We present a simple one-step process to simultaneously create patterned and amine functionalized biocompatible conducting polymer nanostructures, using grafting reactions between oxidative chemical vapor deposition (oCVD) PEDOT conducting polymers and amine functionalized polystyrene (PS) colloidal templates. The functionality of the colloidal template is directly transferred to the surface of the grafted PEDOT, which is patterned as nanobowls, while preserving the advantageous electrical properties of the bulk conducting polymer. This surface functionality affords the ability to couple bioactive molecules or sensing elements for various applications, which we demonstrate by immobilizing fluorescent ligands onto the PEDOT nanopatterns. Nanoscale substructure is introduced into the patterned oCVD layer by replacing the FeCl3 oxidizing agent with CuCl2.
"An SEM image of poly(butylacrylate) grafted functional 'nanobowls', fabricated using 1 µm diameter spheres, after the colloid template had been removed, is reported in figure 4(b). Colloidal patterning of oCVD electrically conducting polymers has also been demonstrated . Chen et al  also combined CVD with nanolithography: they demonstrated that depositing a coating by CVD containing active functional groups, it is possible to nanostructure a broad range of different substrates by nanolithography. "
[Show abstract][Hide abstract] ABSTRACT: Polymers with their tunable functionalities offer the ability to rationally design micro- and nano-engineered materials. Their synthesis as thin films have significant advantages due to the reduced amounts of materials used, faster processing times and the ability to modify the surface while preserving the structural properties of the bulk. Furthermore, their low cost, ease of fabrication and the ability to be easily integrated into processing lines, make them attractive alternatives to their inorganic thin film counterparts. Chemical vapor deposition (CVD) as a polymer thin-film deposition technique offers a versatile platform for fabrication of a wide range of polymer thin films preserving all the functionalities. Solventless, vapor-phase deposition enable the integration of polymer thin films or nanostructures into micro- and nanodevices for improved performance. In this review, CVD of functional polymer thin films and the polymerization mechanisms are introduced. The properties of the polymer thin films that determine their behavior are discussed and their technological advances and applications are reviewed.
Reports on Progress in Physics 07/2012; 75(1):016501. DOI:10.1088/0034-4885/75/1/016501 · 17.06 Impact Factor
[Show abstract][Hide abstract] ABSTRACT: In recent years, interfacial properties have been tailored with nanostructured polymer assemblies to generate materials with specific properties and functions for application in diverse fields, including biomaterials, drug delivery, catalysis, sensing, optics and corrosion. This perspective begins with a brief introduction of the assembly techniques that are commonly employed for the synthesis of nanostructured polymer materials, followed by discussions on how the interfaces influence the properties and thus the functionalities of the polymer materials prepared. Applications of the interfacial polymer nanostructures, particularly for the immobilization and encapsulation of cargo, are then reviewed, focusing on stimuli-responsive cargo release from the polymer nanostructured assemblies for controlled delivery applications. Finally, future research directions in these areas are briefly discussed.
[Show abstract][Hide abstract] ABSTRACT: Double "click": Two different molecules can be sequentially immobilized on defined areas of the same surface by utilizing the different reactivity of activated and non-activated alkynyl groups (see picture). The reactions were carried out at room temperature in water, with the first immobilization step being catalyst-free and the second step requiring Cu I as a catalyst.
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