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Issue 45, 2017
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MoS2 nanosheets covalently functionalized with polyacrylonitrile: synthesis and broadband laser protection performance

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Abstract

Highly soluble polyacrylonitrile (PAN)-covalently grafted MoS2 nanosheets (MoS2–PAN) were synthesized in situ through reversible addition fragmentation chain transfer (RAFT) polymerization. In comparison with MoS2 and the MoS2/PAN blends, whether in solution or in a PMMA matrix, the MoS2–PAN-based samples show superior optical limiting response in the visible and near-infrared ranges. After annealing at 200 °C in N2 for 4 hours, the annealed MoS2–PAN/PMMA film exhibits significantly enhanced nonlinear optical and optical limiting responses when compared to the non-annealed MoS2–PAN/PMMA film. The observed nonlinear coefficients of the MoS2–PAN/PMMA film are changed from 1015 cm GW−1 at 532 nm and 534 cm GW−1 at 1064 nm before annealing to 1151 cm GW−1 at 532 nm and 699 cm GW−1 at 1064 nm after annealing. The limiting thresholds were also decreased from 1.98 J cm−1 at 532 nm and 3.60 J cm−1 at 1064 nm before annealing to 1.56 J cm−1 at 532 nm and 2.67 J cm−1 at 1064 nm after annealing.

Graphical abstract: MoS2 nanosheets covalently functionalized with polyacrylonitrile: synthesis and broadband laser protection performance

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Publication details

The article was received on 26 Aug 2017, accepted on 30 Oct 2017 and first published on 31 Oct 2017


Article type: Paper
DOI: 10.1039/C7TC03900J
Citation: J. Mater. Chem. C, 2017,5, 11920-11926
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    MoS2 nanosheets covalently functionalized with polyacrylonitrile: synthesis and broadband laser protection performance

    M. Shi, N. Dong, N. He, Y. Wan, H. Cheng, M. Han, J. Wang and Y. Chen, J. Mater. Chem. C, 2017, 5, 11920
    DOI: 10.1039/C7TC03900J

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