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Martyka M, Jankowska J. New insights into the photocyclization reaction of a popular diarylethene switch: a nonadiabatic molecular dynamics study. Phys Chem Chem Phys 2024; 26:13383-13394. [PMID: 38646878 DOI: 10.1039/d3cp06256b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/23/2024]
Abstract
Diarylethene (DAE) molecular switches have continued to attract the attention of researchers for over 20 years. Their remarkable photophysical properties endow them with countless applications in photonics and molecular technologies. However, despite extensive experimental and theoretical research, the mechanism of DAE photoswitching is not yet fully rationalized. In this work, we investigate the ring closure dynamics of a popular DAE switch, 1,2-bis(3-methyl-5-phenyl-2 thienyl)perfluorocyclopentene (PT), using nonadiabatic molecular dynamics (NAMD) simulations. Employing the fewest switches surface hopping protocol, along with the semi-empirical multireference ODM2/MRCI-SD method, we investigate possible reaction pathways for this photoprocess, as well as their timescales and resulting photoproducts. Furthermore, using a dynamic configuration-space sampling procedure, we elucidate the role of triplet states in the photocyclization of PT, supporting available experimental data for the closely related DMPT molecule, which indicate an ultrafast intersystem crossing (ISC) transition competing with the singlet-driven photoswitching reaction. Our findings not only corroborate experimental studies on DAE switches, but also provide new mechanistic insights into the potential use in the rational design of DAE switches tailored for specific technological applications.
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Affiliation(s)
- Mikołaj Martyka
- Faculty of Chemistry, University of Warsaw, Pasteura 1, Warsaw, 02-093, Poland.
- Interdisciplinary Doctoral School, University of Warsaw, Dobra 56/66, Warsaw, 00-312, Poland
| | - Joanna Jankowska
- Faculty of Chemistry, University of Warsaw, Pasteura 1, Warsaw, 02-093, Poland.
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Liu D, Wang Y, Zhang Q, Qing YM, Wang Y, Huang H, Leung CW, Lei D. Light-Triggered Reversible Tuning of Second-Harmonic Generation in a Photoactive Plasmonic Molecular Nanocavity. NANO LETTERS 2023. [PMID: 37067172 DOI: 10.1021/acs.nanolett.2c04988] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
The ultrasmall mode volume and ultralarge local field enhancement of compact plasmonic nanocavities have been widely explored to amplify a variety of optical phenomena at the nanoscale. Other than passively generating near-field enhancements, dynamic tuning of their intensity and associated nonlinear optical processes such as second-harmonic generation (SHG) play vital roles in the field of active nanophotonics. Here we apply a host-guest molecular complex to construct a photoswitchable molecule-sandwiched metallic particle-on-film nanocavity (MPoFN) and demonstrate both light-controlled linear and nonlinear optical tuning. Under alternating illumination of ultraviolet (UV) and visible light, the photoactive plasmonic molecular nanocavity shows reversible switching of both surface-enhanced Raman scattering (SERS) and plasmon resonance. Surprisingly, we observe more significant modulation of SHG from this photoactive MPoFN, which can be explained qualitatively by the quantum conductivity theory (QCT). Our study could pave the way for developing miniaturized integrated optical circuits for ultrafast all-optical information processing and communication.
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Affiliation(s)
- Danjun Liu
- Department of Materials Science and Engineering, City University of Hong Kong, 83 Tat Chee Avenue, Kowloon 999077, Hong Kong SAR, People's Republic of China
- Department of Applied Physics, The Hong Kong Polytechnic University, 11 Yuk Choi Road, Hung Hom 999077, Hong Kong SAR, People's Republic of China
| | - Yunxia Wang
- Department of Materials Science and Engineering, City University of Hong Kong, 83 Tat Chee Avenue, Kowloon 999077, Hong Kong SAR, People's Republic of China
| | - Qiang Zhang
- College of Optoelectronics and Key Lab of Advanced Transducers and Intelligent Control System of Ministry of Education, Taiyuan University of Technology, Taiyuan 030024, People's Republic of China
| | - Ye Ming Qing
- Department of Materials Science and Engineering, City University of Hong Kong, 83 Tat Chee Avenue, Kowloon 999077, Hong Kong SAR, People's Republic of China
| | - Yaorong Wang
- Department of Materials Science and Engineering, City University of Hong Kong, 83 Tat Chee Avenue, Kowloon 999077, Hong Kong SAR, People's Republic of China
| | - Haitao Huang
- Department of Applied Physics, The Hong Kong Polytechnic University, 11 Yuk Choi Road, Hung Hom 999077, Hong Kong SAR, People's Republic of China
| | - Chi Wah Leung
- Department of Applied Physics, The Hong Kong Polytechnic University, 11 Yuk Choi Road, Hung Hom 999077, Hong Kong SAR, People's Republic of China
| | - Dangyuan Lei
- Department of Materials Science and Engineering, City University of Hong Kong, 83 Tat Chee Avenue, Kowloon 999077, Hong Kong SAR, People's Republic of China
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Martyka M, Jankowska J. Nonadiabatic molecular dynamics study of a complete photoswitching cycle for a full-size diarylethene system. J Photochem Photobiol A Chem 2023. [DOI: 10.1016/j.jphotochem.2022.114513] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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Tsujihara T, Zhou DY, Suzuki T, Tamura S, Kawano T. Helically Chiral 1-Sulfur-Functionalized [6]Helicene: Synthesis, Optical Resolution, and Functionalization. Org Lett 2017; 19:3311-3314. [DOI: 10.1021/acs.orglett.7b01470] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Tetsuya Tsujihara
- Department
of Medicinal and Organic Chemistry, School of Pharmacy, Iwate Medical University, Yahaba, Iwate 028-3694, Japan
| | - Da-Yang Zhou
- Comprehensive
Analysis Center, Institute of Scientific and Industrial Research, Osaka University, Mihogaoka, Ibaraki 567-0047, Japan
| | - Takeyuki Suzuki
- Comprehensive
Analysis Center, Institute of Scientific and Industrial Research, Osaka University, Mihogaoka, Ibaraki 567-0047, Japan
| | - Satoru Tamura
- Department
of Medicinal and Organic Chemistry, School of Pharmacy, Iwate Medical University, Yahaba, Iwate 028-3694, Japan
| | - Tomikazu Kawano
- Department
of Medicinal and Organic Chemistry, School of Pharmacy, Iwate Medical University, Yahaba, Iwate 028-3694, Japan
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