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Kumar PR, Mothi E. New A3B-type naphthyl Zn(II porphyrins as DSSC dyes: Effect of anchoring group and co-adsorption for enhanced efficiency. J Mol Struct 2022. [DOI: 10.1016/j.molstruc.2022.134766] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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Nikoloudakis E, Pati PB, Charalambidis G, Budkina DS, Diring S, Planchat A, Jacquemin D, Vauthey E, Coutsolelos AG, Odobel F. Dye-Sensitized Photoelectrosynthesis Cells for Benzyl Alcohol Oxidation Using a Zinc Porphyrin Sensitizer and TEMPO Catalyst. ACS Catal 2021. [DOI: 10.1021/acscatal.1c02609] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Emmanouil Nikoloudakis
- Laboratory of Bioinorganic Chemistry, Department of Chemistry, University of Crete, Voutes Campus, 70013 Heraklion, Crete, Greece
| | - Palas Baran Pati
- Université de Nantes, CNRS, UMR 6230, Chimie et Interdisciplinarité: Synthèse, Analyse, Modélisation (CEISAM), 2 rue de la Houssinière, 44322 Nantes Cedex 3, France
| | - Georgios Charalambidis
- Laboratory of Bioinorganic Chemistry, Department of Chemistry, University of Crete, Voutes Campus, 70013 Heraklion, Crete, Greece
| | - Darya S. Budkina
- Department of Physical Chemistry, University of Geneva, 30 Quai Ernest-Ansermet, CH-1211 Geneva, Switzerland
| | - Stéphane Diring
- Université de Nantes, CNRS, UMR 6230, Chimie et Interdisciplinarité: Synthèse, Analyse, Modélisation (CEISAM), 2 rue de la Houssinière, 44322 Nantes Cedex 3, France
| | - Aurélien Planchat
- Université de Nantes, CNRS, UMR 6230, Chimie et Interdisciplinarité: Synthèse, Analyse, Modélisation (CEISAM), 2 rue de la Houssinière, 44322 Nantes Cedex 3, France
| | - Denis Jacquemin
- Université de Nantes, CNRS, UMR 6230, Chimie et Interdisciplinarité: Synthèse, Analyse, Modélisation (CEISAM), 2 rue de la Houssinière, 44322 Nantes Cedex 3, France
| | - Eric Vauthey
- Department of Physical Chemistry, University of Geneva, 30 Quai Ernest-Ansermet, CH-1211 Geneva, Switzerland
| | - Athanassios G. Coutsolelos
- Laboratory of Bioinorganic Chemistry, Department of Chemistry, University of Crete, Voutes Campus, 70013 Heraklion, Crete, Greece
| | - Fabrice Odobel
- Université de Nantes, CNRS, UMR 6230, Chimie et Interdisciplinarité: Synthèse, Analyse, Modélisation (CEISAM), 2 rue de la Houssinière, 44322 Nantes Cedex 3, France
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Kumar S, Acharyya JN, Banerjee D, Soma VR, Vijaya Prakash G, Sankar M. Strong two-photon absorption and ultrafast dynamics of meso-functionalized "push-pull"trans-A 2BC porphyrins. Dalton Trans 2021; 50:6256-6272. [PMID: 33876809 DOI: 10.1039/d1dt00378j] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
A new series of "push-pull"meso-substituted trans-A2BC porphyrins, where A = mesityl, B = phenothiazine (push) and C = o/p-nitrophenyl moiety (pull) and M = 2H, Ni(ii), Cu(ii), and Zn(ii), were synthesized. These trans-A2BC porphyrins were characterized by various techniques viz. UV-Vis, fluorescence and NMR spectroscopy, matrix assisted laser desorption ionization-time of flight (MALDI-TOF) mass spectrometry, cyclic voltammetry, single-crystal X-ray diffraction analysis and density functional theory (DFT) studies. The single crystal structure of the newly synthesized free base trans-H2A2BC porphyrin (2) revealed the orientation of meso-substituents and the planar conformation of the porphyrin core. All newly synthesized free base trans-H2A2BC porphyrins (1 or 2) and their metal complexes exhibited a sharp Soret band. The first reduction potential of all synthesized trans-MA2BC porphyrins showed an anodic shift as compared with that of meso-tetraphenylporphyrins (MTPPs) due to the strong electron withdrawing nature of the nitrophenyl group. In general, the first oxidation potential of trans-MA2BC porphyrins shows a cathodic shift due to the electron donating phenothiazine moiety as compared to that of MTPPs. p-Nitrophenyl appended trans-A2BC porphyrins exhibited large ground state dipole moment values (8.59-9.64 D) as compared to MTPPs (0.0013-0.052 D) owing to the polarized "push-pull" effect of meso-substituents such as phenothiazine (push) and nitrophenyl (pull) moieties. Femtosecond nonlinear optical (NLO) studies performed with kHz pulses at 800 nm revealed strong two-photon absorption coefficients (∼0.082-0.0953 cm GW-1) and cross-sections (∼1.71-1.95 × 103 GM) for these "push-pull" porphyrins. We have also attempted to understand the NLO coefficients in terms of the structural changes in these porphyrin derivatives. A comparison that has been accomplished with similar porphyrin molecules and under similar experimental conditions revealed the superior performance of the title molecules. Furthermore, femtosecond transient absorption studies demonstrated several ultrafast processes from various excited states in these porphyrins, useful for identifying the processes relevant to optical switching applications.
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Affiliation(s)
- Sandeep Kumar
- Department of Chemistry, Indian Institute of Technology Roorkee, Roorkee 247667, India.
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Rathi P, Ekta, Kumar S, Banerjee D, Soma VR, Sankar M. Unsymmetrical β-functionalized ‘push–pull’ porphyrins: synthesis and photophysical, electrochemical and nonlinear optical properties. Dalton Trans 2020; 49:3198-3208. [DOI: 10.1039/c9dt04252k] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
A new family of unsymmetrical β-TPA appended ‘push–pull’ porphyrins has been synthesized in good yield for the first time. They exhibited red shifted broad absorption spectral features with high dipole moments and tunable redox properties.
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Affiliation(s)
- Pinki Rathi
- Department of Chemistry
- Indian Institute of Technology Roorkee
- Roorkee 247667
- India
| | - Ekta
- Department of Chemistry
- Indian Institute of Technology Roorkee
- Roorkee 247667
- India
| | - Sandeep Kumar
- Department of Chemistry
- Indian Institute of Technology Roorkee
- Roorkee 247667
- India
| | - Dipanjan Banerjee
- Advanced Centre of Research in High Energy Materials (ACRHEM)
- University of Hyderabad
- Hyderabad 500046
- India
| | - Venugopal Rao Soma
- Advanced Centre of Research in High Energy Materials (ACRHEM)
- University of Hyderabad
- Hyderabad 500046
- India
| | - Muniappan Sankar
- Department of Chemistry
- Indian Institute of Technology Roorkee
- Roorkee 247667
- India
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Rathi P, Butcher R, Sankar M. Unsymmetrical nonplanar 'push-pull' β-octasubstituted porphyrins: facile synthesis, structural, photophysical and electrochemical redox properties. Dalton Trans 2019; 48:15002-15011. [PMID: 31556414 DOI: 10.1039/c9dt02792k] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Mixed substitution at the β-position of porphyrins influences their photophysical and electrochemical redox properties. Two new series of asymmetrically mixed β-octasubstituted porphyrins viz. MTPP(Ph)2Br5X (X = NO2 or Br and M = 2H, Co(ii), Ni(ii), Cu(ii), and Zn(ii)) have been synthesized and characterized by various spectroscopic techniques. The single crystal X-ray structure of H2TPP(NO2)(Ph)2Br5 showed a nonplanar saddle shape conformation of the macrocyclic core. Furthermore, the fully optimized geometries confirmed the saddle shape conformation of H2TPP(Ph)2Br5X (X = NO2 or Br). Electronic spectra revealed a significant bathochromic shift by appending both electron donor and acceptor substituents at the β-position of the meso-tetraphenylporphyrin skeleton, which reflects the following order H2TPP < H2TPP(NO2) < H2TPP(NO2)(Ph)2 < H2TPP(Ph)2Br6 < H2TPP(NO2)(Ph)2Br5. H2TPP(Ph)2Br5X (X = NO2 or Br) exhibited a significant bathochromic shift (Δλmax = 53-61 nm) in the Soret band and (Δλmax = 90-95 nm) in the longest wavelength Qx(0,0) band as compared to H2TPP. Nonplanar conformations and electron withdrawing β-substituents induce higher protonation and deprotonation constants for H2TPP(NO2)(Ph)2Br5 and H2TPP(Ph)2Br6 as compared to precursor porphyrins viz. H2TPP, H2TPP(NO2) and H2TPP(NO2)(Ph)2. The electronic spectral properties and redox potentials of MTPP(Ph)2Br5X (X = NO2 or Br and M = 2H, Co, Ni, Cu and Zn) are affected by β-substituents at the periphery of the porphyrin core. Redox tunability was achieved by appending push-pull substituents at the β-position of the MTPP (M = 2H, CoII, NiII, CuII, and ZnII) skeleton of the macrocycle. CuTPP(Ph)2Br6 and CuTPP(NO2)(Ph)2Br5 exhibited a dramatically reduced HOMO-LUMO gap with a difference of 0.55 V and 0.62 V, respectively as compared to CuTPP due to the push-pull effect of β-substituents and nonplanarity of the porphyrin core.
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Affiliation(s)
- Pinki Rathi
- Department of Chemistry, Indian Institute of Technology Roorkee, Roorkee - 247667, India.
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Prakash K, Alsaleh AZ, Neeraj, Rathi P, Sharma A, Sankar M, D'Souza F. Synthesis, Spectral, Electrochemical and Photovoltaic Studies of A 3 B Porphyrinic Dyes having Peripheral Donors. Chemphyschem 2019; 20:2627-2634. [PMID: 31283866 DOI: 10.1002/cphc.201900604] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2019] [Indexed: 12/21/2022]
Abstract
Three new 'push-pull' A3 B Zn(II)porphyrin dyes having meso-pyrenyl, carbazolyl and phenothiazine as electron donors (A) and phenylcarboxylic acid as acceptor/anchor (B) were synthesized and utilized for DSSC application. The spectral and electrochemical redox properties of these new dyes were studied and compared with trans-A2 BC Zn(II) porphyrin dyes under similar experimental conditions. Red-shifted, broadened absorption peaks, lower fluorescence quantum yields, and shortened lifetimes were observed for the A3 B dyes as compared to zinc tetraphenylporphyrin control, ZnTPP. DFT optimized structures suggested effective charge separation related to enhanced charge injection efficiency. Driving force for electron injection (ΔGinj ) and dye regeneration (ΔGreg ) calculated from the spectral and electrochemical studies predicted facile electron injection from excited dye into semiconductor TiO2 in the constructed solar cells. Phenothiazine appended dye (KP-TriPTZ-Zn) showed the highest η value of 7.3 % for PCE with greater Jsc and Voc values due to its better light harvesting ability and reduced dye aggregation as compared to other dyes. Our studies demonstrate that the dyes having multiple electron-donating groups exhibit higher photon-to-current conversion efficiency.
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Affiliation(s)
- Kamal Prakash
- Department of Chemistry, Indian Institute of Technology-Roorkee, Roorkee -, 247667, India
| | - Ajyal Z Alsaleh
- Department of Chemistry, University of North Texas, Denton, TX, 76203-5017, USA
| | - Neeraj
- Department of Chemistry, Indian Institute of Technology-Roorkee, Roorkee -, 247667, India
| | - Pinki Rathi
- Department of Chemistry, Indian Institute of Technology-Roorkee, Roorkee -, 247667, India
| | - Ankit Sharma
- Department of Chemistry, Indian Institute of Technology-Roorkee, Roorkee -, 247667, India
| | - Muniappan Sankar
- Department of Chemistry, Indian Institute of Technology-Roorkee, Roorkee -, 247667, India
| | - Francis D'Souza
- Department of Chemistry, University of North Texas, Denton, TX, 76203-5017, USA
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Hu Y, Yellappa S, Thomas MB, Jinadasa RGW, Matus A, Shulman M, D'Souza F, Wang H. β‐Functionalized Push–Pull
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‐Dibenzoporphyrins as Sensitizers for Dye‐Sensitized Solar Cells. Chem Asian J 2017; 12:2749-2762. [DOI: 10.1002/asia.201701117] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2017] [Revised: 08/08/2017] [Indexed: 11/05/2022]
Affiliation(s)
- Yi Hu
- Department of Chemistry University of North Texas 1155 Union Circle, no. 305070 Denton TX 76203-5017 USA
| | - Shivaraj Yellappa
- Department of Chemistry University of North Texas 1155 Union Circle, no. 305070 Denton TX 76203-5017 USA
- Government Science College Bengaluru 560001 Karnataka India
| | - Michael B. Thomas
- Department of Chemistry University of North Texas 1155 Union Circle, no. 305070 Denton TX 76203-5017 USA
| | - R. G. Waruna Jinadasa
- Department of Chemistry University of North Texas 1155 Union Circle, no. 305070 Denton TX 76203-5017 USA
| | - Alex Matus
- Department of Chemistry and Biochemistry Miami University Oxford OH 45056 USA
| | - Max Shulman
- Department of Chemistry and Biochemistry Miami University Oxford OH 45056 USA
| | - Francis D'Souza
- Department of Chemistry University of North Texas 1155 Union Circle, no. 305070 Denton TX 76203-5017 USA
| | - Hong Wang
- Department of Chemistry University of North Texas 1155 Union Circle, no. 305070 Denton TX 76203-5017 USA
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Tripuramallu BK, Palakuri R, Titi HM, Goldberg I. Scalable Synthesis and Supramolecular Assembly oftrans-A2B2Porphyrins with Pendant Carboxylic Functional Groups. ChemistrySelect 2017. [DOI: 10.1002/slct.201601716] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Bharat Kumar Tripuramallu
- School of Chemistry, Sackler Faculty of Exact Sciences; Tel-Aviv University, Ramat-Aviv; 6997801 Tel-Aviv Israel
| | - Ramesh Palakuri
- School of Chemistry, Sackler Faculty of Exact Sciences; Tel-Aviv University, Ramat-Aviv; 6997801 Tel-Aviv Israel
| | - Hatem M. Titi
- School of Chemistry, Sackler Faculty of Exact Sciences; Tel-Aviv University, Ramat-Aviv; 6997801 Tel-Aviv Israel
| | - Israel Goldberg
- School of Chemistry, Sackler Faculty of Exact Sciences; Tel-Aviv University, Ramat-Aviv; 6997801 Tel-Aviv Israel
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