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Facile one-pot synthesis of rod-coil bio-block copolymers and uncovering their role in forming the efficient stretchable touch-responsive light emitting diodes

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Title: Facile one-pot synthesis of rod-coil bio-block copolymers and uncovering their role in forming the efficient stretchable touch-responsive light emitting diodes
Authors: Jiang, Dai-Hua Browse this author
Ree, Brian J. Browse this author
Isono, Takuya Browse this author
Xia, Xiao-Chao Browse this author
Hsu, Li-Che Browse this author
Kobayashi, Saburo Browse this author
Ngoi, Kuan Hoon Browse this author
Chen, Wei-Cheng Browse this author
Jao, Chih-Chun Browse this author
Veeramuthu, Loganathan Browse this author
Satoh, Toshifumi Browse this author →KAKEN DB
Tung, Shih Huang Browse this author
Kuo, Chi-Ching Browse this author
Keywords: Polyfluorene
Rod-coil conjugated block copolymer
Smart synthesis
Light-emitting diode
Flexible wearable device
Issue Date: 15-Aug-2021
Publisher: Elsevier
Journal Title: Chemical engineering journal
Volume: 418
Start Page: 129421
Publisher DOI: 10.1016/j.cej.2021.129421
Abstract: Bio-derived optoelectronic material is captivating and sustainable research as it reduces the environmental toxicity and comforting the wearable aspects. Our research involves the synthesis of series of bio-derived polyfluorene-block-poly(delta-decanolactone) (PF-b-PDL) conjugated block copolymers through smart one-pot procedure that involves simple purification for fabricating touch-responsive light-emitting diode (LED) devices. Compared with PF homopolymer, the block copolymers exhibit higher photoluminescence quantum yields and higher exciton binding energies. PF18-b-PDL13 specifically exhibits external quantum efficiency (EQE %) (similar to 6 times higher than PF homopolymer). Moreover, because of coily PDL block inducing a highly stable bound state in block copolymer generating the increment in PL lifetime and exciton binding energies than the homopolymer. Furthermore, the diblock copolymers device exhibits fully solution processability, higher carrier recombination efficiency, flex-stretch stability, good structural integrity and mechanical endurance highlighting the brighter potential of our bio-derived block copolymers for fabricating highly durable wearable stretchable nano and microelectronic devices.
Rights: ©2021. This manuscript version is made available under the CC-BY-NC-ND 4.0 license
Type: article (author version)
Appears in Collections:工学院・工学研究院 (Graduate School of Engineering / Faculty of Engineering) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 佐藤 敏文

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