Increased optical nonlinearities of graphene nanohybrids covalently functionalized by axially-coordinated porphyrins

Aijian Wang, Lingliang Long, Wei Zhao, Yinglin Song, Mark G. Humphrey, Marie P. Cifuentes, Xingzhi Wu, Yongsheng Fu, Dongdong Zhang, Xiufen Li, Chi Zhang*

*Corresponding author for this work

    Research output: Contribution to journalArticlepeer-review

    118 Citations (Scopus)

    Abstract

    Two graphene oxide (GO)-based nanohybrid materials possessing covalent linkages to axially-coordinated tetraphenylporphyrin (TPP), GO-TPP, were prepared and were characterized by Fourier transform infrared (FT-IR), Ultraviolet-visible (UV-Vis) absorption, steady state fluorescence, X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), atomic force microscopy (AFM), thermogravimetric analysis (TGA), elemental analysis and Raman spectroscopic techniques. The nonlinear optical properties and optical limiting performance of GO, GO-TPP nanohybrids and the free porphyrins dihydroxotin(IV) tetraphenylporphyrin (SnTPP) and the phosphorus-cored porphyrin (PTPP) were investigated using nanosecond and picosecond Z-scan measurements at 532 nm. At the identical mass concentration of 0.2 mg mL-1, GO-TPP nanohybrids exhibited enhanced nonlinear optical properties and optical limiting performance, ascribed to a combination of nonlinear scattering and/or two-photon absorption with reverse saturable absorption, and the photo-induced electron or energy transfer from the electron-donor porphyrin moiety to the acceptor graphene.

    Original languageEnglish
    Pages (from-to)327-338
    Number of pages12
    JournalCarbon
    Volume53
    DOIs
    Publication statusPublished - Mar 2013

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