POLYCYCLOTRIMERIZATION OF DIYNES,A NEW APPROACH TO HYPERBRANCHED POLYPHENYLENES*

Your Location：

Home >

Browse articles >

POLYCYCLOTRIMERIZATION OF DIYNES,A NEW APPROACH TO HYPERBRANCHED POLYPHENYLENES*

Papers | Updated：2021-06-21

- POLYCYCLOTRIMERIZATION OF DIYNES,A NEW APPROACH TO HYPERBRANCHED POLYPHENYLENES*
- POLYCYCLOTRIMERIZATION OF DIYNES,A NEW APPROACH TO HYPERBRANCHED POLYPHENYLENES*
- 高分子科学（英文版） 1999年17卷第4期页码：397-402
- Affiliations：
- Author bio：
- Funds：
- DOI：
  中图分类号：
- 纸质出版：1999-08-20
- Accepted：
Scan QR Code
POLYCYCLOTRIMERIZATION OF DIYNES,A NEW APPROACH TO HYPERBRANCHED POLYPHENYLENES*[J]. 高分子科学（英文版）, 1999,17(4):397-402.

POLYCYCLOTRIMERIZATION OF DIYNES,A NEW APPROACH TO HYPERBRANCHED POLYPHENYLENES*[J]. 1999, 17(4): 397-402.
POLYCYCLOTRIMERIZATION OF DIYNES,A NEW APPROACH TO HYPERBRANCHED POLYPHENYLENES*[J]. 高分子科学（英文版）, 1999,17(4):397-402. DOI：

POLYCYCLOTRIMERIZATION OF DIYNES,A NEW APPROACH TO HYPERBRANCHED POLYPHENYLENES*[J]. 1999, 17(4): 397-402. DOI：

摘要

Polycyclotrimerization of diynes was explored as a new route to hyperbranched polymers in thisinvestigation. Polymerization of terminal diynes of 1

8-nonadiyne and 1

9-decadiyne was studied usingTaCl5

NbCl5

Mo(CO)4(nbd) and [Mo(CO)3cp]2 as catalysts (where nbd = 2

5-norbornadiene

cp = cyclo-pentadiene). A soluble polymer was obtained when the polymerization of 1.9-decadiyne was initiated byTaCl5 at low temperature (0℃). The polymer

however

became partially soluble after purification

possibly due to the postpolymerization-induced crosslinking.NbCl5-catalyzed polymerization of 1

9-bis(trimethylsilyl)-1

-8-nonadiyne gave a completely soluble polymer.Soluble polymers were also obtained from the polymerization of 3

9-dodecadiyne initiated by NbCl5

Mo(CO)4(nbd)

[Mo(CO)3cp]2

PdCl2-ClSiMe3 and Pd/C-ClSiMe3.IR

and NMR spectroscopic analysis revealed that different catalysts gave polymers with different structures

ranging from linear polyenes to hyperbranched polyphenylenes.The polymers absorb UV light at around 250 nm and emit fluorescence at 340 nm when they are excited at 248 nm.

Abstract

Polycyclotrimerization of diynes was explored as a new route to hyperbranched polymers in thisinvestigation. Polymerization of terminal diynes of 1

8-nonadiyne and 1

9-decadiyne was studied usingTaCl5

NbCl5

Mo(CO)4(nbd) and [Mo(CO)3cp]2 as catalysts (where nbd = 2

5-norbornadiene

cp = cyclo-pentadiene). A soluble polymer was obtained when the polymerization of 1.9-decadiyne was initiated byTaCl5 at low temperature (0℃). The polymer

however

became partially soluble after purification

possibly due to the postpolymerization-induced crosslinking.NbCl5-catalyzed polymerization of 1

9-bis(trimethylsilyl)-1

-8-nonadiyne gave a completely soluble polymer.Soluble polymers were also obtained from the polymerization of 3

9-dodecadiyne initiated by NbCl5

Mo(CO)4(nbd)

[Mo(CO)3cp]2

PdCl2-ClSiMe3 and Pd/C-ClSiMe3.IR

and NMR spectroscopic analysis revealed that different catalysts gave polymers with different structures

ranging from linear polyenes to hyperbranched polyphenylenes.The polymers absorb UV light at around 250 nm and emit fluorescence at 340 nm when they are excited at 248 nm.

关键词

Keywords

references

浏览量

Downloads

CSCD

文章被引用时，请邮件提醒。

Submit

工具集

关联资源

Sequence-encoded Conformation Pathways in Viscoelastic Microphase Separation of Multiblock Copolymers

End-group and Side-chain Dual-engineering of Selenium-fused Acceptors for 20.08% Efficiency Polymer Solar Cells with Low Energy Loss

Bioinspired Zinc-doped Nano Hydroxyapatite Reinforced Poly(lactic acid) Composites for Bone Repair

Energy Storage Performance of Supercapacitors with Polyelectrolyte Surface Coatings: Effects of Dielectric Contrast

Improvements of Hydrophobicity and Toughness of Epoxy Coatings Modified with Hydroxyl-terminated Fluororubber