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Nguyen HPQ, Mukherjee A, Usuba J, Wan J, Han GGD. Large and long-term photon energy storage in diazetidines via [2+2] photocycloaddition. Chem Sci 2024:d4sc05374e. [PMID: 39483249 PMCID: PMC11520292 DOI: 10.1039/d4sc05374e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2024] [Accepted: 10/22/2024] [Indexed: 11/03/2024] Open
Abstract
We report a series of p-functionalized phenylbenzoxazoles that offer remarkable energy storage, exceeding 300 J g-1, for the first time among intermolecular cycloaddition-based molecular solar thermal energy storage systems. The [2 + 2] photocycloaddition of phenylbenzoxazoles generates diazetidine cycloadducts that store energy for up to 23 years in the solid state and release energy upon triggered cycloreversion. The solid-state phase transition contributes to increasing overall energy storage densities, and the dearomative cycloaddition process is revealed to be critical for maximizing the intrinsic energy storage capacities. The solvent-assisted cycloreversion is also used to accelerate the energy release from the emerging molecular scaffold.
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Affiliation(s)
- Han P Q Nguyen
- Department of Chemistry, Brandeis University 415 South Street Waltham MA 02453 USA
| | - Anurag Mukherjee
- Department of Chemistry, Brandeis University 415 South Street Waltham MA 02453 USA
| | - Junichi Usuba
- Department of Chemistry, Brandeis University 415 South Street Waltham MA 02453 USA
| | - Joshua Wan
- Department of Chemistry, Brandeis University 415 South Street Waltham MA 02453 USA
| | - Grace G D Han
- Department of Chemistry, Brandeis University 415 South Street Waltham MA 02453 USA
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Cao M, Ma X, Wang C, Zou W, Wang F, Yu B, Cong H, Shen Y. Design of donor-acceptor conjugated polymers based on diketopyrrolopyrrole for NIR-II multifunctional imaging. J Mater Chem B 2024; 12:2294-2303. [PMID: 38344907 DOI: 10.1039/d3tb02864j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/29/2024]
Abstract
Diketopyrrolopyrrole (DPP) is an excellent photosensitizer and photothermal agent with the advantages of good planarity, strong electron affinity, high electron mobility, easy purification, easy structural modification and high molar absorption coefficient. It is regarded as one of the ideal choices for the design and synthesis of efficient organic photovoltaic materials. Therefore, two kinds of donor-acceptor (D-A) conjugated polymers were designed and synthesized with DPP as the acceptor, and their optical properties and applications in the near-infrared region were studied. The quantum yield (QY) of PBDT-DPP is 0.46%, and the highest temperature reached within 10 minutes after irradiation with a 660 nm laser is 60 °C. Another polymer, EDOT-DPP, has a QY of 0.48%, and its semiconductor polymer nanoparticle aqueous solution can reach 60 °C within 12 minutes under laser irradiation, achieving photothermal treatment of nude mice tumors. Both polymer NPs have good biocompatibility and promising applications in bioimaging and photothermal therapy.
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Affiliation(s)
- Mengyu Cao
- College of Chemistry and Chemical Engineering, College of Materials Science and Engineering, Institute of Biomedical Materials and Engineering, Qingdao University, Qingdao, 266071, China.
| | - Xuezhen Ma
- The Affiliated Qingdao Central Hospital of Qingdao University, Qingdao, 266071, China
| | - Chang Wang
- College of Chemistry and Chemical Engineering, College of Materials Science and Engineering, Institute of Biomedical Materials and Engineering, Qingdao University, Qingdao, 266071, China.
| | - Wentao Zou
- College of Chemistry and Chemical Engineering, College of Materials Science and Engineering, Institute of Biomedical Materials and Engineering, Qingdao University, Qingdao, 266071, China.
| | - Fang Wang
- College of Chemistry and Chemical Engineering, College of Materials Science and Engineering, Institute of Biomedical Materials and Engineering, Qingdao University, Qingdao, 266071, China.
| | - Bing Yu
- College of Chemistry and Chemical Engineering, College of Materials Science and Engineering, Institute of Biomedical Materials and Engineering, Qingdao University, Qingdao, 266071, China.
- State Key Laboratory of Bio-Fibers and Eco-Textiles, Qingdao University, Qingdao 266071, China
| | - Hailin Cong
- College of Chemistry and Chemical Engineering, College of Materials Science and Engineering, Institute of Biomedical Materials and Engineering, Qingdao University, Qingdao, 266071, China.
- State Key Laboratory of Bio-Fibers and Eco-Textiles, Qingdao University, Qingdao 266071, China
- School of Materials Science and Engineering, Shandong University of Technology, Zibo 255000, China
| | - Youqing Shen
- College of Chemistry and Chemical Engineering, College of Materials Science and Engineering, Institute of Biomedical Materials and Engineering, Qingdao University, Qingdao, 266071, China.
- Key Laboratory of Biomass Chemical Engineering of Ministry of Education, Center for Bionanoengineering, and Department of Chemical and Biological Engineering, Zhejiang University, Hangzhou, Zhejiang, 310027, China
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