Electric‐Field‐Mediated Electron Tunneling of Supramolecular Naphthalimide Nanostructures for Biomimetic H2 Production.
- Resource Type
- Article
- Authors
- Lin, Huan; Ma, Zhiyun; Zhao, Jiwu; Liu, Yang; Chen, Jinquan; Wang, Junhui; Wu, Kaifeng; Jia, Huaping; Zhang, Xuming; Cao, Xinhua; Wang, Xuxu; Fu, Xianzhi; Long, Jinlin
- Source
- Angewandte Chemie. 1/18/2021, Vol. 133 Issue 3, p1255-1263. 9p.
- Subject
- *NANOSTRUCTURES
*HOT carriers
*QUANTUM efficiency
*ELECTRIC fields
*VISIBLE spectra
- Language
- ISSN
- 0044-8249
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 H2 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 6.10×108 s−1, which is five times larger than the BENI‐NH3+ nanoribbons (1.17×108 s−1). The electric field benefited significantly the electron tunneling dynamics and compensated the charge‐separated states insufficient in the BENI‐COO− nanofibers. [ABSTRACT FROM AUTHOR]