The New Possibility of Vinylideneruthenium(II) Complexes Derived from Terminal Alkynes: Ring-Opening Metathesis Polymerization of Norbornene Derivatives

1998 ◽  
Vol 27 (1) ◽  
pp. 67-68 ◽  
Author(s):  
Hiroyuki Katayama ◽  
Fumiyuki Ozawa
Keyword(s):  
Ring Opening ◽  
Terminal Alkynes ◽  
Ring Opening Metathesis Polymerization ◽  
Metathesis Polymerization ◽  
Norbornene Derivatives

Highly photoluminescent poly(norbornene)s carrying platinum-acetylide complex moieties in the side chain: evaluation of oxygen sensing and TTA–UC

2021 ◽  
Author(s):  
Taichi Sotani ◽  
Toshiko Mizokuro ◽  
Tatsuo Yajima ◽  
Hiromitsu Sogawa ◽  
Fumio Sanda
Keyword(s):  
Ring Opening ◽  
Oxygen Sensing ◽  
Polymeric Materials ◽  
Side Chain ◽  
Thermally Stable ◽  
Ring Opening Metathesis Polymerization ◽  
Metathesis Polymerization ◽  
Norbornene Derivatives

Ring-opening metathesis polymerization (ROMP) of norbornene derivatives is useful for preparing thermally stable and transparent polymeric materials with good moldability. This study deals with ROMP of norbornene monomer 1 bearing...

Cationic tungsten imido alkylidene N-heterocyclic carbene complexes for stereospecific ring-opening metathesis polymerization of norbornene derivatives

2021 ◽  
Author(s):  
Janis V. Musso ◽  
Mathis Benedikter ◽  
Paul Gebel ◽  
Vincent Gramm ◽  
Dongren Wang ◽  
...  
Keyword(s):  
Ring Opening ◽  
Ring Opening Metathesis Polymerization ◽  
Carbene Complexes ◽  
Metathesis Polymerization ◽  
Norbornene Derivatives

Cationic W alkylidene N-heterocyclic carbene complexes allow for the stereospecific ring-opening metathesis polymerization of norbornenes with high trans-iso- and high cis-syndiospecificity, respectively.

scholarly journals Selective ring-opening metathesis polymerization (ROMP) of cyclobutenes. Unsymmetrical ladderphane containing polycyclobutene and polynorbornene strands

2019 ◽  
Vol 15 ◽  
pp. 44-51 ◽  
Author(s):  
Yuan-Zhen Ke ◽  
Shou-Ling Huang ◽  
Guoqiao Lai ◽  
Tien-Yau Luh
Keyword(s):  
Methyl Ester ◽  
Ambient Temperature ◽  
Ring Opening ◽  
First Generation ◽  
Double Bonds ◽  
Ring Opening Metathesis Polymerization ◽  
Metathesis Polymerization ◽  
Selective Ring Opening ◽  
Norbornene Derivatives

At 0 °C in THF in the presence of Grubbs first generation catalyst, cyclobutene derivatives undergo ROMP readily, whereas norbornene derivatives remain intact. When the substrate contains both cyclobutene and norbornene moieties, the conditions using THF as the solvent at 0 °C offer a useful protocol for the selective ROMP of cyclobutene to give norbornene-appended polycyclobutene. Unsymmetrical ladderphane having polycyclobutene and polynorbornene as two strands is obtained by further ROMP of the norbornene appended polycyclobutene in the presence of Grubbs first generation catalyst in DCM at ambient temperature. Methanolysis of this unsymmetrical ladderphane gives polycyclobutene methyl ester and insoluble polynorbornene-amide-alcohol. The latter is converted into the corresponding soluble acetate. Both polymers are well characterized by spectroscopic means. No norbornene moiety is found to be incorporated into polycyclobutene strand at all. The double bonds in the polycyclobutene strand are mainly in cis configuration (ca 70%), whereas the E/Z ratio for polynorbornene strand is 8:1.

Synthesis of Bismuth Oxide Nanoclusters from Norbornene Diblock Copolymer Template

2012 ◽  
Vol 550-553 ◽  
pp. 777-779 ◽  
Author(s):  
Chuan Yi Pan ◽  
Yan Yan ◽  
Heng De Li ◽  
Sheng Hu
Keyword(s):  
Bismuth Oxide ◽  
Diblock Copolymer ◽  
Ring Opening ◽  
Synthesis And Characterization ◽  
Oxide Formation ◽  
Ring Opening Metathesis Polymerization ◽  
Metathesis Polymerization ◽  
Copolymer Micelles ◽  
Norbornene Derivatives

The synthesis and characterization of well-dispersed Bi2O3 nanoclusters from diblock copolymer are reported. A diblock copolymer template of norbornene derivatives was synthesized using ring-opening metathesis polymerization. By introducing BiCl3 into the diblock copolymer template, the bismuth oxide nanoclusters within the copolymer micelles were achieved by NaOH soaking and water wash. Finally, FTIR and TEM were used to characterize the nanocomposite morphology and the process of oxide formation

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