Polymerization of Aryl Polyisocyanides Catalyzed by N-Heterocyclic Carbene-Ligated Scandium Trialkyl Complex

Jia Liu; Yi Liu; Shaowen Zhang

doi:10.1051/e3sconf/202340602018

Polymerization of Aryl Polyisocyanides Catalyzed by N-Heterocyclic Carbene-Ligated Scandium Trialkyl Complex

Jia Liu, Yi Liu, Shaowen Zhang^*

^*Corresponding author for this work

School of Chemistry and Chemical Engineering

Beijing Institute of Technology

Research output: Contribution to journal › Conference article › peer-review

Abstract

Polyisocyanide has attracted continuous attention because of its stable helical rod structure and its wide application, it has a unique π-conjugated system in which the carbon-nitrogen double bond in each unit is twisted along the polymeric backbone to form a helical configuration. In this paper, a series of aryl isocyanides polymers are prepared using N-heterocyclic carbene-ligated scandium trialkyl complex 1 (IPr)Sc(CH2SiMe3)3 as the catalyst and 2 equiv. [Ph3C][B(C6F5)4] as the co-catalyst. The catalyst can convert 96% of 100 equiv. monomer in 5 minutes and the activity of the polymerization can reach 329 kg of polymer molSc-1 h-1. Two optically active polymers are obtained by using chiral monomers, they show strong CD signal at 364 nm and the two signals are opposite.

Original language	English
Article number	02018
Journal	E3S Web of Conferences
Volume	406
DOIs	https://doi.org/10.1051/e3sconf/202340602018
Publication status	Published - 31 Jul 2023
Event	9th International Conference on Energy Materials and Environment Engineering, ICEMEE 2023 - Virtual, Online, Malaysia Duration: 8 Jun 2023 → 10 Jun 2023

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title = "Polymerization of Aryl Polyisocyanides Catalyzed by N-Heterocyclic Carbene-Ligated Scandium Trialkyl Complex",

abstract = "Polyisocyanide has attracted continuous attention because of its stable helical rod structure and its wide application, it has a unique π-conjugated system in which the carbon-nitrogen double bond in each unit is twisted along the polymeric backbone to form a helical configuration. In this paper, a series of aryl isocyanides polymers are prepared using N-heterocyclic carbene-ligated scandium trialkyl complex 1 (IPr)Sc(CH2SiMe3)3 as the catalyst and 2 equiv. [Ph3C][B(C6F5)4] as the co-catalyst. The catalyst can convert 96% of 100 equiv. monomer in 5 minutes and the activity of the polymerization can reach 329 kg of polymer molSc-1 h-1. Two optically active polymers are obtained by using chiral monomers, they show strong CD signal at 364 nm and the two signals are opposite.",

author = "Jia Liu and Yi Liu and Shaowen Zhang",

note = "Publisher Copyright: {\textcopyright} The Authors, published by EDP Sciences.; 9th International Conference on Energy Materials and Environment Engineering, ICEMEE 2023 ; Conference date: 08-06-2023 Through 10-06-2023",

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doi = "10.1051/e3sconf/202340602018",

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T1 - Polymerization of Aryl Polyisocyanides Catalyzed by N-Heterocyclic Carbene-Ligated Scandium Trialkyl Complex

AU - Liu, Jia

AU - Liu, Yi

AU - Zhang, Shaowen

N1 - Publisher Copyright: © The Authors, published by EDP Sciences.

PY - 2023/7/31

Y1 - 2023/7/31

N2 - Polyisocyanide has attracted continuous attention because of its stable helical rod structure and its wide application, it has a unique π-conjugated system in which the carbon-nitrogen double bond in each unit is twisted along the polymeric backbone to form a helical configuration. In this paper, a series of aryl isocyanides polymers are prepared using N-heterocyclic carbene-ligated scandium trialkyl complex 1 (IPr)Sc(CH2SiMe3)3 as the catalyst and 2 equiv. [Ph3C][B(C6F5)4] as the co-catalyst. The catalyst can convert 96% of 100 equiv. monomer in 5 minutes and the activity of the polymerization can reach 329 kg of polymer molSc-1 h-1. Two optically active polymers are obtained by using chiral monomers, they show strong CD signal at 364 nm and the two signals are opposite.

AB - Polyisocyanide has attracted continuous attention because of its stable helical rod structure and its wide application, it has a unique π-conjugated system in which the carbon-nitrogen double bond in each unit is twisted along the polymeric backbone to form a helical configuration. In this paper, a series of aryl isocyanides polymers are prepared using N-heterocyclic carbene-ligated scandium trialkyl complex 1 (IPr)Sc(CH2SiMe3)3 as the catalyst and 2 equiv. [Ph3C][B(C6F5)4] as the co-catalyst. The catalyst can convert 96% of 100 equiv. monomer in 5 minutes and the activity of the polymerization can reach 329 kg of polymer molSc-1 h-1. Two optically active polymers are obtained by using chiral monomers, they show strong CD signal at 364 nm and the two signals are opposite.

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U2 - 10.1051/e3sconf/202340602018

DO - 10.1051/e3sconf/202340602018

M3 - Conference article

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SN - 2267-1242

VL - 406

JO - E3S Web of Conferences

JF - E3S Web of Conferences

M1 - 02018

T2 - 9th International Conference on Energy Materials and Environment Engineering, ICEMEE 2023

Y2 - 8 June 2023 through 10 June 2023

ER -

Polymerization of Aryl Polyisocyanides Catalyzed by N-Heterocyclic Carbene-Ligated Scandium Trialkyl Complex

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