The Experts below are selected from a list of 135 Experts worldwide ranked by ideXlab platform
Mohamed M Chehimi - One of the best experts on this subject based on the ideXlab platform.
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Diazonium Salt-Derived 4-(Dimethylamino)phenyl Groups as Hydrogen Donors in Surface-Confined Radical Photopolymerization for Bioactive Poly(2-hydroxyethyl methacrylate) Grafts
2016Co-Authors: Sarra Gam-derouich, Aazdine Lamouri, Catherine Redeuilh, Philippe Decorse, Benjamin Carbonnier, Selim Beyazit, Gorkem Yilmaz, Yusuf Yagci, François Maurel, Mohamed M ChehimiAbstract:In this paper we describe a novel methodology for grafting polymers via radical photopolymerization initiated on gold surfaces by aryl layers from diazonium salt precursors. The parent 4-(dimethylamino)benzenediazonium salt was electroreduced on a gold surface to provide 4-(dimethylamino)phenyl (DMA) hydrogen donor layers; free benzophenone in solution was used as a photosensitizer to strip hydrogen from the grafted DMA. This system permitted efficient surface initiation of photopolymerization of 2-hydroxyethyl methacrylate. The resulting poly(2-hydroxyethyl methacrylate) (PHEMA) grafts were found to be very adherent to the surface as they resist total failure after being soaked in the well-known Paint Stripper methyl ethyl ketone. The PHEMA grafts were reacted with 1,1′-carbonyldiimidazole to yield carbamate groups that are able to react readily with amino groups from proteins. The final surface consisted of protein-functionalized PHEMA grafts where bovine serum albumin (BSA) protein is specifically linked to the grafts by covalent bonds. We used X-ray photoelectron spectroscopy to monitor the chemical changes at the gold surface all along the process from the neat gold to the end-protein-functionalized polymer grafts: the PHEMA graft thickness ranged from 7 to 27 nm, and the activation by 1,1′-carbonyldiimidazole reached 37% of the OH groups, which was sufficient for 90% surface coverage of the grafts by BSA. This work conclusively provides a new approach for bridging reactive and functional polymers to surfaces via aryl diazonium salts in a simple, fast, and efficient approach of importance in biomedical and other applications
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diazonium salt derived 4 dimethylamino phenyl groups as hydrogen donors in surface confined radical photopolymerization for bioactive poly 2 hydroxyethyl methacrylate grafts
Langmuir, 2012Co-Authors: Sarra Gamderouich, Aazdine Lamouri, Catherine Redeuilh, Philippe Decorse, Francois Maurel, Benjamin Carbonnier, Selim Beyazit, Gorkem Yilmaz, Yusuf Yagci, Mohamed M ChehimiAbstract:In this paper we describe a novel methodology for grafting polymers via radical photopolymerization initiated on gold surfaces by aryl layers from diazonium salt precursors. The parent 4-(dimethylamino)benzenediazonium salt was electroreduced on a gold surface to provide 4-(dimethylamino)phenyl (DMA) hydrogen donor layers; free benzophenone in solution was used as a photosensitizer to strip hydrogen from the grafted DMA. This system permitted efficient surface initiation of photopolymerization of 2-hydroxyethyl methacrylate. The resulting poly(2-hydroxyethyl methacrylate) (PHEMA) grafts were found to be very adherent to the surface as they resist total failure after being soaked in the well-known Paint Stripper methyl ethyl ketone. The PHEMA grafts were reacted with 1,1′-carbonyldiimidazole to yield carbamate groups that are able to react readily with amino groups from proteins. The final surface consisted of protein-functionalized PHEMA grafts where bovine serum albumin (BSA) protein is specifically link...
Sarra Gamderouich - One of the best experts on this subject based on the ideXlab platform.
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diazonium salt derived 4 dimethylamino phenyl groups as hydrogen donors in surface confined radical photopolymerization for bioactive poly 2 hydroxyethyl methacrylate grafts
Langmuir, 2012Co-Authors: Sarra Gamderouich, Aazdine Lamouri, Catherine Redeuilh, Philippe Decorse, Francois Maurel, Benjamin Carbonnier, Selim Beyazit, Gorkem Yilmaz, Yusuf Yagci, Mohamed M ChehimiAbstract:In this paper we describe a novel methodology for grafting polymers via radical photopolymerization initiated on gold surfaces by aryl layers from diazonium salt precursors. The parent 4-(dimethylamino)benzenediazonium salt was electroreduced on a gold surface to provide 4-(dimethylamino)phenyl (DMA) hydrogen donor layers; free benzophenone in solution was used as a photosensitizer to strip hydrogen from the grafted DMA. This system permitted efficient surface initiation of photopolymerization of 2-hydroxyethyl methacrylate. The resulting poly(2-hydroxyethyl methacrylate) (PHEMA) grafts were found to be very adherent to the surface as they resist total failure after being soaked in the well-known Paint Stripper methyl ethyl ketone. The PHEMA grafts were reacted with 1,1′-carbonyldiimidazole to yield carbamate groups that are able to react readily with amino groups from proteins. The final surface consisted of protein-functionalized PHEMA grafts where bovine serum albumin (BSA) protein is specifically link...
Yusuf Yagci - One of the best experts on this subject based on the ideXlab platform.
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Diazonium Salt-Derived 4-(Dimethylamino)phenyl Groups as Hydrogen Donors in Surface-Confined Radical Photopolymerization for Bioactive Poly(2-hydroxyethyl methacrylate) Grafts
2016Co-Authors: Sarra Gam-derouich, Aazdine Lamouri, Catherine Redeuilh, Philippe Decorse, Benjamin Carbonnier, Selim Beyazit, Gorkem Yilmaz, Yusuf Yagci, François Maurel, Mohamed M ChehimiAbstract:In this paper we describe a novel methodology for grafting polymers via radical photopolymerization initiated on gold surfaces by aryl layers from diazonium salt precursors. The parent 4-(dimethylamino)benzenediazonium salt was electroreduced on a gold surface to provide 4-(dimethylamino)phenyl (DMA) hydrogen donor layers; free benzophenone in solution was used as a photosensitizer to strip hydrogen from the grafted DMA. This system permitted efficient surface initiation of photopolymerization of 2-hydroxyethyl methacrylate. The resulting poly(2-hydroxyethyl methacrylate) (PHEMA) grafts were found to be very adherent to the surface as they resist total failure after being soaked in the well-known Paint Stripper methyl ethyl ketone. The PHEMA grafts were reacted with 1,1′-carbonyldiimidazole to yield carbamate groups that are able to react readily with amino groups from proteins. The final surface consisted of protein-functionalized PHEMA grafts where bovine serum albumin (BSA) protein is specifically linked to the grafts by covalent bonds. We used X-ray photoelectron spectroscopy to monitor the chemical changes at the gold surface all along the process from the neat gold to the end-protein-functionalized polymer grafts: the PHEMA graft thickness ranged from 7 to 27 nm, and the activation by 1,1′-carbonyldiimidazole reached 37% of the OH groups, which was sufficient for 90% surface coverage of the grafts by BSA. This work conclusively provides a new approach for bridging reactive and functional polymers to surfaces via aryl diazonium salts in a simple, fast, and efficient approach of importance in biomedical and other applications
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diazonium salt derived 4 dimethylamino phenyl groups as hydrogen donors in surface confined radical photopolymerization for bioactive poly 2 hydroxyethyl methacrylate grafts
Langmuir, 2012Co-Authors: Sarra Gamderouich, Aazdine Lamouri, Catherine Redeuilh, Philippe Decorse, Francois Maurel, Benjamin Carbonnier, Selim Beyazit, Gorkem Yilmaz, Yusuf Yagci, Mohamed M ChehimiAbstract:In this paper we describe a novel methodology for grafting polymers via radical photopolymerization initiated on gold surfaces by aryl layers from diazonium salt precursors. The parent 4-(dimethylamino)benzenediazonium salt was electroreduced on a gold surface to provide 4-(dimethylamino)phenyl (DMA) hydrogen donor layers; free benzophenone in solution was used as a photosensitizer to strip hydrogen from the grafted DMA. This system permitted efficient surface initiation of photopolymerization of 2-hydroxyethyl methacrylate. The resulting poly(2-hydroxyethyl methacrylate) (PHEMA) grafts were found to be very adherent to the surface as they resist total failure after being soaked in the well-known Paint Stripper methyl ethyl ketone. The PHEMA grafts were reacted with 1,1′-carbonyldiimidazole to yield carbamate groups that are able to react readily with amino groups from proteins. The final surface consisted of protein-functionalized PHEMA grafts where bovine serum albumin (BSA) protein is specifically link...
Gorkem Yilmaz - One of the best experts on this subject based on the ideXlab platform.
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Diazonium Salt-Derived 4-(Dimethylamino)phenyl Groups as Hydrogen Donors in Surface-Confined Radical Photopolymerization for Bioactive Poly(2-hydroxyethyl methacrylate) Grafts
2016Co-Authors: Sarra Gam-derouich, Aazdine Lamouri, Catherine Redeuilh, Philippe Decorse, Benjamin Carbonnier, Selim Beyazit, Gorkem Yilmaz, Yusuf Yagci, François Maurel, Mohamed M ChehimiAbstract:In this paper we describe a novel methodology for grafting polymers via radical photopolymerization initiated on gold surfaces by aryl layers from diazonium salt precursors. The parent 4-(dimethylamino)benzenediazonium salt was electroreduced on a gold surface to provide 4-(dimethylamino)phenyl (DMA) hydrogen donor layers; free benzophenone in solution was used as a photosensitizer to strip hydrogen from the grafted DMA. This system permitted efficient surface initiation of photopolymerization of 2-hydroxyethyl methacrylate. The resulting poly(2-hydroxyethyl methacrylate) (PHEMA) grafts were found to be very adherent to the surface as they resist total failure after being soaked in the well-known Paint Stripper methyl ethyl ketone. The PHEMA grafts were reacted with 1,1′-carbonyldiimidazole to yield carbamate groups that are able to react readily with amino groups from proteins. The final surface consisted of protein-functionalized PHEMA grafts where bovine serum albumin (BSA) protein is specifically linked to the grafts by covalent bonds. We used X-ray photoelectron spectroscopy to monitor the chemical changes at the gold surface all along the process from the neat gold to the end-protein-functionalized polymer grafts: the PHEMA graft thickness ranged from 7 to 27 nm, and the activation by 1,1′-carbonyldiimidazole reached 37% of the OH groups, which was sufficient for 90% surface coverage of the grafts by BSA. This work conclusively provides a new approach for bridging reactive and functional polymers to surfaces via aryl diazonium salts in a simple, fast, and efficient approach of importance in biomedical and other applications
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diazonium salt derived 4 dimethylamino phenyl groups as hydrogen donors in surface confined radical photopolymerization for bioactive poly 2 hydroxyethyl methacrylate grafts
Langmuir, 2012Co-Authors: Sarra Gamderouich, Aazdine Lamouri, Catherine Redeuilh, Philippe Decorse, Francois Maurel, Benjamin Carbonnier, Selim Beyazit, Gorkem Yilmaz, Yusuf Yagci, Mohamed M ChehimiAbstract:In this paper we describe a novel methodology for grafting polymers via radical photopolymerization initiated on gold surfaces by aryl layers from diazonium salt precursors. The parent 4-(dimethylamino)benzenediazonium salt was electroreduced on a gold surface to provide 4-(dimethylamino)phenyl (DMA) hydrogen donor layers; free benzophenone in solution was used as a photosensitizer to strip hydrogen from the grafted DMA. This system permitted efficient surface initiation of photopolymerization of 2-hydroxyethyl methacrylate. The resulting poly(2-hydroxyethyl methacrylate) (PHEMA) grafts were found to be very adherent to the surface as they resist total failure after being soaked in the well-known Paint Stripper methyl ethyl ketone. The PHEMA grafts were reacted with 1,1′-carbonyldiimidazole to yield carbamate groups that are able to react readily with amino groups from proteins. The final surface consisted of protein-functionalized PHEMA grafts where bovine serum albumin (BSA) protein is specifically link...
Aazdine Lamouri - One of the best experts on this subject based on the ideXlab platform.
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Diazonium Salt-Derived 4-(Dimethylamino)phenyl Groups as Hydrogen Donors in Surface-Confined Radical Photopolymerization for Bioactive Poly(2-hydroxyethyl methacrylate) Grafts
2016Co-Authors: Sarra Gam-derouich, Aazdine Lamouri, Catherine Redeuilh, Philippe Decorse, Benjamin Carbonnier, Selim Beyazit, Gorkem Yilmaz, Yusuf Yagci, François Maurel, Mohamed M ChehimiAbstract:In this paper we describe a novel methodology for grafting polymers via radical photopolymerization initiated on gold surfaces by aryl layers from diazonium salt precursors. The parent 4-(dimethylamino)benzenediazonium salt was electroreduced on a gold surface to provide 4-(dimethylamino)phenyl (DMA) hydrogen donor layers; free benzophenone in solution was used as a photosensitizer to strip hydrogen from the grafted DMA. This system permitted efficient surface initiation of photopolymerization of 2-hydroxyethyl methacrylate. The resulting poly(2-hydroxyethyl methacrylate) (PHEMA) grafts were found to be very adherent to the surface as they resist total failure after being soaked in the well-known Paint Stripper methyl ethyl ketone. The PHEMA grafts were reacted with 1,1′-carbonyldiimidazole to yield carbamate groups that are able to react readily with amino groups from proteins. The final surface consisted of protein-functionalized PHEMA grafts where bovine serum albumin (BSA) protein is specifically linked to the grafts by covalent bonds. We used X-ray photoelectron spectroscopy to monitor the chemical changes at the gold surface all along the process from the neat gold to the end-protein-functionalized polymer grafts: the PHEMA graft thickness ranged from 7 to 27 nm, and the activation by 1,1′-carbonyldiimidazole reached 37% of the OH groups, which was sufficient for 90% surface coverage of the grafts by BSA. This work conclusively provides a new approach for bridging reactive and functional polymers to surfaces via aryl diazonium salts in a simple, fast, and efficient approach of importance in biomedical and other applications
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diazonium salt derived 4 dimethylamino phenyl groups as hydrogen donors in surface confined radical photopolymerization for bioactive poly 2 hydroxyethyl methacrylate grafts
Langmuir, 2012Co-Authors: Sarra Gamderouich, Aazdine Lamouri, Catherine Redeuilh, Philippe Decorse, Francois Maurel, Benjamin Carbonnier, Selim Beyazit, Gorkem Yilmaz, Yusuf Yagci, Mohamed M ChehimiAbstract:In this paper we describe a novel methodology for grafting polymers via radical photopolymerization initiated on gold surfaces by aryl layers from diazonium salt precursors. The parent 4-(dimethylamino)benzenediazonium salt was electroreduced on a gold surface to provide 4-(dimethylamino)phenyl (DMA) hydrogen donor layers; free benzophenone in solution was used as a photosensitizer to strip hydrogen from the grafted DMA. This system permitted efficient surface initiation of photopolymerization of 2-hydroxyethyl methacrylate. The resulting poly(2-hydroxyethyl methacrylate) (PHEMA) grafts were found to be very adherent to the surface as they resist total failure after being soaked in the well-known Paint Stripper methyl ethyl ketone. The PHEMA grafts were reacted with 1,1′-carbonyldiimidazole to yield carbamate groups that are able to react readily with amino groups from proteins. The final surface consisted of protein-functionalized PHEMA grafts where bovine serum albumin (BSA) protein is specifically link...
