TY - JOUR
T1 - Highly Refractive Aromatic Polybenzoxazoles Derived from Sulfur-Containing Dibenzoyl Chlorides
AU - Kim, Hyeonil
AU - Yeo, Hyeonuk
AU - Ko, Heung Cho
AU - You, Nam Ho
N1 - Publisher Copyright:
© 2021 American Chemical Society.
PY - 2021/10/8
Y1 - 2021/10/8
N2 - A series of aromatic polybenzoxazoles (PBOs) containing sulfur atoms in their main chains were developed. All of the PBOs were prepared from synthesized hydroxyl-diamine 4,4′-bis(4-amino-3-hydroxyphenylthio)diphenylsulfide (3SDA) and aromatic diacyl chlorides, such as 4,4′-((thiobis(4,1-phenylene))bis(sulfanediyl))dibenzoyl chloride (3SDBC), trans-1,4-cyclohexanedicarbonyl dichloride (trans-CHDC), isophthaloyl dichloride (IPC), and 4,4′-oxybis(benzoyl chloride) (OBC), via a conventional two-step procedure. The PBOs exhibited high thermal stability, thermal decomposition temperature (>430 °C), and glass-transition temperature (204-255 °C). The PBO derived from 3SDA and 3SDBC exhibited a very high refractive index, i.e., 1.7862 at 637 nm due to the high sulfur content (21.79%).
AB - A series of aromatic polybenzoxazoles (PBOs) containing sulfur atoms in their main chains were developed. All of the PBOs were prepared from synthesized hydroxyl-diamine 4,4′-bis(4-amino-3-hydroxyphenylthio)diphenylsulfide (3SDA) and aromatic diacyl chlorides, such as 4,4′-((thiobis(4,1-phenylene))bis(sulfanediyl))dibenzoyl chloride (3SDBC), trans-1,4-cyclohexanedicarbonyl dichloride (trans-CHDC), isophthaloyl dichloride (IPC), and 4,4′-oxybis(benzoyl chloride) (OBC), via a conventional two-step procedure. The PBOs exhibited high thermal stability, thermal decomposition temperature (>430 °C), and glass-transition temperature (204-255 °C). The PBO derived from 3SDA and 3SDBC exhibited a very high refractive index, i.e., 1.7862 at 637 nm due to the high sulfur content (21.79%).
KW - high refractive index
KW - optical properties
KW - poly(benzoxazole)
KW - polyimide
KW - polymer optics
UR - http://www.scopus.com/inward/record.url?scp=85116235547&partnerID=8YFLogxK
U2 - 10.1021/acsapm.1c00694
DO - 10.1021/acsapm.1c00694
M3 - Article
AN - SCOPUS:85116235547
SN - 2637-6105
VL - 3
SP - 4932
EP - 4939
JO - ACS Applied Polymer Materials
JF - ACS Applied Polymer Materials
IS - 10
ER -