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Simultaneous surface functionalization and reduction of graphene oxide (GO) was realized by simple refluxing of GO with octadecylamine (ODA) without the use of any reducing agents. The presence of the long octadecyl chain made the hydrophilic GO hydrophobic, evidenced by the selective dispersion of the ODA-functionalized GO (GO–ODA) in chloroform solvent rather than in water. Interestingly, different...
A soluble graphene oxide (GO) covalently functionalized with zinc phthalocyanine (PcZn), GO–PcZn, was synthesized by an amidation reaction. The formation of an amido bond between PcZn and GO has been confirmed by X-ray photoelectron and Fourier transform infrared spectroscopy. At the same level of linear extinction coefficient, GO–PcZn exhibited much larger nonlinear optical extinction coefficients...
A soluble polyhedral oligomeric silsesquioxane (POSS) functionalized multi-walled carbon nanotube (MWCNT) hybrid material (MWCNT/POSS) was synthesized, in which the POSS content was estimated to be 44wt.%. This material exhibits a remarkable optical limiting performance for nanosecond laser pulses at 532nm. Thermally-induced nonlinear scattering is the primary mechanism for the nonlinear optical response...
Electrical resistance responses of amorphous polymer composites against various organic vapors at low concentrations are investigated by using polymerization-filling fabricated carbon black/poly(butyl methacrylate) (CB/PBMA) system as the model material. The experimental results indicate that the composites have high selectivity to various organic vapors at the same concentration. In addition, the...
Raman spectra were taken with an UV-vis Raman system on two types of multiwalled carbon nanotubes (MWCNTs, CH 4 -based) and MWCNTs (CO-based), grown catalytically with CH 4 and CO as the carbon sources, respectively, and their H 2 -adsorbing systems. The strongest peak at 1580 cm -1 and the second-strongest band at 1416 cm -1 could be attributed to...
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