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Ragab SS. Synthesis and photolysis of new BODIPY derivatives with chelated boron centre. J PORPHYR PHTHALOCYA 2021. [DOI: 10.1142/s1088424621500516] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
New borondipyromethene (BODIPY) derivatives chelated at the boron centre with different catecholate and salicylate ligands were synthesized via substituting the fluoride atoms with the aid of aluminum chloride that activates the boron-fluoride bond for substitution. The photophysical properties of the novel BODIPYs were investigated by normalized UV-vis absorption as well as the fluorescence emission spectra. Moreover, the fluorescence quantum yields of the chelated BODIPYs were also calculated and the ultraviolet irradiation of the salicylate derivatives was studied.
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Affiliation(s)
- Sherif S. Ragab
- Photochemistry Department, Chemical Industries Research Division, National Research Centre (NRC). El behouth Street, Dokki, Giza, 12622, Egypt
- Laboratory for Molecular Photonics, Department of Chemistry, University of Miami, 1301 Memorial Drive, Coral Gables, FL 33146-0431, USA
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2
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Caponetti V, Trzcinski JW, Cantelli A, Tavano R, Papini E, Mancin F, Montalti M. Self-Assembled Biocompatible Fluorescent Nanoparticles for Bioimaging. Front Chem 2019; 7:168. [PMID: 30984740 PMCID: PMC6447614 DOI: 10.3389/fchem.2019.00168] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2018] [Accepted: 03/05/2019] [Indexed: 12/31/2022] Open
Abstract
Fluorescence is a powerful tool for mapping biological events in real-time with high spatial resolution. Ultra-bright probes are needed in order to achieve high sensitivity: these probes are typically obtained by gathering a huge number of fluorophores in a single nanoparticle (NP). Unfortunately this assembly produces quenching of the fluorescence because of short-range intermolecular interactions. Here we demonstrate that rational structural modification of a well-known molecular fluorophore N-(7-nitrobenz-2-oxa-1,3-diazol-4-yl) (NBD) produces fluorophores that self-assemble in nanoparticles in the biocompatible environment without any dramatic decrease of the fluorescence quantum yield. Most importantly, the resulting NP show, in an aqueous environment, a brightness which is more than six orders of magnitude higher than the molecular component in the organic solvent. Moreover, the NP are prepared by nanoprecipitation and they are stabilized only via non-covalent interaction, they are surprisingly stable and can be observed as individual bright spots freely diffusing in solution at a concentration as low as 1 nM. The suitability of the NP as biocompatible fluorescent probes was demonstrated in the case of HeLa cells by fluorescence confocal microscopy and MTS assays.
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Affiliation(s)
- Valeria Caponetti
- Dipartimento di Chimica "Giacomo Ciamician", Università di Bologna, Bologna, Italy
| | - Jakub W Trzcinski
- Dipartimento di Scienze Chimiche, Università di Padova, Padova, Italy
| | - Andrea Cantelli
- Dipartimento di Chimica "Giacomo Ciamician", Università di Bologna, Bologna, Italy
| | - Regina Tavano
- Dipartimento di Scienze Biomediche, Università di Padova, Padova, Italy
| | - Emanuele Papini
- Dipartimento di Scienze Biomediche, Università di Padova, Padova, Italy
| | - Fabrizio Mancin
- Dipartimento di Scienze Chimiche, Università di Padova, Padova, Italy
| | - Marco Montalti
- Dipartimento di Chimica "Giacomo Ciamician", Università di Bologna, Bologna, Italy
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3
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Shurpik DN, Yakimova LS, Gorbachuk VV, Sevastyanov DA, Padnya PL, Bazanova OB, Rizvanov IK, Stoikov II. Hybrid multicyclophanes based on thiacalix[4]arene and pillar[5]arene: synthesis and influence on the formation of polyaniline. Org Chem Front 2018. [DOI: 10.1039/c8qo00652k] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
A series of new tetrakispillar[5]thiacalix[4]arenes was synthesized. Supramolecular assistance of the multicyclophanes in oxidative polymerization of aniline was studied.
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Affiliation(s)
- Dmitriy N. Shurpik
- Kazan Federal University
- A.M. Butlerov Chemistry Institute
- Kazan
- Russian Federation
| | - Luidmila S. Yakimova
- Kazan Federal University
- A.M. Butlerov Chemistry Institute
- Kazan
- Russian Federation
| | | | - Denis A. Sevastyanov
- Kazan Federal University
- A.M. Butlerov Chemistry Institute
- Kazan
- Russian Federation
| | - Pavel L. Padnya
- Kazan Federal University
- A.M. Butlerov Chemistry Institute
- Kazan
- Russian Federation
| | - Olga B. Bazanova
- E. Arbuzov’ Institute of Organic and Physical Chemistry of KSC RAS
- Kazan 420088
- Russian Federation
| | - Il'dar Kh. Rizvanov
- E. Arbuzov’ Institute of Organic and Physical Chemistry of KSC RAS
- Kazan 420088
- Russian Federation
| | - Ivan I. Stoikov
- Kazan Federal University
- A.M. Butlerov Chemistry Institute
- Kazan
- Russian Federation
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4
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Li K, Zhang Y, Qiao B, Tao F, Li T, Ding Y, Raymo FM, Cui Y. Facile fabrication of AIE/AIEE-active fluorescent nanoparticles based on barbituric for cell imaging applications. RSC Adv 2017. [DOI: 10.1039/c7ra03956e] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Compounds 1–4 were synthesized, and the optical properties and mechanisms were investigated. Compound 4 was applied to the cell imaging.
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Affiliation(s)
- Kai Li
- Shandong Provincial Key Laboratory of Fine Chemicals
- Qilu University of Technology
- Jinan 250353
- P.R. China
| | - Yang Zhang
- Laboratory for Molecular Photonics
- Department of Chemistry
- University of Miami
- Coral Gables
- USA
| | - Bing Qiao
- Department of Physics
- University of Miami
- Coral Gables
- USA
| | - Furong Tao
- Shandong Provincial Key Laboratory of Fine Chemicals
- Qilu University of Technology
- Jinan 250353
- P.R. China
| | - Tianduo Li
- Shandong Provincial Key Laboratory of Fine Chemicals
- Qilu University of Technology
- Jinan 250353
- P.R. China
| | - Yunqiao Ding
- Shandong Provincial Key Laboratory of Fine Chemicals
- Qilu University of Technology
- Jinan 250353
- P.R. China
| | - Françisco M. Raymo
- Laboratory for Molecular Photonics
- Department of Chemistry
- University of Miami
- Coral Gables
- USA
| | - Yuezhi Cui
- Shandong Provincial Key Laboratory of Fine Chemicals
- Qilu University of Technology
- Jinan 250353
- P.R. China
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5
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Zhang Y, Tang S, Sansalone L, Baker JD, Raymo FM. A Photoswitchable Fluorophore for the Real-Time Monitoring of Dynamic Events in Living Organisms. Chemistry 2016; 22:15027-15034. [PMID: 27571689 DOI: 10.1002/chem.201603545] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2016] [Indexed: 12/12/2022]
Abstract
This study reports the synthesis of a photoactivatable fluorophore with optimal photochemical and photophysical properties for the real-time tracking of motion in vivo. The photoactivation mechanism designed into this particular compound permits the conversion of an emissive reactant into an emissive product with resolved fluorescence, under mild illumination conditions that are impossible to replicate with conventional switching schemes based on bleaching. Indeed, the supramolecular delivery of these photoswitchable probes into the cellular blastoderm of Drosophila melanogaster embryos allows the real-time visualization of translocating molecules with no detrimental effects on the developing organisms. Thus, this innovative mechanism for fluorescence photoactivation can evolve into a general chemical tool to monitor dynamic processes in living biological specimens.
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Affiliation(s)
- Yang Zhang
- Laboratory for Molecular Photonics, Departments of Biology and Chemistry, University of Miami, 1301 Memorial Drive, Coral Gables, FL, 33146-0431, USA
| | - Sicheng Tang
- Laboratory for Molecular Photonics, Departments of Biology and Chemistry, University of Miami, 1301 Memorial Drive, Coral Gables, FL, 33146-0431, USA
| | - Lorenzo Sansalone
- Laboratory for Molecular Photonics, Departments of Biology and Chemistry, University of Miami, 1301 Memorial Drive, Coral Gables, FL, 33146-0431, USA
| | - James D Baker
- Laboratory for Molecular Photonics, Departments of Biology and Chemistry, University of Miami, 1301 Memorial Drive, Coral Gables, FL, 33146-0431, USA
| | - Françisco M Raymo
- Laboratory for Molecular Photonics, Departments of Biology and Chemistry, University of Miami, 1301 Memorial Drive, Coral Gables, FL, 33146-0431, USA.
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6
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Tang S, Donaphon B, Levitus M, Raymo FM. Structural Implications on the Properties of Self-Assembling Supramolecular Hosts for Fluorescent Guests. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2016; 32:8676-8687. [PMID: 27490893 DOI: 10.1021/acs.langmuir.6b01549] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Nine amphiphilic macromolecules with decyl and oligo(ethylene glycol) side chains, randomly distributed along a common poly(methacrylate) backbone, were synthesized from the radical copolymerization of appropriate methacrylate monomers. The resulting amphiphilic constructs differ in (1) the ratio between their hydrophobic and hydrophilic components, (2) the length of their oligo(ethylene glycol) chains, and/or (3) the molecular weight. When the ratio between hydrophobic and hydrophilic segments is comprised between 6:1 and 1:2, the macromolecules assemble spontaneously into particles with nanoscaled dimensions in neutral buffer and capture hydrophobic borondipyrromethene chromophores in their interior. However, the critical concentration required for the assembly of these supramolecular hosts as well as their hydrodynamic diameter, supramolecular weight, and number of constituent macromolecular building blocks all vary monotonically with the ratio between hydrophobic and hydrophilic components. Specifically, the critical concentration decreases and the other three parameters increase as the relative hydrophobic content raises. Furthermore, an increase in the relative hydrophobic content also discourages interchromophoric interactions between entrapped guests in both ground and excited states as well as delays access of potential quenchers. In fact, these observations demonstrate that the hydrophobic components must be in excess over their hydrophilic counterparts for optimal supramolecular hosts to assemble. Indeed, a ratio of 6:1 between the numbers of decyl and oligo(ethylene glycol) side chains appears to be ideal for this particular structural design. Under these conditions, supramolecular hosts assemble spontaneously even at relatively low polymer concentrations and their fluorescent guests do not escape into the bulk aqueous solution, despite the reversibility of the noncovalent interactions holding the supramolecular container together. Thus, these systematic investigations provide invaluable structural guidelines to design self-assembling supramolecular hosts with optimal composition for the effective encapsulation of fluorescent guests and can lead to ideal delivery vehicles for the transport of imaging probes to target locations in biological samples.
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Affiliation(s)
- Sicheng Tang
- Laboratory for Molecular Photonics, Department of Chemistry, University of Miami , 1301 Memorial Drive, Coral Gables, Florida 33146-0431, United States
| | - Bryan Donaphon
- School of Molecular Sciences and The Biodesign Institute, Arizona State University , Tempe, Arizona 85287-5601, United States
| | - Marcia Levitus
- School of Molecular Sciences and The Biodesign Institute, Arizona State University , Tempe, Arizona 85287-5601, United States
| | - Françisco M Raymo
- Laboratory for Molecular Photonics, Department of Chemistry, University of Miami , 1301 Memorial Drive, Coral Gables, Florida 33146-0431, United States
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7
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Zhang Y, Thapaliya ER, Tang S, Baker JD, Raymo FM. Supramolecular delivery of fluorescent probes in developing embryos. RSC Adv 2016. [DOI: 10.1039/c6ra15368b] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Self-assembling nanocarriers of amphiphilic polymers encapsulate hydrophobic fluorophores in their hydrophobic interior and, upon injection in Drosophila melanogaster embryos, release their cargo into the cellular blastoderm.
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Affiliation(s)
- Yang Zhang
- Laboratory for Molecular Photonics
- Departments of Biology and Chemistry
- University of Miami
- Coral Gables
- USA
| | - Ek Raj Thapaliya
- Laboratory for Molecular Photonics
- Departments of Biology and Chemistry
- University of Miami
- Coral Gables
- USA
| | - Sicheng Tang
- Laboratory for Molecular Photonics
- Departments of Biology and Chemistry
- University of Miami
- Coral Gables
- USA
| | - James D. Baker
- Laboratory for Molecular Photonics
- Departments of Biology and Chemistry
- University of Miami
- Coral Gables
- USA
| | - Françisco M. Raymo
- Laboratory for Molecular Photonics
- Departments of Biology and Chemistry
- University of Miami
- Coral Gables
- USA
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