tailieunhanh - Báo cáo hóa học: " Fabrication of Highly Ordered Polymeric Nanodot and Nanowire Arrays Templated by Supramolecular Assembly "

Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành hóa học dành cho các bạn yêu hóa học tham khảo đề tài: Fabrication of Highly Ordered Polymeric Nanodot and Nanowire Arrays Templated by Supramolecular Assembly | Nanoscale Res Lett 2009 4 459-464 DOI S11671-009-9263-4 NANO EXPRESS Fabrication of Highly Ordered Polymeric Nanodot and Nanowire Arrays Templated by Supramolecular Assembly Block Copolymer Nanoporous Thin Films Xikui Liu Manfred Stamm Received 18 October 2008 Accepted 27 January 2009 Published online 19 February 2009 to the authors 2009 Abstract Realizing the vast technological potential of patternable block copolymers requires both the precise controlling of the orientation and long-range ordering which is still a challenging topic so far. Recently we have demonstrated that ordered nanoporous thin film can be fabricated from a simple supramolecular assembly approach. Here we will extend this approach and provide a general route to fabricate large areas of highly ordered polymeric nanodot and nanowire arrays. We revealed that under a mixture solvent annealing atmosphere a neardefect-free nanoporous thin film over large areas can be achieved. Under the direction of interpolymer hydrogen bonding and capillary action of nanopores this ordered porous nanotemplate can be properly filled with phenolic resin precursor followed by curation and pyrolysis at middle temperature to remove the nanotemplate a perfect ordered polymer nanodot arrays replication was obtained. The orientation of the supramolecular assembly thin films can be readily re-aligned parallel to the substrate upon exposure to chloroform vapor so this facile nanotemplate replica method can be further extend to generate large areas of polymeric nanowire arrays. Thus we achieved a successful sub-30 nm patterns nanotemplates transfer X. Liu M. Stamm Department of Nanostructured Materials Leibniz Institute of Polymer Research Dresden Hohe Str. 6 01069 Dresden Germany e-mail xkliu@ liuxikui@ M. Stamm e-mail stamm@ X. Liu College of Polymer Science and Engineering Sichuan University Sichuan 610065 China methodology for fabricating polymeric nanopattern arrays with highly ordered