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Xu Y, Meng X, Zhao Y, Jia M, Zhu H, Song J, Su Y, Qiao W, Qi J, Wang ZY. Pyrrolopyrrole Cyanine J-Aggregate Nanoparticles with High Near-Infrared Fluorescence Brightness and Photothermal Performance for Efficient Phototheranostics. ACS APPLIED MATERIALS & INTERFACES 2024; 16:39005-39020. [PMID: 39034639 DOI: 10.1021/acsami.4c06225] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/23/2024]
Abstract
Advanced photosensitizers for high-performance fluorescence imaging-guided photothermal therapy demand excellent near-infrared (NIR) brightness [molar absorption coefficient (ε) × quantum yield (QY)] and exceptional photothermal performance [ε × photothermal conversion efficiency (PCE)]. However, integrating high brightness and potent photothermal performance within a single molecule faces a formidable challenge. This article proposes a method to address this issue by preparing J-aggregate nanoparticles (NPs) using molecules with high ε. J-aggregates effectively improve QY and induce molecular emission redshift, while high ε molecules play a crucial role in improving the brightness and photothermal performance. By optimizing the molecular structure based on the pyrrolopyrrole cyanine (PPCy), precise control over the QY and PCE of PPCy J-aggregates is achieved. Ultimately, PDDO NPs exhibiting superior brightness (ε × QY = 3.32 × 104 M-1 cm-1) and photothermal performance (ε × PCE = 1.21 × 105 M-1 cm-1) are identified as high-performance photosensitizers. Notably, each parameter represents one of the highest levels among the reported fluorescence or photothermal probes to date. The in vivo studies demonstrate that PDDO NPs possess exceptional NIR imaging capabilities and remarkable photothermal tumor inhibition rates. This study provides innovative insights into the development of high-performance multifunctional photosensitizers.
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Affiliation(s)
- Yingnan Xu
- State Key Laboratory of Fine Chemicals, Department of Polymer Science & Materials, School of Chemical Engineering, Dalian University of Technology, Dalian 116024, China
| | - Xue Meng
- State Key Laboratory of Medicinal Chemical Biology, Key Laboratory of Bioactive Materials, Ministry of Education, Frontiers Science Center for Cell Responses, and College of Life Sciences, Nankai University, Tianjin 300071, China
| | - Yang Zhao
- Key Laboratory of Materials Modification By Laser, Ion and Electron Beams (Dalian University of Technology), Ministry of Education, Dalian 116024, China
| | - Mengmeng Jia
- State Key Laboratory of Fine Chemicals, Department of Polymer Science & Materials, School of Chemical Engineering, Dalian University of Technology, Dalian 116024, China
| | - Huaxin Zhu
- State Key Laboratory of Fine Chemicals, Department of Polymer Science & Materials, School of Chemical Engineering, Dalian University of Technology, Dalian 116024, China
| | - Jianwen Song
- State Key Laboratory of Medicinal Chemical Biology, Key Laboratory of Bioactive Materials, Ministry of Education, Frontiers Science Center for Cell Responses, and College of Life Sciences, Nankai University, Tianjin 300071, China
| | - Yan Su
- Key Laboratory of Materials Modification By Laser, Ion and Electron Beams (Dalian University of Technology), Ministry of Education, Dalian 116024, China
| | - Wenqiang Qiao
- State Key Laboratory of Fine Chemicals, Department of Polymer Science & Materials, School of Chemical Engineering, Dalian University of Technology, Dalian 116024, China
| | - Ji Qi
- State Key Laboratory of Medicinal Chemical Biology, Key Laboratory of Bioactive Materials, Ministry of Education, Frontiers Science Center for Cell Responses, and College of Life Sciences, Nankai University, Tianjin 300071, China
| | - Zhi Yuan Wang
- State Key Laboratory of Fine Chemicals, Department of Polymer Science & Materials, School of Chemical Engineering, Dalian University of Technology, Dalian 116024, China
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2
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Ramezani P, De Smedt SC, Sauvage F. Supramolecular dye nanoassemblies for advanced diagnostics and therapies. Bioeng Transl Med 2024; 9:e10652. [PMID: 39036081 PMCID: PMC11256156 DOI: 10.1002/btm2.10652] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2023] [Revised: 01/09/2024] [Accepted: 01/19/2024] [Indexed: 07/23/2024] Open
Abstract
Dyes have conventionally been used in medicine for staining cells, tissues, and organelles. Since these compounds are also known as photosensitizers (PSs) which exhibit photoresponsivity upon photon illumination, there is a high desire towards formulating these molecules into nanoparticles (NPs) to achieve improved delivery efficiency and enhanced stability for novel imaging and therapeutic applications. Furthermore, it has been shown that some of the photophysical properties of these molecules can be altered upon NP formation thereby playing a major role in the outcome of their application. In this review, we primarily focus on introducing dye categories, their formulation strategies and how these strategies affect their photophysical properties in the context of photothermal and non-photothermal applications. More specifically, the most recent progress showing the potential of dye supramolecular assemblies in modalities such as photoacoustic and fluorescence imaging, photothermal and photodynamic therapies as well as their employment in photoablation as a novel modality will be outlined. Aside from their photophysical activity, we delve shortly into the emerging application of dyes as drug stabilizing agents where these molecules are used together with aggregator molecules to form stable nanoparticles.
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Affiliation(s)
- Pouria Ramezani
- Laboratory of General Biochemistry and Physical Pharmacy, Faculty of Pharmaceutical Sciences Ghent University Ghent Belgium
| | - Stefaan C De Smedt
- Laboratory of General Biochemistry and Physical Pharmacy, Faculty of Pharmaceutical Sciences Ghent University Ghent Belgium
| | - Félix Sauvage
- Laboratory of General Biochemistry and Physical Pharmacy, Faculty of Pharmaceutical Sciences Ghent University Ghent Belgium
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3
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Stenspil SG, Laursen BW. Photophysics of fluorescent nanoparticles based on organic dyes - challenges and design principles. Chem Sci 2024; 15:8625-8638. [PMID: 38873083 PMCID: PMC11168078 DOI: 10.1039/d4sc01352b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2024] [Accepted: 05/06/2024] [Indexed: 06/15/2024] Open
Abstract
Fluorescent nanoparticles have become attractive for bioanalysis and imaging, due to their high brightness and photostability. Many different optical materials have been applied in fluorescent nanoparticles with a broad range of properties and characteristics. One appealing approach is the incorporation of molecular organic fluorophores in nanoparticles with the intention of transferring their known attractive solution-state properties directly to the nanoparticles. However, as molecular dyes are packed closely together in the nanoparticles their interactions most often result in fluorescence quenching and change in spectral properties making this approach challenging. In this perspective we will first discuss the origins of quenching and spectral shifts observed in dye based nanoparticles. On this background, we will then describe various designs of dye based NPs and how they address the challenges of dye-dye interactions and quenching. Our aim is to provide a general framework for understanding the supramolecular mechanisms that determine the photophysics of dye based nanoparticles. This framework of molecular photophysics and its relation to the internal structure of dye based nanoparticles can hopefully serve to assist rational design and optimization of new and improved dye based nanoparticles.
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Affiliation(s)
- Stine G Stenspil
- Nano-Science Center & Department of Chemistry, University of Copenhagen Universitetsparken 5 2100 København Ø Denmark
| | - Bo W Laursen
- Nano-Science Center & Department of Chemistry, University of Copenhagen Universitetsparken 5 2100 København Ø Denmark
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4
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Piwoński H, Szczepski K, Jaremko M, Jaremko Ł, Habuchi S. Shielding Effects Provide a Dominant Mechanism in J-Aggregation-Induced Photoluminescence Enhancement of Carbon Nanotubes. ACS OMEGA 2024; 9:16496-16507. [PMID: 38617658 PMCID: PMC11007775 DOI: 10.1021/acsomega.4c00240] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/08/2024] [Revised: 03/04/2024] [Accepted: 03/06/2024] [Indexed: 04/16/2024]
Abstract
The unique photophysical properties of single-walled carbon nanotubes (SWCNTs) exhibit great potential for bioimaging applications. This led to extensive exploration of photosensitization methods to improve their faint shortwave infrared (SWIR) photoluminescence. Here, we report the mechanisms of SWCNT-assisted J-aggregation of cyanine dyes and the associated photoluminescence enhancement of SWCNTs in the SWIR spectral region. Surprisingly, we found that excitation energy transfer between the cyanine dyes and SWCNTs makes a negligible contribution to the overall photoluminescence enhancement. Instead, the shielding of SWCNTs from the surrounding water molecules through hydrogen bond-assisted macromolecular reorganization of ionic surfactants triggered by counterions and the physisorption of the dye molecules on the side walls of SWCNTs play a primary role in the photoluminescence enhancement of SWCNTs. We observed 2 orders of magnitude photoluminescence enhancement of SWCNTs by optimizing these factors. Our findings suggest that the proper shielding of SWCNTs is the critical factor for their photoluminescence enhancement, which has important implications for their application as imaging agents in biological settings.
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Affiliation(s)
- Hubert Piwoński
- Biological and Environmental
Science and Engineering Division, King Abdullah
University of Science and Technology, Thuwal 23955-6900, Saudi Arabia
| | - Kacper Szczepski
- Biological and Environmental
Science and Engineering Division, King Abdullah
University of Science and Technology, Thuwal 23955-6900, Saudi Arabia
| | - Mariusz Jaremko
- Biological and Environmental
Science and Engineering Division, King Abdullah
University of Science and Technology, Thuwal 23955-6900, Saudi Arabia
| | - Łukasz Jaremko
- Biological and Environmental
Science and Engineering Division, King Abdullah
University of Science and Technology, Thuwal 23955-6900, Saudi Arabia
| | - Satoshi Habuchi
- Biological and Environmental
Science and Engineering Division, King Abdullah
University of Science and Technology, Thuwal 23955-6900, Saudi Arabia
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5
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Hu X, Zhu C, Sun F, Chen Z, Zou J, Chen X, Yang Z. J-Aggregation Strategy toward Potentiated NIR-II Fluorescence Bioimaging of Molecular Fluorophores. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2024; 36:e2304848. [PMID: 37526997 DOI: 10.1002/adma.202304848] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/22/2023] [Revised: 07/28/2023] [Indexed: 08/03/2023]
Abstract
Molecular fluorophores emitting in the second near-infrared (NIR-II, 1000-1700 nm) window with strong optical harvesting and high quantum yields hold great potential for in vivo deep-tissue bioimaging and high-resolution biosensing. Recently, J-aggregates are harnessed to engineer long-wavelength NIR-II emitters and show unique superiority in tumor detection, vessel mapping, surgical navigation, and phototheranostics due to their bathochromic-shifted optical bands in the required slip-stacked arrangement aggregation state. However, despite the preliminary progress of NIR-II J-aggregates and theoretical study of structure-property relationships, further paradigms of NIR-II J-aggregates remain scarce due to the lack of study on aggregated fluorophores with slip-stacked fashion. In this effort, how to utilize the specific molecular structure to form slip-stacked packing motifs with J-type aggregated exciton coupling is emphatically elucidated. First, several molecular regulating strategies to achieve NIR-II J-aggregates containing intermolecular interactions and external conditions are positively summarized and deeply analyzed. Then, the recent reports on J-aggregates for NIR-II bioimaging and theranostics are systematically summarized to provide a clear reference and direction for promoting the development of NIR-II organic fluorophores. Eventually, the prospective efforts on ameliorating and promoting NIR-II J-aggregates to further clinical practices are outlined.
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Affiliation(s)
- Xiaoming Hu
- Jiangxi Key Laboratory of Nanobiomaterials, School of Materials Science and Engineering, East China Jiaotong University, Nanchang, 330013, China
- Strait Laboratory of Flexible Electronics (SLoFE), Strait Institute of Flexible Electronics (SIFE, Future Technologies), Fujian Normal University, Fuzhou, Fujian, 350117, China
| | - Caijun Zhu
- Jiangxi Key Laboratory of Nanobiomaterials, School of Materials Science and Engineering, East China Jiaotong University, Nanchang, 330013, China
| | - Fengwei Sun
- Strait Laboratory of Flexible Electronics (SLoFE), Strait Institute of Flexible Electronics (SIFE, Future Technologies), Fujian Normal University, Fuzhou, Fujian, 350117, China
| | - Zejing Chen
- Jiangxi Key Laboratory of Nanobiomaterials, School of Materials Science and Engineering, East China Jiaotong University, Nanchang, 330013, China
| | - Jianhua Zou
- Departments of Diagnostic Radiology, Surgery, Chemical and Biomolecular Engineering and Biomedical Engineering, Yong Loo Lin School of Medicine and Faculty of Engineering, National University of Singapore, Singapore, 119074, Singapore
| | - Xiaoyuan Chen
- Departments of Diagnostic Radiology, Surgery, Chemical and Biomolecular Engineering and Biomedical Engineering, Yong Loo Lin School of Medicine and Faculty of Engineering, National University of Singapore, Singapore, 119074, Singapore
- Institute of Molecular and Cell Biology, Agency for Science, Technology, and Research (A*STAR) 61 Biopolis Drive, Proteos, Singapore, 138673, Singapore
| | - Zhen Yang
- Strait Laboratory of Flexible Electronics (SLoFE), Strait Institute of Flexible Electronics (SIFE, Future Technologies), Fujian Normal University, Fuzhou, Fujian, 350117, China
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6
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Li D, Shi H, Qi Q, Chang B, Jiang Y, Qian K, Guan X, Kang P, Ma N, Zhang Y, Zhang Z, Shi X, Qu C, Wu Y, Chen W, Chen H, Li B, Chen L, Li Z, Ma S, Xu L, Zhang Y, Tian J, Hu Z, Jia W, Cheng Z. Clinically Translatable Solid-State Dye for NIR-II Imaging of Medical Devices. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2023; 10:e2303491. [PMID: 37946702 PMCID: PMC10754084 DOI: 10.1002/advs.202303491] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/29/2023] [Revised: 10/04/2023] [Indexed: 11/12/2023]
Abstract
Medical devices are commonly implanted underneath the skin, but how to real-time noninvasively monitor their migration, integrity, and biodegradation in human body is still a formidable challenge. Here, the study demonstrates that benzyl violet 4B (BV-4B), a main component in the FDA-approved surgical suture, is found to produce fluorescence signal in the first near-infrared window (NIR-I, 700-900 nm) in polar solutions, whereas BV-4B self-assembles into highly crystalline aggregates upon a formation of ultrasmall nanodots and can emit strong fluorescence in the second near-infrared window (NIR-II, 1000-1700 nm) with a dramatic bathochromic shift in the absorption spectrum of ≈200 nm. Intriguingly, BV-4B-involved suture knots underneath the skin can be facilely monitored during the whole degradation process in vivo, and the rupture of the customized BV-4B-coated silicone catheter is noninvasively diagnosed by NIR-II imaging. Furthermore, BV-4B suspended in embolization glue achieves hybrid fluorescence-guided surgery (hybrid FGS) for arteriovenous malformation. As a proof-of-concept study, the solid-state BV-4B is successfully used for NIR-II imaging of surgical sutures in operations of patients. Overall, as a clinically translatable solid-state dye, BV-4B can be applied for in vivo monitoring the fate of medical devices by NIR-II imaging.
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7
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Barotov U, Arachchi DHT, Klein MD, Zhang J, Šverko T, Bawendi MG. Near-Unity Superradiant Emission from Delocalized Frenkel Excitons in a Two-Dimensional Supramolecular Assembly. ADVANCED OPTICAL MATERIALS 2023; 11:2201471. [PMID: 36846517 PMCID: PMC9957265 DOI: 10.1002/adom.202201471] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/24/2022] [Indexed: 06/18/2023]
Abstract
We demonstrate three general effective strategies to mitigate non-radiative losses in the superradiant emission from supramolecular assemblies. We focus on J-aggregates of 5,5',6,6'-tetrachloro-1,1'-diethyl-3,3'-di(4-sulfobutyl)-benzimidazolocarbocyanine (TDBC) and elucidate the nature of their nonradiative processes. We show that self-annealing at room temperature, photo-brightening, and the purification of the dye monomers all lead to substantial increases in emission quantum yields (QYs) and a concomitant lengthening of the emission lifetime, with purification of the monomers having the largest effect. We use structural and optical measurements to support a microscopic model that emphasizes the deleterious effects of a small number of impurity and defect sites that serve as non-radiative recombination centers. This understanding has yielded a room temperature molecular fluorophore in solution with an unprecedented combination of fast emissive lifetime and high QY. We obtain superradiant emission from J-aggregates of TDBC in solution at room temperature with a QY of 82% coupled with an emissive lifetime of 174 ps. This combination of high QY and fast lifetime at room temperature makes supramolecular assemblies of purified TDBC a model system for the study of fundamental superradiance phenomena. High QY J-aggregates are uniquely suited for the development of applications that require high speed and high brightness fluorophores such as devices for high speed optical communication.
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Affiliation(s)
- Ulugbek Barotov
- Department of Chemistry, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, Massachusetts 02139, United States
| | - Dimuthu H. Thanippuli Arachchi
- Department of Chemistry, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, Massachusetts 02139, United States
| | - Megan D. Klein
- Department of Chemistry, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, Massachusetts 02139, United States
| | - Juanye Zhang
- Department of Chemistry, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, Massachusetts 02139, United States
| | - Tara Šverko
- Department of Chemistry, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, Massachusetts 02139, United States
| | - Moungi G. Bawendi
- Department of Chemistry, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, Massachusetts 02139, United States
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8
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Piwoński H, Nozue S, Habuchi S. The Pursuit of Shortwave Infrared-Emitting Nanoparticles with Bright Fluorescence through Molecular Design and Excited-State Engineering of Molecular Aggregates. ACS NANOSCIENCE AU 2022; 2:253-283. [PMID: 37102065 PMCID: PMC10125152 DOI: 10.1021/acsnanoscienceau.1c00038] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Indexed: 04/28/2023]
Abstract
Shortwave infrared (SWIR) fluorescence detection gradually becomes a pivotal real-time imaging modality, allowing one to elucidate biological complexity in deep tissues with subcellular resolution. The key challenge for the further growth of this imaging modality is the design of new brighter biocompatible fluorescent probes. This review summarizes the recent progress in the development of organic-based nanomaterials with an emphasis on new strategies that extend the fluorescence wavelength from the near-infrared to the SWIR spectral range and amplify the fluorescence brightness. We first introduce the most representative molecular design strategies to obtain near-infrared-SWIR wavelength fluorescence emission from small organic molecules. We then discuss how the formation of nanoparticles based on small organic molecules contributes to the improvement of fluorescence brightness and the shift of fluorescence to SWIR, with a special emphasis on the excited-state engineering of molecular probes in an aggregate state and spatial packing of the molecules in nanoparticles. We build our discussion based on a historical perspective on the photophysics of molecular aggregates. We extend this discussion to nanoparticles made of conjugated polymers and discuss how fluorescence characteristics could be improved by molecular design and chain conformation of the polymer molecules in nanoparticles. We conclude the article with future directions necessary to expand this imaging modality to wider bioimaging applications including single-particle deep tissue imaging. Issues related to the characterization of SWIR fluorophores, including fluorescence quantum yield unification, are also mentioned.
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9
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Yang J, Guo L, Yong X, Zhang T, Wang B, Song H, Zhao YS, Hou H, Yang B, Ding J, Lu S. Simulating the Structure of Carbon Dots via Crystalline π‐Aggregated Organic Nanodots Prepared by Kinetically Trapped Self‐Assembly. Angew Chem Int Ed Engl 2022; 61:e202207817. [DOI: 10.1002/anie.202207817] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2022] [Indexed: 11/06/2022]
Affiliation(s)
- Jianye Yang
- Green Catalysis Center, and College of Chemistry Zhengzhou University Zhengzhou 450000 China
| | - Like Guo
- Green Catalysis Center, and College of Chemistry Zhengzhou University Zhengzhou 450000 China
| | - Xue Yong
- Green Catalysis Center, and College of Chemistry Zhengzhou University Zhengzhou 450000 China
| | - Tongjin Zhang
- Key Laboratory of Photochemistry Institute of Chemistry Chinese Academy of Sciences Beijing 100190 China
- School of Chemical Sciences University of Chinese Academy of Sciences Beijing 100049 China
| | - Boyang Wang
- Green Catalysis Center, and College of Chemistry Zhengzhou University Zhengzhou 450000 China
| | - Haoqiang Song
- Green Catalysis Center, and College of Chemistry Zhengzhou University Zhengzhou 450000 China
| | - Yong Sheng Zhao
- Key Laboratory of Photochemistry Institute of Chemistry Chinese Academy of Sciences Beijing 100190 China
- School of Chemical Sciences University of Chinese Academy of Sciences Beijing 100049 China
| | - Hongwei Hou
- Green Catalysis Center, and College of Chemistry Zhengzhou University Zhengzhou 450000 China
| | - Bai Yang
- State Key Lab of Supramolecular Structure and Materials College of Chemistry Jilin University Changchun 130012 China
| | - Jie Ding
- Green Catalysis Center, and College of Chemistry Zhengzhou University Zhengzhou 450000 China
| | - Siyu Lu
- Green Catalysis Center, and College of Chemistry Zhengzhou University Zhengzhou 450000 China
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Du B, Liu R, Qu C, Qian K, Suo Y, Wu F, Chen H, Li X, Li Y, Liu H, Cheng Z. J-aggregates albumin-based NIR-II fluorescent dye nanoparticles for cancer phototheranostics. Mater Today Bio 2022; 16:100366. [PMID: 36017108 PMCID: PMC9395659 DOI: 10.1016/j.mtbio.2022.100366] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2022] [Revised: 07/13/2022] [Accepted: 07/13/2022] [Indexed: 11/30/2022] Open
Abstract
Phototheranostics, relying on energy conversions of fluorophores upon excitation, integrating diagnostic fluorescence imaging and photo-driven therapy, represents a promising strategy for cancer precision medicine. Compared with the first near-infrared biological window (NIR-I), fluorophores imaged in the second window (NIR-II, 1000–1700 nm) exhibit a higher temporal and spatial resolution and tissue penetration depth. Polymethine cyanine-based dye IR1061 is a typical NIR-II small-molecule organic fluorophore, but its low water solubility and short circulation time limiting its biological applications. Therefore, human serum albumin (HSA) nanoparticles with great biocompatibility and biosafety were employed to fabricate hydrophobic IR1061, which exhibited red-shifted absorption band as typical for J-aggregates. Moreover, IR1061@HSA nanoparticles can be successfully used for NIR-II imaging to noninvasively visualize the tumor vascular networks, as well as real-time intraoperative image-guided tumor resection. Interestingly, benefiting from the high photothermal conversion efficiency brought by J-aggregates, IR1061@HSA nanoparticles were also explored for photothermal therapy (PTT) and cause efficient thermal ablation of tumors. Overall, IR1061@HSA, as a novel J-aggregates albumin-based NIR II dye nanoparticle with high biocompatibility, provides an integrated versatile platform for cancer phototheranostics with promising clinical translation prospects.
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Wu Y, Yang H, Shi C, Sun H, Yin S, Wang G. Luminescence-enhanced conjugated polymer dots through thermal treatment for cell imaging. Biomater Sci 2022; 10:4764-4772. [PMID: 35848441 DOI: 10.1039/d2bm00516f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Conjugated polymer dots (Pdots) are often used as excellent fluorescent probes in the biomedical field. In the process of preparing Pdots, the rapid change of the solvent polarity will result in a messy and defective stacking of the polymer chains in the particle, and these stacking defects of the polymer chains may weaken its luminescence properties. Here, we try to optimize the stacking of the conjugated polymer chains by the thermal annealing treatment. After the low temperature thermal treatment, the fluorescence intensity of Pdots can be enhanced by about 11%-29%, and Pdots maintain their original stability and biosafety. We used transmission electron microscopy (TEM) and single particle fluorescence imaging to reveal the possible mechanism of the chain stacking optimization process, that is, the thermal annealing process of Pdots is the competition between internal chain rearrangement in the particle and particle aggregation. The luminescence-enhanced Pdots exhibit good cellular imaging performance. These results prove that it is feasible to extend the thermal annealing treatment from planar polymer devices to polymer nanoparticles. It provides the possibility to realize stable and complex biological imaging applications using Pdots with a simple molecular structure, and a mature improvement scheme for the mass preparation of Pdots.
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Affiliation(s)
- Yuyang Wu
- State Key Laboratory of Integrated Optoelectronics, College of Electronic Science and Engineering, Jilin University, Changchun, Jilin 130012, P. R. China.
| | - Hanyu Yang
- State Key Laboratory of Integrated Optoelectronics, College of Electronic Science and Engineering, Jilin University, Changchun, Jilin 130012, P. R. China.
| | - Chenyang Shi
- State Key Laboratory of Integrated Optoelectronics, College of Electronic Science and Engineering, Jilin University, Changchun, Jilin 130012, P. R. China.
| | - Hang Sun
- Key Laboratory of Bionic Engineering (Ministry of Education), College of Biological and Agricultural Engineering, Jilin University, Changchun, Jilin 130022, P. R. China
| | - Shengyan Yin
- State Key Laboratory of Integrated Optoelectronics, College of Electronic Science and Engineering, Jilin University, Changchun, Jilin 130012, P. R. China.
| | - Guangbin Wang
- Department of Orthopedics, Shengjing Hospital of China Medical University, Shenyang, Liaoning, 110004, P. R. China.
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Yang J, Guo L, Yong X, Zhang T, Wang B, Song H, Zhao Y, Hou H, Yang B, Ding J, Lu S. Simulating the Structure of Carbon Dots via Crystalline π ‐aggregated Organic Nanodots Prepared by Kinetically Trapped Self‐assembly. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202207817] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Jianye Yang
- Zhengzhou University Green Catalysis Center, and College of Chemistry CHINA
| | - Like Guo
- Zhengzhou University Green Catalysis Center, and College of Chemistry CHINA
| | - Xue Yong
- Zhengzhou University Green Catalysis Center, and College of Chemistry CHINA
| | - Tongjin Zhang
- Chinese Academy of Sciences Key Laboratory of Photochemistry, Institute of Chemistry CHINA
| | - Boyang Wang
- Zhengzhou University Green Catalysis Center, and College of Chemistry CHINA
| | - Haoqiang Song
- Zhengzhou University Green Catalysis Center, and College of Chemistry CHINA
| | - YongSheng Zhao
- Chinese Academy of Sciences Key Laboratory of Photochemistry, Institute of Chemistry CHINA
| | - Hongwei Hou
- Zhengzhou University Green Catalysis Center, and College of Chemistry CHINA
| | - Bai Yang
- Jilin University College of Chemistry CHINA
| | - Jie Ding
- Zhengzhou University Green Catalysis Center, and College of Chemistry CHINA
| | - Siyu Lu
- Zhengzhou University College of Chemistry and Molecular Engineering No.100 Science Avenue, Zhengzhou City, Henan Province P.R.China. Zhengzhou, Henan CHINA
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13
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Singh AK, Schade B, Wycisk V, Böttcher C, Haag R, von Berlepsch H. Aggregation of Amphiphilic Carbocyanines: Fluorination Favors Cylindrical Micelles over Bilayered Tubes. J Phys Chem B 2021; 125:10538-10550. [PMID: 34505509 DOI: 10.1021/acs.jpcb.1c05128] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
The synthesis of a new amphiphilic 5,5',6,6'-tetrachlorobenzimidacarbocyanine dye derivative with -(CH2)2-(CF2)5-CF3 chains attached to the nitrogen atoms in the 1,1'-position, CF8O3, is reported. Depending on the dye concentration and the addition of MeOH, CF8O3 forms J- and H-aggregates in aqueous solutions. The aggregation behavior was investigated using steady-state absorption, linear dichroism, and fluorescence spectroscopy, as well as by cryogenic transmission electron microscopy (cryo-TEM). The J-band of the MeOH-free solution is monomer-like, rather broad, and less red-shifted with respect to the monomer absorption, indicating weak excitonic coupling and disorder effects. Cryo-TEM reveals a diversity of supramolecular structures, wherein linear and branched cylindrical micelles dominate. It is concluded that the high stiffness of fluoroalkyl chains does not allow the chains to splay and completely fill up the hydrophobic gap between opposing chromophores. This destabilizes the bilayers and favors the micellar structure motifs instead. The aggregates appearing at 30% MeOH show a split absorption spectrum consisting of a broad blue-shifted H-band and an accompanying sharp red-shifted J-band with perpendicular polarizations. These HJ-type aggregates are also composed of micellar fibers, but these bundle into rope-like strands. For 10% MeOH, a narrow bilayered tube is the dominating morphology. The observed MeOH dependence of aggregation reveals a clear cosolvent effect.
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Affiliation(s)
- Abhishek Kumar Singh
- Institut für Chemie und Biochemie, Organische Chemie, Freie Universität Berlin, Takustraße 3, 14195 Berlin, Germany
| | - Boris Schade
- Forschungszentrum für Elektronenmikroskopie, Institut für Chemie und Biochemie, Freie Universität Berlin, Fabeckstraße 36a, 14195 Berlin, Germany.,Core Facility BioSupraMol, Institut für Chemie und Biochemie, Freie Universität Berlin, Fabeckstraße 36a, 14195 Berlin, Germany
| | - Virginia Wycisk
- Institut für Chemie und Biochemie, Organische Chemie, Freie Universität Berlin, Takustraße 3, 14195 Berlin, Germany
| | - Christoph Böttcher
- Forschungszentrum für Elektronenmikroskopie, Institut für Chemie und Biochemie, Freie Universität Berlin, Fabeckstraße 36a, 14195 Berlin, Germany
| | - Rainer Haag
- Institut für Chemie und Biochemie, Organische Chemie, Freie Universität Berlin, Takustraße 3, 14195 Berlin, Germany
| | - Hans von Berlepsch
- Core Facility BioSupraMol, Institut für Chemie und Biochemie, Freie Universität Berlin, Fabeckstraße 36a, 14195 Berlin, Germany
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Degirmenci A, Sonkaya Ö, Soylukan C, Karaduman T, Algi F. BODIPY and 2,3-Dihydrophthalazine-1,4-Dione Conjugates As Heavy Atom-Free Chemiluminogenic Photosensitizers. ACS APPLIED BIO MATERIALS 2021; 4:5090-5098. [PMID: 35007057 DOI: 10.1021/acsabm.1c00328] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
We disclose an interesting concept for developing heavy atom-free chemiluminogenic photosensitizers. To accomplish this, conjugates 2 and 3, which are composed of boron-dipyrromethene (BODIPY) and 2,3-dihydrophthalazine-1,4-dione units, are investigated. 2 and 3 are compared in terms of their photophysical properties, chemiluminescence responses, and singlet oxygen production. Strikingly, the results indicate that decoration of BODIPY with the 2,3-dihydrophthalazine-1,4-dione scaffold boosts the singlet oxygen generation. Furthermore, treatment of epidermoid laryngeal carcinoma Hep-2 (Hep-2) cells with conjugates 2 and 3 results in efficient cellular internalization which ensures live- cell imaging of Hep-2 cells. Finally, it is noteworthy that in vitro cytotoxicity assays reveal that both 2 and 3 induce cytotoxicity when illuminated with red light. Thus, 2 and 3 represent heavy atom-free chemiluminogenic photosensitizers.
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Affiliation(s)
- Aysun Degirmenci
- Department of Biotechnology & ASUBTAM M. Bilmez BioNanoTech Lab., Aksaray University, TR-68100 Aksaray, Turkey
| | - Ömer Sonkaya
- Department of Chemistry & ASUBTAM M. Bilmez BioNanoTech Lab., Aksaray University, TR-68100 Aksaray, Turkey
| | - Caner Soylukan
- Department of Biotechnology & ASUBTAM M. Bilmez BioNanoTech Lab., Aksaray University, TR-68100 Aksaray, Turkey
| | - Tuğçe Karaduman
- Department of Biotechnology & ASUBTAM M. Bilmez BioNanoTech Lab., Aksaray University, TR-68100 Aksaray, Turkey
| | - Fatih Algi
- Department of Biotechnology & ASUBTAM M. Bilmez BioNanoTech Lab., Aksaray University, TR-68100 Aksaray, Turkey
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