Topic
Norbornene
About: Norbornene is a research topic. Over the lifetime, 5628 publications have been published within this topic receiving 104495 citations. The topic is also known as: norbornylene & norcamphene.
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TL;DR: A series of fluxional intramolecular η2-bound arene complexes, (C7H8Ar)Pdl(PPh3), 1a-1d, and 2 may be isolated from the catalytic reactions of norbornadiene (or norbornene) with aryl iodides in the presence of Zn and PdCl2(pPh3)2(eqn. 1) and their structures have been determined by X-ray crystallography and NMR spectroscopy.
Abstract: A series of fluxional intramolecular η2-bound arene complexes, (C7H8Ar)Pdl(PPh3), 1a–1d, and 2 may be isolated from the catalytic reactions of norbornadiene (or norbornene) with aryl iodides in the presence of Zn and PdCl2(PPh3)2(eqn. 1) and their structures have been determined by X-ray crystallography and NMR spectroscopy.
67 citations
TL;DR: A series of neutral palladium(II) complexes bearing non-symmetric bidentate pyrrole-iminato or salicylaldiminiato chelate ligands have been synthesized, and the structure of representative complexes (3a, 4a, and 5a) have been confirmed by X-ray crystallographic analysis as mentioned in this paper.
67 citations
Patent•
02 Mar 1999TL;DR: In this article, a method of making polymer blends using series reactors and a metallocene catalyst was proposed, which relates to making blends of EP copolymers in which the blend components differ in any of the following characteristics: 1) composition, 2) molecular weight, and 3) crystallinity.
Abstract: This invention relates to a method of making polymer blends using series reactors and a metallocene catalyst. Monomers used by the invention are ethylene, a higher alpha-olefin (propylene most preferred), and optionally, a non-conjugated diene (ethylidene norbornene, i.e., ENB, most preferred). More specifically, this invention relates to making blends of EP (ethylene-propylene) copolymers in which the blend components differ in any of the following characteristics: 1) composition, 2) molecular weight, and 3) crystallinity. We use the terminology EP copolymer to also include terpolymers that contain varying amounts of non-conjugated diene. Such terpolymers are commonly known as EPDM.
67 citations
TL;DR: Ring-opening metathesis polymerization (ROMP) using Grubbs third-generation catalyst directly yielded a norbornene-based polymer bearing robust redox-active radicals without any protection.
Abstract: Ring-opening metathesis polymerization (ROMP) using Grubbs third-generation catalyst directly yielded a norbornene-based polymer bearing robust redox-active radicals without any protection. Successive addition of imidazolium-containing norbornene in a one-pot reaction during ROMP produced pendant radical- and ion-containing block copolymers. The diode-structured thin-film devices fabricated with the obtained block polymers that had morphologies of spheres, lamellae, and inverse spheres exhibited conductive switching (write-once read-many-times, WORM) under a bias voltage, which revealed the dominant effect of the location of radicals and ions in the microphase-segregated domains on memory characteristics.
67 citations
Patent•
02 Mar 1993
TL;DR: A thermoplastic norbornene polymer with a number average molecular weight of 10,00 - 200,000 as determined by gel permeation chromatography in toluene solvent and calculated as styrene is defined in this paper.
Abstract: A polymer composition comprising a thermoplastic norbornene polymer which preferably has a number average molecular weight of 10,00 - 200,000 as determined by gel permeation chromatography in toluene solvent and calculated as styrene and a content of norbornene polymer components having a number average molecular weight of 2,000 or less of 1% by weight or less, and a compounding ingredient, such as a rubber-like polymer, wherein the compounding ingredient is preferably dispersed in the form of microdomains in the norbornene polymer; and medical implements and optical naturals formed essentially of the composition.
67 citations