Inorganic and organometallic polymers

Noonan, Kevin J. T.; Gates, Derek P.

doi:10.1039/b612872f

Cited by 6 publications

(7 citation statements)

References 151 publications

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“…This report complements previous articles in this series 1 and surveys the 2007 literature in the area of inorganic and organometallic polymers. The article is divided into eight sections beginning with this introductory part.…”

Section: Introductionsupporting

confidence: 71%

“…In 2007, a remarkable cyclic ferrocenophane polymer was prepared by photolysing [1]ferrocenophane 37 in the presence of the chelating N-donor ligand 4,4 0 -dimethyl-2,2 0 -bipyridine (Me 2 bpy) as an initiator. 97 The cyclic polymer 38 was isolated and GPC analysis (vs polystyrene) revealed a modest molecular weight (M n = 11 900 g mol À1 ; PDI = 2.12).…”

Section: Ferrocene-containing and Related Organometallic Polymersmentioning

confidence: 99%

“…Other pyridyl ligands were examined as potential initiators for photolytic ROP of compound 37. A report describing the preparation and polymerization of sila [1]ferrocenophanes containing alkyne substituents was published in the past year. 99 Strained [1]ferrocenophane 39 was observed to undergo living ROP under photocontrolled conditions with NaCp as the initiator.…”

Section: Ferrocene-containing and Related Organometallic Polymersmentioning

confidence: 99%

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Inorganic and organometallic polymers

Noonan

Gates

2008

Annu. Rep. Prog. Chem., Sect. A: Inorg. Chem.

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Polymers composed partially or entirely of inorganic elements in the main chain possess unique structures, properties and applications. This report summarizes the developments in the synthesis and study of macromolecules which incorporate main group and transition elements in the polymer backbone. HighlightsMajor accomplishments in the synthesis of inorganic polymers reported in 2007 include: the use of self-assembly to chemically micropattern polysiloxanes, the synthesis of p-conjugated oligomeric models for poly(phenylenedisilene), the preparation of novel polythiophenes bearing borane substituents, the isolation of cyclic ferrocenophane macromolecules, the ''living'' growth of micelles from ferrocenylsilane block copolymers, and the observation of novel electron transfer and conductive properties of zinc-porphyrin polymers.

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Section: Introductionsupporting

confidence: 71%

Section: Ferrocene-containing and Related Organometallic Polymersmentioning

confidence: 99%

Section: Ferrocene-containing and Related Organometallic Polymersmentioning

confidence: 99%

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Inorganic and organometallic polymers

Noonan

Gates

2008

Annu. Rep. Prog. Chem., Sect. A: Inorg. Chem.

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“…PDMS is a widely used silicon-based organic polymer, and is particularly known for its unique properties such as curing at low temperatures, rapid curing at high temperature, deformation reversibility and surface chemistry controllable by reasonably well-developed techniques. PDMS is optically clear, and, in general, is considered to be inert, non-toxic and non-flammable [17,18]. Previous studies have mainly focused on the structural properties of PDMS [19] and the kinetic properties under crystallization from solution [20].…”

Section: Introductionmentioning

confidence: 99%

Fabrication and characterization of PDMS based magnetorheological elastomers

Nakano

2013

Smart Mater. Struct.

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This paper presents the fabrication and characterization of a new magnetorheological elastomer (MRE) by using polydimethylsiloxane (PDMS) as a matrix. The base and curing agent of PDMS with a weight ratio of 10:1 were mixed first as the carrying matrix, and then carbonyl iron particles were added to the matrix and stirred sufficiently. The final mixture was placed in a vacuum chamber to eliminate bubbles for 30 min and was moulded later to form membranes of 1 mm thickness. A total of four PDMS based MRE samples, with different weight fractions of 60%, 70%, 80%, and 90%, were fabricated. Their mechanical properties under both steady-state and dynamic loading conditions were tested. The effects of particle composition, magnetic field, strain amplitude and frequency on the MRE effects were summarized. With the increase of iron particle composition, the magnetorheological effects of the samples increase steadily. It is also noted that the initial modulus of the MRE samples shows an increasing trend with the iron particle composition. Additionally, the microstructures of the PDMS based MREs were also observed by a low vacuum scanning electric microscope (LV-SEM). Sendai, Japan AbstractThis paper presents the fabrication and characterisation of a new magnetorheological elastomer (MRE) by using Polydimethylsiloxane (PDMS) as a matrix. The base and curing agent of PDMS with a weight ratio of 10:1 were mixed first as the carrying matrix, then carbonyl iron particles were added to the matrix and stirred sufficiently. The final mixture was placed in a vacuum chamber to eliminate bubbles in 30 minutes and was molded later to be membranes at 1mm thickness. A total of four PDMS based MRE samples, with different weight fractions of 60%, 70%, 80%, and 90%, were fabricated. Their mechanical properties under both steady-state and dynamic loading conditions were tested. The effects of particle composition, magnetic field, strain amplitude and frequency on the MRE effects were summarized. With the increase of iron particle composition, the PDMS based MRE samples increase steadily. It is also noted that the initial modulus of the MRE samples shows an increasing trend with the iron particle composition. Additionally, the microstructures of the PDMS based MREs were also observed by a low vacuum scanning electric microscope (LV SEM).

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“…Azobenzene containing polymers have received great attention in recent years because of their combined properties of anisotropic liquid crystals, photoresponsive materials and flexible polymers [1][2][3][4][5][6][7][8]. The liquid crystalline properties of azo polymers are related to the rod-like trans-azo mesogens, and the photoinduced fast and reversible isomerization between the trans-and cisisomers of the azo groups upon exposure to UV or visible light provides them with fascinating photoresponsive properties, which can lead to photoinduced reorientation of azo groups in the polymers and triggers significant changes in their physicochemical properties.…”

Section: Introductionmentioning

confidence: 99%

Synthesis and Electrooptical Properties of Side-Chain Polymethacrylates and Polycomplexes Containing Azobenzene Moieties with Different Length Spacers

Savchenko¹

2014

ChChT

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We propose new structures of metal-containing azopolymers with changeable electro-optical properties depending on different length spacers. The new monomers-4-{4-[4-(methacroyloxy)butoxy)phenyl] diazenyl benzoic acid, 4-{4-[4-(methacroyloxy)octyl) oxy]phenyl}diazenyl] benzoic acid and their complexes with Co and polymers based on these ones were synthesized. The influence of the electric field on the absorption spectra of new metal-containing azopolymers was investigated. Electro-optical properties of polymeric films are determined by the reorientation of dipole moments of azobenzene groups photo induced by the polarized light in the electric field. Increase of structural flexibility due to the photo isomerization of azobenzene groups increases the electro-optical effect value.

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Inorganic and organometallic polymers

Cited by 6 publications

References 151 publications

Inorganic and organometallic polymers

Inorganic and organometallic polymers

Fabrication and characterization of PDMS based magnetorheological elastomers

Synthesis and Electrooptical Properties of Side-Chain Polymethacrylates and Polycomplexes Containing Azobenzene Moieties with Different Length Spacers

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