Temperature-triggered shape-transformations in layer-by-layer microtubes. Academic Article

abstract

• One-dimensional layer-by-layer (LbL) nano- and microtubes have been extensively studied for energy and biomedical applications. Here, we report a temperature-triggered transformation in shape for LbL microtubes consisting of poly(allylamine hydrochloride) (PAH) and poly(acrylic acid) (PAA). PAH/PAA microtubes were assembled onto porous sacrificial templates. Released microtubes transform to closed ellipsoids upon heating in water. On the other hand, unreleased microtubes (remaining within the template) exhibit a completely different behavior in which periodic perforations appear, suggestive of Rayleigh instabilities. In both cases, the transformations occurred near and above the glass transition temperature (Tg) of the hydrated PAH/PAA LbL assembly, suggesting that the transformation in shape is tied to the thermal properties of the LbL assembly.

authors

• Lutkenhaus, Jodie

published proceedings

• J Mater Chem B

author list (cited authors)

• Sung, C., Vidyasagar, A., Hearn, K., & Lutkenhaus, J. L.

citation count

• 13

complete list of authors

• Sung, Choonghyun||Vidyasagar, Ajay||Hearn, Katelin||Lutkenhaus, Jodie L

publication date

• April 2014

publisher

• Royal Society of Chemistry (RSC)  Publisher

published in

• Journal of Materials Chemistry B  Journal

keywords

• Rare Diseases

PubMed Central ID

• 32261491

Digital Object Identifier (DOI)

• 10.1039/c4tb00176a

start page

• 2088

end page

• 2092

volume

• 2

issue

• 15

URL

• http%3A%2F%2Fdx.doi.org%2F10.1039%2Fc4tb00176a