Research
Research
Embedded Files
My research interests mainly focus on the synthesis, properties, and material applications of sulfur-containing polymers.
*All topics below are based on the published results.
My research interests mainly focus on the synthesis, properties, and material applications of sulfur-containing polymers.
*All topics below are based on the published results.
High Refractive Index Polymers
High Refractive Index Polymers
High refractive index polymers (HRIPs) are essential for realizing light-weight, miniaturized, and robust optical materials/devices toward cutting-edge technologies and efficient light-energy conversion.
High refractive index polymers (HRIPs) are essential for realizing light-weight, miniaturized, and robust optical materials/devices toward cutting-edge technologies and efficient light-energy conversion.
We have developed various HRIPs, starting from poly(phenylene sulfide) (PPS) derivatives with functional side chains. In particular, a series of hydrogen-bondable PPS derivatives achieved unprecedented ultrahigh RI over 1.8. This strategy is widely applicable to other HRIP families, such as poly(dithioacetal)s and poly(thiourea)s. We also focus on multi-functionalization of HRIPs, affording additional features such as light-outcoupling ability and chemical recyclability.
We have developed various HRIPs, starting from poly(phenylene sulfide) (PPS) derivatives with functional side chains. In particular, a series of hydrogen-bondable PPS derivatives achieved unprecedented ultrahigh RI over 1.8. This strategy is widely applicable to other HRIP families, such as poly(dithioacetal)s and poly(thiourea)s. We also focus on multi-functionalization of HRIPs, affording additional features such as light-outcoupling ability and chemical recyclability.
Representative publications:
[1] Macromolecules 2022, 55, 2252-2259.
[2] Adv. Funct. Mater. 2024, 34, 2404433.
(Press release: 日本語 English)
[3] ChemSusChem 2025, 18, e202401609.
[4] J. Mater. Chem. C 2025, 13, 7933.
Low Dielectric Loss Polymers
Low Dielectric Loss Polymers
Insulating polymers are high-demand functional materials for reliable, high-speed, and large-data communications, as represented by post-5G and 6G systems. Unlike conventional molecular designs, we demonstrate sulfur-containing polymers as promising insulating materials with minimized dielectric loss.
Insulating polymers are high-demand functional materials for reliable, high-speed, and large-data communications, as represented by post-5G and 6G systems. Unlike conventional molecular designs, we demonstrate sulfur-containing polymers as promising insulating materials with minimized dielectric loss.
Representative publications:
[1] Commun. Mater. 2025, 6, 181.
(Press release: 日本語 English)
[2] Polymer 2025, 338, 129095.
Representative publications:
[1] Commun. Mater. 2025, 6, 181.
(Press release: 日本語 English)
[2] Polymer 2025, 338, 129095.
Post-polymerization Modification
Post-polymerization Modification
Leveraging the diverse reactivity of sulfur-containing polymers, we are developing simple and precise post-polymerization modification methods to realize polymer materials with tunable functionalities. In particular, post-polymerization modification of PPS derivatives, such as (1) main-chain oxidation, (2) side-chain transformation, (3) interchain S-S bond exchange reaction, and (4) end-functionalization, enables precise tuning of thermal, optical, and interfacial properties.
Leveraging the diverse reactivity of sulfur-containing polymers, we are developing simple and precise post-polymerization modification methods to realize polymer materials with tunable functionalities. In particular, post-polymerization modification of PPS derivatives, such as (1) main-chain oxidation, (2) side-chain transformation, (3) interchain S-S bond exchange reaction, and (4) end-functionalization, enables precise tuning of thermal, optical, and interfacial properties.
Representative publications:
[1] Polym. Chem. 2022, 13, 1705-1711.
[2] RSC Adv. 2023, 13, 32363-32370.
[3] Macromolecules 2024, 57, 2897-2904.
Polymer-Inorganic Hybrid Materials
Polymer-Inorganic Hybrid Materials
To functionalize various sulfur-containing polymers, their hybridization with other materials is promising. We have developed novel PPS derivatives compatible with other materials (e.g., inorganic nanoparticles), enabling nano-scale hybridization toward better material properties.
To functionalize various sulfur-containing polymers, their hybridization with other materials is promising. We have developed novel PPS derivatives compatible with other materials (e.g., inorganic nanoparticles), enabling nano-scale hybridization toward better material properties.
Representative publications:
[1] Bull. Chem. Soc. Jpn. 2020, 93, 1287-1292.
[2] ACS Appl. Polym. Mater. 2021, 3, 4495–4503.
Other links
Other links
Page updated
Google Sites
Report abuse