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García-Risueño P, Armengol E, García-Cerdaña À, García-Lastra JM, Carrasco-Busturia D. Electron-vibrational renormalization in fullerenes through ab initio and machine learning methods. Phys Chem Chem Phys 2024. [PMID: 38984472 DOI: 10.1039/d4cp00632a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/11/2024]
Abstract
The effect of nuclear vibrations on the electronic eigenvalues and the HOMO-LUMO gap is known for several kinds of carbon-based materials, like diamond, diamondoids, carbon nanoclusters, carbon nanotubes and others, like hydrogen-terminated oligoynes and polyyne. However, it has not been widely analysed in another remarkable kind which presents both theoretical and technological interest: fullerenes. In this article we present the study of the HOMO, LUMO and gap renormalizations due to zero-point motion of a relatively large number (163) of fullerenes and fullerene derivatives. We have calculated this renormalization using density-functional theory with the frozen-phonon method, finding that it is non-negligible (above 0.1 eV) for systems with relevant technological applications in photovoltaics and that the strength of the renormalization increases with the size of the gap. In addition, we have applied machine learning methods for classification and regression of the renormalizations, finding that they can be approximately predicted using the output of a computationally cheap ground state calculation. Our conclusions are supported by recent research in other systems.
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Affiliation(s)
| | - Eva Armengol
- Artificial Intelligence Research Institute, (IIIA, CSIC) Carrer de Can Planes, s/n, Campus UAB, 08193 Bellaterra, Catalonia, Spain
| | - Àngel García-Cerdaña
- Artificial Intelligence Research Institute, (IIIA, CSIC) Carrer de Can Planes, s/n, Campus UAB, 08193 Bellaterra, Catalonia, Spain
| | - Juan María García-Lastra
- Department of Energy Conversion and Storage, Technical University of Denmark, 2800 Kgs. Lyngby, Denmark
| | - David Carrasco-Busturia
- DTU Chemistry, Technical University of Denmark, DK-2800 Kgs. Lyngby, Denmark
- Division of Theoretical Chemistry and Biology, School of Engineering Sciences in Chemistry, Biotechnology and Health, KTH Royal Institute of Technology, SE-100 44 Stockholm, Sweden.
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Killalea CE, Samperi M, Siligardi G, Amabilino DB. Imaging deposition-dependent supramolecular chiral organisation. Chem Commun (Camb) 2022; 58:4468-4471. [PMID: 35297921 DOI: 10.1039/d1cc06790g] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Thin films of a chiral diketopyrrolopyrrole derivative were imaged with spatially-defined Mueller Matrix Polarimetry, focussing on the Circular Dichroism signal, giving unique insight into the impact that deposition techniques and thermal annealing can have on chiral supramolecular structures in the solid state, where homogeneity was observed for spun-coated films while drop-coating afforded chiroptical diversity in the material, a feature invisible to absorption spectroscopy or optical microscopy.
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Affiliation(s)
- C Elizabeth Killalea
- School of Chemistry and GSK Carbon Neutral Laboratories for Sustainable Chemistry, University of Nottingham, Triumph Road, Nottingham, NG7 2TU, UK.,School of Physics and Astronomy, The University of Nottingham, University Park, Nottingham, NG7 2RD, UK
| | - Mario Samperi
- School of Chemistry and GSK Carbon Neutral Laboratories for Sustainable Chemistry, University of Nottingham, Triumph Road, Nottingham, NG7 2TU, UK
| | - Giuliano Siligardi
- Diamond Light Source, Harwell Science and Innovation Campus, Didcot, Oxfordshire OX11 0DE, UK
| | - David B Amabilino
- School of Chemistry and GSK Carbon Neutral Laboratories for Sustainable Chemistry, University of Nottingham, Triumph Road, Nottingham, NG7 2TU, UK.,Institut de Ciència de Materials de Barcelona (ICMAB-CSIC), Campus Universitari de Cerdanyola, 08193 Spain
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Matsumoto F, Sumino S, Iwai T, Ito T. Design of Linearly Substituted Fullerene Bis-Adducts with High Dielectric Constants Based on Theoretical Calculations. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2021. [DOI: 10.1246/bcsj.20210132] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Affiliation(s)
- Fukashi Matsumoto
- Research Division of Organic Materials, Osaka Research Institute of Industrial Science and Technology, 1-6-50 Morinomiya, Joto-ku, Osaka 536-8553, Japan
| | - Shuhei Sumino
- Research Division of Organic Materials, Osaka Research Institute of Industrial Science and Technology, 1-6-50 Morinomiya, Joto-ku, Osaka 536-8553, Japan
| | - Toshiyuki Iwai
- Research Division of Organic Materials, Osaka Research Institute of Industrial Science and Technology, 1-6-50 Morinomiya, Joto-ku, Osaka 536-8553, Japan
| | - Takatoshi Ito
- Research Division of Organic Materials, Osaka Research Institute of Industrial Science and Technology, 1-6-50 Morinomiya, Joto-ku, Osaka 536-8553, Japan
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Kornman CT, Li L, Weldeab AO, Ghiviriga I, Abboud KA, Castellano RK. Photoisomerization of dicyanorhodanine-functionalized thiophenes. Chem Sci 2020; 11:10190-10197. [PMID: 34094283 PMCID: PMC8162279 DOI: 10.1039/d0sc04409a] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
π-Conjugated oligomers functionalized with the popular dicyanorhodanine (RCN) electron acceptor are shown to be susceptible to photo-induced Z/E isomerization. The stereochemistry of two model RCN-functionalized thiophenes is confirmed by single crystal X-ray analysis and 2D NMR, and shown to be the thermodynamically stable Z form. Relative energies, Z/E configurations, and conformational preferences are modelled using density functional theory (DFT). The photophysical properties of the model compounds are explored experimentally and computationally; the Z and E isomers display similar absorption profiles with significant spectral overlap and are inseparable upon irradiation to a photostationary state. The well-behaved photoisomerization process is routinely observable by thin-layer chromatography, UV-vis, and NMR, and the photochemical behavior of the two RCN-functionalized thiophenes is characterized under varying wavelengths of irradiation. Ultraviolet (254 nm) irradiation results in photostationary state compositions of 56/44 and 69/31 Z-isomer/E-isomer for substrates functionalized with one thiophene and two thiophenes, respectively. Ambient laboratory lighting results in excess of 10 percent E-isomer for each species in solution, an important consideration for processing such materials, particularly for organic photovoltaic applications. In addition, a photoswitching experiment is conducted to demonstrate the reversible nature of the photoreaction, where little evidence of fatigue is observed over numerous switching cycles. Overall, this work showcases an approach to characterize the stereochemistry and photochemical behavior of dicyanorhodanine-functionalized thiophenes, widely used components of functional molecules and materials.
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Affiliation(s)
- Cory T Kornman
- Department of Chemistry, University of Florida PO Box 117200 Gainesville FL 32611 USA
| | - Lei Li
- Department of Chemistry, University of Florida PO Box 117200 Gainesville FL 32611 USA .,Department of Materials Science and Engineering, Center for Optical Materials Science and Engineering Technologies (COMSET), Clemson University Clemson SC 29634 USA
| | - Asmerom O Weldeab
- Department of Chemistry, University of Florida PO Box 117200 Gainesville FL 32611 USA
| | - Ion Ghiviriga
- Department of Chemistry, University of Florida PO Box 117200 Gainesville FL 32611 USA
| | - Khalil A Abboud
- Department of Chemistry, University of Florida PO Box 117200 Gainesville FL 32611 USA
| | - Ronald K Castellano
- Department of Chemistry, University of Florida PO Box 117200 Gainesville FL 32611 USA
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Nagasawa S, Al-Naamani E, Saeki A. Computer-Aided Screening of Conjugated Polymers for Organic Solar Cell: Classification by Random Forest. J Phys Chem Lett 2018; 9:2639-2646. [PMID: 29733216 DOI: 10.1021/acs.jpclett.8b00635] [Citation(s) in RCA: 58] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
Owing to the diverse chemical structures, organic photovoltaic (OPV) applications with a bulk heterojunction framework have greatly evolved over the last two decades, which has produced numerous organic semiconductors exhibiting improved power conversion efficiencies (PCEs). Despite the recent fast progress in materials informatics and data science, data-driven molecular design of OPV materials remains challenging. We report a screening of conjugated molecules for polymer-fullerene OPV applications by supervised learning methods (artificial neural network (ANN) and random forest (RF)). Approximately 1000 experimental parameters including PCE, molecular weight, and electronic properties are manually collected from the literature and subjected to machine learning with digitized chemical structures. Contrary to the low correlation coefficient in ANN, RF yields an acceptable accuracy, which is twice that of random classification. We demonstrate the application of RF screening for the design, synthesis, and characterization of a conjugated polymer, which facilitates a rapid development of optoelectronic materials.
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Affiliation(s)
- Shinji Nagasawa
- Department of Applied Chemistry, Graduate School of Engineering , Osaka University , 2-1 Yamadaoka , Suita, Osaka 565-0871 , Japan
| | - Eman Al-Naamani
- Department of Applied Chemistry, Graduate School of Engineering , Osaka University , 2-1 Yamadaoka , Suita, Osaka 565-0871 , Japan
| | - Akinori Saeki
- Department of Applied Chemistry, Graduate School of Engineering , Osaka University , 2-1 Yamadaoka , Suita, Osaka 565-0871 , Japan
- Precursory Research for Embryonic Science and Technology (PRESTO) , Japan Science and Technology Agency , 4-1-8 Honcho , Kawaguchi, Saitama 332-0012 , Japan
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Zhan XX, Zhang X, Dai SM, Li SH, Lu XZ, Deng LL, Xie SY, Huang RB, Zheng LS. Tailorable PC71BM Isomers: Using the Most Prevalent Electron Acceptor to Obtain High-Performance Polymer Solar Cells. Chemistry 2016; 22:18709-18713. [DOI: 10.1002/chem.201604263] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2016] [Indexed: 11/10/2022]
Affiliation(s)
- Xin-Xing Zhan
- Department of Chemistry; College of Chemistry and Chemical Engineering; State Key Laboratory for Physical Chemistry of Solid Surfaces; iChEM (Collaborative Innovation Center of Chemistry for Energy Materials); Xiamen University; Xiamen 361005 P.R. China
- School of Guizhou Normal University; Guiyang 550001 P.R. China
| | - Xin Zhang
- Department of Chemistry; College of Chemistry and Chemical Engineering; State Key Laboratory for Physical Chemistry of Solid Surfaces; iChEM (Collaborative Innovation Center of Chemistry for Energy Materials); Xiamen University; Xiamen 361005 P.R. China
| | - Si-Min Dai
- Department of Chemistry; College of Chemistry and Chemical Engineering; State Key Laboratory for Physical Chemistry of Solid Surfaces; iChEM (Collaborative Innovation Center of Chemistry for Energy Materials); Xiamen University; Xiamen 361005 P.R. China
| | - Shu-Hui Li
- Department of Chemistry; College of Chemistry and Chemical Engineering; State Key Laboratory for Physical Chemistry of Solid Surfaces; iChEM (Collaborative Innovation Center of Chemistry for Energy Materials); Xiamen University; Xiamen 361005 P.R. China
| | - Xu-Zhai Lu
- Department of Chemistry; College of Chemistry and Chemical Engineering; State Key Laboratory for Physical Chemistry of Solid Surfaces; iChEM (Collaborative Innovation Center of Chemistry for Energy Materials); Xiamen University; Xiamen 361005 P.R. China
| | - Lin-Long Deng
- Pen-Tung Sah Institute of Micro-Nano Science and Technology; Xiamen University; Xiamen 361005 P.R. China
| | - Su-Yuan Xie
- Department of Chemistry; College of Chemistry and Chemical Engineering; State Key Laboratory for Physical Chemistry of Solid Surfaces; iChEM (Collaborative Innovation Center of Chemistry for Energy Materials); Xiamen University; Xiamen 361005 P.R. China
| | - Rong-Bin Huang
- Department of Chemistry; College of Chemistry and Chemical Engineering; State Key Laboratory for Physical Chemistry of Solid Surfaces; iChEM (Collaborative Innovation Center of Chemistry for Energy Materials); Xiamen University; Xiamen 361005 P.R. China
| | - Lan-Sun Zheng
- Department of Chemistry; College of Chemistry and Chemical Engineering; State Key Laboratory for Physical Chemistry of Solid Surfaces; iChEM (Collaborative Innovation Center of Chemistry for Energy Materials); Xiamen University; Xiamen 361005 P.R. China
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