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Aranda D, Santoro F. Vibronic Spectra of π-Conjugated Systems with a Multitude of Coupled States: A Protocol Based on Linear Vibronic Coupling Models and Quantum Dynamics Tested on Hexahelicene. J Chem Theory Comput 2021; 17:1691-1700. [PMID: 33606542 DOI: 10.1021/acs.jctc.1c00022] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
Hexahelicene is a prototype of an extended π-conjugated system with axial chirality. Its absorption (ABS) and electronic circular dichroism (ECD) spectra show vibronic features and strong nonadiabatic effects, challenging currently available computational methods. Here, we compute the nonadiabatic ABS and ECD vibronic spectra of hexahelicene in the full energy range, covering ∼2 eV and 14-18 coupled electronic states, including all of the relevant nuclear coordinates. To this end, we exploit a recently proposed protocol that uses time-dependent density functional theory to parameterize linear vibronic coupling models comprising several electronic states. Spectra are computed through quantum dynamical propagations with multiconfigurational time-dependent Hartree methods. Our results nicely reproduce the experimental spectra providing an assignment of the main observed bands. On the contrary, we document that the application of the Herzberg-Teller intensity-borrowing theory leads to large artifacts. The proposed approach is of general applicability for rigid systems and represents a viable tool for studying the photophysical properties of π-conjugated systems characterized by a dense manifold of interacting electronic states.
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Affiliation(s)
- Daniel Aranda
- CNR-Consiglio Nazionale delle Ricerche, Istituto di Chimica dei Composti Organo Metallici (ICCOM-CNR), SS di Pisa, Area della Ricerca, via G. Moruzzi 1, I-56124 Pisa, Italy
| | - Fabrizio Santoro
- CNR-Consiglio Nazionale delle Ricerche, Istituto di Chimica dei Composti Organo Metallici (ICCOM-CNR), SS di Pisa, Area della Ricerca, via G. Moruzzi 1, I-56124 Pisa, Italy
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2
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Ozcelik A, Pereira-Cameselle R, Alonso-Gómez JL. From Allenes to Spirobifluorenes: On the Way to Device-compatible Chiroptical Systems. CURR ORG CHEM 2020. [DOI: 10.2174/1385272824999201013164534] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
The last decade has seen a huge growth in the construction of chiral systems to
expand the scope of chiroptical applications. Dependence of chiroptical response on molecular
conformation typically leads to low chiroptical intensities of chiral systems that feature
several conformations in solution. In this respect, allenes were employed for the preparation
of open and cyclic oligomers as well as molecular cages, presenting remarkable chiroptical
responses in solution. Their molecular chirality was also transferred to metal surfaces, yet
photoisomerization of allenes limited their further exploration. In search of a more robust
chiral axis, theoretical and experimental studies confirmed that spirobifluorenes could give
rise to stable systems with tailored optical and chiroptical properties. Additionally, incorporating
a conformational lock into spirobifluorene cyclic architectures served as an efficient
strategy towards the generation of distinct helical molecular orbitals. This review article outlines our results on developing
device-compatible chiroptical systems through axially chiral allenes and spirobifluorenes. The contribution
from other research groups is presented briefly.
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Affiliation(s)
- Ani Ozcelik
- Department of Organic Chemistry, Faculty of Chemistry, University of Vigo, Vigo, Spain
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3
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Castro-Fernández S, Álvarez-García J, García-Río L, Silva-López C, Cid MM. Double Protonation of a cis-Bipyridoallenophane Detected via Chiral-Sensing Switch: The Role of Ion Pairs. Org Lett 2019; 21:5898-5902. [DOI: 10.1021/acs.orglett.9b02024] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Silvia Castro-Fernández
- Departamento de Química Orgánica, Edificio Ciencias Experimentais, Campus Lagoas-Marcosende, Vigo E-36310, Spain
| | - Jonathan Álvarez-García
- Departamento de Química Orgánica, Edificio Ciencias Experimentais, Campus Lagoas-Marcosende, Vigo E-36310, Spain
| | - Luís García-Río
- Centro Singular de Investigación en Química Biolóxica e Materiais Moleculares (CIQUS), Departamento de Química Física, Universidade de Santiago de Compostela, 15782 Santiago de Compostela, Spain
| | - Carlos Silva-López
- Departamento de Química Orgánica, Edificio Ciencias Experimentais, Campus Lagoas-Marcosende, Vigo E-36310, Spain
| | - María Magdalena Cid
- Departamento de Química Orgánica, Edificio Ciencias Experimentais, Campus Lagoas-Marcosende, Vigo E-36310, Spain
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Fernández B, Rodríguez R, Rizzo A, Quiñoá E, Riguera R, Freire F. Predicting the Helical Sense of Poly(phenylacetylene)s from their Electron Circular Dichroism Spectra. Angew Chem Int Ed Engl 2018; 57:3666-3670. [PMID: 29405581 DOI: 10.1002/anie.201713164] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2017] [Revised: 01/18/2018] [Indexed: 01/20/2023]
Abstract
The calculated ECD spectrum (time-dependent density functional theory TD-DFT) for small oligomers of polyphenylacetylenes (PPAs) show a very good match with the experimental spectra of the PPA polymers, particularly with the first Cotton band associated to the helical sense of the internal polyenic backbone. This has been proven with a series of PPAs representative of cis-cisoidal, cis-transoidal, compressed and stretched polyene backbones, with identical or opposite internal/external rotational senses and allows the prediction of the helical sense of the internal helix of a PPA directly from its CD spectra.
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Affiliation(s)
- Berta Fernández
- Departmento de Química Física, Universidade de Santiago de Compostela, 15782, Santiago de Compostela, Spain
| | - Rafael Rodríguez
- Centro Singular de investigación en Química Biolóxica e, Materiais Moleculares (CiQUS) e Departamento de Química Orgánica, Universidade de Santiago de Compostela, Jenaro de la Fuente s/n (Edificio CiQUS), Santiago de Compostela, Spain
| | - Antonio Rizzo
- Instituto per i Processi Chimico-Fisici (IPCF), Consiglio Nazionale delle Ricerche (CNR), Area della Ricerca di Pisa, 56124, Pisa, Italy
| | - Emilio Quiñoá
- Centro Singular de investigación en Química Biolóxica e, Materiais Moleculares (CiQUS) e Departamento de Química Orgánica, Universidade de Santiago de Compostela, Jenaro de la Fuente s/n (Edificio CiQUS), Santiago de Compostela, Spain
| | - Ricardo Riguera
- Centro Singular de investigación en Química Biolóxica e, Materiais Moleculares (CiQUS) e Departamento de Química Orgánica, Universidade de Santiago de Compostela, Jenaro de la Fuente s/n (Edificio CiQUS), Santiago de Compostela, Spain
| | - Félix Freire
- Centro Singular de investigación en Química Biolóxica e, Materiais Moleculares (CiQUS) e Departamento de Química Orgánica, Universidade de Santiago de Compostela, Jenaro de la Fuente s/n (Edificio CiQUS), Santiago de Compostela, Spain
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Fernández B, Rodríguez R, Rizzo A, Quiñoá E, Riguera R, Freire F. Predicting the Helical Sense of Poly(phenylacetylene)s from their Electron Circular Dichroism Spectra. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201713164] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Affiliation(s)
- Berta Fernández
- Departmento de Química Física; Universidade de Santiago de Compostela; 15782 Santiago de Compostela Spain
| | - Rafael Rodríguez
- Centro Singular de investigación en Química Biolóxica e, Materiais Moleculares (CiQUS) e Departamento de Química Orgánica; Universidade de Santiago de Compostela, Jenaro de la Fuente s/n (Edificio CiQUS); Santiago de Compostela Spain
| | - Antonio Rizzo
- Instituto per i Processi Chimico-Fisici (IPCF); Consiglio Nazionale delle Ricerche (CNR), Area della Ricerca di Pisa; 56124 Pisa Italy
| | - Emilio Quiñoá
- Centro Singular de investigación en Química Biolóxica e, Materiais Moleculares (CiQUS) e Departamento de Química Orgánica; Universidade de Santiago de Compostela, Jenaro de la Fuente s/n (Edificio CiQUS); Santiago de Compostela Spain
| | - Ricardo Riguera
- Centro Singular de investigación en Química Biolóxica e, Materiais Moleculares (CiQUS) e Departamento de Química Orgánica; Universidade de Santiago de Compostela, Jenaro de la Fuente s/n (Edificio CiQUS); Santiago de Compostela Spain
| | - Félix Freire
- Centro Singular de investigación en Química Biolóxica e, Materiais Moleculares (CiQUS) e Departamento de Química Orgánica; Universidade de Santiago de Compostela, Jenaro de la Fuente s/n (Edificio CiQUS); Santiago de Compostela Spain
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How and How Much Molecular Conformation Affects Electronic Circular Dichroism: The Case of 1,1-Diarylcarbinols. Molecules 2018; 23:molecules23010128. [PMID: 29315220 PMCID: PMC6017593 DOI: 10.3390/molecules23010128] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2017] [Revised: 12/29/2017] [Accepted: 01/08/2018] [Indexed: 11/25/2022] Open
Abstract
Chiroptical spectra such as electronic circular dichroism (ECD) are said to be much more sensitive to conformation than their non-chiroptical counterparts, however, it is difficult to demonstrate such a common notion in a clear-cut way. We run DFT and TDDFT calculations on two closely related 1,1-diarylmethanols which show mirror-image ECD spectra for the same absolute configuration. We demonstrate that the main reason for the different chiroptical response of the two compounds lies in different conformational ensembles, caused by a single hydrogen-to-methyl substitution. We conclude that two compounds, having the same configuration but different conformation, may exhibit mirror-image ECD signals, stressing the importance and impact of conformational factors on ECD spectra.
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Shimizu A, Inoue Y, Mori T. A Combined Experimental and Theoretical Study on the Circular Dichroism of Staggered and Eclipsed Forms of Dimethoxy[2.2]-, [3.2]-, and [3.3]Pyridinophanes and Their Protonated Forms. J Phys Chem A 2017; 121:8389-8398. [DOI: 10.1021/acs.jpca.7b08623] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Akinori Shimizu
- Department of Applied Chemistry,
Graduate School of Engineering, Osaka University, 2-1 Yamada-oka, Suita, Osaka 565-0871, Japan
| | - Yoshihisa Inoue
- Department of Applied Chemistry,
Graduate School of Engineering, Osaka University, 2-1 Yamada-oka, Suita, Osaka 565-0871, Japan
| | - Tadashi Mori
- Department of Applied Chemistry,
Graduate School of Engineering, Osaka University, 2-1 Yamada-oka, Suita, Osaka 565-0871, Japan
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Padula D, Lee MH, Claridge K, Troisi A. Chromophore-Dependent Intramolecular Exciton–Vibrational Coupling in the FMO Complex: Quantification and Importance for Exciton Dynamics. J Phys Chem B 2017; 121:10026-10035. [DOI: 10.1021/acs.jpcb.7b08020] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Daniele Padula
- Department
of Chemistry, University of Warwick, Coventry CV4 7AL, U.K
| | - Myeong H. Lee
- Department
of Chemistry, University of Warwick, Coventry CV4 7AL, U.K
| | - Kirsten Claridge
- Department
of Chemistry, University of Warwick, Coventry CV4 7AL, U.K
| | - Alessandro Troisi
- Department
of Chemistry, University of Warwick, Coventry CV4 7AL, U.K
- Department
of Chemistry and Materials Innovation Factory, University of Liverpool, Liverpool L69 7ZD, U.K
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Li T, Zhang D, Wang R, Fan Y, Guo X, Liu S, Ma Y, Zhao D. Synthesis, solvent-dependent emission and two-photon absorption of a triangular –[D–π–A]3– macrocycle. Org Chem Front 2017. [DOI: 10.1039/c6qo00845c] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A large π–conjugated macrocycle featuring a –[D–π–A]3– backbone is synthesized, exhibiting strongly solvent-dependent fluorescence and evident two-photon absorption ability.
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Affiliation(s)
- Tian Li
- Beijing National Laboratory for Molecular Sciences
- Centre for the Soft Matter Science and Engineering and the Key Lab of Polymer Chemistry & Physics of the Ministry of Education
- College of Chemistry
- Peking University
- Beijing
| | - Di Zhang
- Beijing National Laboratory for Molecular Sciences
- Centre for the Soft Matter Science and Engineering and the Key Lab of Polymer Chemistry & Physics of the Ministry of Education
- College of Chemistry
- Peking University
- Beijing
| | - Ranran Wang
- Beijing National Laboratory for Molecular Sciences
- Centre for the Soft Matter Science and Engineering and the Key Lab of Polymer Chemistry & Physics of the Ministry of Education
- College of Chemistry
- Peking University
- Beijing
| | - Yuanpeng Fan
- Beijing National Laboratory for Molecular Sciences
- Centre for the Soft Matter Science and Engineering and the Key Lab of Polymer Chemistry & Physics of the Ministry of Education
- College of Chemistry
- Peking University
- Beijing
| | - Xinyan Guo
- Beijing National Laboratory for Molecular Sciences
- Centre for the Soft Matter Science and Engineering and the Key Lab of Polymer Chemistry & Physics of the Ministry of Education
- College of Chemistry
- Peking University
- Beijing
| | - Shuai Liu
- Beijing National Laboratory for Molecular Sciences
- Centre for the Soft Matter Science and Engineering and the Key Lab of Polymer Chemistry & Physics of the Ministry of Education
- College of Chemistry
- Peking University
- Beijing
| | - Yuguo Ma
- Beijing National Laboratory for Molecular Sciences
- Centre for the Soft Matter Science and Engineering and the Key Lab of Polymer Chemistry & Physics of the Ministry of Education
- College of Chemistry
- Peking University
- Beijing
| | - Dahui Zhao
- Beijing National Laboratory for Molecular Sciences
- Centre for the Soft Matter Science and Engineering and the Key Lab of Polymer Chemistry & Physics of the Ministry of Education
- College of Chemistry
- Peking University
- Beijing
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Míguez-Lago S, Cid MM, Alonso-Gómez JL. Covalent Organic Helical Cages as Sandwich Compound Containers. European J Org Chem 2016. [DOI: 10.1002/ejoc.201600997] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Sandra Míguez-Lago
- Organic Chemistry Department; Vigo University; Lagoas-Marcosende s/n 36310 Vigo Galicia Spain
| | - M. Magdalena Cid
- Organic Chemistry Department; Vigo University; Lagoas-Marcosende s/n 36310 Vigo Galicia Spain
| | - J. Lorenzo Alonso-Gómez
- Organic Chemistry Department; Vigo University; Lagoas-Marcosende s/n 36310 Vigo Galicia Spain
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11
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Santoro F, Jacquemin D. Going beyond the vertical approximation with time-dependent density functional theory. WILEY INTERDISCIPLINARY REVIEWS-COMPUTATIONAL MOLECULAR SCIENCE 2016. [DOI: 10.1002/wcms.1260] [Citation(s) in RCA: 121] [Impact Index Per Article: 15.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Fabrizio Santoro
- CNR-Consiglio Nazionale delle Ricerche; Istituto di Chimica dei Composti OrganoMetallici (ICCOM-CNR); Pisa Italy
| | - Denis Jacquemin
- CEISAM, UMR CNRS 6230; Université de Nantes; Nantes France
- Institut Universitaire de France; Paris France
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12
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Míguez-Lago S, Llamas-Saiz AL, Magdalena Cid M, Alonso-Gómez JL. A Covalent Organic Helical Cage with Remarkable Chiroptical Amplification. Chemistry 2015; 21:18085-8. [DOI: 10.1002/chem.201503994] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2015] [Indexed: 11/12/2022]
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