Block copolymer nanostructures mapped by far-field optics.
basic_science · Level V
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- Record sourced from PubMed, PMID 19449834.
- Also identified by DOI 10.1021/nl901378e.
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Abstract
We demonstrate stimulated emission depletion microscopy using opposing objective lenses to noninvasively reveal the nanoscale morphology of block copolymers in three dimensions with focused light. This is exemplified in a poly(styrene-block-2-vinylpyridine) model system in which contrast is achieved by specifically staining the vinylpyridine phase with a fluorescent dye. We image swelling induced mesopores and other convoluted structures within the bulk of samples, at scales that have so far required electron and scanning probe microscopes.