Copolymers from norbornene and norbornadiene with organized morphologies and high: T g values obtained via ROMP with a highly reactive [RuCl3(PCy3)2] complex

C. P. Ferraz; L. R. Fonseca; V. Tomazetti; F. C.S. Silva; B. S. Lima-Neto; V. P. Carvalho

doi:10.1039/c6nj02096h

Copolymers from norbornene and norbornadiene with organized morphologies and high: T _g values obtained via ROMP with a highly reactive [RuCl₃(PCy₃)₂] complex

C. P. Ferraz, L. R. Fonseca, V. Tomazetti, F. C.S. Silva, B. S. Lima-Neto, V. P. Carvalho

Chemistry (Twin Cities)

Research output: Contribution to journal › Article › peer-review

6 Scopus citations

Abstract

The [RuCl₃(PCy₃)₂] complex presented high reactivity toward ring opening metathesis polymerization (ROMP) of norbornadiene (NBD) in a non-degassed solution upon addition of ethyl diazoacetate (EDA). Quantitative yields of polyNBD were obtained instantaneously at 25 °C. ROMP of norbornene (NBE) occurred better at 50 °C for 60 min, with 95% of isolated polyNBE. Copolymers with different porous structures were obtained from ROMP of NBE in the presence of NBD with different starting [NBE]/[NBD] molar ratios at 25 °C. SEM micrographs showed a more organized porous structure as the NBD loading decreased. A well-defined honeycomb-like pattern was recorded for the copolymer from the run with an NBE:NBD molar ratio load of 5000:500. The T_g values varied from 37 °C in polyNBE to 90 °C in poly[NBE-co-NBD] as the NBD loading increased.

Original language	English (US)
Pages (from-to)	9424-9431
Number of pages	8
Journal	New Journal of Chemistry
Volume	40
Issue number	11
DOIs	https://doi.org/10.1039/c6nj02096h
State	Published - 2016

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Publisher Copyright:
This journal is © The Royal Society of Chemistry and the Centre National de la Recherche Scientifique.

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title = "Copolymers from norbornene and norbornadiene with organized morphologies and high: T g values obtained via ROMP with a highly reactive [RuCl3(PCy3)2] complex",

abstract = "The [RuCl3(PCy3)2] complex presented high reactivity toward ring opening metathesis polymerization (ROMP) of norbornadiene (NBD) in a non-degassed solution upon addition of ethyl diazoacetate (EDA). Quantitative yields of polyNBD were obtained instantaneously at 25 °C. ROMP of norbornene (NBE) occurred better at 50 °C for 60 min, with 95% of isolated polyNBE. Copolymers with different porous structures were obtained from ROMP of NBE in the presence of NBD with different starting [NBE]/[NBD] molar ratios at 25 °C. SEM micrographs showed a more organized porous structure as the NBD loading decreased. A well-defined honeycomb-like pattern was recorded for the copolymer from the run with an NBE:NBD molar ratio load of 5000:500. The Tg values varied from 37 °C in polyNBE to 90 °C in poly[NBE-co-NBD] as the NBD loading increased.",

author = "Ferraz, {C. P.} and Fonseca, {L. R.} and V. Tomazetti and Silva, {F. C.S.} and Lima-Neto, {B. S.} and Carvalho, {V. P.}",

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T2 - T g values obtained via ROMP with a highly reactive [RuCl3(PCy3)2] complex

AU - Ferraz, C. P.

AU - Fonseca, L. R.

AU - Tomazetti, V.

AU - Silva, F. C.S.

AU - Lima-Neto, B. S.

AU - Carvalho, V. P.

N1 - Publisher Copyright: This journal is © The Royal Society of Chemistry and the Centre National de la Recherche Scientifique.

PY - 2016

Y1 - 2016

N2 - The [RuCl3(PCy3)2] complex presented high reactivity toward ring opening metathesis polymerization (ROMP) of norbornadiene (NBD) in a non-degassed solution upon addition of ethyl diazoacetate (EDA). Quantitative yields of polyNBD were obtained instantaneously at 25 °C. ROMP of norbornene (NBE) occurred better at 50 °C for 60 min, with 95% of isolated polyNBE. Copolymers with different porous structures were obtained from ROMP of NBE in the presence of NBD with different starting [NBE]/[NBD] molar ratios at 25 °C. SEM micrographs showed a more organized porous structure as the NBD loading decreased. A well-defined honeycomb-like pattern was recorded for the copolymer from the run with an NBE:NBD molar ratio load of 5000:500. The Tg values varied from 37 °C in polyNBE to 90 °C in poly[NBE-co-NBD] as the NBD loading increased.

AB - The [RuCl3(PCy3)2] complex presented high reactivity toward ring opening metathesis polymerization (ROMP) of norbornadiene (NBD) in a non-degassed solution upon addition of ethyl diazoacetate (EDA). Quantitative yields of polyNBD were obtained instantaneously at 25 °C. ROMP of norbornene (NBE) occurred better at 50 °C for 60 min, with 95% of isolated polyNBE. Copolymers with different porous structures were obtained from ROMP of NBE in the presence of NBD with different starting [NBE]/[NBD] molar ratios at 25 °C. SEM micrographs showed a more organized porous structure as the NBD loading decreased. A well-defined honeycomb-like pattern was recorded for the copolymer from the run with an NBE:NBD molar ratio load of 5000:500. The Tg values varied from 37 °C in polyNBE to 90 °C in poly[NBE-co-NBD] as the NBD loading increased.

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