Synthesis and Optical Properties of Poly(2,2'-bis(2-hydroxyethoxy)- 1,1'-binaphthyl carbonate)

Qin-yao Jiang; Yuan-kang Zhang; Wei Bai; Chen Li; Qing-yin Wang; Gong-ying Wang

doi:10.11777/j.issn1000-3304.2025.25049

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Synthesis and Optical Properties of Poly(2,2'-bis(2-hydroxyethoxy)- 1,1'-binaphthyl carbonate)

Research Article | 更新时间：2025-07-28

- Synthesis and Optical Properties of Poly(2,2'-bis(2-hydroxyethoxy)- 1,1'-binaphthyl carbonate)
- Acta Polymerica Sinica Vol. 56, Issue 8, Pages: 1405-1415(2025)
- 作者机构：
  
  1.中国科学院成都有机化学研究所成都 610041
  2.中国科学院大学北京 101400
- 作者简介：
  
  Wei Bai, E-mail: baiwei@cioc.ac.cn
- 基金信息：
- DOI：10.11777/j.issn1000-3304.2025.25049
  CLC：
- CSTR：32057.14.GFZXB.2025.7406
- Received：25 February 2025，
  
  Accepted：29 April 2025，
  
  Published Online：01 July 2025，
  
  Published：20 August 2025
- 稿件说明：
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蒋琴瑶, 张远康, 白威, 李晨, 王庆印, 王公应. 聚2,2'-双(2-羟基乙氧基)-1,1'-联萘碳酸酯的合成及其光学性能研究. 高分子学报, 2025, 56(8), 1405-1415

Jiang, Q. Y.; Zhang, Y. K.; Bai, W.; Li, C.; Wang, Q. Y.; Wang, G. Y. Synthesis and optical properties of poly(2,2'-bis(2-hydroxyethoxy)‍-1,1'-binaphthyl carbonate). Acta Polymerica Sinica, 2025, 56(8), 1405-1415
蒋琴瑶, 张远康, 白威, 李晨, 王庆印, 王公应. 聚2,2'-双(2-羟基乙氧基)-1,1'-联萘碳酸酯的合成及其光学性能研究. 高分子学报, 2025, 56(8), 1405-1415 DOI： 10.11777/j.issn1000-3304.2025.25049. CSTR： 32057.14.GFZXB.2025.7406.

Jiang, Q. Y.; Zhang, Y. K.; Bai, W.; Li, C.; Wang, Q. Y.; Wang, G. Y. Synthesis and optical properties of poly(2,2'-bis(2-hydroxyethoxy)‍-1,1'-binaphthyl carbonate). Acta Polymerica Sinica, 2025, 56(8), 1405-1415 DOI： 10.11777/j.issn1000-3304.2025.25049. CSTR： 32057.14.GFZXB.2025.7406.

摘要

报道研究了高折射率光学级聚2

2'-双(2-羟基乙氧基)-1

1'-联萘碳酸酯(BHEBN-PC)的合成及其性能.通过熔融酯交换法，以碳酸二苯酯(DPC)和BHEBN为原料，制备了BHEBN-PC共聚物，并对其化学结构、分子量、热性能、疏水性能和光学性能进行了表征. 研究发现，BHEBN单体具有较高的反应活性，通过优化催化剂种类(KF/MgO)、用量(0.05 wt%)、酯交换时间(45 min)和缩聚温度(210 ℃)等工艺条件，成功合成了高分子量的BHEBN-PC (

=6.40×10

g/mol，

=1.05×10

g/mol，分散性指数PDI=1.63). BHEBN-PC表现出优异的光学性能，折射率

=1.656，透光率为88.54%，雾度为1.18%，且具有良好的热稳定性(

=124 ℃，

=350 ℃，

max

=393 ℃)和疏水性(水接触角为98.85°). 因此，BHEBN-PC的合成为高性能光学材料的开发提供了新思路和可能性.

Abstract

Polycarbonates (PCs) are widely applied in various fields due to their excellent thermomechanical properties

optical performance

processability

and electrical insulation. However

the relatively low refractive index (

=1.585) of conventional PC restricts its application in high-end optical devices. In this study

we synthesized the 2

‍2'-bis(2-hydroxyethoxy)‍-1

‍1'-binaphthyl (BHEBN) monomer. Subsequently

BHEBN-PC homopolymer was successfully prepared via melt transesterification using BHEBN and diphenyl carbonate (DPC) as comonomers. The molecular weight and distribution of BHEBN-PC were analyzed by gel permeation chromatography (GPC)

with systematic investigations into the effects of catalyst type

catalyst loading

transesterification temperature and duration

polycondensation temperature and time

and monomer feed ratio (

DPC

BHEBN

). Under optimized conditions (catalyst: KF/MgO

catalyst loading: 0.05 wt%

transesterification time: 45 min

polycondensation temperature: 210 ℃

monomer molar ratio:

DPC

BHEBN

= 1.0)

high-molecular-weight BHEBN-PC was synthesized with

= 6.40×10

g/mol

= 1.05×10

g/mol

and polydispersity index (PDI) = 1.63. The chemical structure of BHEBN-PC was confirmed by Fourier transform infrared spectroscopy (FTIR)

nuclear magnetic resonance (

H-NMR

C-NMR). Thermal properties were evaluated using differential scanning calorimetry (DSC) and thermogravimetric analysis (TGA)

revealing a glass transition temperature (

) of 124 ℃

5% weight loss temperature (

) of 350 ℃

and maximum decomposition temperature (

max

) of 393 ℃. Hydrophobicity and optical performance were characterized

via

contact angle measurements

transmittance/haze tests

and Abbe refractometry. The BHEBN-PC copolymer exhibited exceptional optical properties

including a refractive index (

) of 1.656

transmittance of 88.540%

haze of 1.180%

and remarkable hydrophobicity (water contact angle: 98.85°). These results demonstrate that BHEBN-PC offers novel insights and potential for developing advanced optical materials.

关键词

Keywords

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