Nanophase Separation in Polystyrene-Polyfluorene Block Copolymers Thin Films Prepared through the Breath Figure Procedure
(2009) Langmuir : the A C S journal of surfaces and colloids — Vol. 25, n° 9, p. 5333-5338 (2009)
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- Abstract
- The amphiphilic block copolymer formed by a hydrophobic body of polystyrene and a hydrophilic head of poly[9,9-di(2-(2-tetrahydropyranyl-oxy)hexyl)fluorene-alt-9,9-dioctylfluorene] was synthesized, and its solution was used to create thin films with ordered pattern of holes, by means of the breath figure technique. These porous films, after a thermal treatment, were found to show ordered aggregates of the pi-conjugated blocks in the place of the cavities. This is probably due to a preorganization of the two different blocks of the copolymer occurring during the breath figure formation, which is driven by the condensation of water microdroplets on the polymer solution, and to a following phase segregation occurring during the thermal annealing. This approach is a promising tool to be employed for the organization of organic materials at the micro and nanoscale.
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Citations
Bolognesi, A., Galeotti, F., Giovanella, U., Bertini, F., & Yunus, S. (2009). Nanophase Separation in Polystyrene-Polyfluorene Block Copolymers Thin Films Prepared through the Breath Figure Procedure. Langmuir : the A C S journal of surfaces and colloids, 25(9), 5333-5338. https://doi.org/10.1021/la804139s (Original work published 2009)