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Seo G, Hayakawa R, Wakayama Y, Ohnuki R, Yoshioka S, Kanai K. Mechanism of charge accumulation in potassium poly(heptazine imide). Phys Chem Chem Phys 2024. [PMID: 39037326 DOI: 10.1039/d4cp02012j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/23/2024]
Abstract
Dark photocatalysis is the ability of a photocatalyst to accumulate photocarriers during light irradiation and consume them for redox reactions under dark conditions. This phenomenon of photocatalysts storing photocarriers is known as charge accumulation. Dark photocatalysts can mitigate fluctuations in photocatalytic reaction efficiency in response to fluctuating solar irradiation. Potassium poly(heptazine imide) (K-PHI) has attracted considerable attention due to its high photocatalytic efficiency and ability to undergo dark photocatalysis. However, the detailed mechanism of charge accumulation in K-PHI remains unclear because photochromism, potassium ion desorption, and charge accumulation occur simultaneously triggered by light irradiation, limiting the comprehensive understanding of this mechanism. To elucidate the charge accumulation mechanism in K-PHI, highly oriented K-PHI thin films were prepared. Then, their fundamental physical properties and optical response of their electrical properties were investigated. We succeeded in separately observing photochromism, potassium ion desorption, and charge accumulation induced by light irradiation on K-PHI and proposed a comprehensive model to explain these phenomena. This study not only provides insights into the unique physical phenomena exhibited by K-PHI but also contributes to the development of solar energy-storage materials in the future.
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Affiliation(s)
- Goichiro Seo
- Department of Physics and Astronomy, Faculty of Science and Technology, Tokyo University of Science, 2641 Yamazaki, Noda, Chiba 278-8510, Japan.
| | - Ryoma Hayakawa
- Research Center for Materials Nano architectonics (MANA), National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba, Ibaraki 305-0044, Japan
| | - Yutaka Wakayama
- Research Center for Materials Nano architectonics (MANA), National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba, Ibaraki 305-0044, Japan
| | - Ryosuke Ohnuki
- Department of Physics and Astronomy, Faculty of Science and Technology, Tokyo University of Science, 2641 Yamazaki, Noda, Chiba 278-8510, Japan.
| | - Shinya Yoshioka
- Department of Physics and Astronomy, Faculty of Science and Technology, Tokyo University of Science, 2641 Yamazaki, Noda, Chiba 278-8510, Japan.
| | - Kaname Kanai
- Department of Physics and Astronomy, Faculty of Science and Technology, Tokyo University of Science, 2641 Yamazaki, Noda, Chiba 278-8510, Japan.
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Wang ML, Zhang GP, Fu XX, Wang CK. Low-bias conductance mechanism of diarylethene isomers: A first-principle study. CHINESE J CHEM PHYS 2020. [DOI: 10.1063/1674-0068/cjcp1911204] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Affiliation(s)
- Ming-lang Wang
- School of Physics and Electronics, Shandong Normal University, Jinan 250358, China
| | - Guang-ping Zhang
- School of Physics and Electronics, Shandong Normal University, Jinan 250358, China
| | - Xiao-xiao Fu
- School of Physics and Electronics, Shandong Normal University, Jinan 250358, China
| | - Chuan-kui Wang
- School of Physics and Electronics, Shandong Normal University, Jinan 250358, China
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Seo K, Eom I, Shim S, Kim CH, Joo T. Ring Closure Reaction Pathway of a Diarylethene in Solution Using Femtosecond Time‐resolved Fluorescence Spectra. B KOREAN CHEM SOC 2019. [DOI: 10.1002/bkcs.11689] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Kiho Seo
- Department of ChemistryPohang University of Science and Technology (POSTECH) Pohang 37673 South Korea
| | - Intae Eom
- Pohang Accelerator Laboratory Pohang 37673 South Korea
| | - Sangdeok Shim
- Department of ChemistrySunchon National University Sunchon 57922 South Korea
| | - Chul Hoon Kim
- Department of Advanced Materials ChemistryKorea University Sejong 30019 South Korea
| | - Taiha Joo
- Department of ChemistryPohang University of Science and Technology (POSTECH) Pohang 37673 South Korea
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Snegir S, Khodko A, Sysoiev D, Lacaze E, Pluchery O, Huhn T. Optical properties of gold nanoparticles decorated with furan-based diarylethene photochromic molecules. J Photochem Photobiol A Chem 2017. [DOI: 10.1016/j.jphotochem.2017.04.003] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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