1
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Freytag E, Kreimendahl L, Holzapfel M, Petersen J, Lackinger H, Stolte M, Würthner F, Mitric R, Lambert C. Chiroptical Properties of Planar Benzobisthiazole-Bridged Squaraine Dimers. J Org Chem 2023. [PMID: 37487529 DOI: 10.1021/acs.joc.3c00821] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/26/2023]
Abstract
Five chiral squaraine dimers were synthesized by fusing chiral indolenine semisquaraines with three different benzobisthiazole bridges. The thereby created squaraine dimers show a strong splitting of the lowest energy absorption bands caused by exciton coupling. The intensities of the two exciton transitions and the energetic splitting depend on the angle of the two squaraine moieties within the chromophore dimer. The electric circular dichroism spectra of the dimers show intense Cotton effects whose sign depends on the used squaraine chromophores. Sizable anisotropies gabs of up to 2.6 × 10-3 could be obtained. TD-DFT calculations were used to partition the rotational strength into the three Rosenfeld terms where the electric-magnetic coupling turned out to be the dominant contribution while the exciton chirality term is much smaller. This is because the chromophore dimers are essentially planar but the angle between the electric transition dipole moment of one squaraine and the magnetic transition dipole moment of the other squaraine strongly deviates from 90°, which makes the dot product between the two moment vectors and, thus, the rotational strength substantial.
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Affiliation(s)
- Emely Freytag
- Institut für Organische Chemie, Universität Würzburg, Am Hubland, 97074 Würzburg, Germany
| | - Lasse Kreimendahl
- Institut für Physikalische und Theoretische Chemie, Universität Würzburg, Am Hubland, 97074 Würzburg, Germany
| | - Marco Holzapfel
- Institut für Organische Chemie, Universität Würzburg, Am Hubland, 97074 Würzburg, Germany
| | - Jens Petersen
- Institut für Physikalische und Theoretische Chemie, Universität Würzburg, Am Hubland, 97074 Würzburg, Germany
| | - Heiko Lackinger
- Institut für Organische Chemie, Universität Würzburg, Am Hubland, 97074 Würzburg, Germany
| | - Matthias Stolte
- Institut für Organische Chemie, Universität Würzburg, Am Hubland, 97074 Würzburg, Germany
- Center for Nanosystems Chemistry, Universität Würzburg, Am Hubland, 97074 Würzburg, Germany
| | - Frank Würthner
- Institut für Organische Chemie, Universität Würzburg, Am Hubland, 97074 Würzburg, Germany
- Center for Nanosystems Chemistry, Universität Würzburg, Am Hubland, 97074 Würzburg, Germany
| | - Roland Mitric
- Institut für Physikalische und Theoretische Chemie, Universität Würzburg, Am Hubland, 97074 Würzburg, Germany
| | - Christoph Lambert
- Institut für Organische Chemie, Universität Würzburg, Am Hubland, 97074 Würzburg, Germany
- Center for Nanosystems Chemistry, Universität Würzburg, Am Hubland, 97074 Würzburg, Germany
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2
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Singh AK, Kavungathodi MFM, Mozer AJ, Krishnamoorthy K, Nithyanandhan J. Solvent-Dependent Functional Aggregates of Unsymmetrical Squaraine Dyes on TiO 2 Surface for Dye-Sensitized Solar Cells. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2022; 38:14808-14818. [PMID: 36417560 DOI: 10.1021/acs.langmuir.2c02469] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
Alkyl group wrapped donor-acceptor-donor (D-A-D) based unsymmetrical squaraine dyes SQ1, SQ5, and SQS4 were used to evaluate the effect of sensitizing solvents on dye-sensitized solar cell (DSSC) efficiency. A drastic change in DSSC efficiency was observed when the photo-anodes were sensitized in acetonitrile (bad solvent when considering dye solubility) and chloroform (good solvent) with an Iodolyte (I-/I3-) electrolyte. The DSSC device sensitized with squaraine dyes in acetonitrile showed better photovoltaic performance with enhanced photocurrent generation and photovoltage compared to the device sensitized in chloroform. In a good sensitizing solvent, dyes with long hydrophobic alkyl chains are deleterious forming aggregates on the TiO2 surface, which results in an incident photon-to-current conversion efficiency (IPCE) response mostly from monomeric and dimeric structures. Meanwhile, a bad sensitizing solvent facilitates the formation of well-packed self-assembled structures on the TiO2 surface, which are responsible for a broad IPCE response and high device efficiencies. The photoanode sensitized in the bad sensitizing solvent showed enhanced VOC values of 642, 675, and 699 mV; JSC values of 6.38, 11.1, and 11.69 mA/cm2; and DSSC device efficiencies of 3.0, 5.63, and 6.13% for the SQ1, SQ5, and SQS4 dyes in the absence of a coadsorbent (chenodeoxycholic acid (CDCA)), respectively, which were further enhanced by CDCA addition. Meanwhile, the photoanode sensitized in the good sensitizing solvent showed relatively low photovoltaic VOC values of 640, 652, and 650 mV; JSC values of 5.78, 6.79, and 6.24 mA/cm2; and device efficiencies of 2.73, 3.35, and 3.20% for SQ1, SQ5, and SQS4 in the absence of CDCA, respectively, which were further varied with equivalents of CDCA. The best DSSC device efficiencies of 6.13 and 3.20% were obtained for SQS4 without CDCA, where the dye was sensitized in acetonitrile (bad) and chloroform (good) sensitizing solvents, respectively.
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Affiliation(s)
- Ambarish Kumar Singh
- Physical and Materials Chemistry Division, CSIR-National Chemical Laboratory and CSIR-Network of Institutes for Solar Energy, Dr. Homi Bhabha Road, Pune 411008, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Munavvar Fairoos Mele Kavungathodi
- ARC Centre of Excellence for Electromaterials Science, Intelligent Polymer Research Institute, Australian Institute for Innovative Materials, University of Wollongong, Wollongong, New South Wales 2522, Australia
| | - Attila J Mozer
- ARC Centre of Excellence for Electromaterials Science, Intelligent Polymer Research Institute, Australian Institute for Innovative Materials, University of Wollongong, Wollongong, New South Wales 2522, Australia
| | - Kothandam Krishnamoorthy
- Polymer Science and Engineering Division, CSIR-National Chemical Laboratory and CSIR-Network of Institutes for Solar Energy, Dr. Homi Bhabha Road, Pune 411008, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Jayaraj Nithyanandhan
- Physical and Materials Chemistry Division, CSIR-National Chemical Laboratory and CSIR-Network of Institutes for Solar Energy, Dr. Homi Bhabha Road, Pune 411008, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
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3
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Freytag E, Holzapfel M, Swain A, Bringmann G, Stolte M, Würthner F, Lambert C. Axially chiral indolenine derived chromophore dimers and their chiroptical absorption and emission properties. Chem Sci 2022; 13:12229-12238. [PMID: 36349102 PMCID: PMC9601394 DOI: 10.1039/d2sc04600h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2022] [Accepted: 10/05/2022] [Indexed: 11/23/2022] Open
Abstract
Yamamoto homocoupling of two chiral oxindoles led to the atropo-diastereoselective formation of an axially chiral oxindole dimer. This building block served as the starting material for the syntheses of axially chiral squaraine and merocyanine chromophore dimers. These dimers show pronounced chiroptical properties, this is, outstandingly high ECD signals (Δε up to ca. 1500 M−1 cm−1) as a couplet with positive Cotton effect for the P-configuration around the biaryl axis and a negative Cotton effect for the M-configuration. All investigated dimers also exhibit pronounced circularly polarised emission with anisotropy values of ca. 10−3 cgs. Time-dependent density functional calculations were used to analyse the three contributions (local one electron, electric–magnetic coupling, and exciton coupling) to the rotational strength applying the Rosenfeld equation to excitonically coupled chromophores. While the exciton coupling term proves to be the dominant one, the electric–magnetic coupling possesses the same sign and adds significantly to the total rotational strength owing to a favourable geometric arrangement of the two chromophores within the dimer. From an axially chiral oxindole, squaraine and merocyanine chromophore dimers with pronounced chiroptical properties were prepared.![]()
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Affiliation(s)
- Emely Freytag
- Institut für Organische Chemie, Universität Würzburg, Am Hubland, Würzburg 97074, Germany
| | - Marco Holzapfel
- Institut für Organische Chemie, Universität Würzburg, Am Hubland, Würzburg 97074, Germany
| | - Asim Swain
- Institut für Organische Chemie, Universität Würzburg, Am Hubland, Würzburg 97074, Germany
| | - Gerhard Bringmann
- Institut für Organische Chemie, Universität Würzburg, Am Hubland, Würzburg 97074, Germany
| | - Matthias Stolte
- Institut für Organische Chemie, Universität Würzburg, Am Hubland, Würzburg 97074, Germany
- Center for Nanosystems Chemistry, Universität Würzburg, Theodor-Boveri-Weg, Würzburg 97074, Germany
| | - Frank Würthner
- Institut für Organische Chemie, Universität Würzburg, Am Hubland, Würzburg 97074, Germany
- Center for Nanosystems Chemistry, Universität Würzburg, Theodor-Boveri-Weg, Würzburg 97074, Germany
| | - Christoph Lambert
- Institut für Organische Chemie, Universität Würzburg, Am Hubland, Würzburg 97074, Germany
- Center for Nanosystems Chemistry, Universität Würzburg, Theodor-Boveri-Weg, Würzburg 97074, Germany
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4
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Gunturu KC, Schulzke C. A computational probe granting insight into intra and inter-stacking interactions in squaraine dye derivatives. Phys Chem Chem Phys 2021; 23:22404-22417. [PMID: 34278409 DOI: 10.1039/d1cp01387d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
In order to decipher structure function relationships regarding the optoelectronic properties of organic functional materials, two sets of anilinosquaraine dye derivatives were analysed computationally. 2,4-Bis[4-(N,N-diisobutylamino)-2,6-dihydroxyphenyl]squaraine exhibits orthorhombic and monoclinic polymorphs (motif-1 and motif-2) in bulk and spin coated films, respectively, and concomitant J- and H-aggregate spectral features. In the second set, in spite of variation in the n-alkyl chain of the anilinosquaraine derivatives (n-propyl vs. n-butyl; motif-3 and motif-4), both acquired triclinic morphology and intermolecular charge transfer had been identified as the origin of their panchromaticity. The differences between these motifs were closely inspected at the theoretical level including geometrical parameters, internal reorganization energies, charge transfer integrals, drift mobilities, interaction energies and lattice energies along with a comprehensive Hirshfeld surface analysis. A correlation was established between C⋯C type intra-stack interactions with the observed red-shifted absorption patterns in the order motif-1 > motif-3 > motif-4. Hydrophobic interactions, π-π interactions and hydrogen bonds were found to influence the crystal packing patterns and concomitantly the overall molecule planarity and thereby the extent of π-bond delocalization/resonance. Insights into intra-stack and inter-stack interactions based on crystal packing effects are provided, which support and potentially guide the experimentalists' key ideas for shaping and encompassing the applications of promising squaraine derivative materials.
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Affiliation(s)
| | - Carola Schulzke
- Institute of Biochemistry, University of Greifswald, 17489 Greifswald, Germany
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5
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Kubota Y, Nakazawa M, Lee J, Naoi R, Tachikawa M, Inuzuka T, Funabiki K, Matsui M, Kim T. Synthesis of near-infrared absorbing and fluorescent bis(pyrrol-2-yl)squaraines and their halochromic properties. Org Chem Front 2021. [DOI: 10.1039/d1qo01169c] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
1,2-Squaraines (partially conjugated neutral structure) showed blue-shifted λmax compared to the corresponding 1,3-squaraines (fully conjugated zwitterionic structure) and the mono-protonated thiophene-fused 1,3-squaraine showed λmax at 1007 nm.
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Affiliation(s)
- Yasuhiro Kubota
- Department of Chemistry and Biomolecular Science, Faculty of Engineering, Gifu University, 1-1 Yanagido, Gifu, 501-1193, Japan
| | - Masato Nakazawa
- Department of Chemistry and Biomolecular Science, Faculty of Engineering, Gifu University, 1-1 Yanagido, Gifu, 501-1193, Japan
| | - Junheon Lee
- Department of Textile System Engineering, College of Engineering, Kyungpook National University, 80 Daehakro Buk-gu Daegu, 41566, Korea
| | - Ryoma Naoi
- Department of Chemistry and Biomolecular Science, Faculty of Engineering, Gifu University, 1-1 Yanagido, Gifu, 501-1193, Japan
| | - Motoki Tachikawa
- Department of Chemistry and Biomolecular Science, Faculty of Engineering, Gifu University, 1-1 Yanagido, Gifu, 501-1193, Japan
| | - Toshiyasu Inuzuka
- Life Science Research Center, Gifu University, 1-1 Yanagido, Gifu 501-1193, Japan
| | - Kazumasa Funabiki
- Department of Chemistry and Biomolecular Science, Faculty of Engineering, Gifu University, 1-1 Yanagido, Gifu, 501-1193, Japan
| | - Masaki Matsui
- Department of Chemistry and Biomolecular Science, Faculty of Engineering, Gifu University, 1-1 Yanagido, Gifu, 501-1193, Japan
| | - Taekyeong Kim
- Department of Textile System Engineering, College of Engineering, Kyungpook National University, 80 Daehakro Buk-gu Daegu, 41566, Korea
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6
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Selby J, Holzapfel M, Lombe BK, Schmidt D, Krause AM, Würthner F, Bringmann G, Lambert C. Chiroptical Properties of Indolenine Squaraines with a Stereogenic Center at Close Proximity. J Org Chem 2020; 85:12227-12242. [DOI: 10.1021/acs.joc.0c01422] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Affiliation(s)
- Joshua Selby
- Institut für Organische Chemie, Universität Würzburg, Am Hubland, 97074 Würzburg, Germany
| | - Marco Holzapfel
- Institut für Organische Chemie, Universität Würzburg, Am Hubland, 97074 Würzburg, Germany
| | - Blaise Kimbadi Lombe
- Institut für Organische Chemie, Universität Würzburg, Am Hubland, 97074 Würzburg, Germany
| | - David Schmidt
- Institut für Organische Chemie, Universität Würzburg, Am Hubland, 97074 Würzburg, Germany
- Center for Nanosystems Chemistry (CNC), Universität Würzburg, Theodor-Boveri-Weg 9, 97074 Würzburg, Germany
| | - Ana-Maria Krause
- Institut für Organische Chemie, Universität Würzburg, Am Hubland, 97074 Würzburg, Germany
- Center for Nanosystems Chemistry (CNC), Universität Würzburg, Theodor-Boveri-Weg 9, 97074 Würzburg, Germany
| | - Frank Würthner
- Institut für Organische Chemie, Universität Würzburg, Am Hubland, 97074 Würzburg, Germany
- Center for Nanosystems Chemistry (CNC), Universität Würzburg, Theodor-Boveri-Weg 9, 97074 Würzburg, Germany
| | - Gerhard Bringmann
- Institut für Organische Chemie, Universität Würzburg, Am Hubland, 97074 Würzburg, Germany
| | - Christoph Lambert
- Institut für Organische Chemie, Universität Würzburg, Am Hubland, 97074 Würzburg, Germany
- Center for Nanosystems Chemistry (CNC), Universität Würzburg, Theodor-Boveri-Weg 9, 97074 Würzburg, Germany
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7
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Bisht R, Mele Kavungathodi MF, Nithyanandhan J. Indenoquinaldine-Based Unsymmetrical Squaraine Dyes for Near-Infrared Absorption: Investigating the Steric and Electronic Effects in Dye-Sensitized Solar Cells. Chemistry 2018; 24:16368-16378. [PMID: 30144179 DOI: 10.1002/chem.201803062] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2018] [Indexed: 12/26/2022]
Abstract
A series of near-infrared (NIR)-responsive unsymmetrical squaraine dyes (ISQ1-3) incorporating a fused indenoquinaldine-based donor have been designed and synthesized. C12 alkyl chains were incorporated at the sp3 -hybridized carbon center of the indene unit of the indenoquinaldine in an out-of-plane orientation to control dye aggregation on the surface of titanium dioxide, and indole (ISQ1), benzo[e]indole (ISQ2), and quinoline (ISQ3) moieties were included as the donor component bearing the anchoring carboxy group to extend the absorption in the NIR region and to systematically study the effect of the electronic modification on the performance of dye-sensitized solar cells (DSSC). All the dyes exhibit intense absorption (ϵ≥105 m-1 cm-1 ) in the NIR region, and the dye-adsorbed TiO2 films exhibit broad panchromatic absorption. The incident photon-to-current efficiency (IPCE) spectrum of the ISQ3-based DSSC device displays a panchromatic IPCE response up to 880 nm. Additionally, the ISQ3-sensitized device provides the best efficiency of 4.15 % with a short circuit current density (JSC ) of 10.02 mA cm-2 , open-circuit voltage (VOC ) of 0.58 V, and fill factor (ff) of 72 % in the presence of 10 equivalents of 3α,7α-dihydroxy-5β-cholanic acid (CDCA). Electrochemical impedance spectroscopy analysis showed attenuated charge recombination in the ISQ3-sensitized DSSC, which contributes to its higher value of VOC compared with the other dyes.
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Affiliation(s)
- Rajesh Bisht
- Physical and Materials Chemistry Division, CSIR-National Chemical Laboratory, Dr. Homi Bhaba Road, Pune, 411008, India.,Academy of Scientific and Innovative Research (AcSIR), New Delhi, 110025, India
| | | | - Jayaraj Nithyanandhan
- Physical and Materials Chemistry Division, CSIR-National Chemical Laboratory, Dr. Homi Bhaba Road, Pune, 411008, India.,Academy of Scientific and Innovative Research (AcSIR), New Delhi, 110025, India
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8
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Yu S, Sun R, Chen T, Jin LY. Supramolecular helical nanostructures from self-assembly of coil-rod-coil amphiphilic molecules incorporating the dianthranide unit. SOFT MATTER 2018; 14:6822-6827. [PMID: 30043028 DOI: 10.1039/c8sm01217b] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Coil-rod-coil amphipathic oligomers composed of a rigid dianthranide unit and a hydrophilic branched oligoether as the coil segment were synthesized. These amphiphilic molecules self-assemble into clew-like aggregates composed of fibres or helical nanofibers in aqueous solution. Subsequently, supramolecular polymers were produced from the above objects through charge-transfer interactions by adding 2,3,5,6-tetrafluoro-7,7,8,8-tetracyanoquinodimethane (4F-TCNQ). Interestingly, temperature-sensitive supramolecular chirality was induced by lateral methyl units located at the interface of the rigid and flexible segments. However, upon addition of the electron-acceptor molecule, 4F-TCNQ, strong donor-acceptor interactions restrict any change in supramolecular chirality with temperature.
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Affiliation(s)
- Shengsheng Yu
- Key Laboratory for Organism Resources of the Changbai Mountain and Functional Molecules, and Department of Chemistry, College of Science, Yanbian University, No. 977 Gongyuan Road, Yanji 133002, People's Republic of China.
| | - Rui Sun
- Key Laboratory for Organism Resources of the Changbai Mountain and Functional Molecules, and Department of Chemistry, College of Science, Yanbian University, No. 977 Gongyuan Road, Yanji 133002, People's Republic of China.
| | - Tie Chen
- Key Laboratory for Organism Resources of the Changbai Mountain and Functional Molecules, and Department of Chemistry, College of Science, Yanbian University, No. 977 Gongyuan Road, Yanji 133002, People's Republic of China.
| | - Long Yi Jin
- Key Laboratory for Organism Resources of the Changbai Mountain and Functional Molecules, and Department of Chemistry, College of Science, Yanbian University, No. 977 Gongyuan Road, Yanji 133002, People's Republic of China.
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9
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Yu S, Yang Y, Chen T, Xu J, Jin LY. Donor-acceptor interaction-driven self-assembly of amphiphilic rod-coil molecules into supramolecular nanoassemblies. NANOSCALE 2017; 9:17975-17982. [PMID: 29130091 DOI: 10.1039/c7nr05329k] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Rigid-flexible amphiphilic molecules consisting of an aromatic segment based on pyrene and biphenyl units and hydrophilic polyethylene oxide chains self-assemble into lamellar, hexagonal columnar, and two-dimensional columnar nanostructures in the bulk state. In aqueous solution, these molecules self-assemble into nanofibers, spherical micelles, and multilayer nanotubes, depending on the chain or rod length of the molecules. Notably, ordered nanostructures of supramolecular polymers, such as single-layer curving fragments, nanofibers, and nanosheets, were constructed through charge-transfer interactions between the nanoobjects and an electron-acceptor molecule, 2,4,5,7-tetranitrofluorenone. These experimental results reveal that diverse supramolecular morphologies can be controlled by tuning rod-coil molecular interactions or charge-transfer interactions between the donor and acceptor molecules.
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Affiliation(s)
- Shengsheng Yu
- Key Laboratory for Organism Resources of the Changbai Mountain and Functional Molecules, Ministry of Education, and Department of Chemistry, College of Science, Yanbian University, Yanji, Jilin 133002, China.
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10
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Sun W, Guo S, Hu C, Fan J, Peng X. Recent Development of Chemosensors Based on Cyanine Platforms. Chem Rev 2016; 116:7768-817. [DOI: 10.1021/acs.chemrev.6b00001] [Citation(s) in RCA: 657] [Impact Index Per Article: 82.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Wen Sun
- State Key Laboratory of Fine
Chemicals, Dalian University of Technology, 2 Linggong Road, 116024 Dalian, China
| | - Shigang Guo
- State Key Laboratory of Fine
Chemicals, Dalian University of Technology, 2 Linggong Road, 116024 Dalian, China
| | - Chong Hu
- State Key Laboratory of Fine
Chemicals, Dalian University of Technology, 2 Linggong Road, 116024 Dalian, China
| | - Jiangli Fan
- State Key Laboratory of Fine
Chemicals, Dalian University of Technology, 2 Linggong Road, 116024 Dalian, China
| | - Xiaojun Peng
- State Key Laboratory of Fine
Chemicals, Dalian University of Technology, 2 Linggong Road, 116024 Dalian, China
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11
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Li B, Li W, Xu Y, Li J, Tu J, Sun S. A simple approach for the discrimination of surfactants based on the control of squaraine aggregation. Chem Commun (Camb) 2016; 51:14652-5. [PMID: 26291579 DOI: 10.1039/c5cc06086a] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The color of squaraine solution shows a "fingerprint" change upon addition of different surfactants. A cross-responsive sensing array based on a small molecular probe was applied to discriminate surfactants with 100% confidence limits. Furthermore, the probe can selectively detect sodium dodecyl sulfate (SDS) with turn-on fluorescence response.
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Affiliation(s)
- Benhao Li
- College of Science, Northwest A & F University, Yangling, Shaanxi 712100, P. R. China.
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12
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Liu Z, Zhang G, Zhang D. Molecular Materials That Can Both Emit Light and Conduct Charges: Strategies and Perspectives. Chemistry 2015; 22:462-71. [DOI: 10.1002/chem.201503038] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2015] [Indexed: 12/12/2022]
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13
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Kim HJ, Kim Y, Cho S, Lee M. Self-Assembly of a Tripod Aromatic Rod into Stacked Planar Networks. Chemistry 2015; 21:11836-42. [DOI: 10.1002/chem.201500780] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2015] [Revised: 06/03/2015] [Indexed: 11/11/2022]
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14
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Đorđević L, Marangoni T, Miletić T, Rubio-Magnieto J, Mohanraj J, Amenitsch H, Pasini D, Liaros N, Couris S, Armaroli N, Surin M, Bonifazi D. Solvent Molding of Organic Morphologies Made of Supramolecular Chiral Polymers. J Am Chem Soc 2015; 137:8150-60. [DOI: 10.1021/jacs.5b02448] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Luka Đorđević
- Department
of Chemical and Pharmaceutical Sciences, INSTM UdR Trieste, University of Trieste, Piazzale Europa 1, 34127 Trieste, Italy
| | - Tomas Marangoni
- Department
of Chemical and Pharmaceutical Sciences, INSTM UdR Trieste, University of Trieste, Piazzale Europa 1, 34127 Trieste, Italy
| | - Tanja Miletić
- Department
of Chemical and Pharmaceutical Sciences, INSTM UdR Trieste, University of Trieste, Piazzale Europa 1, 34127 Trieste, Italy
| | - Jenifer Rubio-Magnieto
- Laboratory
for Chemistry of Novel Materials, Center for Innovation in Materials
and Polymers, University of Mons−UMONS, 20 Place du Parc, B-7000 Mons, Belgium
| | - John Mohanraj
- Istituto
per la Sintesi Organica e la Fotoreattività, Consiglio Nazionale delle Ricerche, Via Gobetti 101, 40129 Bologna, Italy
| | - Heinz Amenitsch
- Institute
of Inorganic Chemistry, Graz University of Technology, Stremayrgasse
9, 8010 Graz, Austria
| | - Dario Pasini
- Department
of Chemistry and INSTM UdR Pavia, University of Pavia, Viale Taramelli
10, 27100 Pavia, Italy
| | - Nikos Liaros
- Department
of Physics, University of Patras, 26504 Patras, Greece
- Institute
of Chemical Engineering Sciences, Foundation for Research and Technology—Hellas, P.O. Box 1414, Patras 26504, Greece
| | - Stelios Couris
- Department
of Physics, University of Patras, 26504 Patras, Greece
- Institute
of Chemical Engineering Sciences, Foundation for Research and Technology—Hellas, P.O. Box 1414, Patras 26504, Greece
| | - Nicola Armaroli
- Istituto
per la Sintesi Organica e la Fotoreattività, Consiglio Nazionale delle Ricerche, Via Gobetti 101, 40129 Bologna, Italy
| | - Mathieu Surin
- Laboratory
for Chemistry of Novel Materials, Center for Innovation in Materials
and Polymers, University of Mons−UMONS, 20 Place du Parc, B-7000 Mons, Belgium
| | - Davide Bonifazi
- Department
of Chemical and Pharmaceutical Sciences, INSTM UdR Trieste, University of Trieste, Piazzale Europa 1, 34127 Trieste, Italy
- Namur
Research College and Department of Chemistry, University of Namur−UNamur, Rue de Bruxelles 61, 5000 Namur, Belgium
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15
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Zhou L, Ge X, Zhou J, Wei S, Shen J. Modulating the photo-exciting process of photosensitizer to improve in vitro phototoxicity by preparing its self-assembly nanostructures. RSC Adv 2015. [DOI: 10.1039/c4ra12855a] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022] Open
Abstract
Self-assembled photosensitizer nanostructures preparation by controlling the charge property of drug and ion strength of environment to improve photodynamic activity.
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Affiliation(s)
- Lin Zhou
- College of Chemistry and Materials Science
- Analysis and Testing Centre
- Jiangsu Key Laboratory of Biofunctional Materials
- Jiangsu Collaborative Innovation Centre of Biomedical Functional Materials
- Key Laboratory of Applied Photochemistry
| | - Xuefeng Ge
- College of Chemistry and Materials Science
- Analysis and Testing Centre
- Jiangsu Key Laboratory of Biofunctional Materials
- Jiangsu Collaborative Innovation Centre of Biomedical Functional Materials
- Key Laboratory of Applied Photochemistry
| | - Jiahong Zhou
- College of Chemistry and Materials Science
- Analysis and Testing Centre
- Jiangsu Key Laboratory of Biofunctional Materials
- Jiangsu Collaborative Innovation Centre of Biomedical Functional Materials
- Key Laboratory of Applied Photochemistry
| | - Shaohua Wei
- College of Chemistry and Materials Science
- Analysis and Testing Centre
- Jiangsu Key Laboratory of Biofunctional Materials
- Jiangsu Collaborative Innovation Centre of Biomedical Functional Materials
- Key Laboratory of Applied Photochemistry
| | - Jian Shen
- College of Chemistry and Materials Science
- Analysis and Testing Centre
- Jiangsu Key Laboratory of Biofunctional Materials
- Jiangsu Collaborative Innovation Centre of Biomedical Functional Materials
- Key Laboratory of Applied Photochemistry
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16
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Zhang D, Zhao YX, Qiao ZY, Mayerhöffer U, Spenst P, Li XJ, Würthner F, Wang H. Nano-Confined Squaraine Dye Assemblies: New Photoacoustic and Near-Infrared Fluorescence Dual-Modular Imaging Probes in Vivo. Bioconjug Chem 2014; 25:2021-9. [DOI: 10.1021/bc5003983] [Citation(s) in RCA: 66] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Di Zhang
- CAS
Key Laboratory for Biological Effects of Nanomaterials and Nanosafety, National Center for Nanoscience and Technology (NCNST), No. 11 Beiyitiao, Zhongguancun, Haidian District, Beijing, 100190, China
| | - Ying-Xi Zhao
- CAS
Key Laboratory for Biological Effects of Nanomaterials and Nanosafety, National Center for Nanoscience and Technology (NCNST), No. 11 Beiyitiao, Zhongguancun, Haidian District, Beijing, 100190, China
- Hebei University of Technology, No. 8 Guangrongdao, Hongqiao District, Tianjin, 300130, China
| | - Zeng-Ying Qiao
- CAS
Key Laboratory for Biological Effects of Nanomaterials and Nanosafety, National Center for Nanoscience and Technology (NCNST), No. 11 Beiyitiao, Zhongguancun, Haidian District, Beijing, 100190, China
| | - Ulrich Mayerhöffer
- Institut für Organische Chemie & Center for Nanosystems Chemistry, Universität Würzburg, Am Hubland, 97074, Würzburg, Germany
| | - Peter Spenst
- Institut für Organische Chemie & Center for Nanosystems Chemistry, Universität Würzburg, Am Hubland, 97074, Würzburg, Germany
| | - Xiao-Jun Li
- Hebei University of Technology, No. 8 Guangrongdao, Hongqiao District, Tianjin, 300130, China
| | - Frank Würthner
- Institut für Organische Chemie & Center for Nanosystems Chemistry, Universität Würzburg, Am Hubland, 97074, Würzburg, Germany
| | - Hao Wang
- CAS
Key Laboratory for Biological Effects of Nanomaterials and Nanosafety, National Center for Nanoscience and Technology (NCNST), No. 11 Beiyitiao, Zhongguancun, Haidian District, Beijing, 100190, China
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17
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Kumar R, Sandhu S, Singh P, Hundal G, Hundal MS, Kumar S. Tripodal Fluorescent Sensor for Encapsulation-Based Detection of Picric Acid in Water. ASIAN J ORG CHEM 2014. [DOI: 10.1002/ajoc.201402008] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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18
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Malicka JM, Sandeep A, Monti F, Bandini E, Gazzano M, Ranjith C, Praveen VK, Ajayaghosh A, Armaroli N. Ultrasound Stimulated Nucleation and Growth of a Dye Assembly into Extended Gel Nanostructures. Chemistry 2013; 19:12991-3001. [DOI: 10.1002/chem.201301539] [Citation(s) in RCA: 75] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2013] [Indexed: 01/01/2023]
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19
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Huang Z, Kim Y, Kim T, Lee M. Supramolecular polymerization of spherical micelles triggered by donor–acceptor interactions. Polym Chem 2013. [DOI: 10.1039/c2py20901b] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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20
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You A, Gao J, Li D, Bouvet M, Chen Y. Effects of metal–ligand coordination on the self-assembly behaviour of a crown ether functionalised perylenetetracarboxylic diimide. Supramol Chem 2012. [DOI: 10.1080/10610278.2012.731063] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Affiliation(s)
- Ao You
- a Shandong Provincial Key Laboratory of Fluorine Chemistry and Chemical Materials, School of Chemistry and Chemical Engineering, University of Jinan , Jinan , 250022 , P.R. China
| | - Jian Gao
- a Shandong Provincial Key Laboratory of Fluorine Chemistry and Chemical Materials, School of Chemistry and Chemical Engineering, University of Jinan , Jinan , 250022 , P.R. China
| | - Dapan Li
- a Shandong Provincial Key Laboratory of Fluorine Chemistry and Chemical Materials, School of Chemistry and Chemical Engineering, University of Jinan , Jinan , 250022 , P.R. China
| | - Marcel Bouvet
- b Institut de Chimie Moléculaire de l'Université de Bourgogne , CNRS UMR 5260, Université de Bourgogne, 21078 , Dijon , France
| | - Yanli Chen
- a Shandong Provincial Key Laboratory of Fluorine Chemistry and Chemical Materials, School of Chemistry and Chemical Engineering, University of Jinan , Jinan , 250022 , P.R. China
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21
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Jiang F, Wang N, Du Z, Wang J, Lan Z, Yang R. Thiophene-Coated Functionalized M12L24Spheres: Synthesis, Characterization, and Electrochemical Properties. Chem Asian J 2012; 7:2230-4. [DOI: 10.1002/asia.201200413] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2012] [Indexed: 12/19/2022]
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22
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Sengupta S, Ebeling D, Patwardhan S, Zhang X, von Berlepsch H, Böttcher C, Stepanenko V, Uemura S, Hentschel C, Fuchs H, Grozema FC, Siebbeles LDA, Holzwarth AR, Chi L, Würthner F. Biosupramolecular Nanowires from Chlorophyll Dyes with Exceptional Charge-Transport Properties. Angew Chem Int Ed Engl 2012. [DOI: 10.1002/ange.201201961] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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23
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Sengupta S, Ebeling D, Patwardhan S, Zhang X, von Berlepsch H, Böttcher C, Stepanenko V, Uemura S, Hentschel C, Fuchs H, Grozema FC, Siebbeles LDA, Holzwarth AR, Chi L, Würthner F. Biosupramolecular nanowires from chlorophyll dyes with exceptional charge-transport properties. Angew Chem Int Ed Engl 2012; 51:6378-82. [PMID: 22644905 DOI: 10.1002/anie.201201961] [Citation(s) in RCA: 84] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2012] [Indexed: 11/10/2022]
Abstract
Conductive tubes: Self-assembled nanotubes of a bacteriochlorophyll derivative are reminiscent of natural chlorosomal light-harvesting assemblies. After deposition on a substrate that consists of a non-conductive silicon oxide surface (see picture, brown) and contacting the chlorin nanowires to a conductive polymer (yellow), they show exceptional charge-transport properties.
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Affiliation(s)
- Sanchita Sengupta
- Universität Würzburg, Institut für Organische Chemie and Center for Nanosystems Chemistry, Am Hubland, 97074 Würzburg, Germany
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24
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Lee J, Park S, Lohani CR, Lee KH, Kim C. Fluorescent Dendron-Cyclodextrin Nanotubes with Surface Peptide Spacer as a Recyclable Sensory Platform. Chemistry 2012; 18:7351-6. [DOI: 10.1002/chem.201200525] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2012] [Indexed: 11/12/2022]
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25
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Xie Z, Stepanenko V, Radacki K, Würthner F. Chiral J-Aggregates of Atropo-Enantiomeric Perylene Bisimides and Their Self-Sorting Behavior. Chemistry 2012; 18:7060-70. [DOI: 10.1002/chem.201200089] [Citation(s) in RCA: 68] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2012] [Revised: 03/16/2012] [Indexed: 11/05/2022]
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26
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Deing KC, Mayerhöffer U, Würthner F, Meerholz K. Aggregation-dependent photovoltaic properties of squaraine/PC61BM bulk heterojunctions. Phys Chem Chem Phys 2012; 14:8328-34. [DOI: 10.1039/c2cp40789b] [Citation(s) in RCA: 80] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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27
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28
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Xu Y, Malkovskiy A, Wang Q, Pang Y. Molecular assembly of a squaraine dye with cationic surfactant and nucleotides: its impact on aggregation and fluorescence response. Org Biomol Chem 2011; 9:2878-84. [PMID: 21373660 DOI: 10.1039/c0ob01061h] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A novel fluorescent system has been assembled by using ATP, surfactant, and a squaraine dye in an aqueous buffer solution. In the system, a cationic surfactant such as cetyl trimethyl ammonium bromide (CTAB) forms a sphere-like micelle, whose positive charge at the surface of the micelle attracts the negatively charged ATP to form a unique organized nanostructure. Such an organized system is shown to interact with the squaraine dye (SQ) to perturb its aggregate structure, thereby generating the optical response. The nanostructure of the assembly has been characterized by dynamic light-scattering (DLS) and atomic force microscopy (AFM). The unique feature of the developed sensing system is that the analytes ATP form part of the assembly structure. The system utilizes forces such as electrostatic interaction and π-π stacking of the aromatic segment of ATP and SQ to achieve the selective detection of ATP.
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Affiliation(s)
- Yongqian Xu
- Department of Chemistry & Maurice Morton Institute of Polymer Science, The University of Akron, Akron, OH 44325, USA
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29
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Ros-Lis JV, Martínez-Máñez R, Soto J, Villaescusa LA, Rurack K. Squaraine “ships” in the Y zeolite “bottle”: a chromogenic sensing material for the detection of volatile amines and thiols. ACTA ACUST UNITED AC 2011. [DOI: 10.1039/c0jm03780j] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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30
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Varghese R, Wagenknecht HA. Non-covalent Versus Covalent Control of Self-Assembly and Chirality of Nile Red-modified Nucleoside and DNA. Chemistry 2010; 16:9040-6. [DOI: 10.1002/chem.201001136] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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31
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Wang W, Fu A, Lan J, Gao G, You J, Chen L. Rational Design of Fluorescent Bioimaging Probes by Controlling the Aggregation Behavior of Squaraines: A Special Effect of Ionic Liquid Pendants. Chemistry 2010; 16:5129-37. [DOI: 10.1002/chem.200903492] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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32
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Beverina L, Salice P. Squaraine Compounds: Tailored Design and Synthesis towards a Variety of Material Science Applications. European J Org Chem 2010. [DOI: 10.1002/ejoc.200901297] [Citation(s) in RCA: 264] [Impact Index Per Article: 18.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Luca Beverina
- Department of Materials Science and INSTM, University of Milano‐Bicocca, via Cozzi 53, 20125 Milano, Italy
| | - Patrizio Salice
- Department of Materials Science and INSTM, University of Milano‐Bicocca, via Cozzi 53, 20125 Milano, Italy
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33
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Matsuzawa Y, Tamaoki N. Photoisomerization of Azobenzene Units Controls the Reversible Dispersion and Reorganization of Fibrous Self-Assembled Systems. J Phys Chem B 2010; 114:1586-90. [DOI: 10.1021/jp909460a] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Yoko Matsuzawa
- Nanotechnology Research Institute (NRI), National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba Central 5-2, 1-1-1 Higashi Tsukuba, 305-8565, Japan
| | - Nobuyuki Tamaoki
- Nanotechnology Research Institute (NRI), National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba Central 5-2, 1-1-1 Higashi Tsukuba, 305-8565, Japan
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34
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Long-Wavelength Probes and Labels Based on Cyanines and Squaraines. SPRINGER SERIES ON FLUORESCENCE 2010. [DOI: 10.1007/978-3-642-04702-2_3] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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35
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Zeng Y, Zhang G, Zhang D, Zhu D. A New Tetrathiafulvalene−Quinone−Tetrathiafulvalene Triad: Modulation of the Intramolecular Charge Transfer by the Electron-Transfer Process Promoted by Metal Ions. J Org Chem 2009; 74:4375-8. [DOI: 10.1021/jo9007332] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Yan Zeng
- Beijing National Laboratory for Molecular Sciences, Organic Solids Laboratory, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, People’s Republic of China, and Graduate School of Chinese Academy of Sciences, Beijing 100049, People’s Republic of China
| | - Guanxin Zhang
- Beijing National Laboratory for Molecular Sciences, Organic Solids Laboratory, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, People’s Republic of China, and Graduate School of Chinese Academy of Sciences, Beijing 100049, People’s Republic of China
| | - Deqing Zhang
- Beijing National Laboratory for Molecular Sciences, Organic Solids Laboratory, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, People’s Republic of China, and Graduate School of Chinese Academy of Sciences, Beijing 100049, People’s Republic of China
| | - Daoben Zhu
- Beijing National Laboratory for Molecular Sciences, Organic Solids Laboratory, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, People’s Republic of China, and Graduate School of Chinese Academy of Sciences, Beijing 100049, People’s Republic of China
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36
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Iwaura R, Ohnishi-Kameyama M, Iizawa T. Construction of helical J-aggregates self-assembled from a thymidylic acid appended anthracene dye and DNA as a template. Chemistry 2009; 15:3729-35. [PMID: 19206120 DOI: 10.1002/chem.200802537] [Citation(s) in RCA: 47] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
The thymidylic acid appended anthracene dye 2,6-bis[5-(3'-thymidylic acid)pentyloxy]anthracene (1) was synthesized, and the self-assembly of 1 and the binary self-assembly of 1 with a complementary single-stranded 20-meric oligodeoxyadenylic acid (dA(20)) were performed in 0.1 x TE buffer solution (i.e., 1.0 x 10(-3) M Tris-HCl, 1.0 x 10(-4) M ethylenediaminetriacetic acid (EDTA)). The characteristic J-band, small Stokes shift (6 nm), Cotton effect, and helical nanofibers 5.1 nm in diameter are observed in UV/Vis, fluorescence, and circular dichroism (CD) spectroscopies and atomic force microscopy (AFM) measurements for the binary self-assembly of 1 and dA(20) in aqueous solution. These observations revealed that the helical J-aggregates, in which the short-axis transition dipoles of the anthracene moieties are aligned in a head-to-tail fashion, are formed from the binary self-assembly of 1 and dA(20). The UV/Vis absorption and CD band of the anthracene L(a) region were found to be strongly dependent on temperature and showed cooperative changes for the binary self-assembly of 1 and dA(20). The self-assembly of the single-component 1 produced right- and left-handed helical nanofibers with diameters ranging from 4.0 to 10 nm. In contrast, for the binary self-assembly, the UV/Vis and fluorescence spectra showed no J-band and the Stokes shift was at approximately 107 nm for the single-component 1 in aqueous solution. In addition, the binary self-assembly of 1 and noncomplementary single-stranded 20-meric oligothymidylic acid (dT(20)) showed a small J-band and the J-band disappeared at 50 degrees C upon heating. On the basis of these observations, we concluded that thymine-adenine base-pair formation induced supramolecular helical J-aggregates in the binary self-assembly of 1 and dA(20) in aqueous solutions.
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Affiliation(s)
- Rika Iwaura
- National Food Research Institute, National Agriculture and Food Research Organization, 2-1-12 Kannondai, Tsukuba, Ibaraki, 305-8642, Japan.
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37
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Houjou H, Kokubun M, Yoshikawa I, Araki K. A High-contrast Dichroic Crystal: A New Metal-containing Tecton with Hybrid Coordination- and Hydrogen-bonding Interactions. CHEM LETT 2009. [DOI: 10.1246/cl.2009.436] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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38
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Wu J, Yi T, Zou Y, Xia Q, Shu T, Liu F, Yang Y, Li F, Chen Z, Zhou Z, Huang C. Gelation induced reversible syneresis via structural evolution. ACTA ACUST UNITED AC 2009. [DOI: 10.1039/b900049f] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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