Photoinduced refractive index changes of 3-phenyl-coumarin containing polymers for ophthalmic applications

Intramolecular Coumarin-Dimer Containing Polyurethanes: Optical Tuning via Single- and Two-Photon Absorption Processes

“…In the literature, the dimerization reaction was used to lower the refractive index of coumarin-containing acrylic polymers by illumination with UV-A light (λ = 355 nm). As investigated, the maximum refractive index change depends on many structural material properties, for example, the coumarin content or backbone structure. , By varying the coumarin derivative to 3-phenylcoumarin, higher changes up to Δ n = 0.045 are realized based on the bigger aromatic system . These exemplary studies and almost every other one published have in common, that the refractive index is lowered as a result of the cycloaddition.…”

“…41,42 By varying the coumarin derivative to 3phenylcoumarin, higher changes up to Δn = 0.045 are realized based on the bigger aromatic system. 43 These exemplary studies and almost every other one published have in common, that the refractive index is lowered as a result of the cycloaddition. Conversely, illuminating polymers, whose coumarin motifs are completely dimerized, causes an increase in the refractive index.…”

Incorporation of Coumarin-Based Fluorescent Monomers into Co-Oligomeric Molecules

“…Applications involving coumarin based-polymers includes their use as fluorescent sensors for metal ion detection which have been very recently reported showing reasonable sensitivity and selectivity towards Cu(II) [ 8 ] or Hg(II) [ 9 ]. A wide range of other applications focuses on electronic devices [ 10 , 11 , 12 ] or on stimuli-responsive polymers such as photo-, temperature-, or pH-responsive [ 13 , 14 ]. Also the photoreactive coumarin ring anchored into homopolymers or co-polymer containing acrylic and methacrylic moieties allowed the formation of thermo- and photo-responsive polymers through a [2 + 2] cycloaddition [ 15 , 16 ].…”

Poly(ester amides) (PEAs) – Scaffold for tissue engineering applications

“…But the major limitation is their mechanical property. Synthetic polymers 26,27,28,29,30,31,32,33 such as poly(caprolactone) (PCL), poly(lactide), poly(ethylene oxide) (PEO), and poly(vinyl alcohol) (PVA) etc are commonly used for biomedical application including scaffolds for tissue engineering, bioabsorbable surgical sutures, and drug delivery systems 34,35,36,37,38,39,40,41 . These polymers have notable mechanical stability, high compatibility with wide range of solvents, tunable degradation property, and morphology.…”