Diffusion of Mesoscopic Probes in Aqueous Polymer Solutions Measured by Fluorescence Recovery after Photobleaching
β Scribed by Cheng, Yu; Prud'homme, Robert K.; Thomas, James L.
- Book ID
- 119953789
- Publisher
- American Chemical Society
- Year
- 2002
- Tongue
- English
- Weight
- 309 KB
- Volume
- 35
- Category
- Article
- ISSN
- 0024-9297
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## Abstract The surface forces apparatus has been combined with fluorescence recovery after photobleaching to measure translational diffusion of polymer confined between mica sheets. This article presents findings using polydimethylsiloxane with numberβaverage molecular weight __M__~n~ = 2200 g mol
Diffusion coefficients of polyamidoamine cascade polymers (PAMAMs) were measured in aqueous solutions by dynamic light scattering and, after labeling with fluorescein isothiocyanate, by fluorescence photobleaching recovery. The dynamic light scattering results depended weakly on pH at a high salt co