Diffraction Behaviors of New Photopolymers Containing the Dendritic Molecule

Go Woon Kim; Woong Gi Jun; Sang Kyu Lee; Min Ju Cho; Jung-Il Jin; Dong Hoon Choi

Macromolecular Research, Vol.13, No.6, 477-482, December, 2005

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Diffraction Behaviors of New Photopolymers Containing the Dendritic Molecule

Go Woon Kim, Woong Gi Jun, Sang Kyu Lee, Min Ju Cho, Jung-Il Jin, and Dong Hoon Choi^†

Department of Chemistry, Center for Electro- & Photo-responsive Molecules, Korea University, Seoul 136-701, Korea

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Photopolymers are attractive materials for holographic 3-D data storage because of their high photosensitivity and large refractive index modulation. We synthesized the six-armed dendrimer for fabricating the new photopolymer. It was prepared using the initiating mixture of hexaarylbiimidazole (HABI), mercapto-benzoxazole (MOBZ), and 2,6-bis(4-diethylaminobenzylidene)cyclopentanone (DEAW), which is sensitive to 514 nm wavelength. The holographic gratings were fabricated successfully in these photopolymer samples by conventional optical interference method. We investigated the effect of dendrimer, either as a binder or as a plasticizer in the cellulose acetate butyrate (CAB), on the diffraction behavior. The addition of only 1 wt% of dendrimer-I into the CAB significantly increased the diffraction efficiency. The sample doped with dendrimer showed around 80-83% of the diffraction efficiency.

Keywords:photopolymer;dendrimer;holographic grating;diffraction efficiency

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Choi DH, Feng D, Yoon H, Choi SH,, Macromol. Res., 11(1), 36 (2003)
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[Referenced By]

[1] Tork A, Nagtegaele P, Galstian TV, Synth. Met., 127, 81 (2002)

[2] Lessard RA, Manivannan G, Proc. SPIE, 2405, 2 (1995)

[3] Lippert T, David C, Hauer M, Masubuchi T, Masuhara H, Nomura K, Nuyken O, Phipps C, Robert J, Tada T, Tomita K, Wokaun A, Appl. Surf. Sci., 186, 14 (2002)

[4] Pu A, Curtis K, Psaltis D, Opt. Eng., 35, 2824 (1996)

[5] Rhee US, Caulfield HJ, Vikram CS, Shamir J, Appl. Optics, 34, 846 (1995)

[6] Suzuki N, Tomita Y, Kojima T, Appl. Phys. Lett., 81, 4121 (2002)

[7] Ramanujam PS, Hvilsted S, Ujhelyi F, Koppa P, Lorincz E, Erdei G, Szarvas G, Synth. Met., 124, 145 (2001)

[8] Tork A, Nagtegaele P, Galstian TV, Synth. Met., 127, 81 (2002)

[9] Banyasz I, Opt. Commun., 181, 215 (2000)

[10] Choi DH, Feng D, Yoon H, Choi SH,, Macromol. Res., 11(1), 36 (2003)

[11] Dhar L, Schnoes MG, Wsocki TL, Bair H, Schilling M, Boyd C, Appl. Phys. Lett., 73, 269 (1998)

[12] Wang MM, Esener SC, Appl. Optics, 39, 1826 (2000)

[13] Heanue JF, Bashaw MC, Hesselink L, Science, 265(5173), 749 (1994)

[14] Weiss V, Millul E, Appl. Surf. Sci., 106, 293 (1996)

[15] Yao H, Huang M, Chen Z, Hou L, Gan F, Mater. Lett., 56, 3 (2002)

[16] Wooley KL, Hawker CJ, Frechet JMJ, J. Am. Chem. Soc., 113, 4252 (1991)

[17] Hawker CJ, Frechet JMJ, J. Am. Chem. Soc., 112, 7638 (1990)

[18] Haugh ER, U.S.Patents 3,658,526 (1972)

[19] Smothers WK, Monroe BM, Chan DMTH, U.S.Patents 4,959,284 (1988)

[20] Belendez A, Fimia A, Carretero L, Mateos F, Appl. Phys. Lett., 67, 5928 (1999)

[21] Henneberg O, Geue T, Saphiannikova M, Pietsch U, Rochon P, Natansohn A, Appl. Surf. Sci., 182, 272 (2001)

[22] Crivello JV, Dietliker K, Bradley G, Photoinitiators for free radical Cationic and anionic photopolymerization, 2nd ed., John Wiley & Sons, p.261 (1999)