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

M. Pillinger; I. S. Gonçalves; A. A. Valente; P. Ferreira; D. Schön; O. Nuyken; F. E. Kühn

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

M. Pillinger, I. S. Gonçalves, A. A. Valente, P. Ferreira, D. Schön, O. Nuyken, F. E. Kühn

University of Aveiro

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

16 Scopus citations

Abstract

Monometallic acetonitrile complexes [M(MeCN)₄][BF₄]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)	269-279
Number of pages	11
Journal	Designed Monomers and Polymers
Volume	4
Issue number	3
State	Published - 2001
Externally published	Yes

Keywords

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

Cite this

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

abstract = "Monometallic acetonitrile complexes [M(MeCN)4][BF4]2 (M = MnII, FeII, CoII, 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 = "M. Pillinger and Gon{\c c}alves, {I. S.} and Valente, {A. A.} and P. Ferreira and D. Sch{\"o}n and O. Nuyken and K{\"u}hn, {F. E.}",

year = "2001",

language = "English",

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pages = "269--279",

journal = "Designed Monomers and Polymers",

issn = "1385-772X",

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TY - JOUR

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

AU - Pillinger, M.

AU - Gonçalves, I. S.

AU - Valente, A. A.

AU - Ferreira, P.

AU - Schön, D.

AU - Nuyken, O.

AU - Kühn, F. E.

PY - 2001

Y1 - 2001

N2 - Monometallic acetonitrile complexes [M(MeCN)4][BF4]2 (M = MnII, FeII, CoII, 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][BF4]2 (M = MnII, FeII, CoII, 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 - http://www.scopus.com/inward/record.url?scp=0034823978&partnerID=8YFLogxK

M3 - Article

AN - SCOPUS:0034823978

SN - 1385-772X

VL - 4

SP - 269

EP - 279

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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