pH-Triggered softening of crosslinked hydrogen-bonded capsules

Polymeric thin shells: Measurement of elastic properties at the nanometer scale using atomic force microscopy

“…Recently, fd curves have started to be used in combination with advanced optical microscopy methods to nanocompress micrometer-scale thin-shell structures such as cells [10] and polyelectrolyte multilayer microcapsules [11][12][13][14]. The nanocompression was executed by approaching the interrogated microstructure with a large-diameter (∼40 m) glass sphere glued at one side of a tipless AFM cantilever.…”

Cellulose Nanocrystal Microcapsules as Tunable Cages for Nano- and Microparticles

“…Controlled release work for 50 and 100 nm particles and is not efficient for 30 nm particles, probably, because of large size of open pores. For instance, PS beads with a diameter of 50 nm were unable to permeate the PEI-(CNC)12 shells at pH 5.5 (…”

Immersive Polymer Assembly on Immobilized Particles for Automated Capsule Preparation

“…These pores have historically been conducive to the separation of biomolecules utilizing an electric current, but they also allow for polymers and other materials to passively diffuse through the gel without significant caking. [ 13 ] Furthermore, agarose is compatible with many buffers and stable over a wide pH range (2)(3)(4)(5)(6)(7)(8)(9)(10)(11)(12)(13)(14). [ 13a,c ] Because LbL-capsules are of biomedical interest, it is important to note that agarose is biologically compatible, commonly used in medical research, [ 14 ] and acts as an edible framework for many Asian desserts.…”

“…Layer-by-layer (LbL)-engineered particles and capsules [ 1 ] represent a particular class of materials that have received widespread interest, [ 2 ] as they can be prepared with different sizes, [2][3][4] shapes, [ 4 ] and mechanical strengths. [ 5 ] These particles and capsules have also been examined for application in drug and vaccine delivery because they can be engineered to exhibit stealth, [ 6 ] targeting, [ 7 ] and stimuli-responsive properties.…”