Stable and selective permeable hydrogel microcapsules for …
2020年8月27日 · We assessed the permeability of the microcapsules with two fluorescent molecules, a labelled peptide (FITC-LPETGE, ~ 1 kDa) and green fluorescent protein (GFP, 30 kDa), by monitoring their diffusion out of the microcapsules by fluorescence microscopy.
Characterization of microcapsules by confocal laser scanning …
2000年1月3日 · Visualization of microcapsules containing a nile red stained oil phase by a light microscopy image (a) and by CLSM using the red fluorescence channel and transmitted light detection (b). The fluorescence signal allows the oil-containing and air-containing microcapsules to be unambiguously distinguished.
Coumarin-modified fluorescent microcapsules and their photo-switchable ...
2017年6月5日 · In this study, we propose one kind of photo-responsive microcapsule based on the coumarin-modified shell. The coumarin group firstly reacts with pentaerythritol on a stoichiometric basis and then etherifies with the polymerizable isocyanate group to …
Suspended bubble microcapsule delivery systems from droplet ...
2023年2月15日 · The fluorescence image of the droplets was obtained by an inverted fluorescence microscope (IX71, Olympus, Japan) equipped with a charge-coupled device camera (DP30BW, Olympus). Using a scanning electronic microscope (SEM, Hitachi S3000N, Japan) to obtain microstructures of bubble microcapsules after freeze-drying.
The purpose of this paper is to fa-bricate uniform microcapsules containing organic sensitive fluorescent nanoparticles and their encapsulation is characterized. The recent technique provides the method to form uniform microcapsules using the self-assembly of a block copolymer dissolved in the organic phase droplet [2,3].
Porous microcapsules encapsulating β cells generated by …
2022年5月6日 · Fluorescein sodium salt fluorescein (NaFI), isothiocyanate-labeled insulin (insulin-FITC) and bovine serum albumin (BSA-FITC) were used to treat the microcapsules to observe the permeability of...
Microcapsules responsive to pH and temperature: synthesis ...
2019年4月11日 · The pH and temperature dependent release behaviour of riboflavin from microcapsules was studied by fluorescence spectrophotometer (Fig. 5). In all cases, general trends of initial higher release efficiency (up to 10 h) at lower pH and higher temperature (Fig. 5b, green curve) were observed.
Cascade Fluorescence Modulation in Photochromic Microcapsules
2024年9月25日 · In microcapsules made from a Pickering emulsion, this terarylene–Nile Red system showed high fatigue resistance to repeated photocyclization and cycloreversion irradiation, giving access to repeated ON/OFF fluorescence photoswitching.
A generalized approach for measuring microcapsule permeability …
2012年12月4日 · Measurement of the permeability of microcapsules with Fluorescence Recovery After Photobleaching (FRAP) enables analysis of individual microcapsules, the study of their batch heterogeneity, and the survey of changes in an individual capsule’s transport properties under different environmental conditions.
Paraffin/poly-styrene (PS) microcapsules are produced by in situ polymerization. In polymerization, the dynamic process of the polymer-rich phase emergence, propagation and shell forming are observed under confocal laser scanning fluorescence microscope (CLSM) and SEM.