chloroform. DPHCD is easily photo-oxidized by the irradiation of visible light to form the endoperoxide with a bent structure...

Full description

Saved in:
Bibliographic Details
Published in:Journal of Photopolymer Science and Technology 2019/06/24, Vol.32(2), pp.271-278
Main Authors: Seki, Yuki, Matsunaga, Kazuki, Ke, Yuting, Takebayashi, Toma, Ninoyu, Masaya, Kakugawa, Keiju, Lee, Vannajan Sanghiran, Takahara, Shigeru
Format: Article
Language:English
Subjects:
Aggregation
Carbon nanotube
Chirality
Chloroform
Dispersants
Dispersion
Endoperoxide
Functional dispersant
Photochromism
Precipitates
Raman spectra
Selectivity
Single wall carbon nanotubes
Singlet oxygen
π-π stacking
Citations: Items that this one cites
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Dipropylheterocoerdianthrone (DPHCD) was found to be a potential photo-reactive dispersant of single-walled carbon nanotubes (SWNTs). DPHCD was able to well disperse SWNTs in chloroform. DPHCD is easily photo-oxidized by the irradiation of visible light to form the endoperoxide with a bent structure under oxygen or air atmosphere. Then, SWNTs were photo-precipitated from the DPHCD/SWNTs dispersion. The precipitation was able to disperse again after the photochromic reaction to turn back DPHCD from the endoperoxide and sonication. Such photo-induced precipitation was also observed in DPHCD/SWNTs complex film. The SWNTs precipitates were analyzed by FT-IR and Raman spectra measurements, and discussed about selectivity of DPHCD on chirality, and elimination of the dispersant.
ISSN:0914-9244
1349-6336
DOI:10.2494/photopolymer.32.271