Controlled Release of Guest Molecules from Mesoporous Silica Particles Based on a pH-Responsive Polypseudorotaxane Motif

Authors

  • Chiyoung Park,

    1. Department of Polymer Science and Engineering, Hyperstructured Organic Materials Research Center, Inha University, Incheon 402-751, South Korea, Fax: (+82) 32-865-5178
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  • Kyoungho Oh,

    1. Department of Polymer Science and Engineering, Hyperstructured Organic Materials Research Center, Inha University, Incheon 402-751, South Korea, Fax: (+82) 32-865-5178
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  • Sang Cheon Lee Dr.,

    1. Nanomaterials Application Division, Korea Institute of Ceramic Engineering and Technology, Seoul 153-801, South Korea
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  • Chulhee Kim Prof.

    1. Department of Polymer Science and Engineering, Hyperstructured Organic Materials Research Center, Inha University, Incheon 402-751, South Korea, Fax: (+82) 32-865-5178
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  • This work was supported by the Korea Research Foundation (KRF-2005-041-D00238). C.K. also thanks the HOMRC for support.

Abstract

original image

Aufgefädelt: Die Poren eines mesoporösen Siliciumoxidpartikels wurden mit Gastmolekülen gefüllt und anschließend durch das Auffädeln von Cyclodextrinmolekülen (CDs) bei pH 11 auf an der Oberfläche fixierte Polyethylenimin(PEI)-Ketten blockiert. Bei pH 5.5 wurden die Gastmoleküle aus den Partikelporen durch reversibles Abfädeln der CDs von der PEI-Kette freigesetzt.

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