scispace - formally typeset
Search or ask a question
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.


Papers
More filters
Patent
27 Jan 1994
TL;DR: A fiber-reinforced cycloolefin polymer material comprises 1 to 99% by weight of reinforcing fibers, in particular glass fibers, and 99 to 1% of a cycloo-lefin copolymer which is built up from a polycyclo-olefin which is derived from norbornene, for example tetracyclododecene, and at least one olefin which was chosen from monocycloolefins having 4 to 12 C atoms (VII) and/or the group of acyclic olefs VIII ##STR
Abstract: A fiber-reinforced cycloolefin polymer material comprises 1 to 99% by weight of reinforcing fibers, in particular glass fibers, and 99 to 1% by weight of a cycloolefin copolymer which is built up from a) at least one (polycyclo)olefin which is derived from norbornene, for example tetracyclododecene, and b) at least one olefin which is chosen from monocycloolefins having 4 to 12 C atoms (VII) and/or the group of acyclic olefins VIII ##STR1## in which R 9 , R 10 , R 11 and R 12 are identical or different and are a hydrogen atom or a C 1 -C 8 -alkyl radical. VII is preferably ethylene. The monomer units of the (polycyclo)olefin in the cycloolefin copolymer molecule are in each case separated by monomer units of the cyclic olefins VII and/or of the acyclic olefins of the formula VIII.

37 citations

Journal ArticleDOI
TL;DR: In this paper, a tetrapodal nitrogen ligand was synthesized for the first time in the monoclinic space groups P21/c (no. 14) with a=11.458, b=15.302, c=20.644, β=99.23, and V=3572.7 A3, Z=4.

37 citations

Journal ArticleDOI
TL;DR: A class of cationic bottle-brush polymers that show ionic strength-dependent stimuli responsiveness is prepared and becomes insoluble in solution due to the screening effect of salts that yield the once-dominant electrostatic interactions among QA species to hydrophobic-hydrophobic interactions.
Abstract: A class of cationic bottle-brush polymers that show ionic strength-dependent stimuli responsiveness is prepared. Brush polymers with norbornene as backbone and quaternary ammonium (QA)-containing polycaprolactone copolymers as side chains are synthesized by a combination of ring-opening metathesis polymerization, ring-opening polymerization, and click reaction. In water with low ionic strength, brush polymers are soluble due to the strong electrostatic repulsion between cationic QA groups. As the addition of salt to increase ionic strength, single brush polymers undergo a transition from extended conformation to collapsed state and finally become insoluble in solution due to the screening effect of salts that yield the once-dominant electrostatic interactions among QA species to hydrophobic-hydrophobic interactions.

37 citations

Journal ArticleDOI
TL;DR: VCl2(N-2, 6-Me2C6H3)(O-2 6-IPr2C 6H3) -methylaluminoxane catalyst has exhibited remarkable catalytic activity for ethylene polymerization as mentioned in this paper.
Abstract: VCl2(N-2, 6-Me2C6H3)(O-2, 6-iPr2C6H3) - methylaluminoxane catalyst has exhibited remarkable catalytic activity for ethylene polymerization. High molecular weight ring-opened poly(norbornene) has been prepared in the presence of V(CH2Ph)2(N-2, 6-Me2C6H3)(O-2, 6-iPr2C6H3).

37 citations

Journal ArticleDOI
TL;DR: From these results, it is clear that PHOS-FOL-DOX has the potential to act as a smart nanoreservoir with the magnetic field guidance, folate receptor targeting, and finally pH stimulation.

37 citations


Network Information
Related Topics (5)
Alkyl
223.5K papers, 2M citations
91% related
Ruthenium
40.1K papers, 996.5K citations
90% related
Palladium
64.7K papers, 1.3M citations
90% related
Aryl
95.6K papers, 1.3M citations
89% related
Polymerization
147.9K papers, 2.7M citations
88% related
Performance
Metrics
No. of papers in the topic in previous years
YearPapers
202376
2022165
2021113
2020119
2019141
2018136