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Multiarm Star-Shaped Polydimethylsiloxanes with a Dendritic Branching Center.
Tikhonov, Pavel A; Vasilenko, Nataliya G; Gallyamov, Marat O; Cherkaev, Georgii V; Vasil'ev, Viktor G; Demchenko, Nina V; Buzin, Mikhail I; Vasil'ev, Sergey G; Muzafarov, Aziz M.
Afiliação
  • Tikhonov PA; Enikolopov Institute of Synthetic Polymeric Materials, Russian Academy of Sciences, 117393 Moscow, Russia.
  • Vasilenko NG; Enikolopov Institute of Synthetic Polymeric Materials, Russian Academy of Sciences, 117393 Moscow, Russia.
  • Gallyamov MO; Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, 119991 Moscow, Russia.
  • Cherkaev GV; Faculty of Physics, Lomonosov Moscow State University, 119991 Moscow, Russia.
  • Vasil'ev VG; Enikolopov Institute of Synthetic Polymeric Materials, Russian Academy of Sciences, 117393 Moscow, Russia.
  • Demchenko NV; Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, 119991 Moscow, Russia.
  • Buzin MI; Enikolopov Institute of Synthetic Polymeric Materials, Russian Academy of Sciences, 117393 Moscow, Russia.
  • Vasil'ev SG; Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, 119991 Moscow, Russia.
  • Muzafarov AM; Institute of Problems of Chemical Physics, Russian Academy of Sciences, Academician Semeonov av. 1, Chernogolovka, 142432 Moscow, Russia.
Molecules ; 26(11)2021 May 29.
Article em En | MEDLINE | ID: mdl-34072317
New multiarm stars have been synthesized based on polylithium derivatives of high-generation carbosilane dendrimers. In the synthesis of multiarm stars based on the eighth-generation dendrimer, steric hindrances were observed even during the synthesis of a polylithium initiator. Subsequently, this led to chain transfer reactions between growing arms, as well as other side effects. As a result, dense nanogel formations with a higher tendency of ordering than in classical objects of this type were isolated from the reaction mixture. The study of the rheology of multiarm stars based on sixth-generation dendrimers made it possible to determine the activation energies of viscous flow in these objects, which makes it possible to consider them as objects with a macromolecular nature and a reptation flow mechanism.
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Idioma: En Revista: Molecules Assunto da revista: BIOLOGIA Ano de publicação: 2021 Tipo de documento: Article País de afiliação: Federação Russa

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Idioma: En Revista: Molecules Assunto da revista: BIOLOGIA Ano de publicação: 2021 Tipo de documento: Article País de afiliação: Federação Russa