Unveiling the Potential of Biobased Bifuran unit in Conjugated Polymers: Synthesis, Thermal Properties, Photophysics, and Comparative Study with Phenylene and Thiophene Analogues for OLED Applications
5 affiliations
- 1Graduate School of Science and Technology, Gunma University, 1-5-1 Tenjin, Kiryu, Gunma, Japan, 376-8515
- 2Osaka Institute of Technology, 5-16-1 Omiya, Asahi-ku, Osaka, Japan, 535-8585
- 3Industrial Technology Center of Wakayama Prefecture, 60 Ogura, Wakayama, Japan, 649-6261
- 4Graduate School of Food and Population Health Sciences, Gunma University, 1-5-1 Tenjin, Kiryu, Gunma, Japan, 376-8515
- 5Gunma University Center for Food Science and Wellness, 4-2 Aramaki, Maebashi, Gunma, Japan, 371-8510
Abstract
The bifuran unit is an attractive biobased building block for organic electronics, however its potential in electroluminescent devices has not been explored. In this study, a series of bifuranbased conjugated polymers, PBFAr1–PBFAr9, was synthesized via Suzuki–Miyaura polycondensation to evaluate the effect of the bifuran unit on thermal, photophysical, and electrochemical properties. For comparison, analogous polymers containing phenylene (PSPhAr1), biphenyl (PBPhAr1), and bithiophene (PBTAr1) units were also synthesized. Characterization showed that the bifuran-containing polymers exhibit varied thermal stability, emission in both solution and the solid state. Specifically, the photoluminescence quantum yield of chloroform solution of PBFAr1 was 43%, which was higher than the 39% observed for the bithiophene-based analogue, PBTAr1. Kelvin probe measurements indicated an energy-level alignment with the ITO anode that may facilitate hole injection. Solution-processed OLEDs with an ITO/PEDOT:PSS/emissive polymer/LiF/Al architecture were fabricated, and the PBFAr1-based device exhibited bright cyan electroluminescence at 484 nm. These results suggest that bifuranbased conjugated polymers have potential as emissive and p-type semiconducting materials for organic optoelectronic applications.
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BibTeX
@misc{gupta2026unveiling,
title = {{Unveiling the Potential of Biobased Bifuran unit in Conjugated Polymers: Synthesis, Thermal Properties, Photophysics, and Comparative Study with Phenylene and Thiophene Analogues for OLED Applications}},
author = {Shekhar Gupta and Yuya Tanaka and Nobuya Hiroshiba and Takeshi Mori and Hitoshi Saomoto and Ryusei Makiko and Akiko Takemaki and Ryu Kumagai and Itaru Hamachi and Yuya Tachibana},
howpublished = {ChemRxiv},
year = {2026},
month = sep,
doi = {10.26434/chemrxiv.15008557/v1},
url = {https://chemrxiv.org/doi/full/10.26434/chemrxiv.15008557/v1},
note = {CC BY},
}
RIS
TY - UNPB
TI - Unveiling the Potential of Biobased Bifuran unit in Conjugated Polymers: Synthesis, Thermal Properties, Photophysics, and Comparative Study with Phenylene and Thiophene Analogues for OLED Applications
AU - Shekhar Gupta
AU - Yuya Tanaka
AU - Nobuya Hiroshiba
AU - Takeshi Mori
AU - Hitoshi Saomoto
AU - Ryusei Makiko
AU - Akiko Takemaki
AU - Ryu Kumagai
AU - Itaru Hamachi
AU - Yuya Tachibana
PY - 2026
DA - 2026/09/09
PB - ChemRxiv
DO - 10.26434/chemrxiv.15008557/v1
UR - https://chemrxiv.org/doi/full/10.26434/chemrxiv.15008557/v1
AB - The bifuran unit is an attractive biobased building block for organic electronics, however its potential in electroluminescent devices has not been explored. In this study, a series of bifuranbased conjugated polymers, PBFAr1–PBFAr9, was synthesized via Suzuki–Miyaura polycondensation to evaluate the effect of the bifuran unit on thermal, photophysical, and electrochemical properties. For comparison, analogous polymers containing phenylene (PSPhAr1), biphenyl (PBPhAr1), and bithiophene (PBTAr1) units were also synthesized. Characterization showed that the bifuran-containing polymers exhibit varied thermal stability, emission in both solution and the solid state. Specifically, the photoluminescence quantum yield of chloroform solution of PBFAr1 was 43%, which was higher than the 39% observed for the bithiophene-based analogue, PBTAr1. Kelvin probe measurements indicated an energy-level alignment with the ITO anode that may facilitate hole injection. Solution-processed OLEDs with an ITO/PEDOT:PSS/emissive polymer/LiF/Al architecture were fabricated, and the PBFAr1-based device exhibited bright cyan electroluminescence at 484 nm. These results suggest that bifuranbased conjugated polymers have potential as emissive and p-type semiconducting materials for organic optoelectronic applications.
ER -