1
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Yamada M. Perspectives on push-pull chromophores derived from click-type [2 + 2] cycloaddition-retroelectrocyclization reactions of electron-rich alkynes and electron-deficient alkenes. Beilstein J Org Chem 2024; 20:125-154. [PMID: 38292046 PMCID: PMC10825803 DOI: 10.3762/bjoc.20.13] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2023] [Accepted: 01/04/2024] [Indexed: 02/01/2024] Open
Abstract
Various push-pull chromophores can be synthesized in a single and atom-economical step through [2 + 2] cycloaddition-retroelectrocyclization (CA-RE) reactions involving diverse electron-rich alkynes and electron-deficient alkenes. In this review, a comprehensive investigation of the recent and noteworthy advancements in the research on push-pull chromophores prepared via the [2 + 2] CA-RE reaction is conducted. In particular, an overview of the physicochemical properties of the family of these compounds that have been investigated is provided to clarify their potential for future applications.
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Affiliation(s)
- Michio Yamada
- Department of Chemistry, Tokyo Gakugei University, Nukuikitamachi 4-1-1, Koganei, Tokyo 184-8501, Japan
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2
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Liu Z, Wang J, Zhou Q, Lu T, Wang X, Yan X, Zhao M, Yuan A. Size dependence of optical nonlinearity for H-capped carbon chains, H-(CC) n-H ( n = 3-15): analysis of its nature and prediction for long chains. Phys Chem Chem Phys 2023; 25:29165-29172. [PMID: 37870160 DOI: 10.1039/d3cp04150f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2023]
Abstract
Based on a computational approach that can accurately describe their geometric structures and electronic spectra, we have theoretically studied the nonlinear optical (NLO) properties of H-capped carbon chains, H-(CC)n-H (n = 3-15), for the first time. Special attention was paid to the size dependence of the molecular (hyper)polarizability of these species through the nonlinear fitting of the data, which formed two power-law formulas of αiso(∞) = -0.206 + 0.264n1.498 and γ‖(∞) = -0.624 + 0.006n3.368 and was thoroughly discussed at the electronic structure level by in-depth wavefunction analyses. The fundamental gap (ΔE) between vertical ionization energy (VIE) and vertical electron affinity (VEA) is found to be related to the molecular (hyper)polarizability. The calculated (hyper)polarizability of the carbon chains H-(CC)n-H (n = 3-15) is more sensitive to the density functional theory (DFT) applied than to the basis set selected. The results are expected to provide theoretical guidance for the property prediction of arbitrarily long carbon chains not yet synthesized.
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Affiliation(s)
- Zeyu Liu
- School of Environmental and Chemical Engineering, Jiangsu University of Science and Technology, Zhenjiang 212100, People's Republic of China.
| | - Jiaojiao Wang
- School of Environmental and Chemical Engineering, Jiangsu University of Science and Technology, Zhenjiang 212100, People's Republic of China.
| | - Qing Zhou
- School of Environmental and Chemical Engineering, Jiangsu University of Science and Technology, Zhenjiang 212100, People's Republic of China.
| | - Tian Lu
- Beijing Kein Research Center for Natural Sciences, Beijing 100022, People's Republic of China.
| | - Xia Wang
- School of Environmental and Chemical Engineering, Jiangsu University of Science and Technology, Zhenjiang 212100, People's Republic of China.
| | - Xiufen Yan
- School of Environmental and Chemical Engineering, Jiangsu University of Science and Technology, Zhenjiang 212100, People's Republic of China.
| | - Mengdi Zhao
- Department of Materials Science and Engineering, Suzhou University of Science and Technology, Suzhou 215009, People's Republic of China
| | - Aihua Yuan
- School of Environmental and Chemical Engineering, Jiangsu University of Science and Technology, Zhenjiang 212100, People's Republic of China.
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3
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Biaggio I. The appeal of small molecules for practical nonlinear optics. Chemistry 2021; 28:e202103168. [PMID: 34727380 DOI: 10.1002/chem.202103168] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2021] [Indexed: 11/08/2022]
Abstract
Small organic molecules with a π-conjugated system that consists of only a few double or triple bonds can have significantly smaller optical excitation energies when equipped with donor- and acceptor groups, which raises the quantum limits to the molecular polarizabilities. As a consequence, third-order nonlinear optical polarizabilities become orders of magnitude larger than those of molecules of similar size without donor-acceptor substitution. This enables strong third-order nonlinear optical effects (as high as 1000 times those of silica glass) in dense, amorphous monolithic assemblies. These properties, accompanied by the possibility of deposition from the vapor phase and of electric-field poling at higher temperatures, make the resulting materials competitive towards adding an active nonlinear optical or electro-optic functionality to state-of-the-art integrated photonics platforms.
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Affiliation(s)
- Ivan Biaggio
- Lehigh University, Department of Physics, 16 Memorial Drive East, PA 18015, Bethlehem, UNITED STATES
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4
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Shoji T, Yamazaki A, Ariga Y, Uda M, Ando D, Sasahara N, Kai N, Ito S. Azulene-Substituted Donor-Acceptor Polymethines and 1,6'-Bi-, 1,6';3,6''-Ter-, and Quinqueazulenes via Zincke Salts: Synthesis, and Structural, Optical, and Electrochemical Properties. Chempluschem 2021; 86:946-966. [PMID: 33973729 DOI: 10.1002/cplu.202100174] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2021] [Revised: 04/26/2021] [Indexed: 11/06/2022]
Abstract
Azulene-substituted donor-acceptor polymethines, bi-, ter-, and quinqueazulenes composed of the 1,6'-biazulene unit have been successfully prepared from corresponding Zincke salts. The synthesis of polymethines through the reaction of Zincke salts with several amines, followed by a Knoevenagel reaction with malononitrile, was accomplished in moderate to high yields (40-92 %). Meanwhile, the reaction of Zincke salts with secondary amines and the subsequent sequential condensation-cyclization with cyclopentadienide ions, so-called Ziegler-Hafner method, produced the corresponding 1,6'-biazulenes, 1,6';3,6''-terazulenes, and quinqueazulene, respectively. The structural, optical, and electrochemical properties of the azulene-substituted donor-acceptor polymethines, bi-, ter-, and quinqueazulenes were revealed by single-crystal X-ray structure analysis, UV/vis spectroscopy, voltammetry analysis, spectroelectrochemistry, and theoretical calculations. These results suggested that the substituents on the azulene ring and their substitution positions directly affect their reactivities, optical and electrochemical properties.
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Affiliation(s)
- Taku Shoji
- Department of Material Science, Graduate School of Science and Technology, Shinshu University, Matsumoto, 390-8621, Nagano, Japan
- Department of Chemistry, Faculty of Science, Shinshu University, Matsumoto, 390-8621, Nagano, Japan
| | - Akari Yamazaki
- Department of Material Science, Graduate School of Science and Technology, Shinshu University, Matsumoto, 390-8621, Nagano, Japan
| | - Yukino Ariga
- Department of Material Science, Graduate School of Science and Technology, Shinshu University, Matsumoto, 390-8621, Nagano, Japan
| | - Mayumi Uda
- Department of Material Science, Graduate School of Science and Technology, Shinshu University, Matsumoto, 390-8621, Nagano, Japan
| | - Daichi Ando
- Department of Chemistry, Faculty of Science, Shinshu University, Matsumoto, 390-8621, Nagano, Japan
| | - Nichika Sasahara
- Department of Chemistry, Faculty of Science, Shinshu University, Matsumoto, 390-8621, Nagano, Japan
| | - Naohito Kai
- Graduate School of Science and Technology, Hirosaki University, Hirosaki, 036-8561, Aomori, Japan
| | - Shunji Ito
- Graduate School of Science and Technology, Hirosaki University, Hirosaki, 036-8561, Aomori, Japan
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5
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Zhang L, Gong X, Tian C, Fu H, Tan H, Dai J, Cui M. Near-Infrared Fluorescent Probes with Rotatable Polyacetylene Chains for the Detection of Amyloid-β Plaques. J Phys Chem B 2021; 125:497-506. [PMID: 33415984 DOI: 10.1021/acs.jpcb.0c08845] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The plaques of accumulated β-amyloid (Aβ) in the parenchymal brain are accepted as an important biomarker for the early diagnosis of Alzheimer's disease (AD). Many near-infrared (NIR) probes, which were based on the D-π-A structure and bridged by conjugated double bonds, had been reported and displayed a high affinity to Aβ plaques. Considering the isomerization caused by the polyethylene chain, however, the conjugated polyacetylene chain is a better choice for developing new NIR Aβ probes. Hence, in this report, a new series of NIR probes with naphthyl or phenyl rings and different numbers of conjugated triple bonds were designed, synthesized, and evaluated as NIR probes for Aβ plaques. Upon interaction with Aβ aggregates, these probes displayed a significant increase in fluorescence intensity (45- to 360-fold) and a high to moderate affinity (6.05-56.62 nM). Among them, probe 22b displayed excellent fluorescent properties with a 183-fold increase in fluorescence intensity and an emission maximum at 650 nm after incubated with Aβ aggregates. Furthermore, 22b had a high affinity to Aβ aggregates (Kd = 12.96 nM) and could efficiently detect the Aβ plaques in brain sections from both transgenic mice and AD patients in vitro. In summary, this work may lead to a new direction in the development of novel NIR probes for the detection of Aβ plaques.
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Affiliation(s)
- Longfei Zhang
- Key Laboratory of Radiopharmaceuticals, Ministry of Education, College of Chemistry, Beijing Normal University, Beijing 100875, China
| | - Xin Gong
- Key Laboratory of Radiopharmaceuticals, Ministry of Education, College of Chemistry, Beijing Normal University, Beijing 100875, China
| | - Chuan Tian
- Key Laboratory of Radiopharmaceuticals, Ministry of Education, College of Chemistry, Beijing Normal University, Beijing 100875, China
| | - Hualong Fu
- Key Laboratory of Radiopharmaceuticals, Ministry of Education, College of Chemistry, Beijing Normal University, Beijing 100875, China
| | - Hongwei Tan
- Key Laboratory of Radiopharmaceuticals, Ministry of Education, College of Chemistry, Beijing Normal University, Beijing 100875, China
| | - Jiapei Dai
- Wuhan Institute for Neuroscience and Neuroengineering, South-Central University for Nationalities, Wuhan 430074, China
| | - Mengchao Cui
- Key Laboratory of Radiopharmaceuticals, Ministry of Education, College of Chemistry, Beijing Normal University, Beijing 100875, China
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6
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Brunel D, Dumur F. Recent advances in organic dyes and fluorophores comprising a 1,2,3-triazole moiety. NEW J CHEM 2020. [DOI: 10.1039/c9nj06330g] [Citation(s) in RCA: 35] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Since the discovery of the copper catalyzed azide alkyne cycloaddition in the early 2000s, tremendous efforts have been devoted to enlarging the scope of applications of this relatively simple to handle reaction.
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7
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Abstract
sp-Hybridized carbon atomic wires are appealing systems with large property tunability. In particular, their electronic properties are intimately related to length, structure, and type of functional end-groups as well as to other effects such as the intermolecular charge transfer with metal nanoparticles. Here, by a combined Raman, Surface Enhanced Raman Scattering (SERS) investigation and first principles calculations of different N,N-dimethylanilino-terminated polyynes, we suggest that, upon charge transfer interaction with silver nanoparticles, the function of sp-carbon atomic wire can change from electron donor to electron acceptor by increasing the wire length. In addition, the insertion into the wire of a strong electrophilic group (1,1,4,4-tetracyanobuta-1,3-diene-2,3-diyl) changes the electron-accepting molecular regions involved in this intermolecular charge transfer. Our results indicate that carbon atomic wires could display a tunable charge transfer between the sp-wire and the metal, and hold promise as active materials in organic optoelectronics and photovoltaics.
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8
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Haque A, Al-Balushi RA, Al-Busaidi IJ, Khan MS, Raithby PR. Rise of Conjugated Poly-ynes and Poly(Metalla-ynes): From Design Through Synthesis to Structure-Property Relationships and Applications. Chem Rev 2018; 118:8474-8597. [PMID: 30112905 DOI: 10.1021/acs.chemrev.8b00022] [Citation(s) in RCA: 109] [Impact Index Per Article: 18.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
Conjugated poly-ynes and poly(metalla-ynes) constitute an important class of new materials with potential application in various domains of science. The key factors responsible for the diverse usage of these materials is their intriguing and tunable chemical and photophysical properties. This review highlights fascinating advances made in the field of conjugated organic poly-ynes and poly(metalla-ynes) incorporating group 4-11 metals. This includes several important aspects of conjugated poly-ynes viz. synthetic protocols, bonding, electronic structure, nature of luminescence, structure-property relationships, diverse applications, and concluding remarks. Furthermore, we delineated the future directions and challenges in this particular area of research.
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Affiliation(s)
- Ashanul Haque
- Department of Chemistry , Sultan Qaboos University , P.O. Box 36, Al-Khod 123 , Sultanate of Oman
| | - Rayya A Al-Balushi
- Department of Chemistry , Sultan Qaboos University , P.O. Box 36, Al-Khod 123 , Sultanate of Oman
| | - Idris Juma Al-Busaidi
- Department of Chemistry , Sultan Qaboos University , P.O. Box 36, Al-Khod 123 , Sultanate of Oman
| | - Muhammad S Khan
- Department of Chemistry , Sultan Qaboos University , P.O. Box 36, Al-Khod 123 , Sultanate of Oman
| | - Paul R Raithby
- Department of Chemistry , University of Bath , Claverton Down , Bath BA2 7AY , U.K
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9
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Neugebauer TS, Franz M, Frankenberger S, Tykwinski RR, Drewello T. Laser desorption vs. electrospray of polyyne-threaded rotaxanes: Preventing covalent cross-linking and promoting noncovalent aggregation. J Chem Phys 2018; 148:064308. [PMID: 29448797 DOI: 10.1063/1.5013123] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Abstract
Laser-induced cross-linking of polyynes is successfully hindered when the polyyne is encapsulated as part of a rotaxane and therefore protected by a surrounding macrocycle. When the rotaxane is electrosprayed, however, noncovalent aggregate ions are efficiently formed. Aggregates of considerable size (including more than 50 rotaxane molecules with masses beyond 100k Da) and charge states (up to 13 charges and beyond) have been observed. Either protons or sodium cations act as the charge carriers. These aggregates are not formed when the individual components of the rotaxane, i.e., the macrocycle or the polyyne, are separately electrosprayed. This underlines the structural importance of the rotaxane for the aggregate formation. Straightforward force field calculations indicate that the polyyne thread hinders the folding of the macrocycles, which facilitates the bonding interaction between the two components.
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Affiliation(s)
- Thomas S Neugebauer
- Physical Chemistry I, Department of Chemistry and Pharmacy, University of Erlangen-Nuremberg, Egerlandstrasse 3, 91058 Erlangen, Germany
| | - Michael Franz
- Organic Chemistry I, Department of Chemistry and Pharmacy, University of Erlangen-Nuremberg, Henkestraße 42, 91054 Erlangen, Germany
| | - Stephanie Frankenberger
- Organic Chemistry I, Department of Chemistry and Pharmacy, University of Erlangen-Nuremberg, Henkestraße 42, 91054 Erlangen, Germany
| | - Rik R Tykwinski
- Organic Chemistry I, Department of Chemistry and Pharmacy, University of Erlangen-Nuremberg, Henkestraße 42, 91054 Erlangen, Germany
| | - Thomas Drewello
- Physical Chemistry I, Department of Chemistry and Pharmacy, University of Erlangen-Nuremberg, Egerlandstrasse 3, 91058 Erlangen, Germany
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10
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Tailoring the spacer type and length in push–pull chromophores. Insights from a systematic theoretical study. Chem Phys Lett 2016. [DOI: 10.1016/j.cplett.2016.04.072] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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11
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Huo P, Li YH, Xue LJ, Chen T, Yu L, Zhu QY, Dai J. Effect of conjugated structures of bipyridinium cations on ion assembly and charge-transfer of their tetrathiafulvalene-bicarboxylate salts. CrystEngComm 2016. [DOI: 10.1039/c6ce00180g] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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12
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Remya K, Suresh CH. Intermolecular carbon-carbon, nitrogen-nitrogen and oxygen-oxygen non-covalent bonding in dipolar molecules. Phys Chem Chem Phys 2015; 17:18380-92. [PMID: 26103886 DOI: 10.1039/c5cp01631b] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
Clear evidence for the existence of intermolecular carbon-carbon (C···C), nitrogen-nitrogen (N···N) and oxygen-oxygen (O···O) interactions between atoms in similar chemical environments in homogeneous dimers of organic dipolar molecules has been obtained from molecular orbital (MO), natural bond orbital (NBO) and atoms-in-molecule (AIM) electron density analyses at the M06L/6-311++G(d,p) level of density functional theory (DFT). These X···X type interactions are mainly the result of local polarization effects, causing segregation of electron-rich and electron-deficient regions in the X atoms, leading to complementary electrostatic interactions. NBO analysis provides evidence of charge transfer between the two X atoms. Even in symmetrical molecules such as acetylene, induced dipoles in the dimer create C···C bonding interactions. The strength of this type of interaction increases with increase in the dipole moment of the molecule. Energy decomposition analysis (EDA) shows that the electrostatic component of the interaction energy (Eint) is very high, up to 95.86%. The C···C interactions between similar carbon atoms are located for several crystal structures obtained from the literature. In addition, MO, AIM and electrostatic potential analyses support interactions between similar oxygen (O···O) and nitrogen (N···N) atoms in a variety of molecular dimers. Good prediction of Eint is achieved in terms of the total gain in electron density at non-covalently interacting intermolecular bonds (∑ρ) and the monomer dipole moment (μ). A rigorously tested QSAR equation has been derived to predict Eint for all dimer systems: Eint (kcal mol(-1)) = -138.395∑ρ(au) - 0.551μ (Debye). This equation suggests that the polarization-induced bonding interaction between atoms in a similar chemical environment could well be a general chemical phenomenon. The results have been further validated by different density functional methods and also by G3MP2 method.
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Affiliation(s)
- Karunakaran Remya
- Inorganic and Theoretical Chemistry Section, CSTD, CSIR-National Institute for Interdisciplinary Science and Technology, Trivandrum 695 019, India.
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13
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Kato SI, Yamada Y, Hiyoshi H, Umezu K, Nakamura Y. Series of Carbazole-Pyrimidine Conjugates: Syntheses and Electronic, Photophysical, and Electrochemical Properties. J Org Chem 2015; 80:9076-90. [PMID: 26301629 DOI: 10.1021/acs.joc.5b01409] [Citation(s) in RCA: 63] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A series of carbazole-pyrimidine conjugates 1-17 were synthesized by Pd-catalyzed cross-coupling, oxidation, and nucleophilic aromatic substitution reactions. In 1-17, the carbazole moieties are connected at the 4,6-positions of the pyrimidine ring either directly or via ethynylene or vinylene spacers, and various electron-donating or electron-withdrawing substituents are introduced at the 2-position of the pyrimidine ring. The effects of structural variations on the electronic, photophysical, and electrochemical properties of 1-17 were comprehensively investigated. Compounds 1-17 exhibit intramolecular charge-transfer (ICT) states, which essentially lead to moderate-to-strong fluorescence emission with large Stokes shifts depending on the solvent polarity. These compounds tend to show significant changes in optical and fluorescence properties upon addition of trifluoroacetic acid. The electron-accepting ability of these compounds can be tuned by both substituents on the pyrimidine moiety and spacers. The ethynylene spacer lowers both the HOMO and LUMO levels, while the vinylene spacer elevates the HOMO level and lowers the LUMO level. The X-ray crystal structures of 3, 6, 11, and 14 are also disclosed.
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Affiliation(s)
- Shin-ichiro Kato
- Division of Molecular Science, Faculty of Science and Technology, Gunma University , 1-5-1 Tenjin-cho, Kiryu, Gunma 376-8515, Japan
| | - Yuji Yamada
- Division of Molecular Science, Faculty of Science and Technology, Gunma University , 1-5-1 Tenjin-cho, Kiryu, Gunma 376-8515, Japan
| | - Hidetaka Hiyoshi
- Ihara Chemical Industry Co., Ltd. , Taito-ku, Tokyo 110-0008, Japan
| | - Kazuto Umezu
- Ihara Chemical Industry Co., Ltd. , Taito-ku, Tokyo 110-0008, Japan
| | - Yosuke Nakamura
- Division of Molecular Science, Faculty of Science and Technology, Gunma University , 1-5-1 Tenjin-cho, Kiryu, Gunma 376-8515, Japan
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14
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Arendt A, Kołkowski R, Samoc M, Szafert S. Spectral dependence of nonlinear optical properties of symmetrical octatetraynes with p-substituted phenyl end-groups. Phys Chem Chem Phys 2015; 17:13680-8. [DOI: 10.1039/c5cp01661d] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Organic compounds containing conjugated carbon chains have been extensively investigated due to their interesting properties including nonlinear optical response.
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Affiliation(s)
- Agata Arendt
- Faculty of Chemistry
- University of Wroclaw
- Wroclaw 50-383
- Poland
| | - Radosław Kołkowski
- Advanced Materials Engineering and Modelling Group
- Faculty of Chemistry
- Wroclaw University of Technology
- 50-370 Wroclaw
- Poland
| | - Marek Samoc
- Advanced Materials Engineering and Modelling Group
- Faculty of Chemistry
- Wroclaw University of Technology
- 50-370 Wroclaw
- Poland
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15
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Christensen MA, Della Pia EA, Houmøller J, Thomsen S, Wanko M, Bond AD, Rubio A, Brøndsted Nielsen S, Brøndsted Nielsen M. Cross-Conjugation vs. Linear Conjugation in Donor-Bridge-Acceptor Nitrophenol Chromophores. European J Org Chem 2014. [DOI: 10.1002/ejoc.201301642] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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16
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Štefko M, Tzirakis MD, Breiten B, Ebert MO, Dumele O, Schweizer WB, Gisselbrecht JP, Boudon C, Beels MT, Biaggio I, Diederich F. Donor-Acceptor (D-A)-Substituted Polyyne Chromophores: Modulation of Their Optoelectronic Properties by Varying the Length of the Acetylene Spacer. Chemistry 2013; 19:12693-704. [DOI: 10.1002/chem.201301642] [Citation(s) in RCA: 57] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2013] [Indexed: 11/11/2022]
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17
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Januszewski JA, Wendinger D, Methfessel CD, Hampel F, Tykwinski RR. Synthesis and Structure of Tetraarylcumulenes: Characterization of Bond-Length Alternation versus Molecule Length. Angew Chem Int Ed Engl 2013; 52:1817-21. [DOI: 10.1002/anie.201208058] [Citation(s) in RCA: 73] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2012] [Indexed: 11/11/2022]
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18
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Januszewski JA, Wendinger D, Methfessel CD, Hampel F, Tykwinski RR. Synthese und Struktur von Tetraarylcumulenen: Charakterisierung der Bindungslängenalternanz in Abhängigkeit der Moleküllänge. Angew Chem Int Ed Engl 2013. [DOI: 10.1002/ange.201208058] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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19
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Lacy AR, Vogt A, Boudon C, Gisselbrecht JP, Schweizer WB, Diederich F. Post-Cycloaddition-Retroelectrocyclization Transformations of Polycyanobutadienes. European J Org Chem 2012. [DOI: 10.1002/ejoc.201201371] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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20
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Pop F, Socaci C, Terec A, Condamine E, Varga RA, Raţ CI, Roncali J, Grosu I. Cryptands and bismacrocycles with cyanuric and isocyanuric units: synthesis and structural investigations. Tetrahedron 2012. [DOI: 10.1016/j.tet.2012.07.100] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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21
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Wang J, Mei J, Zhao E, Song Z, Qin A, Sun JZ, Tang BZ. Ethynyl-Capped Hyperbranched Conjugated Polytriazole: Click Polymerization, Clickable Modification, and Aggregation-Enhanced Emission. Macromolecules 2012. [DOI: 10.1021/ma3017037] [Citation(s) in RCA: 83] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Jian Wang
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization,
Department of Polymer Science and Engineering, Zhejiang University, Hangzhou 310027, China
| | - Ju Mei
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization,
Department of Polymer Science and Engineering, Zhejiang University, Hangzhou 310027, China
| | - Engui Zhao
- Department of Chemistry, Institute for Advanced Study, Institute of Molecular Functional Materials, State Key Laboratory of Molecular Neuroscience, and Division of Biomedical Engineering, The Hong Kong University of Science & Technology, Clear Water Bay, Kowloon, Hong Kong, China
| | - Zhegang Song
- Department of Chemistry, Institute for Advanced Study, Institute of Molecular Functional Materials, State Key Laboratory of Molecular Neuroscience, and Division of Biomedical Engineering, The Hong Kong University of Science & Technology, Clear Water Bay, Kowloon, Hong Kong, China
| | - Anjun Qin
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization,
Department of Polymer Science and Engineering, Zhejiang University, Hangzhou 310027, China
| | - Jing Zhi Sun
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization,
Department of Polymer Science and Engineering, Zhejiang University, Hangzhou 310027, China
| | - Ben Zhong Tang
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization,
Department of Polymer Science and Engineering, Zhejiang University, Hangzhou 310027, China
- Department of Chemistry, Institute for Advanced Study, Institute of Molecular Functional Materials, State Key Laboratory of Molecular Neuroscience, and Division of Biomedical Engineering, The Hong Kong University of Science & Technology, Clear Water Bay, Kowloon, Hong Kong, China
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Breiten B, Jordan M, Taura D, Zalibera M, Griesser M, Confortin D, Boudon C, Gisselbrecht JP, Schweizer WB, Gescheidt G, Diederich F. Donor-Substituted Octacyano[4]dendralenes: Investigation of π-Electron Delocalization in Their Radical Ions. J Org Chem 2012; 78:1760-7. [DOI: 10.1021/jo301194y] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Benjamin Breiten
- Laboratory of Organic Chemistry, ETH Zurich, Hönggerberg, HCI, CH-8093 Zurich, Switzerland
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Shigeta M, Watanabe J, Konishi GI. Preparation of Arylbutadiyne Derivatives by Silyl Migration Inspired by the Mukaiyama Protocol. ASIAN J ORG CHEM 2012. [DOI: 10.1002/ajoc.201200018] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Tancini F, Wu YL, Schweizer WB, Gisselbrecht JP, Boudon C, Jarowski PD, Beels MT, Biaggio I, Diederich F. 1,1-Dicyano-4-[4-(diethylamino)phenyl]buta-1,3-dienes: Structure-Property Relationships. European J Org Chem 2012. [DOI: 10.1002/ejoc.201200111] [Citation(s) in RCA: 163] [Impact Index Per Article: 13.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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