Facile synthesis, large optical nonlinearity, and excellent thermal stability of hyperbranched poly(aryleneethynylene)s containing azobenzene chromophores

Zhen Li; Anjun Qin; Jacky W.Y. Lam; Yuping Dong; Yongqiang Dong; Cheng Ye; Ian D. Williams; Ben Zhong Tang

doi:10.1021/ma051924f

Facile synthesis, large optical nonlinearity, and excellent thermal stability of hyperbranched poly(aryleneethynylene)s containing azobenzene chromophores

Zhen Li
, Anjun Qin
, Jacky W.Y. Lam
, Yuping Dong
, Yongqiang Dong
, Cheng Ye
, Ian D. Williams
, Ben Zhong Tang^*

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

118 Citations (Scopus)

Abstract

Azo-functionalized hyperbranched poly(aryleneethynylene)s (hb-PAEs) (4 and 5) are synthesized by palladium-catalyzed coupling of triiodoarenes (1 and 2) with a diethynylazobenzene (3). The hb-PAEs are soluble, film-forming, and morphologically stable (T_g > 180°C). Their poled films exhibit nigh second-harmonicgeneration coefficients (d₃₃ up to 177 pm/V) thanks to the chromophore-separation and site-isolation effects of hyperbranched architectural structure of the polymers in the three-dimensional space. The optical nonlinearities of the poled films are thermally stable (no drop in d₃₃ when heated to 152°C) due to the facile cross-linking of the multiple acetylenic triple bonds in the hb-PAEs at moderate temperatures (down to 88°C).

Original language	English
Pages (from-to)	1436-1442
Number of pages	7
Journal	Macromolecules
Volume	39
Issue number	4
DOIs	https://doi.org/10.1021/ma051924f
Publication status	Published - 21 Feb 2006
Externally published	Yes

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@article{2c62d1b210424af785897c6243ff1b90,

title = "Facile synthesis, large optical nonlinearity, and excellent thermal stability of hyperbranched poly(aryleneethynylene)s containing azobenzene chromophores",

abstract = "Azo-functionalized hyperbranched poly(aryleneethynylene)s (hb-PAEs) (4 and 5) are synthesized by palladium-catalyzed coupling of triiodoarenes (1 and 2) with a diethynylazobenzene (3). The hb-PAEs are soluble, film-forming, and morphologically stable (Tg > 180°C). Their poled films exhibit nigh second-harmonicgeneration coefficients (d33 up to 177 pm/V) thanks to the chromophore-separation and site-isolation effects of hyperbranched architectural structure of the polymers in the three-dimensional space. The optical nonlinearities of the poled films are thermally stable (no drop in d33 when heated to 152°C) due to the facile cross-linking of the multiple acetylenic triple bonds in the hb-PAEs at moderate temperatures (down to 88°C).",

author = "Zhen Li and Anjun Qin and Lam, \{Jacky W.Y.\} and Yuping Dong and Yongqiang Dong and Cheng Ye and Williams, \{Ian D.\} and Tang, \{Ben Zhong\}",

year = "2006",

month = feb,

day = "21",

doi = "10.1021/ma051924f",

language = "English",

volume = "39",

pages = "1436--1442",

journal = "Macromolecules",

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publisher = "American Chemical Society",

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}

TY - JOUR

T1 - Facile synthesis, large optical nonlinearity, and excellent thermal stability of hyperbranched poly(aryleneethynylene)s containing azobenzene chromophores

AU - Li, Zhen

AU - Qin, Anjun

AU - Lam, Jacky W.Y.

AU - Dong, Yuping

AU - Dong, Yongqiang

AU - Ye, Cheng

AU - Williams, Ian D.

AU - Tang, Ben Zhong

PY - 2006/2/21

Y1 - 2006/2/21

N2 - Azo-functionalized hyperbranched poly(aryleneethynylene)s (hb-PAEs) (4 and 5) are synthesized by palladium-catalyzed coupling of triiodoarenes (1 and 2) with a diethynylazobenzene (3). The hb-PAEs are soluble, film-forming, and morphologically stable (Tg > 180°C). Their poled films exhibit nigh second-harmonicgeneration coefficients (d33 up to 177 pm/V) thanks to the chromophore-separation and site-isolation effects of hyperbranched architectural structure of the polymers in the three-dimensional space. The optical nonlinearities of the poled films are thermally stable (no drop in d33 when heated to 152°C) due to the facile cross-linking of the multiple acetylenic triple bonds in the hb-PAEs at moderate temperatures (down to 88°C).

AB - Azo-functionalized hyperbranched poly(aryleneethynylene)s (hb-PAEs) (4 and 5) are synthesized by palladium-catalyzed coupling of triiodoarenes (1 and 2) with a diethynylazobenzene (3). The hb-PAEs are soluble, film-forming, and morphologically stable (Tg > 180°C). Their poled films exhibit nigh second-harmonicgeneration coefficients (d33 up to 177 pm/V) thanks to the chromophore-separation and site-isolation effects of hyperbranched architectural structure of the polymers in the three-dimensional space. The optical nonlinearities of the poled films are thermally stable (no drop in d33 when heated to 152°C) due to the facile cross-linking of the multiple acetylenic triple bonds in the hb-PAEs at moderate temperatures (down to 88°C).

UR - https://www.scopus.com/pages/publications/33644623155

U2 - 10.1021/ma051924f

DO - 10.1021/ma051924f

M3 - Article

AN - SCOPUS:33644623155

SN - 0024-9297

VL - 39

SP - 1436

EP - 1442

JO - Macromolecules

JF - Macromolecules

IS - 4

ER -

Facile synthesis, large optical nonlinearity, and excellent thermal stability of hyperbranched poly(aryleneethynylene)s containing azobenzene chromophores

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