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Domena JB, Ferreira BCLB, Chen J, Bartoli M, Tagliaferro A, Vanni S, Graham RM, Leblanc RM. The art of simplicity: Water-soluble porphyrin-like carbon dots self-assemble into mesmerizing red glow. Colloids Surf B Biointerfaces 2024; 234:113719. [PMID: 38181692 DOI: 10.1016/j.colsurfb.2023.113719] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2023] [Revised: 11/24/2023] [Accepted: 12/19/2023] [Indexed: 01/07/2024]
Abstract
In this new study, we present an intriguing development in the field of theranostics: the simplistic self-assembly of red-emissive amphiphilic porphyrin-like carbon dots (P-CDs). By harnessing their exceptional photophysical properties, we have revealed a strong candidate as the ideal photosensitizer (PS) for applications, particularly in the realm of imaging. Spanning a remarkable size average between 1-4 nm, these particles exhibit both highly stable and unparalleled emission characteristics between 650 and 715 nm in water in comparison to current carbon dots (CDs) available. Lastly, these CDs were fairly non-toxic when tested against normal human cell lines as well as were found to have favorable imaging capabilities in zebrafish embryo.
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Affiliation(s)
- Justin B Domena
- Department of Chemistry, University of Miami, Coral Gables, FL 33146, USA
| | | | - Jiuyan Chen
- Department of Chemistry, University of Miami, Coral Gables, FL 33146, USA
| | - M Bartoli
- Department of Applied Science and Technology, Politecnico di Torino, Italy
| | - A Tagliaferro
- Department of Applied Science and Technology, Politecnico di Torino, Italy
| | - Steven Vanni
- Department of Neurological Surgery, Miller School of Medicine, University of Miami, Miami, FL 33136, USA; HCA Florida University Hospital, 3476 S University Dr., Davie, FL 33328, USA; Department of Medicine, Dr. Kiran C. Patel College of Allopathic Medicine, Nova Southeastern University, Davie, USA
| | - Regina M Graham
- Department of Medicine, Dr. Kiran C. Patel College of Allopathic Medicine, Nova Southeastern University, Davie, USA
| | - Roger M Leblanc
- Department of Chemistry, University of Miami, Coral Gables, FL 33146, USA.
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Lopes JMS, Batista AA, Araujo PT, Neto NMB. Supramolecular porphyrin as an improved photocatalyst for chloroform decomposition. RSC Adv 2023; 13:5473-5482. [PMID: 36793300 PMCID: PMC9924222 DOI: 10.1039/d2ra07720e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2022] [Accepted: 02/02/2023] [Indexed: 02/17/2023] Open
Abstract
In this work, the outlying decoration of the free-base meso-(4-tetra) pyridyl porphyrin (H2TPyP) with the RuCl(dppb)(5,5'-Me-bipy) ruthenium complex (here named Supra-H2TPyP) is observed as an improved molecular photocatalyst for dye-mediated chloroform (CHCl3) decomposition via one-photon absorption operating in the visible spectral range (532 nm and 645 nm). Supra-H2TPyP offers a better option for CHCl3 photodecomposition when compared to the same process mediated by pristine H2TPyP, which requires either excited-state- or UV absorption. The chloroform photodecomposition rates for Supra-H2TPyP as well as its excitation mechanisms are explored as a function of distinct laser irradiation conditions.
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Affiliation(s)
- J. M. S. Lopes
- Department of Physics, Federal University of RoraimaBoa VistaRRBrazil,Institute of Natural Sciences, Graduate Program in Physics, Federal University of ParáBelémPABrazil
| | - A. A. Batista
- Department of Chemistry, Federal University of São CarlosSão CarlosSPBrazil
| | - P. T. Araujo
- Department of Physics and Astronomy, University of AlabamaTuscaloosaAlabamaUSA
| | - N. M. Barbosa Neto
- Institute of Natural Sciences, Graduate Program in Physics, Federal University of ParáBelémPABrazil
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Lopes J, Machado A, Batista A, Iglesias B, Araujo P, Barbosa Neto N. Fluorinated phenyl meso-substituents regulating excited state absorption-driven protonation of free-base porphyrins. J Photochem Photobiol A Chem 2023. [DOI: 10.1016/j.jphotochem.2023.114568] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
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Muthu M, Tiwari S. Spectroscopic investigation of preferential solvation of N-confused tetraphenylporphyrinin binary mixtures of dichloromethane with organic cosolvents. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2022; 283:121718. [PMID: 35963116 DOI: 10.1016/j.saa.2022.121718] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/13/2022] [Revised: 07/24/2022] [Accepted: 08/02/2022] [Indexed: 06/15/2023]
Abstract
Spectroscopic behaviour of porphyrin is known to be sensitive to the choice of the solvent and has been used to probe solvation phenomena. The UV-visible spectra of N-confused tetraphenylporphyrin are observed in a series of binary solvent mixtures - (dichloromethane + diethyl ether), (dichloromethane + chlorobenzene) and (dichloromethane + ethyl acetate). The resulting ET scale for NCTPP solvation indicates nonlinear behaviour and preferential solvation by a solvent-solvent complex in all the three solvents - with the dichloromethane + ethyl acetate system showing the largest deviation from ideality. The data is fitted to the model based on solvent exchange equilibria for determining the preferential solvation parameters which are specific to the probe as well as the identity of solvents in the binary mixture. Further analysis using polarity parameters from literature indicate that the solvation of NCTPP in the (dichloromethane + ethyl acetate) mixture is dependent on the hydrogen bond accepting capacity and polarizability of the medium. Excess spectra derived from ATR-FTIR measurement of dichloromethane + ethyl acetate solutions lead to important inferences about the structure and role of solvent-solvent interactions responsible for the preferential solvation.
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Affiliation(s)
- Mariammal Muthu
- Department of Chemistry, Institute of Chemical Technology, Mumbai 400019, India
| | - Shraeddha Tiwari
- Department of Chemistry, Institute of Chemical Technology, Mumbai 400019, India.
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Valdo AKSM, de Santana RC, Maia LJQ, Guimarães FF, Guedes GP, Martins FT. Inspecting the role of synthons in the electronic transition of N-heterocyclic compounds. J Mol Struct 2022. [DOI: 10.1016/j.molstruc.2022.132530] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Lopes JMS, Reis JRT, Machado AEH, Leite THO, Batista AA, Acunha TV, Iglesias BA, Araujo PT, Barbosa Neto NM. Influence of the meso-substituents on the spectral features of free-base porphyrin. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2020; 238:118389. [PMID: 32417643 DOI: 10.1016/j.saa.2020.118389] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/12/2019] [Revised: 04/14/2020] [Accepted: 04/18/2020] [Indexed: 06/11/2023]
Abstract
The role of meso-substituents on the spectral features of free-base porphyrins is explored. Meso-tetra(4-pyridyl)porphyrin is compared with meso-tetra(2-thienyl)porphyrin and meso-tetra(pentafluorophenyl)porphyrin. Our results indicate that some of the asymmetric Q-bands in the free-base porphyrin tend to become symmetric relative to the adopted meso-substituent. The results show that the outlying perturbations lead the free-base quasi-degenerated Qx1, Qx2, Qy1, and Qy2 bands to be closer in energy. Combined, absorption, fluorescence and Raman spectroscopies endorse our conclusions showing that both the frequencies and the Huang-Rhys factors associated with every vibronic progression are noticeably affected by the investigated meso-substituents. Our results confirm that the B-band is also multi-featured in agreement with what is found for the Q-bands.
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Affiliation(s)
- J M S Lopes
- Institute of Natural Sciences, Graduate Program in Physics, Federal University of Pará, Belém, PA, Brazil.
| | - J R T Reis
- Institute of Natural Sciences, Graduate Program in Physics, Federal University of Pará, Belém, PA, Brazil
| | - A E H Machado
- Institute of Chemistry, Federal University of Uberlândia, Uberlândia, MG, Brazil; Federal University of Catalão, Av. Lamartine Pinto de Avelar, 1120, CEP 75704-020, Catalão, GO, Brazil
| | - T H O Leite
- Department of Chemistry, Federal University of São Carlos, São Carlos, SP, Brazil
| | - A A Batista
- Department of Chemistry, Federal University of São Carlos, São Carlos, SP, Brazil
| | - T V Acunha
- Bioinorganic and Porphyrinoid Materials Laboratory, Department of Chemistry, Federal University of Santa Maria, Santa Maria, RS, Brazil
| | - B A Iglesias
- Bioinorganic and Porphyrinoid Materials Laboratory, Department of Chemistry, Federal University of Santa Maria, Santa Maria, RS, Brazil
| | - P T Araujo
- Institute of Natural Sciences, Graduate Program in Physics, Federal University of Pará, Belém, PA, Brazil; Department of Physics and Astronomy, University of Alabama, Tuscaloosa, AL, United States.
| | - N M Barbosa Neto
- Institute of Natural Sciences, Graduate Program in Physics, Federal University of Pará, Belém, PA, Brazil.
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