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Francis S, Rajith L. Selective Fluorescent Sensing of Adenine Via the Emissive Enhancement of a Simple Cobalt Porphyrin. J Fluoresc 2021; 31:577-586. [PMID: 33481138 DOI: 10.1007/s10895-021-02685-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2020] [Accepted: 01/11/2021] [Indexed: 11/24/2022]
Abstract
Porphyrins absorb strongly in the visible region and are also excellent fluorophores that emit in the visible region that make them excellent candidates for fluorescence sensing and in vivo imaging. This work describes the fluorescence determination of adenine using cobalt complex of a simple porphyrin. Tetraphenylporphyrin (TPP) and tetraphenylpophyrinatocobalt(II) (CoTPP) were synthesized and characterised. TPP on metallation with cobalt resulted in the red shift of fluorescence emission in the region 652 nm and 716 nm and showed an enhancement in the emission peaks with the addition of the nucleobase, adenine. CoTPP is found to be an efficient fluorescent sensor for adenine in DMF solvent. The fluorescence enhancement is due to the formation of the ground state complex formation between adenine and CoTPP, which is supported by experimental evidences from UV- visible spectra, time resolved fluorescence life time measurements etc. The detection limit of adenine was found to be 4.2 μM using the CoTPP fluorescent probe. The proposed sensor is found to be highly selective for adenine in presence of other nitrogen bases like guanine, cytosine, uracil, thymine, alanine, histidine etc. in 1:1 concentration.
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Affiliation(s)
- Shijo Francis
- Department of Applied Chemistry, Cochin University of Science and Technology, Kochi, Kerala, 682022, India
| | - Leena Rajith
- Department of Applied Chemistry, Cochin University of Science and Technology, Kochi, Kerala, 682022, India.
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Chevrier M, Fattori A, Lasser L, Kotras C, Rose C, Cangiotti M, Beljonne D, Mehdi A, Surin M, Lazzaroni R, Dubois P, Ottaviani MF, Richeter S, Bouclé J, Clément S. In Depth Analysis of Photovoltaic Performance of Chlorophyll Derivative-Based "All Solid-State" Dye-Sensitized Solar Cells. Molecules 2020; 25:E198. [PMID: 31947792 PMCID: PMC6983229 DOI: 10.3390/molecules25010198] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2019] [Revised: 12/21/2019] [Accepted: 12/28/2019] [Indexed: 11/16/2022] Open
Abstract
Chlorophyll a derivatives were integrated in "all solid-state" dye sensitized solar cells (DSSCs) with a mesoporous TiO2 electrode and 2',2',7,7'-tetrakis[N,N-di(4-methoxyphenyl)amino]-9,9'-spirobifluorene as the hole-transport material. Despite modest power conversion efficiencies (PCEs) between 0.26% and 0.55% achieved for these chlorin dyes, a systematic investigation was carried out in order to elucidate their main limitations. To provide a comprehensive understanding of the parameters (structure, nature of the anchoring group, adsorption …) and their relationship with the PCEs, density functional theory (DFT) calculations, optical and photovoltaic studies and electron paramagnetic resonance analysis exploiting the 4-carboxy-TEMPO spin probe were combined. The recombination kinetics, the frontier molecular orbitals of these DSSCs and the adsorption efficiency onto the TiO2 surface were found to be the key parameters that govern their photovoltaic response.
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Affiliation(s)
- Michèle Chevrier
- ICGM, Univ. Montpellier, CNRS, ENSCM, CC1701, Place Eugène Bataillon, 34095 Montpellier, France; (M.C.); (C.K.); (C.R.); (A.M.)
- Service des Matériaux Polymères et Composites (SMPC), Centre d’Innovation et de Recherche en Matériaux et Polymères (CIRMAP), Université de Mons, 20 Place du Parc, 7000 Mons, Belgium;
| | - Alberto Fattori
- Department of Pure and Applied Sciences (DiSPeA), University of Urbino, 61029 Urbino, Italy; (A.F.); (M.C.); (M.F.O.)
| | - Laurent Lasser
- Laboratory for Chemistry of Novel Materials, CIRMAP, University of Mons UMONS, 20 Place du Parc, 7000 Mons, Belgium; (L.L.); (D.B.); (M.S.); (R.L.)
| | - Clément Kotras
- ICGM, Univ. Montpellier, CNRS, ENSCM, CC1701, Place Eugène Bataillon, 34095 Montpellier, France; (M.C.); (C.K.); (C.R.); (A.M.)
- Laboratory for Chemistry of Novel Materials, CIRMAP, University of Mons UMONS, 20 Place du Parc, 7000 Mons, Belgium; (L.L.); (D.B.); (M.S.); (R.L.)
| | - Clémence Rose
- ICGM, Univ. Montpellier, CNRS, ENSCM, CC1701, Place Eugène Bataillon, 34095 Montpellier, France; (M.C.); (C.K.); (C.R.); (A.M.)
| | - Michela Cangiotti
- Department of Pure and Applied Sciences (DiSPeA), University of Urbino, 61029 Urbino, Italy; (A.F.); (M.C.); (M.F.O.)
| | - David Beljonne
- Laboratory for Chemistry of Novel Materials, CIRMAP, University of Mons UMONS, 20 Place du Parc, 7000 Mons, Belgium; (L.L.); (D.B.); (M.S.); (R.L.)
| | - Ahmad Mehdi
- ICGM, Univ. Montpellier, CNRS, ENSCM, CC1701, Place Eugène Bataillon, 34095 Montpellier, France; (M.C.); (C.K.); (C.R.); (A.M.)
| | - Mathieu Surin
- Laboratory for Chemistry of Novel Materials, CIRMAP, University of Mons UMONS, 20 Place du Parc, 7000 Mons, Belgium; (L.L.); (D.B.); (M.S.); (R.L.)
| | - Roberto Lazzaroni
- Laboratory for Chemistry of Novel Materials, CIRMAP, University of Mons UMONS, 20 Place du Parc, 7000 Mons, Belgium; (L.L.); (D.B.); (M.S.); (R.L.)
| | - Philippe Dubois
- Service des Matériaux Polymères et Composites (SMPC), Centre d’Innovation et de Recherche en Matériaux et Polymères (CIRMAP), Université de Mons, 20 Place du Parc, 7000 Mons, Belgium;
| | - Maria Francesca Ottaviani
- Department of Pure and Applied Sciences (DiSPeA), University of Urbino, 61029 Urbino, Italy; (A.F.); (M.C.); (M.F.O.)
| | - Sébastien Richeter
- ICGM, Univ. Montpellier, CNRS, ENSCM, CC1701, Place Eugène Bataillon, 34095 Montpellier, France; (M.C.); (C.K.); (C.R.); (A.M.)
| | - Johann Bouclé
- CNRS, Univ. Limoges, XLIM, UMR 7252, F-87000 Limoges, France
| | - Sébastien Clément
- ICGM, Univ. Montpellier, CNRS, ENSCM, CC1701, Place Eugène Bataillon, 34095 Montpellier, France; (M.C.); (C.K.); (C.R.); (A.M.)
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Yu J, Jiang Z, Hao Y, Zhu Q, Zhao M, Jiang X, Zhao J. Two dimensional self-assembly zinc porphyrin and zinc phthalocyanine heterojunctions with record high power conversion efficiencies. JOURNAL OF PHYSICS. CONDENSED MATTER : AN INSTITUTE OF PHYSICS JOURNAL 2018; 30:25LT02. [PMID: 29762131 DOI: 10.1088/1361-648x/aac502] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Compared to inorganic solar cells, the power conversion efficiencies (PCEs) of organic solar cells are much lower, but they are compensated by many merits such as lower cost, less weight, and tunable structures, making them prospective for further applications. Porphyrin and phthalocyanine are the two most significant materials for organic solar cells due to their strong light-absorbing properties and semiconductor characteristics. However, there is little research on the 2D heterojunction solar cells based on these two materials, meanwhile the PCEs of them are still low. Here we have self-assembled several 2D zinc porphyrins (ZnPors) and performed first-principles simulation to demonstrate their good stability, suitable light harvesting, and high charge carrier mobility. By perfectly matching lattice constants and molecular energy levels between those 2D ZnPors and our previous proposed zinc phthalocyanines (ZnPcs), 11 type-II organic heterojunctions are constructed to further improve their charge separation capability. Those advantages endow 2D ZnPors and ZnPcs appreciable PCEs for solar cells. Among them, the theoretical PCE of 2D ZnPors/ZnPcs heterojunctions achieves as high as 19.84%, which exceeds all reported organic solar cells, and even approaches the PCEs of inorganic solar cells. These results indicate that our 2D ZnPors and 2D ZnPcs are good candidate materials for future organic solar cells.
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Affiliation(s)
- Junting Yu
- Key Laboratory of Materials Modification by Laser, Ion and Electron Beams (Dalian University of Technology), Ministry of Education, Dalian 116024, People's Republic of China
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Virkki K, Tervola E, Medel M, Torres T, Tkachenko NV. Effect of Co-Adsorbate and Hole Transporting Layer on the Photoinduced Charge Separation at the TiO 2-Phthalocyanine Interface. ACS OMEGA 2018; 3:4947-4958. [PMID: 31458711 PMCID: PMC6641689 DOI: 10.1021/acsomega.8b00600] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/29/2018] [Accepted: 04/26/2018] [Indexed: 06/10/2023]
Abstract
Understanding the primary processes of charge separation (CS) in solid-state dye-sensitized solar cells (DSSCs) and, in particular, analysis of the efficiency losses during these primary photoreactions is essential for designing new and efficient photosensitizers. Phthalocyanines (Pcs) are potentially interesting sensitizers having absorption in the red side of the optical spectrum and known to be efficient electron donors. However, the efficiencies of Pc-sensitized DSSCs are lower than that of the best DSSCs, which is commonly attributed to the aggregation tendency of Pcs. In this study, we employ ultrafast spectroscopy to discover why and how much does the aggregation affect the efficiency. The samples were prepared on a standard fluorine-doped tin oxide (FTO) substrates covered by a porous layer of TiO2 nanoparticles, functionalized by a Pc sensitizer and filled by a hole transporting material (Spiro-MeOTAD). The study demonstrates that the aggregation can be suppressed gradually by using co-adsorbates, such as chenodeoxycholic acid (CDCA) and oleic acid, but rather high concentrations of co-adsorbate is required. Gradually, a few times improvement of quantum efficiency was observed at sensitizer/co-adsorbate ratio Pc/CDCA = 1:10 and higher. The time-resolved spectroscopy studies were complemented by standard photocurrent measurements of the same sample structures, which also confirmed gradual increase in photon-to-current conversion efficiency on mixing Pc with CDCA.
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Affiliation(s)
- Kirsi Virkki
- Laboratory
of Chemistry and Bioengineering, Tampere
University of Technology, P.O. Box 541, FI-33101 Tampere, Finland
| | - Essi Tervola
- Laboratory
of Chemistry and Bioengineering, Tampere
University of Technology, P.O. Box 541, FI-33101 Tampere, Finland
| | - Maria Medel
- Departamento
de Química Orgánica, Universidad
Autónoma de Madrid, Cantoblanco, E-28049 Madrid, Spain
| | - Tomás Torres
- Departamento
de Química Orgánica, Universidad
Autónoma de Madrid, Cantoblanco, E-28049 Madrid, Spain
- Institute
for Advanced Research in Chemical Sciences (IAdChem), Universidad Autónoma de Madrid, 28049 Madrid, Spain
- IMDEA
Nanociencia, C/Faraday,
9, Cantoblanco, 28049 Madrid, Spain
| | - Nikolai V. Tkachenko
- Departamento
de Química Orgánica, Universidad
Autónoma de Madrid, Cantoblanco, E-28049 Madrid, Spain
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Bodedla GB, Wang H, Chang S, Chen S, Chen T, Zhao J, Wong WK, Zhu X. β-Functionalized Imidazole-Fused Porphyrin-Donor-Based Dyes: Effect of π-Linker and Acceptor on Optoelectronic and Photovoltaic Properties. ChemistrySelect 2018. [DOI: 10.1002/slct.201702652] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Govardhana Babu Bodedla
- Department of Chemistry; Hong Kong Baptist University; Waterloo Road, Kowloon Tong Hong Kong
| | - Hongda Wang
- Department of Chemistry; Hong Kong Baptist University; Waterloo Road, Kowloon Tong Hong Kong
| | - Shuai Chang
- School of Chemistry and Materials Science; University of Science and Technology of China, Hefei; Anhui 230026, P. R. China
| | - Song Chen
- Department of Chemistry; Hong Kong Baptist University; Waterloo Road, Kowloon Tong Hong Kong
| | - Tao Chen
- School of Chemistry and Materials Science; University of Science and Technology of China, Hefei; Anhui 230026, P. R. China
| | - Jianzhang Zhao
- School of Chemical Engineering and State Key Laboratory of Fine Chemicals; Dalian University of Technology; Dalian 116024, P. R. China
| | - Wai-Kwok Wong
- Department of Chemistry; Hong Kong Baptist University; Waterloo Road, Kowloon Tong Hong Kong
| | - Xunjin Zhu
- Department of Chemistry; Hong Kong Baptist University; Waterloo Road, Kowloon Tong Hong Kong
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