A photofunctional bottom-up bis(dipyrrinato)zinc(II) complex nanosheet

Ryota Sakamoto (), Ken Hoshiko, Qian Liu, Toshiki Yagi, Tatsuhiro Nagayama, Shinpei Kusaka, Mizuho Tsuchiya, Yasutaka Kitagawa, Wai-Yeung Wong () and Hiroshi Nishihara ()
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Ryota Sakamoto: Graduate School of Science, The University of Tokyo
Ken Hoshiko: Graduate School of Science, The University of Tokyo
Qian Liu: Institute of Molecular Functional Materials, Hong Kong Baptist University
Toshiki Yagi: Graduate School of Science, The University of Tokyo
Tatsuhiro Nagayama: Graduate School of Science, The University of Tokyo
Shinpei Kusaka: Graduate School of Science, The University of Tokyo
Mizuho Tsuchiya: Graduate School of Science, The University of Tokyo
Yasutaka Kitagawa: Graduate School of Engineering Science, Osaka University
Wai-Yeung Wong: Institute of Molecular Functional Materials, Hong Kong Baptist University
Hiroshi Nishihara: Graduate School of Science, The University of Tokyo

Nature Communications, 2015, vol. 6, issue 1, 1-9

Abstract: Abstract Two-dimensional polymeric nanosheets have recently gained much attention, particularly top-down nanosheets such as graphene and metal chalcogenides originating from bulk-layered mother materials. Although molecule-based bottom-up nanosheets manufactured directly from molecular components can exhibit greater structural diversity than top-down nanosheets, the bottom-up nanosheets reported thus far lack useful functionalities. Here we show the design and synthesis of a bottom-up nanosheet featuring a photoactive bis(dipyrrinato)zinc(II) complex motif. A liquid/liquid interfacial synthesis between a three-way dipyrrin ligand and zinc(II) ions results in a multi-layer nanosheet, whereas an air/liquid interfacial reaction produces a single-layer or few-layer nanosheet with domain sizes of >10 μm on one side. The bis(dipyrrinato)zinc(II) metal complex nanosheet is easy to deposit on various substrates using the Langmuir–Schäfer process. The nanosheet deposited on a transparent SnO2 electrode functions as a photoanode in a photoelectric conversion system, and is thus the first photofunctional bottom-up nanosheet.

Date: 2015
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DOI: 10.1038/ncomms7713

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