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Jiang N, Wang Y, Qin A, Sun JZ, Tang BZ. Effective enhancement of the emission efficiency of tetraphenylporphyrin in solid state by tetraphenylethene modification. CHINESE CHEM LETT 2019. [DOI: 10.1016/j.cclet.2018.10.020] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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Rojas JEU, Gerbelli BB, Ribeiro AO, Nantes-Cardoso IL, Giuntini F, Alves WA. Silk fibroin hydrogels for potential applications in photodynamic therapy. Biopolymers 2018; 110:e23245. [PMID: 30548859 DOI: 10.1002/bip.23245] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2018] [Revised: 11/12/2018] [Accepted: 11/13/2018] [Indexed: 01/01/2023]
Abstract
In this study, we prepared translucid hydrogels with different concentrations of silk fibroin, extracted from raw silk fibers, and used them as a matrix to incorporate the photosensitizer 5-(4-aminophenyl)-10,15,20-tris-(4-sulphonatophenyl) porphyrin trisodium for application in photodynamic therapy (PDT). The hydrogels obtained were characterized by rheology, spectrophotometry, and scattering techniques to elucidate the factors involved in the formation of the hydrogel, and to characterize the behavior of silk fibroin (SF) after incorporating of the porphyrin to the matrix. The rheology results demonstrated that the SF hydrogels had a shear thinning behavior. In addition, we were able to verify that the structure of the material was able to be recovered over time after shear deformation. The encapsulation of porphyrins in hydrogels leads to the formation of self-assembled peptide nanostructures that prevent porphyrin aggregation, thereby greatly increasing the generation of singlet oxygen. Also, our findings suggest that porphyrin can diffuse out of the hydrogel and permeate the outer skin layers. This evidence suggests that SF hydrogels could be used as porphyrin encapsulation and as a drug carrier for the sustained release of photosensitizers for PDT.
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Affiliation(s)
- Jose Eduardo U Rojas
- Centro de Ciências Naturais e Humanas, Universidade Federal do ABC, Santo André, Brazil
| | - Barbara B Gerbelli
- Centro de Ciências Naturais e Humanas, Universidade Federal do ABC, Santo André, Brazil
| | - Anderson O Ribeiro
- Centro de Ciências Naturais e Humanas, Universidade Federal do ABC, Santo André, Brazil
| | | | - Francesca Giuntini
- School of Pharmacy and Biomolecular Sciences, Liverpool John Moores University, Liverpool, UK
| | - Wendel A Alves
- Centro de Ciências Naturais e Humanas, Universidade Federal do ABC, Santo André, Brazil
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Moura NMM, Cuerva C, Cavaleiro JAS, Mendes RF, Almeida Paz FA, Cano M, Neves MGPMS, Lodeiro C. Metallomesogens with Luminescent Behaviour: Palladium Complexes Derived from Alkylamide Tetraarylporphyrins. Chempluschem 2016; 81:262-273. [DOI: 10.1002/cplu.201500557] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2015] [Indexed: 11/08/2022]
Affiliation(s)
- Nuno M. M. Moura
- Department of Chemistry and QOPNA; University of Aveiro; Campus de Santiago 3810-193 Aveiro Portugal
- BIOSCOPE Group; REQUIMTE-CQFB; Chemistry Department Faculty of Science and Technology; University NOVA of Lisbon; 2829-516 Caparica Portugal
- ProteoMass Scientific Society; Madan Park; Rua dos Inventores 2825-182 Caparica Portugal
| | - Cristián Cuerva
- Departamento de Química Inorgánica I; Facultad de Ciencias Químicas Universidad Complutense; 28040 Madrid Spain
| | - José A. S. Cavaleiro
- Department of Chemistry and QOPNA; University of Aveiro; Campus de Santiago 3810-193 Aveiro Portugal
| | - Ricardo F. Mendes
- Department of Chemistry and CICECO; University of Aveiro; Campus de Santiago 3810-193 Aveiro Portugal
| | - Filipe A. Almeida Paz
- Department of Chemistry and CICECO; University of Aveiro; Campus de Santiago 3810-193 Aveiro Portugal
| | - Mercedes Cano
- Departamento de Química Inorgánica I; Facultad de Ciencias Químicas Universidad Complutense; 28040 Madrid Spain
| | - M. Graça P. M. S. Neves
- Department of Chemistry and QOPNA; University of Aveiro; Campus de Santiago 3810-193 Aveiro Portugal
| | - Carlos Lodeiro
- BIOSCOPE Group; REQUIMTE-CQFB; Chemistry Department Faculty of Science and Technology; University NOVA of Lisbon; 2829-516 Caparica Portugal
- ProteoMass Scientific Society; Madan Park; Rua dos Inventores 2825-182 Caparica Portugal
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Shu J, Qiu Z, Zhuang J, Xu M, Tang D. In Situ Generation of Electron Donor to Assist Signal Amplification on Porphyrin-Sensitized Titanium Dioxide Nanostructures for Ultrasensitive Photoelectrochemical Immunoassay. ACS APPLIED MATERIALS & INTERFACES 2015; 7:23812-23818. [PMID: 26451956 DOI: 10.1021/acsami.5b08742] [Citation(s) in RCA: 61] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
An ultrasensitive photoelectrochemical (PEC) immunoassay protocol for quantitative detection of low-abundant proteins at a low potential was designed by utilizing porphyrin-sensitized titanium dioxide (TiO2) nanostructures. Experimental results demonstrated that the water-soluble 5,10,15,20-tetra(4-sulfophenyl)-21H,23H-porphyrin (TSPP) could be bound onto titanium dioxide via the sulfonic group. TSPP-sensitized TiO2 nanostructures exhibited better photoelectrochemical responses and stability in comparison with TiO2 nanoparticles alone under continuous illumination. Using carcinoembryonic antigen (CEA) as a model analyte, a typical PEC immunosensor by using TSPP-TiO2 as the affinity support of anti-CEA capture antibody (Ab1) to facilitate the improvement of photocurrent response was developed. Bioconjugates of secondary antibody and glucose oxidase with gold nanoparticles (Ab2/GOx-AuNPs) was introduced by an antigen-antibody immunoreaction. AuNP acted as a powerful scaffold to bind with bioactive molecules, while GOx catalyzed glucose to in situ generate hydrogen peroxide (H2O2). The generated H2O2 as a sacrificial electron donor could be oxidized by the photogenerated holes to assist the signal amplification at a low potential under light excitation, thus eliminating interference from other species coexisting in the samples. Under optimal conditions, the PEC immunosensor showed a good linear relationship ranging from 0.02 to 40 ng mL(-1) with a low detection limit of 6 pg mL(-1) CEA. The precision, reproducibility, and specificity were acceptable. In addition, the method accuracy was also evaluated for quantitatively monitoring human serum samples, giving results matching with the referenced CEA ELISA kit.
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Affiliation(s)
- Jian Shu
- Key Laboratory of Analysis and Detection for Food Safety (MOE & Fujian Province), Institute of Nanomedicine and Nanobiosensing, Department of Chemistry, Fuzhou University , Fuzhou 350108, People's Republic of China
| | - Zhenli Qiu
- Key Laboratory of Analysis and Detection for Food Safety (MOE & Fujian Province), Institute of Nanomedicine and Nanobiosensing, Department of Chemistry, Fuzhou University , Fuzhou 350108, People's Republic of China
| | - Junyang Zhuang
- Key Laboratory of Analysis and Detection for Food Safety (MOE & Fujian Province), Institute of Nanomedicine and Nanobiosensing, Department of Chemistry, Fuzhou University , Fuzhou 350108, People's Republic of China
| | - Mingdi Xu
- Key Laboratory of Analysis and Detection for Food Safety (MOE & Fujian Province), Institute of Nanomedicine and Nanobiosensing, Department of Chemistry, Fuzhou University , Fuzhou 350108, People's Republic of China
| | - Dianping Tang
- Key Laboratory of Analysis and Detection for Food Safety (MOE & Fujian Province), Institute of Nanomedicine and Nanobiosensing, Department of Chemistry, Fuzhou University , Fuzhou 350108, People's Republic of China
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Ghosh M, Mora AK, Nath S, Chandra AK, Hajra A, Sinha S. Photophysics of Soret-excited free base tetraphenylporphyrin and its zinc analog in solution. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2013; 116:466-472. [PMID: 23973595 DOI: 10.1016/j.saa.2013.07.047] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/20/2013] [Accepted: 07/22/2013] [Indexed: 06/02/2023]
Abstract
Photophysical properties of free base tetraphenylporphyrin and its zinc analog are investigated in detail in solvents of varying polarity by using steady state and time-resolved techniques. Both the porphyrins are excited at the Soret band to have better signal-to-noise ratio. Also, the fluorescence emission measurements are carried out by using dilute solutions (~10(-7)mol/L) of the fluorophores in order to minimize the self-quenching effect. It is observed that the steady state absorption and emission characteristics of the porphyrin molecules are mainly affected by polarizability (via refractive index) rather than polarity (via dielectric constant) of the moderate to highly polar solvents. As the molecules are highly symmetric in the ground state, the associated dipole moments are found to be very low from quantum chemical calculations performed by density functional theory method by using Gaussian 03 package. The dipole moments associated with the first excited singlet state of the porphyrins are computed by applying solvatochromic Stokes' shift method. To the best of our knowledge, this is the first attempt to calculate the excited state dipole moments of the porphyrins used in the present investigations. Also, fluorescence quantum yield, fluorescence lifetime of the first excited singlet state, radiative and non-radiative rate constants of the porphyrins are reported in solvents of varying polarity.
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Affiliation(s)
- Mihir Ghosh
- Integrated Science Education and Research Centre, Siksha-Bhavana, Visva-Bharati, Santiniketan 731 235, India
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Huber SM, Seyfried MS, Linden A, Luedtke NW. Excitonic luminescence of hemiporphyrazines. Inorg Chem 2012; 51:7032-8. [PMID: 22702723 DOI: 10.1021/ic2017566] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Metal-free hemiporphyrazine (HpH(2)) is a notoriously insoluble material possessing interesting photophysical properties. Here we report the synthesis, structure, and photophysical properties of an octahedral zinc trans-ditriflate hemiporphyrazine complex "HpH(2)Zn(OTf)(2)" that contains a neutral hemiporphyrazine ligand. The photophysical properties of hemiporphyrazine are largely unaffected by introduction of zinc(II) triflate, but a dramatic increase in solubility is observed. HpH(2)Zn(OTf)(2) therefore provides a convenient model system to evaluate the impact of aggregation on the photophysical properties of hemiporphyrazine. Soluble aggregates and crystalline materials containing planar hemiporphyrazines exhibit relatively strong absorbance of visible light (450-600 nm) and red luminescence (600-700 nm). Hemiporphyrazine monohydrate (HpH(2)·H(2)O), in contrast, has a nonplanar "saddle-shaped" conformation that exhibits very little absorbance of visible light in solution or in the solid state. Upon photoexcitation at 380 nm, HpH(2)Zn(OTf)(2) and HpH(2) exhibit multiwavelength emissions centered at 450 and 650 nm. Emissions at 450 nm are highly anisotropic, while emissions at 650 nm are fully depolarized with respect to a plane-polarized excitation source. Taken together, our results suggest that excitonic coupling of aggregated and crystalline hemiporphyrazines results in increased absorbance and emission of visible light from S(0) ↔ S(1) transitions that are usually symmetry forbidden in isolated species. In contrast to previously proposed theories involving excited-state intramolecular proton transfer, we propose that the multiple-wavelength luminescent emissions of HpH(2)Zn(OTf)(2) and HpH(2) are due to emissive S(1) and S(2) states in aggregated and crystalline hemiporphyrazines. These results may provide a better understanding of the nonlinear optical properties of these materials in solution and in the solid state.
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Affiliation(s)
- Sabrina M Huber
- Institute of Organic Chemistry, University of Zürich, Winterthurerstrasse 190, Switzerland, 8057
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Jiang L, Zaenglein RA, Engle JT, Mittal C, Hartley CS, Ziegler CJ, Wang H. Water-soluble ionic benzoporphyrins. Chem Commun (Camb) 2012; 48:6927-9. [PMID: 22673796 DOI: 10.1039/c2cc31057k] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Novel ionic water-soluble tetrabenzoporphyrins have been successfully synthesized via a cascade reaction based on the Heck reaction. The UV-Vis spectra of these porphyrins displayed red-shifted and broadened Soret bands, and significantly enhanced Q bands. These porphyrins are highly water soluble.
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Affiliation(s)
- Lin Jiang
- Department of Chemistry and Biochemistry, Miami University, Oxford, OH 45056, USA
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Roldán-Carmona C, González-Delgado AM, Guerrero-Martínez A, Cola LD, Giner-Casares JJ, Pérez-Morales M, Martín-Romero MT, Camacho L. Molecular organization and effective energy transfer in iridium metallosurfactant–porphyrin assemblies embedded in Langmuir–Schaefer films. Phys Chem Chem Phys 2011; 13:2834-41. [DOI: 10.1039/c0cp01683g] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Garg K, Singh A, Debnath A, Nayak S, Chattopadhyay S, Aswal D, Hayakawa Y, Gupta S, Yakhmi J. Bis-porphyrin films as ppb level chemiresistive sensors. Chem Phys Lett 2010. [DOI: 10.1016/j.cplett.2010.02.008] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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