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Ziani Z, Bellatreccia C, Battaglia FP, Morselli G, Gradone A, Ceroni P, Villa M. Copper indium sulfide quantum dots enabling quantitative visible light photoisomerisation of ( E)-azobenzene chromophores. NANOSCALE 2024; 16:12947-12956. [PMID: 38912567 DOI: 10.1039/d4nr01997k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/25/2024]
Abstract
Azobenzene derivatives have long been studied for their photochromic behaviour. One of the greatest challenges in this field is the quantitative (E) to (Z) photoconversion triggered by visible light irradiation. In this work, the synthesis and characterization of CuInS2 quantum dots (CIS-QDs) appended with azobenzene units are reported: quantitative (E) → (Z) isomerisation is obtained by visible light (e.g., λex = 533 nm). Interestingly, catalytic amounts of CIS-QDs allow the full photoconversion of ungrafted (E)-azobenzene derivatives into the corresponding (Z)-isomers using visible light. This peculiar behaviour is associated with the direct complexation of the (Z)-isomer on the QD surface.
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Affiliation(s)
- Zakaria Ziani
- Department of Chemistry Ciamician, University of Bologna, Via Selmi 2, 40126 Bologna, Italy.
| | - Caterina Bellatreccia
- Department of Chemistry Ciamician, University of Bologna, Via Selmi 2, 40126 Bologna, Italy.
| | - Filippo Piero Battaglia
- Department of Chemistry Ciamician, University of Bologna, Via Selmi 2, 40126 Bologna, Italy.
| | - Giacomo Morselli
- Department of Chemistry Ciamician, University of Bologna, Via Selmi 2, 40126 Bologna, Italy.
| | - Alessandro Gradone
- Istituto per la Microelettronica ed i Microsistemi (IMM) - CNR Sede di Bologna, via Gobetti 101, 40129 Bologna, Italy
| | - Paola Ceroni
- Department of Chemistry Ciamician, University of Bologna, Via Selmi 2, 40126 Bologna, Italy.
| | - Marco Villa
- Department of Chemistry Ciamician, University of Bologna, Via Selmi 2, 40126 Bologna, Italy.
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Ziani Z, Cobo S, Berthet N, Royal G. Optical modulation of cell nucleus penetration and singlet oxygen release of a switchable platinum complex. iScience 2024; 27:108704. [PMID: 38299025 PMCID: PMC10829881 DOI: 10.1016/j.isci.2023.108704] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2023] [Revised: 10/06/2023] [Accepted: 12/07/2023] [Indexed: 02/02/2024] Open
Abstract
The activation of anticancer molecules with visible light constitutes an elegant strategy to target tumors and to improve the selectivity of treatments. In this context, we report here a visible-light activatable bis-platinum complex (DHP-Pt2) incorporating an organic photo-switchable ligand based on the dimethyldihydropyrene moiety. Illumination of this metal complex with red light (660 nm) under air readily produces the corresponding endoperoxide form (CPDO2-Pt2). These two metal complexes exhibit different DNA binding properties and, more importantly, we show that only the photogenerated CPDO2-Pt2 is able to penetrate into cancer cell nuclei, where it is then capable of releasing cytotoxic singlet oxygen. This study represents the first proof-of-concept showing that dimethyldihydropyrene derivatives can be used to transport and deliver singlet oxygen into cancer cell nuclei upon visible-light activation.
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Affiliation(s)
- Zakaria Ziani
- University Grenoble Alpes, CNRS, DCM, 38000 Grenoble, France
| | - Saioa Cobo
- University Grenoble Alpes, CNRS, DCM, 38000 Grenoble, France
| | | | - Guy Royal
- University Grenoble Alpes, CNRS, DCM, 38000 Grenoble, France
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Li R, Mou B, Yamada M, Li W, Nakashima T, Kawai T. From Visible to Near-Infrared Light-Triggered Photochromism: Negative Photochromism. Molecules 2023; 29:155. [PMID: 38202738 PMCID: PMC10780068 DOI: 10.3390/molecules29010155] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2023] [Revised: 12/13/2023] [Accepted: 12/21/2023] [Indexed: 01/12/2024] Open
Abstract
Photochromic compounds, whose key molecular properties can be effectively modulated by light irradiation, have attracted significant attention for their potential applications in various research fields. The restriction of photoisomerization coloration induced by ultraviolet light limits their applications in the biomedical field and some other fields. Negative photochromism, wherein a relatively stable colored isomer transforms to a colorless metastable isomer under low-energy light irradiation, offers advantages in applications within materials science and life science. This review provides a summary of negatively photochromic compounds based on different molecular skeletons. Their corresponding design strategies and photochromic properties are presented to provide practical guidelines for future investigations. Negatively photochromic compounds can effectively expand the range of photochromic switches for future applications, offering unique properties such as responsiveness to visible to near-infrared light.
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Affiliation(s)
- Ruiji Li
- School of Pharmacy, Jining Medical University, Rizhao 276826, China; (B.M.); (W.L.)
| | - Bingzhao Mou
- School of Pharmacy, Jining Medical University, Rizhao 276826, China; (B.M.); (W.L.)
| | - Mihoko Yamada
- Division of Materials Science, Nara Institute of Science and Technology (NAIST), Ikoma 630-0192, Japan
| | - Wei Li
- School of Pharmacy, Jining Medical University, Rizhao 276826, China; (B.M.); (W.L.)
| | - Takuya Nakashima
- Division of Materials Science, Nara Institute of Science and Technology (NAIST), Ikoma 630-0192, Japan
- Department of Chemistry, Graduate School of Science, Osaka Metropolitan University, Sumiyoshi, Osaka 558-8585, Japan
| | - Tsuyoshi Kawai
- Division of Materials Science, Nara Institute of Science and Technology (NAIST), Ikoma 630-0192, Japan
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Takeo Y, Hirano J, Fukui N, Shinokubo H. Effect of Internal Substituents on the Properties of Dibenzo[ g, p]chrysene. Org Lett 2023; 25:8484-8488. [PMID: 37982582 DOI: 10.1021/acs.orglett.3c03428] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2023]
Abstract
We investigated the chemical and physical properties of internally functionalized dibenzo[g,p]chrysene (DBC) derivatives. These molecules exhibit chiral double-helicene-like structures that are configurationally stable at ambient temperatures. The internal substituents control the conformational change in the excited state, thereby modulating the emission intensity. Notably, the DBC derivative with a methylenedioxy unit undergoes aromatization through elimination of the internal substituent upon photoexcitation, resulting in the formation of DBC.
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Affiliation(s)
- Yoshihiro Takeo
- Department of Molecular and Macromolecular Chemistry, Graduate School of Engineering and Integrated Research Consortium on Chemical Sciences (IRCCS), Nagoya University, Furo-cho, Chikusa-ku, Nagoya, Aichi 464-8603, Japan
| | - Junichiro Hirano
- Department of Molecular and Macromolecular Chemistry, Graduate School of Engineering and Integrated Research Consortium on Chemical Sciences (IRCCS), Nagoya University, Furo-cho, Chikusa-ku, Nagoya, Aichi 464-8603, Japan
| | - Norihito Fukui
- Department of Molecular and Macromolecular Chemistry, Graduate School of Engineering and Integrated Research Consortium on Chemical Sciences (IRCCS), Nagoya University, Furo-cho, Chikusa-ku, Nagoya, Aichi 464-8603, Japan
- PRESTO, Japan Science and Technology Agency (JST), Kawaguchi, Saitama 332-0012, Japan
| | - Hiroshi Shinokubo
- Department of Molecular and Macromolecular Chemistry, Graduate School of Engineering and Integrated Research Consortium on Chemical Sciences (IRCCS), Nagoya University, Furo-cho, Chikusa-ku, Nagoya, Aichi 464-8603, Japan
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