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Graphene oxide covalently functionalized with zinc phthalocyanine for broadband optical limiting

2011; Elsevier BV; Volume: 49; Issue: 6 Linguagem: Inglês

10.1016/j.carbon.2011.01.014

1873-3891

Jinhui Zhu, Yongxi Li, Yu Chen, Jun Wang, Bin Zhang, Jinjuan Zhang, Werner J. Blau,

Advanced Fiber Laser Technologies

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 and broadband optical limiting performance than GO at both 532 and 1064 nm, indicating a remarkable accumulation effect as a result of the covalent link between GO and PcZn.