| 학회 |
한국고분자학회 |
| 학술대회 |
2022년 봄 (04/06 ~ 04/08, 대전컨벤션센터) |
| 권호 |
47권 1호 |
| 발표분야 |
Virtual Lightning Session |
| 제목 |
Bicyclic Nitroxyl Mediated Biopolymer Degradation Under Mild Conditions |
| 초록 |
Lignin represents a potential feedstock suitable to produce a high value-added substance, which used in the fields of monomer production, fine chemistry, and pharmaceuticals. This work reports the selective photocatalytic oxidation of lignin model compounds in organic dye-sensitized photoelectrochemical cells (ODSPECs) coupling with hydrogen atom transfer agents (HATs) co-catalyst. An organic dye 5-[4-(diphenylamino)phenyl]thiophene-2-cyanoacrylic acid (DN-F02) containing triphenylamine (TPA) donor as a photocatalyst was immobilized on mesoporous-TiO2 coated fluorine-doped tin oxide glass substrates (DN-F02/meso-TiO2/FTO). Photocatalytic oxidation of lignin decomposition at DN-F02/meso-TiO2/FTO photoanode was carried out in the presence of bicyclic nitroxyl co-catalyst (9-azabicyclo[3,3,1]nonan-3-one-9-oxyl, ABNO). This photoelectrocatalytic process with the ODSPECs incorporating a ABNO mediator was evaluated with a phenolic lignin model compound (LMC) under 1 sun illumination. Moreover, chemoselective fragmentation of CAryl─Cα bond in the LMC was observed at room temperature under the 1 sun illumination and characterized by 1H NMR, GC-FID, and GC-MS. This system can offer a unique strategy to perform selective C─O/C─O bond cleavage for real biopolymer or petroleum-based polymer degradation under mild conditions. |
| 저자 |
Saerona Kim1, Hyeong Cheol Kang2, Shuya Li1, Kicheon Yoo2, Jae Joon Lee2, Gyu Leem3
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| 소속 |
1State Univ. of New York, 2Dongguk Univ., 3State Univ. of New York/The Michael M. Szwarc Polymer Research Institute |
| 키워드 |
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| E-Mail |
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