1
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Joseph J, Bauroth S, Charisiadis A, Charalambidis G, Coutsolelos AG, Guldi DM. Cascades of energy and electron transfer in a panchromatic absorber. NANOSCALE 2022; 14:9304-9312. [PMID: 35758634 DOI: 10.1039/d2nr02404g] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
The investigation of molecular model systems is fundamental towards a deeper understanding of key photochemical steps in natural photosynthesis. Herein, we report an entirely non-covalent triad consisting of boron dipyrromethene (BDP), porphyrin (ZnP), and fullerene (C60). Non-covalent binding motifs such as an amidinium-carboxylate salt bridge as well as axial pyridyl-metal coordination offer substantial electronic coupling and establish efficient pathways for photoactivated energy and electron transfer processes along a well-tuned gradient. Experimental findings from steady-state and time-resolved spectroscopic assays, as well as (spectro-)electrochemical measurements corroborate the formation of BDP|ZnP|C60 in solution, on one hand, and significant communication in the excited states, on the other hand. BDP acts as an energy harvesting antenna towards ZnP, which eventually undergoes charge separation with C60 by electron transfer from ZnP to C60. Notably, full spectral deconvolution of the transient species was achieved, supporting the successful self-assembly as well as giving a clear view onto the occurring photophysical processes and their spectral footprints upon photoexcitation.
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Affiliation(s)
- Jan Joseph
- Department of Chemistry and Pharmacy and Interdisciplinary Center for Molecular Materials, Friedrich-Alexander-Universität, 91058 Erlangen, Germany.
| | - Stefan Bauroth
- Department of Chemistry and Pharmacy and Interdisciplinary Center for Molecular Materials, Friedrich-Alexander-Universität, 91058 Erlangen, Germany.
| | - Asterios Charisiadis
- Department of Chemistry, University of Crete, Laboratory of Bioinorganic Chemistry, Voutes Campus, P.O. Box 2208, 71003 Heraklion, Crete, Greece
| | - Georgios Charalambidis
- Department of Chemistry, University of Crete, Laboratory of Bioinorganic Chemistry, Voutes Campus, P.O. Box 2208, 71003 Heraklion, Crete, Greece
| | - Athanassios G Coutsolelos
- Department of Chemistry, University of Crete, Laboratory of Bioinorganic Chemistry, Voutes Campus, P.O. Box 2208, 71003 Heraklion, Crete, Greece
- Institute of Electronic Structure and Laser (IESL)Foundation for Research and Technology - Hellas (FORTH), Vassilika Vouton, GR 70013 Heraklion, Crete, Greece
| | - Dirk M Guldi
- Department of Chemistry and Pharmacy and Interdisciplinary Center for Molecular Materials, Friedrich-Alexander-Universität, 91058 Erlangen, Germany.
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2
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Fathalla M. Porphyrin-Bodipy light harvesting [3]rotaxane. J PORPHYR PHTHALOCYA 2022. [DOI: 10.1142/s1088424622500249] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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3
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Madrid-Úsuga D, Ortiz A, Reina JH. Photophysical Properties of BODIPY Derivatives for the Implementation of Organic Solar Cells: A Computational Approach. ACS OMEGA 2022; 7:3963-3977. [PMID: 35155892 PMCID: PMC8829925 DOI: 10.1021/acsomega.1c04598] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/23/2021] [Accepted: 11/22/2021] [Indexed: 06/14/2023]
Abstract
Solar cells based on organic compounds are a proven emergent alternative to conventional electrical energy generation. Here, we provide a computational study of power conversion efficiency optimization of boron dipyrromethene (BODIPY) derivatives by means of their associated open-circuit voltage, short-circuit density, and fill factor. In doing so, we compute for the derivatives' geometrical structures, energy levels of frontier molecular orbitals, absorption spectra, light collection efficiencies, and exciton binding energies via density functional theory (DFT) and time-dependent (TD)-DFT calculations. We fully characterize four D-π-A (BODIPY) molecular systems of high efficiency and improved J sc that are well suited for integration into bulk heterojunction (BHJ) organic solar cells as electron-donor materials in the active layer. Our results are twofold: we found that molecular complexes with a structural isoxazoline ring exhibit a higher power conversion efficiency (PCE), a useful result for improving the BHJ current, and, on the other hand, by considering the molecular systems as electron-acceptor materials, with P3HT as the electron donor in the active layer, we found a high PCE compound favorability with a pyrrolidine ring in its structure, in contrast to the molecular systems built with an isoxazoline ring. The theoretical characterization of the electronic properties of the BODIPY derivatives provided here, computed with a combination of ab initio methods and quantum models, can be readily applied to other sets of molecular complexes to hierarchize optimal power conversion efficiency.
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Affiliation(s)
- Duvalier Madrid-Úsuga
- Centre
for Bioinformatics and Photonics—CIBioFi, Universidad del Valle, Calle 13 No. 100-00, Edificio E20 No. 1069, 760032 Cali, Colombia
- Quantum
Technologies, Information and Complexity Group—QuanTIC, Departamento
de Física, Universidad del Valle, 760032 Cali, Colombia
| | - Alejandro Ortiz
- Centre
for Bioinformatics and Photonics—CIBioFi, Universidad del Valle, Calle 13 No. 100-00, Edificio E20 No. 1069, 760032 Cali, Colombia
- Heterocyclic
Compounds Research Group—GICH, Departamento de Química, Universidad del Valle, 760032 Cali, Colombia
| | - John H. Reina
- Centre
for Bioinformatics and Photonics—CIBioFi, Universidad del Valle, Calle 13 No. 100-00, Edificio E20 No. 1069, 760032 Cali, Colombia
- Quantum
Technologies, Information and Complexity Group—QuanTIC, Departamento
de Física, Universidad del Valle, 760032 Cali, Colombia
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4
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Efimov IV, Miftyakhova AR, Matveeva MD, Zhilyaev DI, Czulkin P, Janasik P, Talarico G, Voskressensky LG. Synthesis and photophysical properties of 1,7-aroyl BODIPYs: an experimental and theoretical study. NEW J CHEM 2022. [DOI: 10.1039/d2nj04237a] [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
The introduction of electron donating groups or electron withdrawing groups into the phenyl ring at the meso position of 1,7-aroyl BODIPY significantly influences the fluorescence quantum yield.
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Affiliation(s)
- Ilya V. Efimov
- Research Center: Molecular Design and Synthesis of Innovative Compounds for Medicine, Peoples’ Friendship University of Russia (RUDN University) 6 Miklukho-Maklaya St, Moscow, 117198, Russian Federation
| | - Almira R. Miftyakhova
- Research Center: Molecular Design and Synthesis of Innovative Compounds for Medicine, Peoples’ Friendship University of Russia (RUDN University) 6 Miklukho-Maklaya St, Moscow, 117198, Russian Federation
| | - Maria D. Matveeva
- A.V. Topchiev Institute of Petrochemical Synthesis, Russian Academy of Sciences 29 Leninsky pr., Moscow, 119991, Russian Federation
| | - Dmitry I. Zhilyaev
- Research Center: Molecular Design and Synthesis of Innovative Compounds for Medicine, Peoples’ Friendship University of Russia (RUDN University) 6 Miklukho-Maklaya St, Moscow, 117198, Russian Federation
| | - Paweł. Czulkin
- Faculty of Chemistry, Silesian University of Technology, Strzody 9, 44-100 Gliwice, Poland
| | - Patryk Janasik
- Faculty of Chemistry, Silesian University of Technology, Strzody 9, 44-100 Gliwice, Poland
| | - Giovanni Talarico
- Dipartimento di Scienze Chimiche, Università di Napoli Federico II, Via Cintia, 80124, Napoli, Italy
| | - Leonid G. Voskressensky
- Research Center: Molecular Design and Synthesis of Innovative Compounds for Medicine, Peoples’ Friendship University of Russia (RUDN University) 6 Miklukho-Maklaya St, Moscow, 117198, Russian Federation
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5
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Gisbert Y, Abid S, Kammerer C, Rapenne G. Divergent Synthesis of Molecular Winch Prototypes. Chemistry 2021; 27:16242-16249. [PMID: 34492156 DOI: 10.1002/chem.202103126] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2021] [Indexed: 11/10/2022]
Abstract
We report the synthesis of conceptually new prototypes of molecular winches with the ultimate aim to investigate the work performed by a single ruthenium-based molecular motor anchored on a surface by probing its ability to pull a load upon electrically-driven directional rotation. According to a technomimetic design, the motor was embedded in a winch structure, with a long flexible polyethylene glycol chain terminated by an azide hook to connect a variety of molecular loads. The structure of the motor was first derivatized by means of two sequential cross-coupling reactions involving a penta(4-halogenophenyl)cyclopentadienyl hydrotris(indazolyl)borate ruthenium(II) precursor and the resulting benzylamine derivative was next exploited as key intermediate in the divergent synthesis of a family of nanowinch prototypes. A one-pot method involving sequential peptide coupling and Cu-catalyzed azide-alkyne cycloaddition was developed to yield four loaded nanowinches, with load fragments encompassing triptycene, fullerene and porphyrin moieties.
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Affiliation(s)
- Yohan Gisbert
- CEMES, Université de Toulouse, CNRS, 29, rue Marvig, 31055, Toulouse, France
| | - Seifallah Abid
- CEMES, Université de Toulouse, CNRS, 29, rue Marvig, 31055, Toulouse, France
| | - Claire Kammerer
- CEMES, Université de Toulouse, CNRS, 29, rue Marvig, 31055, Toulouse, France
| | - Gwénaël Rapenne
- CEMES, Université de Toulouse, CNRS, 29, rue Marvig, 31055, Toulouse, France.,Division of Materials Science, Nara Institute of Science and Technology, 8916-5, Takayama, Ikoma, Nara, Japan
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6
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Rabah J, Yonkeu L, Wright K, Vallée A, Méallet-Renault R, Ha-Thi MH, Fatima A, Clavier G, Fensterbank H, Allard E. Synthesis of a dual clickable fullerene platform and construction of a dissymmetric BODIPY-[60]Fullerene-DistyrylBODIPY triad. Tetrahedron 2021. [DOI: 10.1016/j.tet.2021.132467] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Schlachter A, Asselin P, Harvey PD. Porphyrin-Containing MOFs and COFs as Heterogeneous Photosensitizers for Singlet Oxygen-Based Antimicrobial Nanodevices. ACS APPLIED MATERIALS & INTERFACES 2021; 13:26651-26672. [PMID: 34086450 DOI: 10.1021/acsami.1c05234] [Citation(s) in RCA: 38] [Impact Index Per Article: 12.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Visible-light irradiation of porphyrin and metalloporphyrin dyes in the presence of molecular oxygen can result in the photocatalytic generation of singlet oxygen (1O2). This type II reactive oxygen species (ROS) finds many applications where the dye, also called the photosensitizer, is dissolved (i.e., homogeneous phase) along with the substrate to be oxidized. In contrast, metal-organic frameworks (MOFs) are insoluble (or will disassemble) when placed in a solvent. When stable as a suspension, MOFs adsorb a large amount of O2 and photocatalytically generate 1O2 in a heterogeneous process efficiently. Considering the immense surface area and great capacity for gas adsorption of MOFs, they seem ideal candidates for this application. Very recently, covalent-organic frameworks (COFs), variants where reticulation relies on covalent rather than coordination bonds, have emerged as efficient photosensitizers. This comprehensive mini review describes recent developments in the use of porphyrin-based or porphyrin-containing MOFs and COFs, including nanosized versions, as heterogeneous photosensitizers of singlet oxygen toward antimicrobial applications.
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Affiliation(s)
- Adrien Schlachter
- Département de Chimie, Université de Sherbrooke, Sherbrooke, Quebec J1K 2R1, Canada
| | - Paul Asselin
- Département de Chimie, Université de Sherbrooke, Sherbrooke, Quebec J1K 2R1, Canada
| | - Pierre D Harvey
- Département de Chimie, Université de Sherbrooke, Sherbrooke, Quebec J1K 2R1, Canada
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8
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Harvey PD. Porphyrin-based MOFs as heterogeneous photocatalysts for the eradication of organic pollutants and toxins. J PORPHYR PHTHALOCYA 2021. [DOI: 10.1142/s1088424621300020] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
Water and air pollution are among the major environmental challenges of this era. Waste management, economic sustainable development and renewable energy are unavoidable concomitant considerations. Over the past five years, nanosized metal-organic frameworks (nano-MOFs) have been developed for the elimination of pollutants in wet media and air-born toxins using the highly efficient reactive oxygen species (ROS) of type I (H2O2, •OH, O[Formula: see text] and of type II (1O[Formula: see text]. The ROS are catalytically and efficiently generated through photosensitization, and porphyrins and metalloporphyrins are pigments of choice for this purpose. This short review summarizes the fundamentals of ROS generation by porphyrin-based nano-MOFs (mainly through the formation of ROS type II) and their composites (leading to ROS type I), which includes energy and electron transfer processes, and their applications in these environmental issues.
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Affiliation(s)
- Pierre D. Harvey
- Département de chimie, Université de Sherbrooke, Sherbrooke, PQ, Canada, J1K 2R1, Canada
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9
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Zatsikha YV, Blesener TS, King AJ, Healy AT, Goff PC, Didukh NO, Blank DA, Kovtun YP, Nemykin VN. Fully Conjugated Pyrene-BODIPY and Pyrene-BODIPY-Ferrocene Dyads and Triads: Synthesis, Characterization, and Selective Noncovalent Interactions with Nanocarbon Materials. J Phys Chem B 2021; 125:360-371. [PMID: 33370123 DOI: 10.1021/acs.jpcb.0c10074] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Several pyrene-boron-dipyrromethene (BODIPY) and pyrene-BODIPY-ferrocene derivatives with a fully conjugated pyrene fragment appended to the α-position(s) of the BODIPY core have been prepared by Knoevenagel condensation reaction and characterized by one-dimensional (1D) and two-dimensional (2D) nuclear magnetic resonance (NMR), UV-vis, fluorescence spectroscopy, high-resolution mass spectrometry as well as X-ray crystallography. The redox properties of new donor-acceptor BODIPY dyads and triads were studied by electrochemical (cyclic voltammetry (CV) and differential pulse voltammetry (DPV)) and spectroelectrochemical approaches. Formation of weakly bonded noncovalent complexes between the new pyrene-BODIPYs and nanocarbon materials (C60, C70, single-walled carbon nanotube (SWCNT), and graphene) was studied by UV-vis, steady-state fluorescent, and time-resolved transient absorption spectroscopy. UV-vis and fluorescent spectroscopy are indicative of the much stronger and selective interaction between new dyes and (6,5)-SWCNT as well as graphene compared to that of C60 and C70 fullerenes. In agreement with these data, transient absorption spectroscopy provided no evidence for any significant change in excited-state lifetime or photoinduced charge transfer between pyrene-BODIPYs and C60 or C70 fullerenes when the pyrene-BODIPY chromophores were excited into the lowest-energy singlet excited state. Density functional theory (DFT) and time-dependent DFT (TDDFT) calculations suggest that the pyrene fragments are fully conjugated into the π-system of BODIPY core, which correlates well with the experimental data.
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Affiliation(s)
- Yuriy V Zatsikha
- Department of Chemistry, University of Manitoba, Winnipeg, Manitoba R3T 2N2, Canada
| | - Tanner S Blesener
- Department of Chemistry, University of Manitoba, Winnipeg, Manitoba R3T 2N2, Canada
| | - Alex J King
- Department of Chemistry & Biochemistry, University of Minnesota Duluth, Duluth, Minnesota 55812, United States
| | - Andrew T Healy
- Department of Chemistry, University of Minnesota, Minneapolis, Minnesota 55455, United States
| | - Philip C Goff
- Department of Chemistry, University of Minnesota, Minneapolis, Minnesota 55455, United States
| | - Natalia O Didukh
- Department of Chemistry, University of Manitoba, Winnipeg, Manitoba R3T 2N2, Canada.,Institute of Organic Chemistry, National Academy of Sciences of Ukraine, 02660 Kyiv, Ukraine
| | - David A Blank
- Department of Chemistry, University of Minnesota, Minneapolis, Minnesota 55455, United States
| | - Yuriy P Kovtun
- Institute of Organic Chemistry, National Academy of Sciences of Ukraine, 02660 Kyiv, Ukraine
| | - Victor N Nemykin
- Department of Chemistry, University of Manitoba, Winnipeg, Manitoba R3T 2N2, Canada.,Department of Chemistry, University of Tennessee, Knoxville, Tennessee 37996, United States
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10
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11
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Gkini K, Verykios A, Balis N, Kaltzoglou A, Papadakis M, Adamis KS, Armadorou KK, Soultati A, Drivas C, Gardelis S, Petsalakis ID, Palilis LC, Fakharuddin A, Haider MI, Bao X, Kennou S, Argitis P, Schmidt-Mende L, Coutsolelos AG, Falaras P, Vasilopoulou M. Enhanced Organic and Perovskite Solar Cell Performance through Modification of the Electron-Selective Contact with a Bodipy-Porphyrin Dyad. ACS APPLIED MATERIALS & INTERFACES 2020; 12:1120-1131. [PMID: 31829007 DOI: 10.1021/acsami.9b17580] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Photovoltaic devices based on organic semiconductors and organo-metal halide perovskites have not yet reached the theoretically predicted power conversion efficiencies while they still exhibit poor environmental stability. Interfacial engineering using suitable materials has been recognized as an attractive approach to tackle the above issues. We introduce here a zinc porphyrin-triazine-bodipy donor-π bridge-acceptor dye as a universal electron transfer mediator in both organic and perovskite solar cells. Thanks to its "push-pull" character, this dye enhances electron transfer from the absorber layer toward the electron-selective contact, thus improving the device's photocurrent and efficiency. The direct result is more than 10% average power conversion efficiency enhancement in both fullerene-based (from 8.65 to 9.80%) and non-fullerene-based (from 7.71 to 8.73%) organic solar cells as well as in perovskite ones (from 14.56 to 15.67%), proving the universality of our approach. Concurrently, by forming a hydrophobic network on the surface of metal oxide substrates, it improves the nanomorphology of the photoactive overlayer and contributes to efficiency stabilization. The fabricated devices of both kinds preserved more than 85% of their efficiency upon exposure to ambient conditions for more than 600 h without any encapsulation.
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Affiliation(s)
- Konstantina Gkini
- Institute of Nanoscience and Nanotechnology, National Center for Scientific Research Demokritos , Agia Paraskevi , 15341 Athens , Greece
| | - Apostolis Verykios
- Institute of Nanoscience and Nanotechnology, National Center for Scientific Research Demokritos , Agia Paraskevi , 15341 Athens , Greece
| | - Nikolaos Balis
- Institute of Nanoscience and Nanotechnology, National Center for Scientific Research Demokritos , Agia Paraskevi , 15341 Athens , Greece
| | - Andreas Kaltzoglou
- Institute of Nanoscience and Nanotechnology, National Center for Scientific Research Demokritos , Agia Paraskevi , 15341 Athens , Greece
| | - Michael Papadakis
- Department of Chemistry , University of Crete, Laboratory of Bioinorganic Chemistry , Voutes Campus , 70013 Heraklion , Crete , Greece
| | - Konstantinos S Adamis
- Institute of Nanoscience and Nanotechnology, National Center for Scientific Research Demokritos , Agia Paraskevi , 15341 Athens , Greece
- Department of Chemistry , University of Crete, Laboratory of Bioinorganic Chemistry , Voutes Campus , 70013 Heraklion , Crete , Greece
| | - Konstantina-Kalliopi Armadorou
- Institute of Nanoscience and Nanotechnology, National Center for Scientific Research Demokritos , Agia Paraskevi , 15341 Athens , Greece
| | - Anastasia Soultati
- Institute of Nanoscience and Nanotechnology, National Center for Scientific Research Demokritos , Agia Paraskevi , 15341 Athens , Greece
| | | | - Spyros Gardelis
- Solid State Physics Section, Physics Department , National and Kapodistrian University of Athens , Panepistimioupolis , 15784 Zografos , Athens , Greece
| | - Ioannis D Petsalakis
- Theoretical and Physical Chemistry Institute, National Hellenic Research Foundation , Vas. Constantinou Avenue 48 , 11635 Athens , Greece
| | | | - Azhar Fakharuddin
- Department of Physics , University of Konstanz , 78457 Konstanz , Germany
| | - Muhammad Irfan Haider
- Department of Physics , University of Konstanz , 78457 Konstanz , Germany
- Department of Chemistry , Quaid-i-Azam University , 45320 Islamabad , Pakistan
| | - Xichang Bao
- Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences , 266101 Qingdao , China
| | | | - Panagiotis Argitis
- Institute of Nanoscience and Nanotechnology, National Center for Scientific Research Demokritos , Agia Paraskevi , 15341 Athens , Greece
| | | | - Athanassios G Coutsolelos
- Department of Chemistry , University of Crete, Laboratory of Bioinorganic Chemistry , Voutes Campus , 70013 Heraklion , Crete , Greece
| | - Polycarpos Falaras
- Institute of Nanoscience and Nanotechnology, National Center for Scientific Research Demokritos , Agia Paraskevi , 15341 Athens , Greece
| | - Maria Vasilopoulou
- Institute of Nanoscience and Nanotechnology, National Center for Scientific Research Demokritos , Agia Paraskevi , 15341 Athens , Greece
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12
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Tanguy L, Malhotra P, Singh SP, Brisard G, Sharma GD, Harvey PD. A 9.16% Power Conversion Efficiency Organic Solar Cell with a Porphyrin Conjugated Polymer Using a Nonfullerene Acceptor. ACS APPLIED MATERIALS & INTERFACES 2019; 11:28078-28087. [PMID: 31294545 DOI: 10.1021/acsami.9b05463] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
A new low-molecular-weight porphyrin-based polymer, PPPyDPP, with pyridine-capped diketopyrrolopyrrole (DPP) has been synthesized, and its optical and electrochemical properties were investigated. The polymer is prepared with a low content of homocoupling units and gives a widely spread absorption from 400 to 900 nm with a narrow optical band gap of 1.46 eV. The highest occupied molecular orbital (HOMO) and lowest unoccupied molecular orbital (LUMO) energy levels are respectively located at -5.27 and -3.78 eV, respectively. PPPyDPP was used as the electron donor, whereas [6,6]-phenyl-C71-butyric acid methyl ester (PC71BM) and bis(rhodanine)indolo-[3,2-b]-carbazole (ICzRd2), a nonfullerene small molecule, were used as acceptors for the fabrication of solution-processed bulk heterojunction polymer solar cells. Overall power conversion efficiencies (PCEs) of 7.31 and 9.16% (record high for porphyrin-containing polymers) were obtained for PC71BM and ICzRd2, respectively. A high Voc of 1.01 V and a low Eloss of 0.45 eV may explain this new record.
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Affiliation(s)
- Loïc Tanguy
- Department of Chemistry , University of Sherbrooke , 2500 Boulevard de l'Université , Sherbrooke , Quebec J1K 2R1 , Canada
| | - Prateek Malhotra
- Department of Physics , LNM Institute of Information Technology (Deemed to be University) , Jamdoli, 302017 Jaipur , India
| | - Surya Prakash Singh
- Polymers and Functional Materials Division , CSIR-Indian Institute of Chemical Technology , Uppal Road , Tarnaka, Hyderabad 500007 , India
| | - Gessie Brisard
- Department of Chemistry , University of Sherbrooke , 2500 Boulevard de l'Université , Sherbrooke , Quebec J1K 2R1 , Canada
| | - Ganesh D Sharma
- Department of Physics , LNM Institute of Information Technology (Deemed to be University) , Jamdoli, 302017 Jaipur , India
| | - Pierre D Harvey
- Department of Chemistry , University of Sherbrooke , 2500 Boulevard de l'Université , Sherbrooke , Quebec J1K 2R1 , Canada
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Abdelhameed M, Aly S, Lant JT, Zhang X, Charpentier P. Energy/Electron Transfer Switch for Controlling Optical Properties of Silicon Quantum Dots. Sci Rep 2018; 8:17068. [PMID: 30459354 PMCID: PMC6244374 DOI: 10.1038/s41598-018-35201-0] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2018] [Accepted: 11/01/2018] [Indexed: 12/18/2022] Open
Abstract
The superior optical properties of Silicon Quantum Dots (SQDs) have made them of increasing interest for a variety of biological and opto-electronic applications. The surface functionalization of the SQDs with aromatic ligands plays a key role in controlling their optical properties due to the interaction of the ligands with the electronic wave function of SQDs. However, there is limited reports in literature describing the impact of spacer groups connecting the aromatic chromophore to SQDs on the optical properties of the SQDs. Herein, we report the synthesis of two SQDs assemblies (1.6 nm average diameter) functionalized with perylene-3,4,9,10-tetracarboxylic acid diimide (PDI) chromophore through N-propylurea and propylamine spacers. Depending on the nature of the spacer, the photophysical measurements provide clear evidence for efficient energy and/or electron transfer between the SQDs and PDI. Energy transfer was confirmed to be the operative process when propylurea spacer was used, in which the rate was estimated to be ~2 × 109 s-1. On the other hand, the propylamine spacer was found to facilitate electron transfer process within the SQDs assembly. To illustrate functionality, the water soluble SQD-N-propylurea-PDI assembly was proven to be nontoxic and efficient for fluorescent imaging of embryonic kidney HEK293 cells and human bone cancerous U2OS cells.
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Affiliation(s)
- Mohammed Abdelhameed
- Department of Chemical and Biochemical Engineering, Western University, London, Ontario, N6A 5B9, Canada
| | - Shawkat Aly
- Department of Mechanical and Materials Engineering, Western University, London, Ontario, N6A 5B9, Canada
| | - Jeremy T Lant
- Department of Biochemistry, Western University, London, Ontario, N6A 5B9, Canada
| | - Xiaoran Zhang
- Department of Chemical and Biochemical Engineering, Western University, London, Ontario, N6A 5B9, Canada
| | - Paul Charpentier
- Department of Chemical and Biochemical Engineering, Western University, London, Ontario, N6A 5B9, Canada.
- Department of Mechanical and Materials Engineering, Western University, London, Ontario, N6A 5B9, Canada.
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14
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Gao D, Aly SM, Karsenti PL, Harvey PD. Is π-Stacking Prone To Accelerate Singlet-Singlet Energy Transfers? Inorg Chem 2018; 57:4291-4300. [PMID: 29570293 DOI: 10.1021/acs.inorgchem.7b03050] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
π-Stacking is the most common structural feature that dictates the optical and electronic properties of chromophores in the solid state. Herein, a unidirectional singlet-singlet energy-transfer dyad has been designed to test the effect of π-stacking of zinc(II) porphyrin, [Zn2], as a slipped dimer acceptor using a BODIPY unit, [bod], as the donor, bridged by the linker C6H4C≡CC6H4. The rate of singlet energy transfer, kET(S1), at 298 K ( kET(S1) = 4.5 × 1010 s-1) extracted through the change in fluorescence lifetime, τF, of [bod] in the presence (27.1 ps) and the absence of [Zn2] (4.61 ns) from Streak camera measurements, and the rise time of the acceptor signal in femtosecond transient absorption spectra (22.0 ps), is faster than most literature cases where no π-stacking effect exists (i.e., monoporphyrin units). At 77 K, the τF of [bod] increases to 45.3 ps, indicating that kET(S1) decreases by 2-fold (2.2 × 1010 s-1), a value similar to most values reported in the literature, thus suggesting that the higher value at 298 K is thermally promoted at a higher temperature.
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Affiliation(s)
- Di Gao
- Département de Chimie , Université de Sherbrooke , Sherbrooke , Quebec J1K 2R1 , Canada
| | - Shawkat M Aly
- Département de Chimie , Université de Sherbrooke , Sherbrooke , Quebec J1K 2R1 , Canada
| | - Paul-Ludovic Karsenti
- Département de Chimie , Université de Sherbrooke , Sherbrooke , Quebec J1K 2R1 , Canada
| | - Pierre D Harvey
- Département de Chimie , Université de Sherbrooke , Sherbrooke , Quebec J1K 2R1 , Canada
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Lei H, Karsenti PL, Harvey PD. Azophenine as Central Core for Efficient Light Harvesting Devices. Chemphyschem 2018; 19:596-611. [PMID: 29205732 DOI: 10.1002/cphc.201701183] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2017] [Revised: 12/02/2017] [Indexed: 01/12/2023]
Abstract
The notoriously non-luminescent uncycled azophenine (Q) was harnessed with Bodipy and zinc(II)porphyrin antennas to probe its fluorescence properties, its ability to act as a singlet excited state energy acceptor and to mediate the transfer. Two near-IR emissions are depicted from time-resolved fluorescence spectroscopy, which are most likely due to the presence of tautomers of very similar calculated total energies (350 cm-1 ; DFT; B3LYP). The rates for energy transfer, kET (S1 ), for 1 Bodipy*→Q are in the order of 1010 -1011 s-1 and are surprisingly fast when considering the low absorptivity properties of the lowest energy charge transfer excited state of azophenine. The rational is provided by the calculated frontier molecular orbitals (MOs) which show atomic contributions in the C6 H4 C≡CC6 H4 arms, thus favoring the double electron exchange mechanism. In the mixed-antenna Bodipy-porphyrin star molecule, the rate for 1 Bodipy*→porphyrin has also been evaluated (≈16×1010 s-1 ) and is among the fastest rates reported for Bodipy-zinc(II)porphyrin pairs. This astonishing result is again explained from the atomic contributions of the C6 H4 C≡CC6 H4 and C≡CC6 H4 arms thus favouring the Dexter process. Here, for the first time, this process is found to be sensitively temperature-dependent. The azophenine turns out to be excellent for electronic communication.
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Affiliation(s)
- Hu Lei
- Département de chimie, Université de Sherbrooke, PQ, J1K 2R1, Canada
| | | | - Pierre D Harvey
- Département de chimie, Université de Sherbrooke, PQ, J1K 2R1, Canada
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Bucher L, Desbois N, Harvey PD, Gros CP, Sharma GD. Porphyrin Antenna-Enriched BODIPY-Thiophene Copolymer for Efficient Solar Cells. ACS APPLIED MATERIALS & INTERFACES 2018; 10:992-1004. [PMID: 29256596 DOI: 10.1021/acsami.7b16112] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Low bandgap A-π-D copolymer, P(BdP-DEHT), consisting of alternating BOronDIPYrromethene (BODIPY) and thiophene units bridged by ethynyl linkers, and its porphyrin-enriched analogue, P(BdP/Por-DEHT), were prepared, and their optical and electrochemical properties were studied. P(BdP-DEHT) exhibits strong absorption in the 500-800 nm range with an optical bandgap of 1.74 eV. On the basis of cyclic voltammetry, the highest occupied molecular orbital (HOMO) and lowest unoccupied molecular orbital (LUMO) energy levels are evaluated to be -5.40 and -3.66 eV, respectively. After the anchoring of zinc(II) porphyrin on the BODIPY unit, P(BdP/Por-DEHT) displays broadened absorption, thanks to porphyrins, and the optical bandgap decreases to 1.59 eV because of extension of BODIPY conjugation. The resulting estimated HOMO and LUMO energy levels, respectively, move to -5.32 and -3.73 eV. After optimization of the P(BdP-DEHT) or P(BdP/Por-DEHT) to PC71BM weight ratio to 1:2 in dichlorobenzene solution, the bulk heterojunction polymer solar cells show overall power conversion efficiencies (PCEs) of 3.03 and 3.86%, respectively. After solvent vapor annealing (SVA) treatment in CH2Cl2 for 40 s, the PCEs increased to 7.40% [Voc of 0.95 V, Jsc of 12.77 mA/cm2, and fill factor (FF) of 0.61 with energy loss of 0.79 eV] and 8.79% (Voc of 0.92 V, Jsc of 14.48 mA/cm2, and FF of 0.66 with energy loss of 0.67 eV). The increase in the PCE for P(BdP/Por-DEHT)-based devices is mainly attributed to the enhancement in Jsc and FF, which may be related to the broader absorption spectra, lower band gap, and better charge transport of P(BdP/Por-DEHT) compared to P(BdP-DEHT). This could also be related to the optimized nanoscale morphology of the active layer for both efficient exciton dissociation and charge transport toward the electrodes and a balanced charge transport in the device, induced by the SVA treatment of the active layer.
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Affiliation(s)
- Léo Bucher
- ICMUB (UMR CNRS 6302), Université de Bourgogne Franche-Comté-9 , Avenue Alain Savary-BP 47870, 21078 Dijon Cedex, France
- Department of Chemistry, Université de Sherbrooke , 2500, Bd de l'Université, J1K 2R1 Sherbrooke, Québec, Canada
| | - Nicolas Desbois
- ICMUB (UMR CNRS 6302), Université de Bourgogne Franche-Comté-9 , Avenue Alain Savary-BP 47870, 21078 Dijon Cedex, France
| | - Pierre D Harvey
- Department of Chemistry, Université de Sherbrooke , 2500, Bd de l'Université, J1K 2R1 Sherbrooke, Québec, Canada
| | - Claude P Gros
- ICMUB (UMR CNRS 6302), Université de Bourgogne Franche-Comté-9 , Avenue Alain Savary-BP 47870, 21078 Dijon Cedex, France
| | - Ganesh D Sharma
- Department of Physics, LNM Institute of Information Technology , Rupa ki Nagal, Jamdoli, Jaipur 302031, Rajasthan, India
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Cabrera-Espinoza A, Insuasty B, Ortiz A. Synthesis, the electronic properties and efficient photoinduced electron transfer of new pyrrolidine[60]fullerene- and isoxazoline[60]fullerene-BODIPY dyads: nitrile oxide cycloaddition under mild conditions using PIFA. NEW J CHEM 2017. [DOI: 10.1039/c7nj02057k] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The first synthesis of fulleroisoxazoline-BODIPY whose electron-accepting ability of the C60 cage is better than its fulleropyrrolidine-BODIPY counterpart.
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Affiliation(s)
- Andrea Cabrera-Espinoza
- Heterocyclic Compounds Research Group
- Department of Chemistry
- Universidad del Valle
- Cali
- Colombia
| | - Braulio Insuasty
- Heterocyclic Compounds Research Group
- Department of Chemistry
- Universidad del Valle
- Cali
- Colombia
| | - Alejandro Ortiz
- Heterocyclic Compounds Research Group
- Department of Chemistry
- Universidad del Valle
- Cali
- Colombia
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