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Chem. Chem. Phys.22522017WALLED CARBON NANOTUBES; NONLINEAR ABSORPTION; NANOSHEETS; REDUCTION; PHTHALOCYANINE; COMPOSITES; EFFICIENT; SHEETS; METAL; C-60REORTSOM21795Porphyrin-graphene composites have attracted increasing attention due to a number of intriguing functions, and their photoelectrical and catalytic performances are expected to be modulated through different approaches. In the present study, a designed polymer based on phenyl sulfone, (p-amino)phenylhydroquinone, and a symmetrical dinaphthylporphyrin were covalently attached to a graphene oxide (GO) sheet. The formation of the nanohybrid was characterized by Fourier transform infrared (FTIR), X-ray diffraction (XRD), thermogravimetric analysis (TGA), X-ray photoelectron spectroscopy (XPS), and Raman, ultraviolet-visible (UV-vis) absorption, steady and transient fluorescence spectroscopy techniques. The nonlinear optical and optical limiting performances of the hybrid were investigated using Z-scan measurements at 532 nm and 1064 nm. For comparison, a porphyrin functionalized GO hybrid was synthesized as a reference. At the same linear transmittance, the polymer functionalized GO exhibited a stronger optical limiting response and a larger nonlinear extinction coefficient than the individual GO, porphyrinated polymer, and porphyrin functionalized GO hybrid analogue, and its intrinsic photophysical mechanism was discussed in detail. More importantly, further improvement of its nonlinear optical properties can be achieved by the chemical reduction of the hybrid. The enhanced nonlinear optical performance originated from the effective combination of nonlinear scattering, reverse saturable absorption, and a possible photo-induced electron/energy transfer mechanism from donor porphyrin moieties in the polymer backbone to acceptor graphene. Our result might provide a new avenue for the development of graphene-porphyrin materials in the field of photocatalysis, nonlinear optics, and optoelectronic devices.Covalent functionalization of graphene oxide with porphyrin and porphyrin incorporated polymers for optical limiting期刊论文EnglishDu, Yinlong; Dong, Ningning; Zhang, Menghan; Zhu, Kai; Na, Ruiqi; Zhang, Shuling; Sun, Ningwei; Wang, Guibin; Wang, Jun WOS:000394426400063
外文题目: Covalent functionalization of graphene oxide with porphyrin and porphyrin incorporated polymers for optical limiting
作者: Du, Yinlong; Dong, Ningning; Zhang, Menghan; Zhu, Kai; Na, Ruiqi; Zhang, Shuling; Sun, Ningwei; Wang, Guibin; Wang, Jun
刊名: Phys. Chem. Chem. Phys.
年: 2017 卷: 19 期: 3 页: 2252--2260
英文关键词:

WALLED CARBON NANOTUBES; NONLINEAR ABSORPTION; NANOSHEETS; REDUCTION; PHTHALOCYANINE; COMPOSITES; EFFICIENT; SHEETS; METAL; C-60
英文摘要:
文献类型: 期刊论文
正文语种: English
收录类别: SCI  
DOI: 10.1039/c6cp05920a
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