Issue 9, 2012

Synthesis of highly refractive poly(phenylene thioether)s containing a binaphthyl or diphenylfluorene unit

Abstract

High refractive index poly(phenylene thioether)s (PPTs) with good solubilities were developed by introducing binaphthyl or diphenylfluorene units. They were prepared by the polycondensation of dithiols, 2,7-thianthrenedithiol and 9,9-bis(4-sulfanylphenyl)fluorene, with difluoro compounds, 4,4′-difluoro-1,1′-binaphthyl and 2,7-difluorothianthrene. The bulky and non-planar structures of the PPTs endow good solubilities in several organic solvents, such as 1,1,2,2-tetrachloroethane (TCE), N-methylpyrrolidone (NMP), and N,N′-dimethylpropyleneurea (DMPU). They exhibit a high thermal stability, that is, 5% weight loss temperatures of 483 and 494 °C under nitrogen, and glass transition temperatures of 235 and 237 °C, respectively, reflecting the rigid structures of the diphenylfluorene or binaphthyl unit. They also exhibit a good transparency in the visible region (transmittance > 85% at 400 nm) and high refractive indices of 1.776 and 1.737, and low birefringences of 0.0049 and 0.0035, respectively. The PPTs with a high thermal stability and good optical properties should be good candidates for optical applications.

Graphical abstract: Synthesis of highly refractive poly(phenylene thioether)s containing a binaphthyl or diphenylfluorene unit

Supplementary files

Article information

Article type
Paper
Submitted
10 May 2012
Accepted
14 Jun 2012
First published
27 Jun 2012

Polym. Chem., 2012,3, 2531-2536

Synthesis of highly refractive poly(phenylene thioether)s containing a binaphthyl or diphenylfluorene unit

Y. Nakagawa, Y. Suzuki, T. Higashihara, S. Ando and M. Ueda, Polym. Chem., 2012, 3, 2531 DOI: 10.1039/C2PY20325A

To request permission to reproduce material from this article, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Read more about how to correctly acknowledge RSC content.

Social activity

Spotlight

Advertisements