Novel carbazole phenoxy-based methacrylates to produce high-refractive index polymers

Second harmonic generation in SiO2 sol–gel films functionalized with Ethyl-[4-(4-nitro-phenylazo)-phenyl]-(2-oxiranylmethoxy-ethyl)-amine (ENPMA) molecules

“…It is consistent with the fact that, as can be seen in Fig. 6, before poling the refractive indices are higher than those measured after poling, because the carbazole moieties tend to increase the index of refraction in some materials [21].…”

Viscosity and refractive index tailored methacrylate‐based polymers

“…First, the methacrylate monomer can be modified containing e.g. an aromatic carbazole‐phenoxy moiety . Depending on the amount of the modified monomer in a PMMA‐based copolymer a significant increase of the refractive index was measured.…”

“…Depending on the amount of the modified monomer in a PMMA‐based copolymer a significant increase of the refractive index was measured. A copolymer containing 50 mol % of the modified methacrylate possesses a refractive index of 1.5876(@633 nm), the pure homopolymer shows a n ‐value of 1.6306(@633nm) . The synthetic effort of the modified monomer syntheses is quite high and hinders a widespread use.…”

“…In addition, polymers for special applications, e.g., polymer solar cells or OLEDs, have been developed in the past; refractive indices more than 1.7 in the visible could be reached. Most of these polymers suffer from either huge synthetic effort or resulting high costs or a hindered processability using established shaping or replication methods.…”

Methacrylic Polymers Containing Optically Active Side‐Chain Carbazole: Synthesis, Characterization and Photoconductive Properties

“…[22,[31][32][33] In particular, poly[(S)-(À)-MECP] exhibits a higher T g value than poly[(S)-(þ)-MECSI], indicative of a remarkable presence of strong inter-and/or intramolecular dipolar interactions in the solid state between side-chain aromatic , resulted also very high, with onset decomposition temperature (T d ) of 330 and 349 8C, respectively, much higher than those reported for PVK (227 8C), [34] deeply investigated as polymeric material for photorefractive applications, [1] and for other methacrylic carbazolecontaining polymers. [31,35] Again, the higher T d value for poly[(S)-(À)-MECP] can be attributed to increased interand/or intramolecular polar interactions between the neighboring side-chain moieties.…”