Preparation, Alignment, and Optical Properties of Soluble Poly(phenylacetylene)-Wrapped Carbon Nanotubes

唐本忠
论文

Preparation, Alignment, and Optical Properties of Soluble Poly(phenylacetylene)-Wrapped Carbon Nanotubes

本忠唐;洪耀徐

Hong Kong University of Science and Technology

发表时间：1999-4-20

期刊：Macromolecules

语言：English

U R L： http://www.scopus.com/inward/record.url?scp=0001190796&partnerID=8YFLogxK

摘要

Carbon nanotube-containing poly(phenylacetylenes) (NT/PPAs) are prepared by in situ polymerizations of phenylacetylene catalyzed by WCl₆e-PK₄Sn and [Rh(nbd)Cl]₂ (nbd = 2,5-norbornadiene) in the presence of the nanotubes. The NT/PPAs are characterized by GPC, NMR, UV, FL, TGA, SEM, TEM, and XRD, and it is found that the nanotubes in the NT/PPAs are helically wrapped by the PPA chains. The short nanotubes thickly wrapped in the PPA chains are soluble in common organic solvents including tetrahydrofuran, toluene, chloroform, and 1,4-dioxane. The NT/PPAs are macroscopically processible, and shearing of the NT/PPA solutions readily aligns the nanotubes along the direction of the applied mechanical force. The nanotubes exhibit a strong photostabilization effect, protecting the PPA chains from photodegradation under harsh laser irradiation with incident fluence as high as 10 J/cm₂. The NT/PPA solutions effectively limit intense optical pulses, with the saturation fluence tunable by varying the nanotube contents.

文献指纹

化合物

Carbon Nanotubes

Nanotubes

Optical properties

2,5-norbornadiene

phenylacetylene

poly(phenylacetylene)

1,4-dioxane

Photodegradation

tetrahydrofuran

Laser beam effects

Organic solvents

Toluene

Laser pulses

Nuclear magnetic resonance

Chloroform

Polymerization

Shearing

Transmission electron microscopy

Scanning electron microscopy

Direction compound

工程与材料科学