Design, synthesis and characterization of high refractive index aromatic polyesters containing fluorene and thioether groups
Zihao Wu,
Jian Wang,
Jingwei Jiang
et al.
Abstract:9,9-bis(4-hydroxyphenyl)fluorene (BPF) is a highly structurally symmetric bisphenol with excellent optical properties of low birefringence and high refractive index, however, the glass transition temperature ( Tg) of its polyester is high ( Tg>300°C), which makes it difficult to be thermally processed and limits its application. On the other hand, 4,4′-Thiobis (2-methylphenol) (T2MP) has a flexible thioether group, its introduction not only brings high refractive index, but also can appropriately reduce the… Show more
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