Patterning surfaces with polymer patterns

Patterning Surfaces with Polymer Brushes by SECM.195... 

This section details the uses of patterning strategies, more particularly SECM based, in the context of the controlled growth of polymer brushes. First, a controlled polymerization reaction is used to get insight into the chemical reactivity of organic interfaces. For this purpose the ATRP-controlled polymerization is used to chemically amplify the reactivity of molecular moieties immobilized on a surface. Then, a second part explores the SECM strategies proposed to pattern surfaces with polymer brushes. 

Natoe of the subsUates and initiator (mono- to macromolecular from top to bottom of the ist) ayers used, as in Figure 8.14, for the SECM patterning of surfaces with polymer brushes. 

Julthongpiput D, Zhang W, Douglas JF, Karim A, Fasolka MJ (2007) Pattern-directed to isotropic dewetting transition in polymer films on micropattemed surfaces with differential surface energy contrast. Soft Matter 3 613-618... 

Photoswitchable antigen/antibody (substrate/ receptor) complexes 1. Reversible immunosensors 2. Patterning of surfaces with biomaterials using antigen/antibody-biomaterial conjugates (Design of biosensor arrays, biochips) 1. Immobilization of systems on electronic transducers (electrodes, piezoelectric crystals, FET) or the assembly of biomaterials on inert supports by non-covalent interactions (eg. glass, polymers)... 

Thermally responsive polymers, such as poly( V-isopropyl acrylamide) (NI-PAm), have also been studied extensively for applications related to those previously discussed [112], De las Heras et al. described the synthesis and patterning of NIPAm brushes on SAMs and their subsequent performance during temperature-dependent adhesion assays of BSA and Streptococcus mutans (Fig. 7). The authors employed p.CP to pattern features of hydrophobic hexadecanethiol and backfilled the surface with an initiator-functionalized alkanethiol. Polymer brushes were grown via surface-initiated atom transfer radical polymerization (ATRP). FITC-BSA was then... 

This chapter has provided some examples of the ways in which conjugated polymers can be prepared. While the account is not of course exhaustive, and indeed many extremely important synthetic routes have not been included, such as the formation of polyacetylene by the Durham route,it does serve to illustrate that the range of synthetic techniques vary from the simple to the extremely sophisticated. Electrochemical synthesis is largely in the former classihcation, however, it does have considerable potential in the design of materials for molecular electronics since it will allow patterns to be formed on the electrode surface. With the continuing demand for new materials both for electronic and power distribution needs, it is to be expected that this area will continue to develop in the foreseeable future. 

Nano-scale polymer patterning was reported to be fabricated by the enzymatic oxidative polymerization of caffeic acid on 4-aminothiolphenol-functionalized gold surface with dip-pen nanolithography technique [74],... 

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