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Polyvinylcarbazole (PVK) is a temperature-resistant [2] thermoplastic polymer produced by radical polymerization from the monomer N-vinylcarbazole. It is a photoconductive polymer and thus the basis for photorefractive polymers and organic light-emitting diodes .
Upon exposure to γ-irradiation, N-vinylcarbazole undergoes solid-state polymerisation. [ 5 ] It is produced by the vinylation of carbazole with acetylene in the presence of base.
Piezospectroscopy (also known as photoluminescence piezospectroscopy) is an analytical technique that reveals internal stresses in alumina-containing materials, ...
Photoluminescence (abbreviated as PL) is light emission from any form of matter after the absorption of photons (electromagnetic radiation). [1] It is one of many forms of luminescence (light emission) and is initiated by photoexcitation (i.e. photons that excite electrons to a higher energy level in an atom), hence the prefix photo- . [ 2 ]
Living cationic polymerization is a living polymerization technique involving cationic propagating species. [1] [2] It enables the synthesis of very well defined polymers (low molar mass distribution) and of polymers with unusual architecture such as star polymers and block copolymers and living cationic polymerization is therefore as such of commercial and academic interest.
Photoluminescence excitation (abbreviated PLE) is a specific type of photoluminescence and concerns the interaction between electromagnetic radiation and matter.It is used in spectroscopic measurements where the frequency of the excitation light is varied, and the luminescence is monitored at the typical emission frequency of the material being studied.
In one modification, both steps are rolled into one by carrying out the reaction in acetic acid. [9] In the third step, this compound is oxidized by red lead to carbazole itself. Another classic is the Bucherer carbazole synthesis, which uses a naphthol and an aryl hydrazine. [10] Bucherer carbazole synthesis
List of conductive polymers [1] [2]; Class Abbr. Polymer Typical dopants Peak conductivity Peak emission PA: Polyacetylene: PT: Polythiophene: Iodine, bromine, Trifluoroacetic acid, propionic acid, sulfonic acids