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Hydrophobic periodic mesoporous organosilicas for the adsorption of cytochrome c

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Abstract

The adsorption of cytochrome c has been investigated using two different types of hydrophobic periodic mesoporous organosilicas (PMOs) that have been produced under mild reaction conditions using 1,4-bis(triethoxysilyl)benzene (PMO-benzene) and 4,4′-bis(triethoxysilyl)biphenyl (PMO-biphenyl) as the precursors. For comparison studies, the adsorption of cytochrome c has also been investigated using mesoporous SBA-15 as an absorbent. Mesostructured PMOs and SBA-15 have been characterized by small-angle X-ray scattering (SAXS), N2-adsorption/desorption and transmission electron microscope (TEM). The adsorption rates of the hydrophobic PMOs have been compared to that of SBA-15 at both pH 7.0 and pH 9.6. From the adsorption studies, it is found that PMO-biphenyl has more hydrophobicity than PMO-benzene and showed higher adsorption capacity to cytochrome c as compared to PMO-benzene.

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Acknowledgments

This work was supported by the National Research Foundation of Korea (NRF) Grant funded by the Ministry of Education, Science and Technology, Korea (MEST) (Acceleration Research Program (No. 2009-0078791), a grant-in-aid for the WCU Program from the MEST, a grant from the Fundamental R&D program for Core Technology of Materials funded by the Ministry of Knowledge Economy, Korea, the Korea-China Joint Research Center Program of the NRF, and the Brain Korea 21 Project of the MEST. SAXS measurements were done at Pohang Accelerator Laboratory (PAL), Korea.

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Authors and Affiliations

  1. Department of Polymer Science and Engineering, Pusan National University, Busan, 609-735, Korea

    Mina Park, Sung Soo Park, Il Kim & Chang-Sik Ha

  2. Department of Chemical Engineering, Pusan National University, Busan, 609-735, Korea

    M. Selvaraj

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  1. Mina Park
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  2. Sung Soo Park
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  3. M. Selvaraj
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  4. Il Kim
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  5. Chang-Sik Ha
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Correspondence to Chang-Sik Ha.

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Park, M., Park, S.S., Selvaraj, M. et al. Hydrophobic periodic mesoporous organosilicas for the adsorption of cytochrome c . J Porous Mater 18, 217–223 (2011). https://doi.org/10.1007/s10934-010-9373-5

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