Electric-Field-Mediated Electron Tunneling of Supramolecular Naphthalimide Nanostructures for Biomimetic H2 Production
Electric-Field-Mediated Electron Tunneling of Supramolecular Naphthalimide Nanostructures for Biomimetic H2 Production
复制标题
用于仿生 H-2 生产的超分子萘酰亚胺纳米结构的电场介导电子隧道
DOI：
10.1002/anie.202009267
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发表时间：
2020-11-13
影响因子：
16.6
通讯作者：
Long, Jinlin
中科院分区：
文献类型：
--
作者：
Lin, Huan;Ma, Zhiyun;Long, Jinlin
The design and synthesis of two semiconducting bis (4-ethynyl-bridging 1, 8-naphthalimide) bolaamphiphiles (BENI-COO- and BENI-NH3+) to fabricate supramolecular metal-insulator-semiconductor (MIS) nanostructures for biomimetic hydrogen evolution under visible light irradiation is presented. A H-2 evolution rate of ca. 3.12 mmol g(-1).h(-1) and an apparent quantum efficiency (AQE) of ca. 1.63 % at 400 nm were achieved over the BENI-COO--NH3+-Ni MIS photosystem prepared by electrostatic self-assembly of BENI-COO- with the opposite-charged DuBois-Ni catalysts. The hot electrons of photoexcited BENI-COO- nanofibers were tunneled to the molecular Ni collectors across a salt bridge and an alkyl region of 2.2-2.5 nm length at a rate of 6.10x10(8) s(-1), which is five times larger than the BENI-NH3+ nanoribbons (1.17x10(8) s(-1)). The electric field benefited significantly the electron tunneling dynamics and compensated the charge-separated states insufficient in the BENI-COO- nanofibers.
