Reactive surface coatings based on polysilsesquioxanes : controlled functionalization for specific protein immobilization

The key designing in reliable biosensors is the preparation of thin films in which biomolecular functions may be immobilized and addressed in a controlled and reproducible manner. This requires the controlled preparation of specific binding sites on planar surfaces. Poly(methylsilsesquioxane)-poly(p...

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Veröffentlicht in:Langmuir : the ACS journal of surfaces and colloids. - 1992. - 25(2009), 17 vom: 01. Sept., Seite 10068-76
1. Verfasser: Kessler, Daniel (VerfasserIn)
Weitere Verfasser: Roth, Peter J, Theato, Patrick
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2009
Zugriff auf das übergeordnete Werk:Langmuir : the ACS journal of surfaces and colloids
Schlagworte:Journal Article Research Support, Non-U.S. Gov't Amides Furans Organosilicon Compounds Polycarboxylate Cement Polymers Proteins Quaternary Ammonium Compounds polycarbonate mehr... 25766-59-0 3-(trimethoxysilyl)propyldimethyloctadecylammonium 27668-52-6 tetrahydrofuran 3N8FZZ6PY4 polymethylsilsesquioxane 59Z907ZB69 Biotin 6SO6U10H04 Polytetrafluoroethylene 9002-84-0
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245 1 0 |a Reactive surface coatings based on polysilsesquioxanes  |b controlled functionalization for specific protein immobilization 
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520 |a The key designing in reliable biosensors is the preparation of thin films in which biomolecular functions may be immobilized and addressed in a controlled and reproducible manner. This requires the controlled preparation of specific binding sites on planar surfaces. Poly(methylsilsesquioxane)-poly(pentafluorophenyl acrylates) (PMSSQ-PFPA) are promising materials to produce stable and adherent thin reactive coatings on various substrates. Those reactive surface coatings could be applied onto various materials, for example, gold, polycarbonate (PC), poly(tetrafluoroethylene) (PTFE), and glass. By dipping those substrates in a solution of a desired amine, specific binding sites for protein adsorption could be immobilized on the surface. The versatile strategy allowed the attachment of various linkers, for example, biotin, l-thyroxine, and folic acid. The adsorption processes of streptavidin, pre-albumin, and folate-binding protein were monitored using surface plasmon resonance (SPR), Fourier transform infrared (FTIR) spectroscopy, fluorescence spectroscopy, and atomic force microscopy (AFM). The presented protein immobilization strategy, consisting of four steps (a) spin-coating of PMSSQ-PFPA hybrid polymer from tetrahydrofuran (THF) solution, (b) annealing at 130 degrees C for 2 h to induce thermal cross-linking of the PMSSQ part, (c) surface analogues reaction with different amino-functionalized specific binding sites for proteins, and (d) controlled assembly of proteins on the surface, may find various applications in future biosensor design 
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650 4 |a Research Support, Non-U.S. Gov't 
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650 7 |a Proteins  |2 NLM 
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650 7 |a polymethylsilsesquioxane  |2 NLM 
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650 7 |a 6SO6U10H04  |2 NLM 
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700 1 |a Roth, Peter J  |e verfasserin  |4 aut 
700 1 |a Theato, Patrick  |e verfasserin  |4 aut 
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