Nevertheless, the SOMO continues to control the spin distribution. Science, 2011, 332: 218–220, Chen G, Ni M, Peng H, et al. It is the product of the 1-electron reduction of a ketone. The electron density which goes onto carbon from the SOMO is used in part to neutralize the positive charge on carbon, and that which goes onto oxygen further increases the net negative charge on oxygen. Sci China Mater, 2018, 61: 303–352, Fouassier JP, Allonas X, Burget D. Photopolymerization reactions under visible lights: Principle, mechanisms and examples of applications. The application of halomethyl 1,3,5-triazine as a photoinitiator or co-initiator for acrylate monomer polymerization. Nat Photon, 2018, 12: 228–234, Leite IT, Turtaev S, Jiang X, et al. This is not especially surprising in view of the fact that the planar form would be a cyclic, conjugated system consisting of 8 pi electrons. It is especially interesting for a number of reasons. Polymer, 2019, 160: 53–64, Zhao D, Zhou W, Cui X, et al. inhibition function of the ketyl radical, dramatically im-proved holographic polymer/LC composites with a high diffractionefficiency(η=93±4%)areenabled.Dramati-cally depressed phase separation and holographic per-formance (η = 11±4%) are caused when converting the inhibiting ketyl radical to a new initiating radical, in- Scheme 7. Angew Chem Int Ed, 2015, 54: 14462–14467, Zhang J, Xiao P. 3D printing of photopolymers. Scheme 11. Sci China Mater, 2017, 61: 745–751, Bunning TJ, Natarajan LV, Tondiglia VP, et al. Well-structured holographic polymer dispersed liquid crystals by employing acrylamide and doping ZnS nanoparticles. Nat Photon, 2018, 12: 150–153, Tikan A, Bielawski S, Szwaj C, et al. A ketyl group in organic chemistry is an anion radical that contains a group =C-O• in which an oxygen radical is bonded directly to carbon, negatively charged. This interesting result obtains because, in the assumed kind of nonpolar system, the filling of the BMO’s evidently results in Q. . ACS Appl Mater Interfaces, 2017, 9: 1810–1819, Xie XL, Peng HY, Zhou XP, et al. . Electrically switchable light transmittance of epoxy-mercaptan polymer/nematic liquid crystal composites with controllable microstructures. Acta Polym Sin, 2017, 48: 1557–1573, Peng H, Chen G, Ni M, et al. Incidentally, even benzene can be reduced to 1,4-dihydrobenzene in this way. RSC Adv, 2017, 7: 51847–51857, Stoll S, Schweiger A. Easyspin, a comprehensive software package for spectral simulation and analysis in EPR. In the context of the resulting anion radical, this same MO then becomes the SOMO (singly occupied MO of a radical species). When the LUMO is of very high energy, it may be difficult to transfer an electron to the molecule by chemical means (such as an alkali metal) or even by electrochemical means (cathodic reduction). Direct electron spin resonance observations. Monomer functionality effects in the formation of thiol-ene holographic polymer dispersed liquid crystals. He visited the University of Colorado Boulder from 2012 to 2014, sponsored by the CSC. Photopolymerization reactions initiated by a visible light photoinitiating system: Dye/amine/bis(trichloromethyl)-substituted-1,3,5-triazine. Holographic polymer/liquid-crystal composites, which are periodically ordered materials with alternative polymer-rich and liquid-crystal-rich phases, have drawn increasing interest due to their unique capabilities of reconstructing colored three-dimensional (3D) images and enabling the electro-optic response. You have already calculated, as part of the very first problem set in Unit 1, the charge and spin densities in the butadiene anion and cation radicals, so that you can actually verify these things.