| Autor: |
Derikov YI; A.V. Topchiev Institute of Petrochemical Synthesis Russian Academy of Sciences, 119991 Moscow, Russia., Belousov DR; A.V. Topchiev Institute of Petrochemical Synthesis Russian Academy of Sciences, 119991 Moscow, Russia.; Faculty of Petroleum Chemistry and Polymeric Materials, D. Mendeleev University of Chemical Technology of Russia, 125047 Moscow, Russia., Finko AV; A.V. Topchiev Institute of Petrochemical Synthesis Russian Academy of Sciences, 119991 Moscow, Russia.; Faculty of Chemistry, M.V. Lomonosov Moscow State University, 119991 Moscow, Russia., Shandryuk GA; A.V. Topchiev Institute of Petrochemical Synthesis Russian Academy of Sciences, 119991 Moscow, Russia., Kuz'menok NM; Department of Chemistry, Belarusian State Technological University, 220006 Minsk, Belarus., Mikhalyonok SG; Department of Chemistry, Belarusian State Technological University, 220006 Minsk, Belarus., Bezborodov VS; Department of Chemistry, Belarusian State Technological University, 220006 Minsk, Belarus., Chernikova EV; A.V. Topchiev Institute of Petrochemical Synthesis Russian Academy of Sciences, 119991 Moscow, Russia.; Faculty of Chemistry, M.V. Lomonosov Moscow State University, 119991 Moscow, Russia., Talroze RV; A.V. Topchiev Institute of Petrochemical Synthesis Russian Academy of Sciences, 119991 Moscow, Russia. |
| Abstrakt: |
In the present research, we have synthesized new vinyl ketone monomers with mesogenic substituents, namely, 8-(3'-chloro-4'-pentyl-[1,1'-biphenyl-4-oxy)oct-1-en-3-one ( BVK ) and 8-[2'-chloro-4‴-octyl-[1,1':4',1″:4″,1‴-quaterphenyl-4-oxy]oct-1-en-3-one ( QVK ). The comparison of BVK , QVK , and previously synthesized 8-((4″-(( 1R,4S )-4-butylcyclohexyl)-2'-chloro-[1,1',4',1″-terphenyl]-4-yl)oxy)oct-1-en-3-one ( TVK ) has revealed that all of them are able to form crystals, while their ability to exhibit liquid crystalline behavior depends on the number of phenyl substituents attached to the para-position of the phenoxy group and is observed for TVK and QVK only. All of the monomers are able to achieve self-polymerization upon heating and free radical polymerization in bulk or in solution under the action of the common radical initiator AIBN. We have also succeeded in the RAFT polymerization of the synthesized vinyl ketones BVK and TVK using asymmetrical trithiocarbonates. The synthesized poly(vinyl ketones) exhibit LC behavior and are able to undergo photodegradation upon UV irradiation. |
