51
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Das S, Choudhury A, Mandal A, Kumar C, Ranjan Sahoo S, Bedi A, Shekhar Karmakar H, Gopal Ghosh N, Dey S, Krishnan Iyer P, Bhattacharyya S, Zade SS. An unconventional route to an ambipolar azaheterocycle and its in situ generated radical anion. Org Biomol Chem 2021; 19:5114-5120. [PMID: 34018542 DOI: 10.1039/d1ob00826a] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Herein we report the synthesis, characterization and application of an azaheterocycle 4 obtained via an unprecedented C-N coupling. The neutral azaheterocycle undergoes one-electron reduction to form an air-stable radical anion in situ, which provides added benefit towards operational stability of the device during n-type charge transport. The unusual stability of this radical anion is due to the fact that the fused cyclopentane ring upon reduction forms aromatic cyclopentadienyl anion, and the negative charge delocalizes over the nearly planar azaheterocycle core. The present azaheterocycle can be considered as a mimic of a fullerene fragment, which shows balanced ambipolar charge transport in space charge limited current (SCLC) devices with moderate hole (μh) and electron (μe) mobilities (μh = 2.96 × 10-3 cm2 V-1 s-1 and μe = 1.11 × 10-4 cm2 V-1 s-1). Theoretical studies such as nucleus independent chemical shifts (NICS) calculations, anisotropy of the induced current density (ACID) plots, spin density mapping and anisotropic mobility calculations were performed to corroborate the experimental findings.
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Affiliation(s)
- Sarasija Das
- Department of Chemical Sciences, Indian Institute of Science Education and Research Kolkata, Mohanpur-741246, West Bengal, India.
| | - Anwesha Choudhury
- Department of Chemistry & Centre for Nanotechnology, Indian Institute of Technology Guwahati, Guwahati 781039, Assam, India.
| | - Arnab Mandal
- Department of Chemical Sciences, Indian Institute of Science Education and Research Kolkata, Mohanpur-741246, West Bengal, India.
| | - Chandan Kumar
- Department of Chemical Sciences, Indian Institute of Science Education and Research Kolkata, Mohanpur-741246, West Bengal, India.
| | - Smruti Ranjan Sahoo
- High Performance Computing Lab, Department of Physics, Indian Institute of Technology (ISM), Dhanbad, Jharkhand-826004, India
| | - Anjan Bedi
- Department of Chemistry, SRM Institute of Science and Technology, Chennai 603203, India
| | - Himadri Shekhar Karmakar
- Department of Chemical Sciences, Indian Institute of Science Education and Research Kolkata, Mohanpur-741246, West Bengal, India.
| | - Nani Gopal Ghosh
- Department of Chemical Sciences, Indian Institute of Science Education and Research Kolkata, Mohanpur-741246, West Bengal, India.
| | - Somnath Dey
- Institute of Crystallography, RWTH Aachen University, Jägerstraße 17-19, 52066 Aachen, Germany
| | - Parameswar Krishnan Iyer
- Department of Chemistry & Centre for Nanotechnology, Indian Institute of Technology Guwahati, Guwahati 781039, Assam, India.
| | - Sayan Bhattacharyya
- Department of Chemical Sciences, Indian Institute of Science Education and Research Kolkata, Mohanpur-741246, West Bengal, India.
| | - Sanjio S Zade
- Department of Chemical Sciences, Indian Institute of Science Education and Research Kolkata, Mohanpur-741246, West Bengal, India.
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52
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Affiliation(s)
- Yimin Liang
- Key Laboratory of Precise Synthesis of Functional Molecules of Zhejiang Province, School of Science, Westlake University, 18 Shilongshan Road, Hangzhou, Zhejiang 310024, P. R. China
- Westlake Institute for Advanced Study, 18 Shilongshan Road, Hangzhou, Zhejiang 310024, P. R. China
| | - Min Tang
- Department of Chemistry, Zhejiang University, Hangzhou, Zhejiang 310027, P. R. China
- Key Laboratory of Precise Synthesis of Functional Molecules of Zhejiang Province, School of Science, Westlake University, 18 Shilongshan Road, Hangzhou, Zhejiang 310024, P. R. China
- Westlake Institute for Advanced Study, 18 Shilongshan Road, Hangzhou, Zhejiang 310024, P. R. China
| | - Zhichang Liu
- Key Laboratory of Precise Synthesis of Functional Molecules of Zhejiang Province, School of Science, Westlake University, 18 Shilongshan Road, Hangzhou, Zhejiang 310024, P. R. China
- Westlake Institute for Advanced Study, 18 Shilongshan Road, Hangzhou, Zhejiang 310024, P. R. China
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53
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Hu Y, Thomas MB, Webre WA, Moss A, Jinadasa RGW, Nesterov VN, D'Souza F, Wang H. Nickel(II) Bisporphyrin‐Fused Pentacenes Exhibiting Abnormal High Stability. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202008076] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Yi Hu
- Department of Chemistry University of North Texas 1155 Union Circle, #305070 Denton TX 76203 USA
| | - Michael B. Thomas
- Department of Chemistry University of North Texas 1155 Union Circle, #305070 Denton TX 76203 USA
| | - Whitney A. Webre
- Department of Chemistry University of North Texas 1155 Union Circle, #305070 Denton TX 76203 USA
| | - Austen Moss
- Department of Chemistry University of North Texas 1155 Union Circle, #305070 Denton TX 76203 USA
| | - R. G. Waruna Jinadasa
- Department of Chemistry University of North Texas 1155 Union Circle, #305070 Denton TX 76203 USA
| | - Vladimir N. Nesterov
- Department of Chemistry University of North Texas 1155 Union Circle, #305070 Denton TX 76203 USA
| | - Francis D'Souza
- Department of Chemistry University of North Texas 1155 Union Circle, #305070 Denton TX 76203 USA
| | - Hong Wang
- Department of Chemistry University of North Texas 1155 Union Circle, #305070 Denton TX 76203 USA
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54
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Hosokawa T, Tsurusaki A, Kamikawa K. Assembly of [5]Helicene Subunits by Palladium-Catalyzed Reactions: Synthesis, Structures, Properties, and Theoretical Study of Multiple Helicenes. J SYN ORG CHEM JPN 2020. [DOI: 10.5059/yukigoseikyokaishi.78.1013] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
| | - Akihiro Tsurusaki
- Department of Chemistry, Graduate School of Science, Osaka Prefecture University
| | - Ken Kamikawa
- Department of Chemistry, Graduate School of Science, Osaka Prefecture University
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55
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Bedi A, Manor Armon A, Gidron O. Effect of Twisting on the Capture and Release of Singlet Oxygen by Tethered Twisted Acenes. Org Lett 2020; 22:7809-7813. [PMID: 32966095 PMCID: PMC8323967 DOI: 10.1021/acs.orglett.0c02666] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
![]()
The use of polyaromatic hydrocarbons
to capture and release singlet oxygen is of considerable importance
in materials chemistry, synthesis, and photodynamic therapy. Here
we studied the ability of a series of tethered twistacenes, possessing
different degrees of backbone twist, to capture and release singlet
oxygen via the reversible Diels–Alder reaction. When the twistacene
acts as both a sensitizer and a diene, the photo-oxidation rate depends
on the extinction coefficient of the irradiation wavelength. However,
when the twistacenes function solely as a diene, the rate of photo-oxidation
increases with increasing twist. The rate of the reverse reaction,
the singlet oxygen release, also increases with increasing twist.
The calculated transition state energy decreases with increasing twist,
which can explain the observed trend. The presence of the tether significantly
increases the reversibility of the reaction, which can proceed in
repeated forward and reverse cycles in very high yield under mild
conditions, as required for molecular switches.
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Affiliation(s)
- Anjan Bedi
- Institute of Chemistry, The Hebrew University of Jerusalem, Edmond J. Safra Campus, Jerusalem 91904, Israel
| | - Amit Manor Armon
- Institute of Chemistry, The Hebrew University of Jerusalem, Edmond J. Safra Campus, Jerusalem 91904, Israel
| | - Ori Gidron
- Institute of Chemistry, The Hebrew University of Jerusalem, Edmond J. Safra Campus, Jerusalem 91904, Israel
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56
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Kirschbaum T, Rominger F, Mastalerz M. An Isosteric Triaza Analogue of a Polycyclic Aromatic Hydrocarbon Monkey Saddle. Chemistry 2020; 26:14560-14564. [PMID: 32539193 PMCID: PMC7756504 DOI: 10.1002/chem.202002826] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2020] [Indexed: 01/06/2023]
Abstract
Since a few years, the interest in negatively-curved fused polycyclic aromatic hydrocarbons (PAHs) has significantly increased. Recently, the first chiral negatively-curved PAH with the topology of a monkey saddle was introduced. Herein the synthesis of its triaza congener is reported. The influence of this CH↔N exchange on photophysical and electrochemical properties is studied as well as the isomerization process of the enantiomers. The aza analogue has a significantly higher inversion barrier, which makes it easier to handle at room temperature. All experimental results are underpinned by theoretical DFT calculations.
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Affiliation(s)
- Tobias Kirschbaum
- Organisch-Chemisches Institut, Ruprecht-Karls-Universität Heidelberg, Im Neuenheimer Feld 270, 69120, Heidelberg, Germany
| | - Frank Rominger
- Organisch-Chemisches Institut, Ruprecht-Karls-Universität Heidelberg, Im Neuenheimer Feld 270, 69120, Heidelberg, Germany
| | - Michael Mastalerz
- Organisch-Chemisches Institut, Ruprecht-Karls-Universität Heidelberg, Im Neuenheimer Feld 270, 69120, Heidelberg, Germany
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57
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Mateos-Martín J, Carini M, Melle-Franco M, Mateo-Alonso A. Increasing and dispersing strain in pyrene-fused azaacenes. Chem Commun (Camb) 2020; 56:11457-11460. [PMID: 32852499 DOI: 10.1039/d0cc04735j] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A new strategy to obtain distorted pyrene-fused azaacenes is reported. The careful alignment and selection of substituents give rise to highly twisted pyrene-fused azaacenes. A combined global and local theoretical analysis shows how the strain is generated and dispersed across the aromatic backbone. Furthermore, simulation of the observed optoelectronic properties shines light on the structural factors that govern the properties of twisted pyrene-fused azaacenes.
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Affiliation(s)
- Javier Mateos-Martín
- POLYMAT, University of the Basque Country UPV/EHU, Avenida de Tolosa 72, E-20018, Donostia-San Sebastián, Spain.
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58
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Hu Y, Thomas MB, Webre WA, Moss A, Jinadasa RGW, Nesterov VN, D'Souza F, Wang H. Nickel(II) Bisporphyrin-Fused Pentacenes Exhibiting Abnormal High Stability. Angew Chem Int Ed Engl 2020; 59:20075-20082. [PMID: 32725753 DOI: 10.1002/anie.202008076] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2020] [Indexed: 11/12/2022]
Abstract
A series of largely π-extended multichromophoric molecules including cross-conjugated, half cross-conjugated, conjugation-interrupted and linearly conjugated systems were synthesized and characterized. These multichromophoric molecular systems revealed interesting structural-property relationships. Bisporphyrin-fused pentacenes Pen-1 b and Pen-2 a showed rich redox chemistry with 7 and 8 observable redox states, respectively. The linearly-conjugated bisporphyrin-fused pentacenes (Pen-1 b and Pen-2 a) possess much narrower HOMO-LUMO gaps (1.65 and 1.42 eV redox, respectively) and higher HOMO energy levels than those of their pentacene analogues (2.23 and 2.01 eV redox, respectively), similar to those of much less stable hexacenes and heptacenes. An estimated half-life of >945 h was obtained for bisporphyrin-fused pentacene Pen-2 a, which is much longer than that of its pentacene analogue (BPE-P, half-life, 33 h).
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Affiliation(s)
- Yi Hu
- Department of Chemistry, University of North Texas, 1155 Union Circle, #305070, Denton, TX, 76203, USA
| | - Michael B Thomas
- Department of Chemistry, University of North Texas, 1155 Union Circle, #305070, Denton, TX, 76203, USA
| | - Whitney A Webre
- Department of Chemistry, University of North Texas, 1155 Union Circle, #305070, Denton, TX, 76203, USA
| | - Austen Moss
- Department of Chemistry, University of North Texas, 1155 Union Circle, #305070, Denton, TX, 76203, USA
| | - R G Waruna Jinadasa
- Department of Chemistry, University of North Texas, 1155 Union Circle, #305070, Denton, TX, 76203, USA
| | - Vladimir N Nesterov
- Department of Chemistry, University of North Texas, 1155 Union Circle, #305070, Denton, TX, 76203, USA
| | - Francis D'Souza
- Department of Chemistry, University of North Texas, 1155 Union Circle, #305070, Denton, TX, 76203, USA
| | - Hong Wang
- Department of Chemistry, University of North Texas, 1155 Union Circle, #305070, Denton, TX, 76203, USA
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59
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Fujise K, Tsurumaki E, Fukuhara G, Hara N, Imai Y, Toyota S. Multiple Fused Anthracenes as Helical Polycyclic Aromatic Hydrocarbon Motif for Chiroptical Performance Enhancement. Chem Asian J 2020; 15:2456-2461. [DOI: 10.1002/asia.202000394] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2020] [Revised: 06/19/2020] [Indexed: 01/18/2023]
Affiliation(s)
- Kei Fujise
- Department of ChemistrySchool of ScienceTokyo Institute of Technology 2-12-1 Ookayama Meguro-ku Tokyo 152-8551 Japan
| | - Eiji Tsurumaki
- Department of ChemistrySchool of ScienceTokyo Institute of Technology 2-12-1 Ookayama Meguro-ku Tokyo 152-8551 Japan
| | - Gaku Fukuhara
- Department of ChemistrySchool of ScienceTokyo Institute of Technology 2-12-1 Ookayama Meguro-ku Tokyo 152-8551 Japan
- JST, PRESTO 4-1-8 Honcho Kawaguchi Saitama 332-0012 Japan
| | - Nobuyuki Hara
- Department of Applied ChemistryFaculty of Science and EngineeringKindai University 3-4-1 Kowakae Higashi Osaka Osaka 577-8502 Japan
| | - Yoshitane Imai
- Department of Applied ChemistryFaculty of Science and EngineeringKindai University 3-4-1 Kowakae Higashi Osaka Osaka 577-8502 Japan
| | - Shinji Toyota
- Department of ChemistrySchool of ScienceTokyo Institute of Technology 2-12-1 Ookayama Meguro-ku Tokyo 152-8551 Japan
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60
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Kumar R, Aggarwal H, Srivastava A. Of Twists and Curves: Electronics, Photophysics, and Upcoming Applications of Non-Planar Conjugated Organic Molecules. Chemistry 2020; 26:10653-10675. [PMID: 32118325 DOI: 10.1002/chem.201905071] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2019] [Revised: 02/02/2020] [Indexed: 01/02/2023]
Abstract
Non-planar conjugated organic molecules (NPCOMs) contain π-conjugation across their length and also exhibit asymmetry in their conformation. In other words, certain molecular fragments in NPCOMs are either twisted or curved out of planarity. This conformational asymmetry in NPCOMs leads to non-uniform charge-distribution across the molecule, with important photophysical and electronic consequences such as altered thermodynamic stability, chemical reactivity, as well as materials properties. Majorly, NPCOMs can be classified as having either Fused or Rotatable architectures. NPCOMs have been the focus of significant scientific attention in the recent past due to their exciting photophysical behavior that includes intramolecular charge-transfer (ICT), thermally activated delayed fluorescence (TADF) and long-lived charge-separated states. In addition, they also have many useful materials characteristics such as biradical character, semi-conductivity, dynamic conformations, and mechanochromism. As a result, rational design of NPCOMs and mapping their structure-property correlations has become imperative. Researchers have executed conformational changes in NPCOMs through a variety of external stimuli such as pH, temperature, anions-cations, solvent, electric potential, and mechanical force in order to tailor their photophysical, optoelectronic and magnetic properties. Converging to these points, this review highlights the lucrative electronic features, photophysical traits and upcoming applications of NPCOMs by a selective survey of the recent scientific literature.
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Affiliation(s)
- Rajesh Kumar
- Department of Chemistry, Indian Institute of Science Education and Research Bhopal (IISER Bhopal), Bhauri, Bhopal Bypass Road, Bhopal, 462066, India
| | - Himanshu Aggarwal
- Department of Chemistry, Indian Institute of Science Education and Research Bhopal (IISER Bhopal), Bhauri, Bhopal Bypass Road, Bhopal, 462066, India
| | - Aasheesh Srivastava
- Department of Chemistry, Indian Institute of Science Education and Research Bhopal (IISER Bhopal), Bhauri, Bhopal Bypass Road, Bhopal, 462066, India
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61
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Zreid MS, Tabasi ZA, Ma X, Wang T, Almatarneh MH, Zhao Y. Highly Twisted Aryl-Anthraquinodimethanes: Synthesis, Characterization, and Fluorescence Sensing of TNT. European J Org Chem 2020. [DOI: 10.1002/ejoc.202000566] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Monther S. Zreid
- Department of Chemistry; Memorial University of Newfoundland; St. John's NL A1B 3X7 Canada
| | - Zahra A. Tabasi
- Department of Chemistry; Memorial University of Newfoundland; St. John's NL A1B 3X7 Canada
| | - Xiaoyu Ma
- Department of Organic Chemistry; College of Science; Beijing University of Chemical Technology; 100029 Beijing PR China
| | - Tao Wang
- Department of Organic Chemistry; College of Science; Beijing University of Chemical Technology; 100029 Beijing PR China
| | - Mansour H. Almatarneh
- Department of Chemistry; Memorial University of Newfoundland; St. John's NL A1B 3X7 Canada
- Department of Chemistry; University of Jordan; 11942 Amman Jordan
| | - Yuming Zhao
- Department of Chemistry; Memorial University of Newfoundland; St. John's NL A1B 3X7 Canada
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62
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Delouche T, Vacher A, Caytan E, Roisnel T, Le Guennic B, Jacquemin D, Hissler M, Bouit P. Multi‐Stage Redox Systems Based on Dicationic P‐Containing Polycyclic Aromatic Hydrocarbons. Chemistry 2020; 26:8226-8229. [DOI: 10.1002/chem.202001213] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2020] [Indexed: 11/09/2022]
Affiliation(s)
| | | | - Elsa Caytan
- CNRS, ISCR—UMR 6226Univ Rennes 35000 Rennes France
| | | | | | - Denis Jacquemin
- CEISAM UMR CNRS 6230University of Nantes 44322 Nantes France
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63
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Saha A, Ganguly B. A DFT study to probe homo-conjugated norbornylogous bridged spacers in dye-sensitized solar cells: an approach to suppressing agglomeration of dye molecules. RSC Adv 2020; 10:15307-15319. [PMID: 35495468 PMCID: PMC9052607 DOI: 10.1039/c9ra10898j] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/25/2019] [Accepted: 04/03/2020] [Indexed: 01/05/2023] Open
Abstract
This work reports a sigma-bridged framework as spacers to design new dye-sensitized solar cells. The norbornylogous bridged spacer can avoid π–π aggregation of dye molecules on the semiconductor surface in DSSCs. These sesquinorbornatrienes are known to exhibit electron propagation through the interaction of sigma and π orbitals via through bond (OITB) and through space (OITS) mechanisms. Density functional theory (DFT) calculations performed with these spacers and a modelled simple donor unit like N,N-dimethylamine and cyanoacrylic acid as the anchoring group showed significant results with the requisite optical parameters for DSSCs. The newly designed dyes have shown comparable or better optical properties compared to the reference dye molecule with π-conjugated thiophene spacer units. The ΔGinjection, VOC and μnormal values calculated for the designed dyes were found to be higher than those of the reference system. The trans-sesquinorbornatriene system spacer (6-D) showed a VOC of 3.3 eV, ΔGinjection of 2.4 eV and oscillatory strength (f) of 0.96. The total and partial density of states indicates a good communication between the valence and conduction band for the designed dyes. Transition density matrix results suggest that the exciton dissociation in the excited state is sufficiently high to overcome the coulombic attraction of the hole. These results are promising for the design of dye molecules with such scaffolds, to achieve better efficiency and to eliminate one of the major issues with π-spacer units in DSSCs. This work reports homoconjugated norbornylogous spacers to supress agglomeration of dye molecules with improved efficiency of dye sensitized solar cells.![]()
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Affiliation(s)
- Anusuya Saha
- Computation and Simulation Unit (Analytical Discipline and Centralized Instrument Facility) Industrial Research Central Salt & Marine Chemicals Research Institute (CSIR-CSMCRI) Bhavnagar Gujarat-364002 India +91-278-2567562.,Academy of Scientific and Innovative Research, Council of Scientific Research, CSIR-CSMCRI Bhavnagar Gujarat-364002 India
| | - Bishwajit Ganguly
- Computation and Simulation Unit (Analytical Discipline and Centralized Instrument Facility) Industrial Research Central Salt & Marine Chemicals Research Institute (CSIR-CSMCRI) Bhavnagar Gujarat-364002 India +91-278-2567562.,Academy of Scientific and Innovative Research, Council of Scientific Research, CSIR-CSMCRI Bhavnagar Gujarat-364002 India
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64
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Chen F, Gu W, Saeki A, Melle-Franco M, Mateo-Alonso A. A Sterically Congested Nitrogenated Benzodipentaphene with a Double π-Expanded Helicene Structure. Org Lett 2020; 22:3706-3711. [DOI: 10.1021/acs.orglett.0c01202] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Affiliation(s)
- Fengkun Chen
- POLYMAT, University of the Basque Country UPV/EHU, Avenida de Tolosa 72, 20018 Donostia-San Sebastian, Spain
| | - Wenting Gu
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, Suita, Osaka 565-0871, Japan
| | - Akinori Saeki
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, Suita, Osaka 565-0871, Japan
| | - Manuel Melle-Franco
- CICECO—Aveiro Institute of Materials. Department of Chemistry, University of Aveiro, 3810-193 Aveiro, Portugal
| | - Aurelio Mateo-Alonso
- POLYMAT, University of the Basque Country UPV/EHU, Avenida de Tolosa 72, 20018 Donostia-San Sebastian, Spain
- Ikerbasque, Basque Foundation for Science, Bilbao, Spain
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65
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Roy M, Berezhnaia V, Villa M, Vanthuyne N, Giorgi M, Naubron J, Poyer S, Monnier V, Charles L, Carissan Y, Hagebaum‐Reignier D, Rodriguez J, Gingras M, Coquerel Y. Stereoselective Syntheses, Structures, and Properties of Extremely Distorted Chiral Nanographenes Embedding Hextuple Helicenes. Angew Chem Int Ed Engl 2020; 59:3264-3271. [DOI: 10.1002/anie.201913200] [Citation(s) in RCA: 48] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2019] [Revised: 11/25/2019] [Indexed: 01/07/2023]
Affiliation(s)
- Myriam Roy
- Aix Marseille UnivCNRSCINAM Marseille France
- Sorbonne UniversitéCNRSInstitut Parisien de Chimie MoléculaireIPCM 75005 Paris France
| | | | - Marco Villa
- Aix Marseille UnivCNRSCINAM Marseille France
| | | | - Michel Giorgi
- Aix Marseille UnivCNRSCentrale Marseille, FSCM Marseille France
| | | | | | - Valérie Monnier
- Aix Marseille UnivCNRSCentrale Marseille, FSCM Marseille France
| | | | | | | | - Jean Rodriguez
- Aix Marseille UnivCNRSCentrale MarseilleiSm2 Marseille France
| | | | - Yoann Coquerel
- Aix Marseille UnivCNRSCentrale MarseilleiSm2 Marseille France
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66
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Li Y, Yagi A, Itami K. Synthesis of Highly Twisted, Nonplanar Aromatic Macrocycles Enabled by an Axially Chiral 4,5-Diphenylphenanthrene Building Block. J Am Chem Soc 2020; 142:3246-3253. [DOI: 10.1021/jacs.9b13549] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Yuanming Li
- Institute of Transformative Bio-Molecules (WPI-ITbM), Nagoya University, Chikusa, Nagoya 464-8602, Japan
| | - Akiko Yagi
- Graduate School of Science, Nagoya University, Chikusa, Nagoya 464-8602, Japan
| | - Kenichiro Itami
- Institute of Transformative Bio-Molecules (WPI-ITbM), Nagoya University, Chikusa, Nagoya 464-8602, Japan
- Graduate School of Science, Nagoya University, Chikusa, Nagoya 464-8602, Japan
- JST-ERATO, Itami Molecular Nanocarbon Project, Nagoya University, Chikusa, Nagoya 464-8602, Japan
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67
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Stereoselective Syntheses, Structures, and Properties of Extremely Distorted Chiral Nanographenes Embedding Hextuple Helicenes. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.201913200] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
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68
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Martínez MA, Greciano EE, Sánchez L. Consecutive Supramolecular Polymerization of a Rylene-Based Twistacene. Chemistry 2019; 25:16012-16016. [PMID: 31657860 DOI: 10.1002/chem.201904652] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2019] [Indexed: 01/24/2023]
Abstract
The synthesis and self-assembling features of twistacene 1 are reported. The supramolecular polymerization of 1 displays a consecutive pathway to afford slipped (AggI) and rotationally displaced (AggII) aggregates conditioned by the formation of intramolecularly H-bonded pseudocycles. In methylcyclohexane, both AggI and AggII are highly stable and the interconversion of the kinetically controlled AggI into the thermodynamically controlled AggII takes several weeks to occur. The utilization of toluene as solvent changes the energetic level for both aggregates and favors a faster conversion of AggI into AggII within a period of minutes. This conversion can be accelerated by the addition of seeds. Furthermore, concentration dependent kinetic studies demonstrate the consecutive character of the supramolecular polymerization of 1.
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Affiliation(s)
- Manuel A Martínez
- Departamento de Química Orgánica, Facultad de Ciencias Químicas, Universidad Complutense de Madrid, 28040, Madrid, Spain
| | - Elisa E Greciano
- Departamento de Química Orgánica, Facultad de Ciencias Químicas, Universidad Complutense de Madrid, 28040, Madrid, Spain
| | - Luis Sánchez
- Departamento de Química Orgánica, Facultad de Ciencias Químicas, Universidad Complutense de Madrid, 28040, Madrid, Spain
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Duwald R, Bosson J, Pascal S, Grass S, Zinna F, Besnard C, Di Bari L, Jacquemin D, Lacour J. Merging polyacenes and cationic helicenes: from weak to intense chiroptical properties in the far red region. Chem Sci 2019; 11:1165-1169. [PMID: 34084373 PMCID: PMC8145434 DOI: 10.1039/c9sc05407c] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2019] [Accepted: 12/05/2019] [Indexed: 01/05/2023] Open
Abstract
A series of helical tetracenes and pentacenes was synthesized from cationic [6] and [4]helicene precursors. These colorful acenes fluoresce in the far red region. While [4]helicene-based pentacenes exhibit chiroptical properties mainly in the UV region, [6]helicene-derived tetracenes show enhanced ECD in the visible range, in addition to clear CPL responses. This difference is rationalized using first principles.
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Affiliation(s)
- Romain Duwald
- Department of Organic Chemistry, University of Geneva Quai Ernest Ansermet 30 1211 Geneva 4 Switzerland
| | - Johann Bosson
- Department of Organic Chemistry, University of Geneva Quai Ernest Ansermet 30 1211 Geneva 4 Switzerland
| | - Simon Pascal
- Department of Organic Chemistry, University of Geneva Quai Ernest Ansermet 30 1211 Geneva 4 Switzerland
| | - Stéphane Grass
- Department of Organic Chemistry, University of Geneva Quai Ernest Ansermet 30 1211 Geneva 4 Switzerland
| | - Francesco Zinna
- Department of Organic Chemistry, University of Geneva Quai Ernest Ansermet 30 1211 Geneva 4 Switzerland
- Dipartimento di Chimica e Chimica Industriale, Università di Pisa Via Moruzzi 13 56124 Pisa Italy
| | - Céline Besnard
- Laboratoire de Cristallographie, University of Geneva Quai Ernest Ansermet 24 1211 Geneva 4 Switzerland
| | - Lorenzo Di Bari
- Dipartimento di Chimica e Chimica Industriale, Università di Pisa Via Moruzzi 13 56124 Pisa Italy
| | - Denis Jacquemin
- CEISAM, UMR CNRS 6230, Université de Nantes 2 rue de la Houssinière 44322 Nantes France
| | - Jérôme Lacour
- Department of Organic Chemistry, University of Geneva Quai Ernest Ansermet 30 1211 Geneva 4 Switzerland
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