@article{ART003273800},
author={Chaehun Lim and Seongjae Myeong and Sangyeop Lee and Seongmin Ha and Young‑Seak Lee},
title={Controlling the softening point of mesophase pitch via edge-selective fluorination},
journal={Carbon Letters},
issn={1976-4251},
year={2025},
volume={35},
number={5},
pages={2021-2027},
doi={10.1007/s42823-025-00947-x}
TY - JOUR
AU - Chaehun Lim
AU - Seongjae Myeong
AU - Sangyeop Lee
AU - Seongmin Ha
AU - Young‑Seak Lee
TI - Controlling the softening point of mesophase pitch via edge-selective fluorination
JO - Carbon Letters
PY - 2025
VL - 35
IS - 5
PB - Korean Carbon Society
SP - 2021
EP - 2027
SN - 1976-4251
AB - Modifying the softening point (SP) of pitch is crucial owing to its substantial influence on pitch applicability. This study presents a novel fluorination technique for engineering the SP of mesophase pitch (MP). Low-concentration fluorine gas was used to modify the edge sites of the MP, allowing for either an increase or decrease in the SP by controlling the gas reactivity. The fluorination was conducted with 20 vol% F2 gas under reaction temperature of 25, 50, and 75 ℃ for 2 h in atmospheric pressure. A reduction in SP was achieved through edge alkylation, with a decrease of up to 14.1% observed after the fluorination. Conversely, an increase in SP resulted from edge dealkylation at higher reaction temperatures. As the modified MPs retained perfect anisotropy, this study offers an effective strategy for adjusting the SP to meet application needs without causing structural deterioration.
KW - Mesophase pitch;Fluorination;Softening point;Surface treatment
DO - 10.1007/s42823-025-00947-x
ER -
Chaehun Lim, Seongjae Myeong, Sangyeop Lee, Seongmin Ha and Young‑Seak Lee. (2025). Controlling the softening point of mesophase pitch via edge-selective fluorination. Carbon Letters, 35(5), 2021-2027.
Chaehun Lim, Seongjae Myeong, Sangyeop Lee, Seongmin Ha and Young‑Seak Lee. 2025, "Controlling the softening point of mesophase pitch via edge-selective fluorination", Carbon Letters, vol.35, no.5 pp.2021-2027. Available from: doi:10.1007/s42823-025-00947-x
Chaehun Lim, Seongjae Myeong, Sangyeop Lee, Seongmin Ha, Young‑Seak Lee "Controlling the softening point of mesophase pitch via edge-selective fluorination" Carbon Letters 35.5 pp.2021-2027 (2025) : 2021.
Chaehun Lim, Seongjae Myeong, Sangyeop Lee, Seongmin Ha, Young‑Seak Lee. Controlling the softening point of mesophase pitch via edge-selective fluorination. 2025; 35(5), 2021-2027. Available from: doi:10.1007/s42823-025-00947-x
Chaehun Lim, Seongjae Myeong, Sangyeop Lee, Seongmin Ha and Young‑Seak Lee. "Controlling the softening point of mesophase pitch via edge-selective fluorination" Carbon Letters 35, no.5 (2025) : 2021-2027.doi: 10.1007/s42823-025-00947-x
Chaehun Lim; Seongjae Myeong; Sangyeop Lee; Seongmin Ha; Young‑Seak Lee. Controlling the softening point of mesophase pitch via edge-selective fluorination. Carbon Letters, 35(5), 2021-2027. doi: 10.1007/s42823-025-00947-x
Chaehun Lim; Seongjae Myeong; Sangyeop Lee; Seongmin Ha; Young‑Seak Lee. Controlling the softening point of mesophase pitch via edge-selective fluorination. Carbon Letters. 2025; 35(5) 2021-2027. doi: 10.1007/s42823-025-00947-x
Chaehun Lim, Seongjae Myeong, Sangyeop Lee, Seongmin Ha, Young‑Seak Lee. Controlling the softening point of mesophase pitch via edge-selective fluorination. 2025; 35(5), 2021-2027. Available from: doi:10.1007/s42823-025-00947-x
Chaehun Lim, Seongjae Myeong, Sangyeop Lee, Seongmin Ha and Young‑Seak Lee. "Controlling the softening point of mesophase pitch via edge-selective fluorination" Carbon Letters 35, no.5 (2025) : 2021-2027.doi: 10.1007/s42823-025-00947-x
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