Hammoud, Fatima; Giacoletto, Nicolas; Nechab, Malek; Graff, Bernadette; Hijazi, Akram; Dumur, Frederic; Lalevee, Jacques published the artcile< 5,12-Dialkyl-5,12-dihydroindolo[3,2-a]carbazole-Based Oxime-Esters for LED Photoinitiating Systems and Application on 3D Printing>, Quality Control of 17082-09-6, the main research area is carbazole ester lead emitting diode potoinitiating tree dimentional printing.
In order to expand the application of oxime-esters (OXEs) and to introduce a one-component photoinitiating system of high performance in visible light photopolymerization, a series of 5,12-dialkyl-5,12-dihydroindolo[3,2-a]carbazole-based oxime-esters with visible light absorption abilities is designed and synthesized. Notably, when irradiated with light-emitting diodes at 405 nm, the proposed structures can undergo a direct cleavage of the NO bond followed by decarboxylation, generating free radicals capable to efficiently initiate free radical photopolymerizations (FRP). Furthermore, the new OXEs showed good thermal initiation abilities and can be used as dual photo and thermal initiators. An interesting structure/reactivity/efficiency relationship can be obtained by comparing the reactivity of the different radicals generated upon photoexcitation at identical chromophore but also by comparing the photoinitiating ability of the hexyl derivatives (1)-(10) with that of Me derivatives (1′)-(10′) characterized by a lower solubility than the previous series in resins. Chem. mechanisms are studied through different techniques including real-time Fourier transform IR spectroscopy, UVvisible absorption spectroscopy, fluorescence (time-resolved or steady-state) as well as mol. modeling calculations To finish, OXEs are incorporated in new photosensitive 3D printing resins, furnishing 3D objects with a remarkable spatial resolution
Macromolecular Materials and Engineering published new progress about Absorption. 17082-09-6 belongs to class chlorides-buliding-blocks, and the molecular formula is C9H7ClO, Quality Control of 17082-09-6.
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Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics