Hyperbranched polyarylenes

Matthias Häußler; Jacky W.Y. Lam; Ronghua Zheng; Han Peng; Jingdong Luo; Junwu Chen; Charles C.W. Law; Ben Zhong Tang

doi:10.1016/j.crci.2003.06.003

Hyperbranched polyarylenes

Matthias Häußler
, Jacky W.Y. Lam
, Ronghua Zheng
, Han Peng
, Jingdong Luo
, Junwu Chen
, Charles C.W. Law
, Ben Zhong Tang^*

^*Corresponding author for this work

Research output: Contribution to journal › Short survey › peer-review

47 Citations (Scopus)

Abstract

Alkyne polycyclotrimerizations are effected by tantalum- and cobalt-based catalysts, giving soluble hyperbranched polyarylenes (HPAs) with high molecular weights (M_w up to ̃2 × 10⁵) in high yields (up to 99.9%). All the HPAs exhibit excellent thermal stability, losing little of their weights when heated to > 400 °C. The HPAs graphitize when pyrolyzed at 800 °C in high yields (up to 86%). Upon photoexcitation, the HPAs efficiently emit strong deep-blue and blue-green light with fluorescence quantum yields up to 98%. The HPAs strongly attenuate intense laser pulses, with their limiting performances being superior to that of C₆₀, a well-known optical limiter.

Original language	English
Pages (from-to)	833-842
Number of pages	10
Journal	Comptes Rendus Chimie
Volume	6
Issue number	8-10
DOIs	https://doi.org/10.1016/j.crci.2003.06.003
Publication status	Published - 1 Aug 2003

Keywords

Alkyne polycyclotrimerization
Hyperbranched polyarylenes
Light emission
Optical limiting
Organometallic polymers
Photoluminescence
Thermal stability

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10.1016/j.crci.2003.06.003

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title = "Hyperbranched polyarylenes",

abstract = "Alkyne polycyclotrimerizations are effected by tantalum- and cobalt-based catalysts, giving soluble hyperbranched polyarylenes (HPAs) with high molecular weights (Mw up to{\~ }2 × 105) in high yields (up to 99.9\%). All the HPAs exhibit excellent thermal stability, losing little of their weights when heated to > 400 °C. The HPAs graphitize when pyrolyzed at 800 °C in high yields (up to 86\%). Upon photoexcitation, the HPAs efficiently emit strong deep-blue and blue-green light with fluorescence quantum yields up to 98\%. The HPAs strongly attenuate intense laser pulses, with their limiting performances being superior to that of C60, a well-known optical limiter.",

keywords = "Alkyne polycyclotrimerization, Hyperbranched polyarylenes, Light emission, Optical limiting, Organometallic polymers, Photoluminescence, Thermal stability",

author = "Matthias H{\"a}u{\ss}ler and Lam, \{Jacky W.Y.\} and Ronghua Zheng and Han Peng and Jingdong Luo and Junwu Chen and Law, \{Charles C.W.\} and Tang, \{Ben Zhong\}",

year = "2003",

month = aug,

day = "1",

doi = "10.1016/j.crci.2003.06.003",

language = "English",

volume = "6",

pages = "833--842",

journal = "Comptes Rendus Chimie",

issn = "1631-0748",

publisher = "Academie des sciences",

number = "8-10",

}

TY - JOUR

T1 - Hyperbranched polyarylenes

AU - Häußler, Matthias

AU - Lam, Jacky W.Y.

AU - Zheng, Ronghua

AU - Peng, Han

AU - Luo, Jingdong

AU - Chen, Junwu

AU - Law, Charles C.W.

AU - Tang, Ben Zhong

PY - 2003/8/1

Y1 - 2003/8/1

N2 - Alkyne polycyclotrimerizations are effected by tantalum- and cobalt-based catalysts, giving soluble hyperbranched polyarylenes (HPAs) with high molecular weights (Mw up to ̃2 × 105) in high yields (up to 99.9%). All the HPAs exhibit excellent thermal stability, losing little of their weights when heated to > 400 °C. The HPAs graphitize when pyrolyzed at 800 °C in high yields (up to 86%). Upon photoexcitation, the HPAs efficiently emit strong deep-blue and blue-green light with fluorescence quantum yields up to 98%. The HPAs strongly attenuate intense laser pulses, with their limiting performances being superior to that of C60, a well-known optical limiter.

AB - Alkyne polycyclotrimerizations are effected by tantalum- and cobalt-based catalysts, giving soluble hyperbranched polyarylenes (HPAs) with high molecular weights (Mw up to ̃2 × 105) in high yields (up to 99.9%). All the HPAs exhibit excellent thermal stability, losing little of their weights when heated to > 400 °C. The HPAs graphitize when pyrolyzed at 800 °C in high yields (up to 86%). Upon photoexcitation, the HPAs efficiently emit strong deep-blue and blue-green light with fluorescence quantum yields up to 98%. The HPAs strongly attenuate intense laser pulses, with their limiting performances being superior to that of C60, a well-known optical limiter.

KW - Alkyne polycyclotrimerization

KW - Hyperbranched polyarylenes

KW - Light emission

KW - Optical limiting

KW - Organometallic polymers

KW - Photoluminescence

KW - Thermal stability

UR - https://www.webofscience.com/wos/woscc/full-record/WOS:000186701800012

UR - https://openalex.org/W4236813517

U2 - 10.1016/j.crci.2003.06.003

DO - 10.1016/j.crci.2003.06.003

M3 - Short survey

SN - 1631-0748

VL - 6

SP - 833

EP - 842

JO - Comptes Rendus Chimie

JF - Comptes Rendus Chimie

IS - 8-10

ER -

Hyperbranched polyarylenes

Abstract

Keywords

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