Immobilization of monometallic acetonitrile complexes on mesoporous silica and their activity as initiators for cyclopentadiene polymerization

Martyn Pillinger; Isabel S. Gonçalves; Anabela A. Valente; Paula Ferreira; Dirk Schön; Oskar Nuyken; Fritz E. Kühn

doi:10.1163/156855501750536251

Immobilization of monometallic acetonitrile complexes on mesoporous silica and their activity as initiators for cyclopentadiene polymerization

Martyn Pillinger
, Isabel S. Gonçalves
, Anabela A. Valente
, Paula Ferreira
, Dirk Schön
, Oskar Nuyken
, Fritz E. Kühn

Associate Professorship of Molecular Catalysis

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

2 Scopus citations

Abstract

Monometallic acetonitrile complexes [M(MeCN)₄][BF ₄]₂ (M = Mn^II, Fe^II, Co ^II, Ni^II, Cr^II and Zn^II) have been immobilized onto the surface of purely siliceous MCM-41 and tested for their activity as initiators for cyclopentadiene polymerization. The integrity of the MCM-41 hexagonal mesoporous structure in the modified materials was verified by powder X-ray diffraction (XRD) and N₂-adsorption measurements. FTIR spectroscopy suggests that the acetonitrile complexes do not undergo significant changes during the fixation process. The heterogenized M²⁺ complexes catalyze the polymerization of cyclopentadiene but their activity is lower than that of the complexes in the homogeneous phase.

Original language	English
Pages (from-to)	268-278
Number of pages	11
Journal	Designed Monomers and Polymers
Volume	4
Issue number	3
DOIs	https://doi.org/10.1163/156855501750536251
State	Published - 1 Jul 2001

Keywords

Acetonitrile complexes
Cyclopentadiene polymerization
Immobilization
Mcm-41
Mesoporous silica
Transition metals

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10.1163/156855501750536251

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@article{42c5450ae2394186a73319ca82e86550,

title = "Immobilization of monometallic acetonitrile complexes on mesoporous silica and their activity as initiators for cyclopentadiene polymerization",

abstract = "Monometallic acetonitrile complexes [M(MeCN)4][BF 4]2 (M = MnII, FeII, Co II, NiII, CrII and ZnII) have been immobilized onto the surface of purely siliceous MCM-41 and tested for their activity as initiators for cyclopentadiene polymerization. The integrity of the MCM-41 hexagonal mesoporous structure in the modified materials was verified by powder X-ray diffraction (XRD) and N2-adsorption measurements. FTIR spectroscopy suggests that the acetonitrile complexes do not undergo significant changes during the fixation process. The heterogenized M2+ complexes catalyze the polymerization of cyclopentadiene but their activity is lower than that of the complexes in the homogeneous phase.",

keywords = "Acetonitrile complexes, Cyclopentadiene polymerization, Immobilization, Mcm-41, Mesoporous silica, Transition metals",

author = "Martyn Pillinger and Gon{\c c}alves, \{Isabel S.\} and Valente, \{Anabela A.\} and Paula Ferreira and Dirk Sch{\"o}n and Oskar Nuyken and K{\"u}hn, \{Fritz E.\}",

year = "2001",

month = jul,

day = "1",

doi = "10.1163/156855501750536251",

language = "English",

volume = "4",

pages = "268--278",

journal = "Designed Monomers and Polymers",

issn = "1385-772X",

publisher = "Taylor and Francis Ltd.",

number = "3",

}

TY - JOUR

T1 - Immobilization of monometallic acetonitrile complexes on mesoporous silica and their activity as initiators for cyclopentadiene polymerization

AU - Pillinger, Martyn

AU - Gonçalves, Isabel S.

AU - Valente, Anabela A.

AU - Ferreira, Paula

AU - Schön, Dirk

AU - Nuyken, Oskar

AU - Kühn, Fritz E.

PY - 2001/7/1

Y1 - 2001/7/1

N2 - Monometallic acetonitrile complexes [M(MeCN)4][BF 4]2 (M = MnII, FeII, Co II, NiII, CrII and ZnII) have been immobilized onto the surface of purely siliceous MCM-41 and tested for their activity as initiators for cyclopentadiene polymerization. The integrity of the MCM-41 hexagonal mesoporous structure in the modified materials was verified by powder X-ray diffraction (XRD) and N2-adsorption measurements. FTIR spectroscopy suggests that the acetonitrile complexes do not undergo significant changes during the fixation process. The heterogenized M2+ complexes catalyze the polymerization of cyclopentadiene but their activity is lower than that of the complexes in the homogeneous phase.

AB - Monometallic acetonitrile complexes [M(MeCN)4][BF 4]2 (M = MnII, FeII, Co II, NiII, CrII and ZnII) have been immobilized onto the surface of purely siliceous MCM-41 and tested for their activity as initiators for cyclopentadiene polymerization. The integrity of the MCM-41 hexagonal mesoporous structure in the modified materials was verified by powder X-ray diffraction (XRD) and N2-adsorption measurements. FTIR spectroscopy suggests that the acetonitrile complexes do not undergo significant changes during the fixation process. The heterogenized M2+ complexes catalyze the polymerization of cyclopentadiene but their activity is lower than that of the complexes in the homogeneous phase.

KW - Acetonitrile complexes

KW - Cyclopentadiene polymerization

KW - Immobilization

KW - Mcm-41

KW - Mesoporous silica

KW - Transition metals

UR - https://www.scopus.com/pages/publications/33750330061

U2 - 10.1163/156855501750536251

DO - 10.1163/156855501750536251

M3 - Article

AN - SCOPUS:33750330061

SN - 1385-772X

VL - 4

SP - 268

EP - 278

JO - Designed Monomers and Polymers

JF - Designed Monomers and Polymers

IS - 3

ER -

Immobilization of monometallic acetonitrile complexes on mesoporous silica and their activity as initiators for cyclopentadiene polymerization

Abstract

Keywords

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