A fluorescence study on the gel-to-sol transition of κ-carrageenan

Electrospun silk fibroin fiber diameter influences in vitro dermal fibroblast behavior and promotes healing of ex vivo wound models

“…8,11,12,16,26 Cell morphology and focal adhesion formation/spatial organization effect cell signaling. 27 Through this, fiber morphology and arrangement have the potential to considerably alter cell activity and in turn, a biomaterial’s efficacy.…”

Probing slow dynamics by ultrafast process: Sol–gel transition detected by transient absorption spectroscopy of quantum dots

“…It appears that during the sol-gel transition the exciton lifetimes increase, whereas in the gel state this increase becomes rapid. The increase of the lifetimes of probe dye molecules has also been observed during the sol-gel transition in PMMA poly(methyl methacrylate) [17,18]. In order to find the dependence of the exciton lifetimes on the number of the intermolecular bonds, responsible for gel formation, we have performed simultaneous measurements of the optical activity evolution.…”

“…Experimental demonstration of the appropriate power laws and critical exponents is the only way of verifying the proper model. There are a number of papers dealing with the sol-gel transition, in which the universal critical exponents have been determined by various experimental methods, e.g., polarization rotation and rheological measurements [8][9][10][11], viscosity measurements [12], static and dynamic light scattering [6,[13][14][15], fluorescence quenching measurements [6,16], and fast transient fluorescence technique [17,18]. The last two experimental methods have been used for investigation of the sol-gel transition in polymeric systems, where the fluorescence quenching of probe dye molecules attached to polymer chains have been detected.…”

“…The last two experimental methods have been used for investigation of the sol-gel transition in polymeric systems, where the fluorescence quenching of probe dye molecules attached to polymer chains have been detected. In the steady state fluorescence experiment [6,16,17] the authors measured the dye fluorescence yield, whereas in the transient fluorescence technique [18] the dye fluorescence lifetime was measured.…”

Effect of Calcium Ion Concentration on Small Molecule Desorption from Alginate Beads

“…[19] Py has been used as a fluorescent probe for monitoring the gelation of polyacrylamide-sodium alginate composites and sol-gel transition properties of κ-carrageenan. [20,21] The cation effect on the thermal transition of iota carrageenan has been performed by a photon transmission technique, [22] and activation energies were found to be strongly correlated to the CaCl 2 content in the system. The monovalent and divalent cation effects have also been studied as regards the phase transitions of iota carrageenan.…”