[1] [1] Mathews S J, Chaitanya Kumara S, Giribabu L, et al. Nonlinear optical and optical limiting properties of phthalocyanines in solution and thin films of PMMA at 633 nm studied using a cw laser[J]. Materials Letters, 2007, 61:4426-4431.

          Mathews S J, Chaitanya Kumara S, Giribabu L, et al. Nonlinear optical and optical limiting properties of phthalocyanines in solution and thin films of PMMA at 633 nm studied using a cw laser[J]. Materials Letters, 2007, 61:4426-4431.

[2] [2] Unnikrishnan K P, Thomas J, Nampoori V P N, et al. Third order nonlinear optical studies in europium naphthalocyanine using degenerate four wave mixing and Z-scan[J]. Optical Commun, 2002, 204: 385-390.

          Unnikrishnan K P, Thomas J, Nampoori V P N, et al. Third order nonlinear optical studies in europium naphthalocyanine using degenerate four wave mixing and Z-scan[J]. Optical Commun, 2002, 204: 385-390.

[3] [3] Unnikrishnan K P, Thomas J, Nampoori V P N, et al. Nonlinear absorption in certain metal phthalocyanines at resonant and near resonant wavelengths[J]. Opt Commun, 2003, 217: 269-274.

          Unnikrishnan K P, Thomas J, Nampoori V P N, et al. Nonlinear absorption in certain metal phthalocyanines at resonant and near resonant wavelengths[J]. Opt Commun, 2003, 217: 269-274.

[4] [4] Neher D, Kaltbeitzel A, Wolf A, et al. Chance, Editors. Conjugated polymeric materials: opportunities in electronics, optoelectronics, and molecular electronics[J]. Dordrecht: Kluwer Academic, 1990, 387.

          Neher D, Kaltbeitzel A, Wolf A, et al. Chance, Editors. Conjugated polymeric materials: opportunities in electronics, optoelectronics, and molecular electronics[J]. Dordrecht: Kluwer Academic, 1990, 387.

[5] [5] Hanack M, Schneider T, Barthel M, et al. Indium phthalocyanines and naphthalocyanines for optical limiting[J]. Coord Chem Rev, 2001, 219-221: 235-258.

          Hanack M, Schneider T, Barthel M, et al. Indium phthalocyanines and naphthalocyanines for optical limiting[J]. Coord Chem Rev, 2001, 219-221: 235-258.

[6] [6] Chen Y, Song Y, Qu S. Novel metallo-phthalocyanine with high performances for ns optical limting in solution[J]. Opt Mater, 2001, 18(2): 219-223.

          Chen Y, Song Y, Qu S. Novel metallo-phthalocyanine with high performances for ns optical limting in solution[J]. Opt Mater, 2001, 18(2): 219-223.

[7] [7] Kazuyuki Ishii, Naoko Sakai. Wavelength-tunable excited-state absorption and optical limiting effects in the Q band region based on silicon phthalocyanine oligomers[J]. Phys. Chem Chem Phys, 2010, 12: 15354-15357.

          Kazuyuki Ishii, Naoko Sakai. Wavelength-tunable excited-state absorption and optical limiting effects in the Q band region based on silicon phthalocyanine oligomers[J]. Phys. Chem Chem Phys, 2010, 12: 15354-15357.

[8] [8] Chang Qing, Ye Hongan. Optical limiting properties of naphthalocyanine lead[J]. Acta Optica Sinica, 2004, 24(3): 360-363.

          Chang Qing, Ye Hongan. Optical limiting properties of naphthalocyanine lead[J]. Acta Optica Sinica, 2004, 24(3): 360-363.

[9] [9] Huang Yi, Chen Yongsheng. Functionalization of graphene and their applications[J]. Science in China Series B-Chemistry, 2009, 39(9): 887-896.

          Huang Yi, Chen Yongsheng. Functionalization of graphene and their applications[J]. Science in China Series B-Chemistry, 2009, 39(9): 887-896.

[10] [10] Zhu J H, Li Y X, Chen Y, et al. Graphene oxide covalently functionalized with zinc phthalocyanine for broadband optical limiting[J]. Carbon, 2011, 49: 1900-1905.

          Zhu J H, Li Y X, Chen Y, et al. Graphene oxide covalently functionalized with zinc phthalocyanine for broadband optical limiting[J]. Carbon, 2011, 49: 1900-1905.

[11] [11] Li Y X, Zhu J H, Chen Y, et al. Synthesis and strong optical limiting response of graphite oxide covalently functionalized with gallium phthalocyanine[J]. Nanotechnology, 2011, 22(20): 205704-205711.

          Li Y X, Zhu J H, Chen Y, et al. Synthesis and strong optical limiting response of graphite oxide covalently functionalized with gallium phthalocyanine[J]. Nanotechnology, 2011, 22(20): 205704-205711.

[12] [12] Xu Y F, Liu Z B, Zhang X L, et al. A graphene hybrid material covalently functionalized with porphyrin: Synthesis and Optical Limiting Property[J]. Adv Mater, 2009, 21: 1275-1279.

          Xu Y F, Liu Z B, Zhang X L, et al. A graphene hybrid material covalently functionalized with porphyrin: Synthesis and Optical Limiting Property[J]. Adv Mater, 2009, 21: 1275-1279.

[13] [13] Bala M, Murali Krishna, Venkatramaiah N, et al. Synthesis and structural, spectroscopic and nonlinear optical measurements of graphene oxide and its composites with metal and metal free porphyrins[J]. J Mater Chem, 2012, 22: 3059-3068.

          Bala M, Murali Krishna, Venkatramaiah N, et al. Synthesis and structural, spectroscopic and nonlinear optical measurements of graphene oxide and its composites with metal and metal free porphyrins[J]. J Mater Chem, 2012, 22: 3059-3068.