Jin, Hyunjung Kim, Kyuyeon Park, Sungmin Rhee, JinHyeong Ahn, Hyungju Kim, Dong Jun Kim, Kyeongmin Noh, Jun Hong Kim, Taek-Soo Shin, Eul-Yong Son, Hae Jung 2024-01-19T08:31:03Z 2024-01-19T08:31:03Z 2023-08-17 2023-11 1616-301X https://pubs.kist.re.kr/handle/201004/113159 Recyclable conjugated polymers are important for realizing eco-friendly electronics with advantages of solution processability and flexibility. A recyclable conjugated polymer, PY-TIP is developed, of which a key monomer is successfully extracted via a mild depolymerization process and is reused for the synthesis of novel conjugated polymers. One-shot preparation of polymer acceptor and its bulk-heterojunction (BHJ) is demonstrated from the recycled monomer, Y5-TA, for the first time and the resulting BHJ film shows optimal nanoscale morphology for efficient charge generation and transport. As a result, the solar cells prepared using the BHJ film show a higher efficiency of 13.08% and much improved thermal and mechanical stability compared with those based on the small molecular acceptor. These results are important in that the various polymers can be prepared from the recycled monomer in a solid state without organic solvents and purification step and this strategy is effective for improving the thermal and mechanical stability of the BHJ film as well as achieving high photovoltaic performance. PY-TIP is exemplary in that it can reproduce its monomer which can be used to synthesize conjugated polymers with novel chemical structures and physical properties. This work provides a design guideline for developing recyclable conjugated polymers with dynamic covalent bonds. English John Wiley & Sons Ltd. Chemically Recyclable Conjugated Polymer and One-Shot Preparation of Thermally Stable and Efficient Bulk-Heterojunction from Recycled Monomer Article 10.1002/adfm.202304930 1 Advanced Functional Materials, v.33, no.47 Advanced Functional Materials 33 47 N scie scopus 001029289100001 2-s2.0-85164832257 Chemistry, Multidisciplinary Chemistry, Physical Nanoscience & Nanotechnology Materials Science, Multidisciplinary Physics, Applied Physics, Condensed Matter Chemistry Science & Technology - Other Topics Materials Science Physics Article PLASTICS bulk-heterojunction morphological thermal stability one-shot preparation organic photovoltaics recyclable conjugated molecules