The effect of vortex-induced mechanical stresses on the fluorescent properties of dye-containing poly(ethylene glycol)-block-poly(lactic acid) (PEG-b-PLA) block copolymer micelles has been investigated. PEG-b-PLA block copolymer micelles containing fluorescent dyes, 3,3′-dioctadecyloxacarbocyanine perchlorate (DiO) and/or 1,1′-dioctadecyl-3,3,3′,3′-tetramethylindocarbocyanine perchlorate (DiI), are prepared by a simple one-step procedure that involves the self-assembly of block copolymers and spontaneous incorporation of hydrophobic dyes into the core of the micelles. Upon vortexing, the micelle dispersion samples showed a decrease in fluorescence intensity in a rotational speed- and time-dependent manner. The results demonstrated that the vortexing can alter the fluorescent properties of the dye-containing PEG-b-PLA block copolymer micelle dispersion samples, suggesting the potential utility of block copolymer micelles as a mechanical stress-responsive nanomaterial.
T. L. Odom et al., "Effect of Vortex-Induced Physical Stress on Fluorescent Properties of Dye-Containing Poly(Ethylene Glycol)-Block-Poly(Lactic Acid) Micelles," Journal of Applied Polymer Science, vol. 138, no. 4, John Wiley & Sons, Ltd., Jul 2020.
The definitive version is available at https://doi.org/10.1002/app.49743
Center for Research in Energy and Environment (CREE)
Keywords and Phrases
micelles; self-assembly; stimuli-sensitive polymers
International Standard Serial Number (ISSN)
Article - Journal
© 2020 John Wiley & Sons, Ltd. , All rights reserved.
Creative Commons Licensing
This work is licensed under a Creative Commons Attribution 4.0 License.
29 Jul 2020