Zipper and layer-by-layer assemblies of artificial photosystems analyzed by combining optical and piezoelectric surface techniques

Quartz crystal microbalance (QCM) and surface plasmon resonance (SPR) were used to study zipper and layer-by-layer multilayer assemblies of artificial photosystems based on naphthalenediimides (NDIs) attached to an oligophenylethynyl (OPE-NDI) or p-oligophenyl (POP-NDI) backbone in dry and wet state...

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Veröffentlicht in:Langmuir : the ACS journal of surfaces and colloids. - 1985. - 27(2011), 11 vom: 07. Juni, Seite 7213-21
1. Verfasser: Porus, Mariya (VerfasserIn)
Weitere Verfasser: Maroni, Plinio, Bhosale, Rajesh, Sakai, Naomi, Matile, Stefan, Borkovec, Michal
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2011
Zugriff auf das übergeordnete Werk:Langmuir : the ACS journal of surfaces and colloids
Schlagworte:Journal Article
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520 |a Quartz crystal microbalance (QCM) and surface plasmon resonance (SPR) were used to study zipper and layer-by-layer multilayer assemblies of artificial photosystems based on naphthalenediimides (NDIs) attached to an oligophenylethynyl (OPE-NDI) or p-oligophenyl (POP-NDI) backbone in dry and wet state. For the most interesting OPE-NDI zipper, one obtains for the dry film a monolayer thickness of 1.85 nm and a density of 1.58 g/cm(3), while the wet film has a larger monolayer thickness of 3.6 nm with a water content of 36%. The dry thickness of a monolayer in OPE-NDI zippers corresponds to about one-half of the length of the OPE scaffold in agreement with the proposed structure of the zipper. The low water content of the OPE-NDI films confirms their compact structure. The dry monolayer thickness of the POP-NDI films of 1.45 nm is smaller than that for the OPE-NDI films, which is probably related to a tilt of the POP scaffolds within the adsorbed layer. The POP-NDI films swell in water much more substantially, suggesting a much more open structure. These features are in excellent agreement with the better photophysical performance of the OPE-NDI assemblies when compared to the POP-NDI films 
650 4 |a Journal Article 
700 1 |a Maroni, Plinio  |e verfasserin  |4 aut 
700 1 |a Bhosale, Rajesh  |e verfasserin  |4 aut 
700 1 |a Sakai, Naomi  |e verfasserin  |4 aut 
700 1 |a Matile, Stefan  |e verfasserin  |4 aut 
700 1 |a Borkovec, Michal  |e verfasserin  |4 aut 
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