Development of nanodomain and fractal morphologies in solvent annealed block copolymer thin films
Data(s) |
2007
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Resumo |
We have systematically studied the thin film morphologies of asymmetric polystyrene-block-poly(ethylene oxide) (PS-b-PEO) diblock copolymer subjected to solvent vapors of varying selectivity for the constituent blocks. Upon a short treatment in neutral or PS-selective vapor, the film exhibited a highly ordered array of hexagonally packed, cylindrical microdomains. In the case of PEO selective vapor annealing, such ordered cylindrical microdomains were not obtained. instead, fractal patterns on the microscale were observed and their growth processes investigated. Furthermore, hierarchical structures could be obtained if the fractal pattern was exposed to neutral or PS selective vapor. |
Identificador | |
Idioma(s) |
英语 |
Fonte |
Peng J;Han YC;Knoll W;Kim DH.Development of nanodomain and fractal morphologies in solvent annealed block copolymer thin films,MACROMOLECULAR RAPID COMMUNICATIONS ,2007 ,28(13):1422-1428 |
Palavras-Chave | #DIBLOCK COPOLYMERS #TRIBLOCK COPOLYMER #VAPOR TREATMENT #PHASE-BEHAVIOR #SURFACE #ORIENTATION #ORDER #NANOSTRUCTURES #PATTERNS #ARRAYS |
Tipo |
期刊论文 |