Synthesis and Optical Properties of Fullerene-Functionalized Polycarbonates

Abstract

Fullerenation of polycarbonate (PC) is achieved by direct reaction of C60 with PC using AlCl3 as catalyst. Stirring a 1,1,2,2-tetrachloroethane solution of C60 and PC in the presence of AlCl3 under nitrogen at 140 °C for 24 h attached C60 to the PC chains, yielding fullerenated PCs (C60-PCs) with a C60 content up to 2.16 wt %. The C60-PCs are soluble in tetrahydrofuran (THF) and chloroform, and IR, UV, and NMR analyses suggest that they possess the molecular structure HxC60(PC)x with x < 1 on the average. The C60-PCs limit strong 532-nm optical pulses more effectively than the parent C60. Light transmission spectra of the C60-PC solutions red-shift with increasing concentration, with their cutoff wavelengths predictably tunable by simply changing their concentrations.

Advanced syntheses and microfabrications of conjugated polymers, C60-containing polymers and carbon nanotubes for optoelectronic applications

“…Technol., 10, 357±420 (1999) tion was given for this particular C 60 -containing polymer owing to its highly crosslinked structure. Using the same catalyst, soluble C 60 -grafted polycarbonates have recently been synthesized, which were demonstrated to limit strong optical pulses at 532 nm more effectively than pure C 60 (see section on`C 60 -Containing Polymers for Photovoltaic and Optical-Limiting Applications') and have novel bathochromic light transmission characteristics [696]. Soluble C 60 grafted polymers have also been prepared through the amine addition [681± 683, 697] of aminopolymers to fullerene double bonds (Scheme 19) [698].…”

Synthesis and light-emitting properties of C60-containing poly(1-phenyl-1-butyne)s

“…We have developed simple polymer reactions with general applicability for directly attaching C 60 to preformed polymers [15,16]. Polyacetylene is a prototypical conjugated polymer, and substituted polyacetylenes have been found to possess interesting material properties such as optical activity and liquid crystallinity [17±20].…”

Synthesis and Functionality of Substituted Polyacetylenes

“…The light transmission spectrum of 19 resembles that of an optical cutoff filter, which redshifts with an increase in its concentration (c) (Figure 1.11b). Its cutoff wavelength (λ c ) changes semilogarithmically with c over a wide spectral range [60], which is possibly due to nanocluster formation. This offers an easy way to make a plastic optical filter, whose λ c can be readily tuned by varying its PA content.…”