1151
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Wilson JN, Hardcastle KI, Josowicz M, Bunz UH. Synthesis and electronic properties of bis-styryl substituted trimeric aryleneethynylenes. Comparison of cruciforms with iso-cruciforms. Tetrahedron 2004. [DOI: 10.1016/j.tet.2004.06.040] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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1152
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Egbe DAM, Stockmann R, Hotzel M. Third-order nonlinear optical behaviour of hybrid phenylene–ethynylene/phenylene–vinylene polymers. ACTA ACUST UNITED AC 2004. [DOI: 10.1088/1464-4258/6/8/009] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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1153
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Dong YB, Wang P, Huang RQ, Smith MD. Syntheses and Structures of Ag(I)-Containing Coordination Polymers and Co(II)-Containing Supramolecular Complex Based on Novel Fulvene Ligands. Inorg Chem 2004; 43:4727-39. [PMID: 15257602 DOI: 10.1021/ic0495517] [Citation(s) in RCA: 115] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Three new rigid conjugated fulvene ligands L1-L3 were synthesized. L1 and L3 have been prepared by an aroylation reaction of cyclohexyl-substituted cyclopentadienyl anions. L2 was prepared by the reaction of L1 with PhNHNH2 in hot enthanol. Six new coordination polymers, namely [Ag(C25H20N2O2)(ClO4)] x 3.5C6H6 (1), [Ag2(mu-C31H24N4)(eta2-C6H6)(H2O)](ClO4)2 x (C6H6) x (H2O)0.5 (3), [Ag(C31H24N4)]SbF6 x solvate (4), [Ag(C31H24N4)](SbF6)2 x 2C6H6 x CH2Cl2 (5), [Ag(C25H20N2O2)2]SbF6 (6), and [Ag(C25H20N2O2)2]SbF6 (7), and one seven-membered cobaltacycle-containing complex, namely Co(C25H20N2O2)2(C2H5OH)2 (2), were obtained through self-assembly based on these three new fulvene lignads. L2-L3 and compounds 1-7 have been fully characterized by infrared spectroscopy, elemental analysis, and single-crystal X-ray diffraction. The results indicate that the coordination chemistry of new fulvene ligands is versatile. They can bind metal ions not only through the terminal N-donors and fulvene carbon atoms into organometallic coordination polymers but also through the two chelating carbonyl groups into unusual seven-membered metallo-ring supramolecular complexes. In the solid state, ligands L1-L3 are luminescent. A blue-shift in the emission was observed between the free ligand L1 and the one incorporated into Co(II)-containing complex 2, and a red-shift in the emission was observed between the free ligand L3 and the one incorporated into Ag(I)-containing polymeric compounds 6 and 7.
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Affiliation(s)
- Yu-Bin Dong
- College of Chemistry, Chemical Engineering and Materials Science, Shandong Normal University, Jinan, 250014, P. R. China.
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1154
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Chu Q, Pang Y. Vibronic structures in the electronic spectra of oligo(phenylene ethynylene): effect of m-phenylene to the optical properties of poly(m-phenylene ethynylene). SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2004; 60:1459-1467. [PMID: 15147688 DOI: 10.1016/j.saa.2003.08.012] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/02/2003] [Revised: 07/02/2003] [Accepted: 08/21/2003] [Indexed: 05/24/2023]
Abstract
At the low temperature, hidden vibronic structures are successfully resolved in the absorption and emission spectra of oligo(phenylene ethynylene)s 3-5. Identification of the hidden bands allows estimation of the vibrational energy gaps in these molecules, which appears to increase with the oligomer conjugation length. The remarkable similarity between the absorption profiles of diphenylacetylene (3) and 1,3-bis(phenylethynyl)benzene (5), especially at -198 degrees C, confirms the effectiveness of conjugation interruption at m-phenylene. The function of precise conjugation length control via m-phenylene is further demonstrated from poly(m-phenylene ethynylene) (PmPE) (6). Even though the number of recurring unit (phenylene ethynylene) increases from 2 (for 5) to 12 (for 6), the absorption and emission spectra of the latter are nearly identical to that of the former.
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Affiliation(s)
- Qinghui Chu
- Department of Chemistry, Center for High Performance Polymers and Composites, Clark Atlanta University, Atlanta, GA 30314, USA
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1155
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D'Amato R, Fratoddi I, Cappotto A, Altamura P, Delfini M, Bianchetti C, Bolasco A, Polzonetti G, Russo MV. Organometallic Platinum(II) and Palladium(II) Polymers Containing 2,6-Diethynyl-4-nitroaniline Bridging Spacer and Related Dinuclear Model Complexes. Organometallics 2004. [DOI: 10.1021/om049972w] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Rosaria D'Amato
- Department of Chemistry, University of Rome “La Sapienza”, P.le A. Moro 5, 00185 Rome, Italy, and Department “Studi di Chimica e Tecnologia delle Sostanze Biologicamente Attive”, University of Rome “La Sapienza”, P.le A. Moro 5, 00185 Rome, Italy, and Department of Physics, University of Rome “Roma Tre”, Via della Vasca Navale 84, 00146 Rome, Italy
| | - Ilaria Fratoddi
- Department of Chemistry, University of Rome “La Sapienza”, P.le A. Moro 5, 00185 Rome, Italy, and Department “Studi di Chimica e Tecnologia delle Sostanze Biologicamente Attive”, University of Rome “La Sapienza”, P.le A. Moro 5, 00185 Rome, Italy, and Department of Physics, University of Rome “Roma Tre”, Via della Vasca Navale 84, 00146 Rome, Italy
| | - Alberto Cappotto
- Department of Chemistry, University of Rome “La Sapienza”, P.le A. Moro 5, 00185 Rome, Italy, and Department “Studi di Chimica e Tecnologia delle Sostanze Biologicamente Attive”, University of Rome “La Sapienza”, P.le A. Moro 5, 00185 Rome, Italy, and Department of Physics, University of Rome “Roma Tre”, Via della Vasca Navale 84, 00146 Rome, Italy
| | - Patrizia Altamura
- Department of Chemistry, University of Rome “La Sapienza”, P.le A. Moro 5, 00185 Rome, Italy, and Department “Studi di Chimica e Tecnologia delle Sostanze Biologicamente Attive”, University of Rome “La Sapienza”, P.le A. Moro 5, 00185 Rome, Italy, and Department of Physics, University of Rome “Roma Tre”, Via della Vasca Navale 84, 00146 Rome, Italy
| | - Maurizio Delfini
- Department of Chemistry, University of Rome “La Sapienza”, P.le A. Moro 5, 00185 Rome, Italy, and Department “Studi di Chimica e Tecnologia delle Sostanze Biologicamente Attive”, University of Rome “La Sapienza”, P.le A. Moro 5, 00185 Rome, Italy, and Department of Physics, University of Rome “Roma Tre”, Via della Vasca Navale 84, 00146 Rome, Italy
| | - Cristiano Bianchetti
- Department of Chemistry, University of Rome “La Sapienza”, P.le A. Moro 5, 00185 Rome, Italy, and Department “Studi di Chimica e Tecnologia delle Sostanze Biologicamente Attive”, University of Rome “La Sapienza”, P.le A. Moro 5, 00185 Rome, Italy, and Department of Physics, University of Rome “Roma Tre”, Via della Vasca Navale 84, 00146 Rome, Italy
| | - Adriana Bolasco
- Department of Chemistry, University of Rome “La Sapienza”, P.le A. Moro 5, 00185 Rome, Italy, and Department “Studi di Chimica e Tecnologia delle Sostanze Biologicamente Attive”, University of Rome “La Sapienza”, P.le A. Moro 5, 00185 Rome, Italy, and Department of Physics, University of Rome “Roma Tre”, Via della Vasca Navale 84, 00146 Rome, Italy
| | - Giovanni Polzonetti
- Department of Chemistry, University of Rome “La Sapienza”, P.le A. Moro 5, 00185 Rome, Italy, and Department “Studi di Chimica e Tecnologia delle Sostanze Biologicamente Attive”, University of Rome “La Sapienza”, P.le A. Moro 5, 00185 Rome, Italy, and Department of Physics, University of Rome “Roma Tre”, Via della Vasca Navale 84, 00146 Rome, Italy
| | - Maria V. Russo
- Department of Chemistry, University of Rome “La Sapienza”, P.le A. Moro 5, 00185 Rome, Italy, and Department “Studi di Chimica e Tecnologia delle Sostanze Biologicamente Attive”, University of Rome “La Sapienza”, P.le A. Moro 5, 00185 Rome, Italy, and Department of Physics, University of Rome “Roma Tre”, Via della Vasca Navale 84, 00146 Rome, Italy
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1156
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Wang W, Xu J, Lai YH, Wang F. Alternating Aromatic and Transannular Chromophores with and without Linker: Effect of Transannular π−π Interaction on the Optical Property of Dithiaparacyclophane-based Copolymers. Macromolecules 2004. [DOI: 10.1021/ma035902+] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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1157
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Arques A, Auñon D, Molina P. A copper- and amine-free Sonogashira coupling reaction promoted by a ferrocene-based phosphinimine-phosphine ligand at low catalyst loading. Tetrahedron Lett 2004. [DOI: 10.1016/j.tetlet.2004.03.194] [Citation(s) in RCA: 75] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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1158
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Segmented multitopic ligands constructed from bipyrimidine, phenanthroline, and terpyridine modules. Tetrahedron Lett 2004. [DOI: 10.1016/j.tetlet.2004.03.147] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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1159
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Nishiura M. Organolanthanide catalyzed regio- and stereoselective dimerization of terminal alkynes and polymerization of aromatic diynes. ACTA ACUST UNITED AC 2004. [DOI: 10.1016/j.molcata.2003.10.053] [Citation(s) in RCA: 81] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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1160
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1161
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Morisaki Y, Chen H, Chujo Y. Synthesis and properties of PPE-type conjugated polymers containing tricarbonyl(arene)chromium unit in the main chain. J Organomet Chem 2004. [DOI: 10.1016/j.jorganchem.2004.01.021] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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1162
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Iijima T, Yamamoto T. Preparation of Main-Chain-Type Quinolinol Polymers by Organometallic Polycondensation. Macromol Rapid Commun 2004. [DOI: 10.1002/marc.200300144] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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1163
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Dong YB, Jin GX, Zhao X, Tang B, Huang RQ, Smith MD, Stitzer KE, zur Loye HC. Novel CpAg(I)-Containing Organometallic Coordination Polymers Generated from Fulvene Ligands. Organometallics 2004. [DOI: 10.1021/om0342053] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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1164
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Grummt UW, Pautzsch T, Birckner E, Utterodt A, Neugebauer U, Klemm E. Photophysics of Poly{2,2′-bipyridine-5,5′-diylethynylene [2,5-di(2-ethylhexyl)oxy-1,4-phenylene[ethynylene}: a comparison with monomer and dimer model compounds. J PHYS ORG CHEM 2004. [DOI: 10.1002/poc.714] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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1165
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Métivier R, Amengual R, Leray I, Michelet V, Genêt JP. Novel Fluorophores: Efficient Synthesis and Photophysical Properties. Org Lett 2004; 6:739-42. [PMID: 14986963 DOI: 10.1021/ol036399o] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The synthesis of new donor-acceptor acetylene-bridged compounds was realized via organophosphorus reactions and Sonogashira couplings. These systems exhibit high fluorescence quantum yields, and excitation induces very efficient charge redistribution in the molecules. [structure: see text]
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Affiliation(s)
- Rémi Métivier
- CNRS UMR 8531 Laboratoire de Photophysique et Photochimie Supramoléculaires et Macromoléculaires, Département de Chimie, ENS-Cachan, 61 Avenue du Président Wilson, F-94235 Cachan Cedex, France
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1166
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Li K, Wang Q. Synthesis and Solution Aggregation of Polystyrene−Oligo(p-phenyleneethynylene)−Polystyrene Triblock Copolymer. Macromolecules 2004. [DOI: 10.1021/ma035503e] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Kun Li
- Department of Materials Science and Engineering, The Pennsylvania State University, University Park, Pennsylvania 16802
| | - Qing Wang
- Department of Materials Science and Engineering, The Pennsylvania State University, University Park, Pennsylvania 16802
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1167
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Murphy CB, Zhang Y, Troxler T, Ferry V, Martin JJ, Jones WE. Probing Förster and Dexter Energy-Transfer Mechanisms in Fluorescent Conjugated Polymer Chemosensors. J Phys Chem B 2004. [DOI: 10.1021/jp0301406] [Citation(s) in RCA: 280] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Clifford B. Murphy
- Department of Chemistry and Institute for Materials Research, State University of New York at Binghamton, Vestal Parkway East, Binghamton, New York 13902, and NIH Regional Laser and Biotechnology Laboratory, University of Pennsylvania, Philadelphia, Pennsylvania 19104
| | - Yan Zhang
- Department of Chemistry and Institute for Materials Research, State University of New York at Binghamton, Vestal Parkway East, Binghamton, New York 13902, and NIH Regional Laser and Biotechnology Laboratory, University of Pennsylvania, Philadelphia, Pennsylvania 19104
| | - Thomas Troxler
- Department of Chemistry and Institute for Materials Research, State University of New York at Binghamton, Vestal Parkway East, Binghamton, New York 13902, and NIH Regional Laser and Biotechnology Laboratory, University of Pennsylvania, Philadelphia, Pennsylvania 19104
| | - Vivian Ferry
- Department of Chemistry and Institute for Materials Research, State University of New York at Binghamton, Vestal Parkway East, Binghamton, New York 13902, and NIH Regional Laser and Biotechnology Laboratory, University of Pennsylvania, Philadelphia, Pennsylvania 19104
| | - Justin J. Martin
- Department of Chemistry and Institute for Materials Research, State University of New York at Binghamton, Vestal Parkway East, Binghamton, New York 13902, and NIH Regional Laser and Biotechnology Laboratory, University of Pennsylvania, Philadelphia, Pennsylvania 19104
| | - Wayne E. Jones
- Department of Chemistry and Institute for Materials Research, State University of New York at Binghamton, Vestal Parkway East, Binghamton, New York 13902, and NIH Regional Laser and Biotechnology Laboratory, University of Pennsylvania, Philadelphia, Pennsylvania 19104
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1168
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Zhao L, Perepichka IF, Türksoy F, Batsanov AS, Beeby A, Findlay KS, Bryce MR. 2,5-Di(aryleneethynyl)pyrazine derivatives: synthesis, structural and optoelectronic properties, and light-emitting device. NEW J CHEM 2004. [DOI: 10.1039/b401867m] [Citation(s) in RCA: 35] [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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1169
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Collings JC, Burke JM, Smith PS, Batsanov AS, Howard JAK, Marder TB. The synthesis and crystal structures of halogenated tolans p-X–C6H4–CC–C6F5and p-X–C6F4–CC–C6H5(X = F, Cl, Br, I). Org Biomol Chem 2004; 2:3172-8. [PMID: 15505725 DOI: 10.1039/b411191e] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A series of halogenated, partially fluorinated tolans of general formula p-X-C6H4-C[triple bond]C-C6F5[X=I (1), Br (2), Cl (3), F (4)] and p-X-C6F4-C[triple bond]C-C6H5[X=I (5), Br (6)] have been prepared via palladium-catalysed Sonogashira cross-coupling, or for X=Cl (7), by nucleophilic aromatic substitution reactions. The single-crystal X-ray structures of 1-3 and 5-6 have been determined. The structures reveal that the molecular packing is characterized by either arene-perfluoroarene interactions (3), or halogen-halogen interactions (isomorphous 1 and 2), or neither (isomorphous 5 and 6). The structure of represents the first fully determined crystal structure of a compound that contains a halogen atom other than fluorine, in which arene-perfluoroarene interactions are present.
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1170
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Morisaki Y, Ishida T, Tanaka H, Chujo Y. Synthesis and properties of the [2.2]paracyclophane-containing conjugated polymer with benzothiadiazole as an electron acceptor. ACTA ACUST UNITED AC 2004. [DOI: 10.1002/pola.20443] [Citation(s) in RCA: 42] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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1171
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Jiang C, Yu Z, Wang S, Jiao C, Li J, Wang Z, Cui Y. Rational Design of Metal-Organic Frameworks Based on 5-(4-Pyridyl)tetrazolate: From 2D Grids to 3D Porous Networks. Eur J Inorg Chem 2004. [DOI: 10.1002/ejic.200400170] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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1172
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Hughes G, Kreher D, Wang C, Batsanov AS, Bryce MR. Ethynyl π-extended 2,5-diphenyl-1,3,4-oxadiazoles and 2-phenyl 5-(2-thienyl)-1,3,4-oxadiazoles: synthesis, X-ray crystal structures and optical properties. Org Biomol Chem 2004; 2:3363-7. [PMID: 15534714 DOI: 10.1039/b407698m] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
2-(4-tert-Butylphenyl)-5-(4-ethynylphenyl)-1,3,4-oxadiazole reacts with a series of heteroaryl iodides under standard Sonogashira cross-coupling conditions (Pd[PPh(3)](2)Cl(2), CuI, triethylamine, THF) to yield products 2a-g in 40-79% yields (heteroaryl = 2-pyridyl, 3-pyridyl, 4-pyridyl, 2-pyrazyl, 5-bromo-2-pyrimidyl, 2-thienyl and 3-thienyl, respectively). Compound 2f was lithiated followed by electrophilic iodination (BuLi, perfluorohexyl iodide) to give 3, which by a two-step sequence gave the terminal ethynylthienyl derivative 5. Conversion of 5 into the terminal ethynylaldehyde derivative 7, via acetal derivative 6, proceeded in high yield. Starting from 2-iodo-5-methoxycarbonylthiophene, a five-step sequence afforded 2-(4-tert-butylphenyl)-5-(4-ethynylthienyl)-1,3,4-oxadiazole 13 (13% overall yield). Reactions of 13 gave terminal pyridyl, pyrazyl, pyrimidyl and thienyl derivatives, analogous to those obtained from 1. Two-fold reaction of 13 with 2,5-diiodothiophene gave the bis(ethynylthienyl)thiophene derivative 15 (30% yield). Solution UV-Vis absorption and photoluminescence spectra establish that replacement of the phenyl ring in the 2,5-diphenyl-1,3,4-oxadiazole series 2a-g by a thienyl ring [i.e. the 2-phenyl-5-(2-thienyl)-1,3,4-oxadiazole series 14a-g] leads to a red shift in the lowest energy band in both the absorption spectra and emission spectra. The X-ray crystal structures of compounds 2d, 2g, 5 and 14d.CHCl(3) reveal that the molecular structures are approximately planar although there are substantial differences in the conformations.
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Affiliation(s)
- Gregory Hughes
- Department of Chemistry, University of Durham, Durham DH1 3LE, UK
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1173
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Khan MS, Al-Mandhary MRA, Al-Suti MK, Al-Battashi FR, Al-Saadi S, Ahrens B, Bjernemose JK, Mahon MF, Raithby PR, Younus M, Chawdhury N, Kohler A, Marseglia EA, Tedesco E, Feeder N, Teat SJ. Synthesis, characterisation and optical spectroscopy of platinum(ii) di-ynes and poly-ynes incorporating condensed aromatic spacers in the backbone. Dalton Trans 2004:2377-85. [PMID: 15278134 DOI: 10.1039/b405070c] [Citation(s) in RCA: 98] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A series of protected and terminal dialkynes with extended pi-conjugation through a condensed aromatic linker unit in the backbone, 1,4-bis(trimethylsilylethynyl)naphthalene, 1,4-bis(ethynyl)naphthalene, 9,10-bis(trimethylsilylethynyl)anthracene, 9,10-bis(ethynyl)anthracene, have been synthesized and characterized spectroscopically. The solid-state structures of and have been confirmed by single crystal X-ray diffraction studies. Reaction of two equivalents of the complex trans-[Ph(Et(3)P)(2)PtCl] with an equivalent of the terminal dialkynes 1,4-bis(ethynyl)benzene and, in (i)Pr(2)NH-CH(2)Cl(2), in the presence of CuI, at room temperature, afforded the platinum(II) di-ynes trans-[Ph(Et(3)P)(2)Pt-C[triple bond, length as m-dash]C-R-C[triple bond, length as m-dash]C-Pt(PEt(3))(2)Ph](R = benzene-1,4-diyl; naphthalene-1,4-diyl and anthracene-9,10-diyl ) while reactions between equimolar quantities of trans-[((n)Bu(3)P)(2)PtCl(2)] and under similar conditions readily afforded the platinum(II) poly-ynes trans-[-((n)Bu(3)P)(2)Pt-C[triple bond]C-R-C[triple bond]C-](n)(R = naphthalene-1,4-diyl and anthracene-9,10-diyl ). The Pt(II) diynes and poly-ynes have been characterized by analytical and spectroscopic methods, and the single crystal X-ray structures of and have been determined. These structures confirm the trans-square planar geometry at the platinum centres and the linear nature of the molecules. The di-ynes and poly-ynes are soluble in organic solvents and readily cast into thin films. Optical spectroscopic measurements reveal that the electron-rich naphthalene and anthracene spacers create strong donor-acceptor interactions between the Pt(II) centres and conjugated ligands along the rigid backbone of the organometallic polymers. Thermogravimetry shows that the di-ynes possess a somewhat higher thermal stability than the corresponding poly-ynes. Both the Pt(II) di-ynes and the poly-ynes exhibit increasing thermal stability along the series of spacers from phenylene through naphthalene to anthracene.
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Affiliation(s)
- Muhammad S Khan
- Department of Chemistry, Sultan Qaboos University, P.O. Box 36, Al Khod, 123, Sultanate of Oman.
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1174
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Blankenburg L, Meissner A, Sherif M, Klemm E. New oligomers with alternating phenylene ethynylene pyridinylene structure. Des Monomers Polym 2004. [DOI: 10.1163/1568555041475310] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
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1175
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Lin CY, Chuang LC, Yang YF, Lin CL, Kao HC, Wang WJ. Preparation, electrochemical and spectral properties of N-methylated pyridylethynyl porphyrins. Dalton Trans 2004:456-62. [PMID: 15252554 DOI: 10.1039/b313575f] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A new series of electron-deficient porphyrins were prepared by attaching one or two N-methylated 2-, 3- or 4-pyridylethynyl groups to the 10,20-meso positions of (5,15-biphenylporphinato)zinc(II). Electrochemical studies showed significant changes in the reduction potentials of these porphyrins, and N-methyl-2-pyridylethyne is the strongest electron-withdrawing substituent in the series. UV-visible spectra demonstrated largely red-shifted absorptions, and N-methyl-4-pyridylethyne has the greatest impact to the porphyrin absorptions. Electrochemical, UV-visible and EPR results concluded that porphyrins Zn2 and Zn6 reversibly undergo two one-electron porphyrin-ring reductions to their anion radicals then dianions. The first reductions of porphyrins Zn1, Zn3, Zn4 and Zn5 were irreversible one-electron transfer processes. The instability of these reduction products was suggested to result from the eletrophilic attacks at the substituents.
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Affiliation(s)
- Ching-Yao Lin
- Department of Applied Chemistry, National Chi Nan University, 302 University Road, Puli, Nantou Hsien 545, Taiwan.
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1176
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Leroy-Lhez S, Parker A, Lapouyade P, Belin C, Ducasse L, Oberle J, Fages F. Tunable fluorescence emission in pyrene–(2,2′-bipyridine) dyads containing phenylene–ethynylene bridges. Photochem Photobiol Sci 2004; 3:949-59. [PMID: 15480486 DOI: 10.1039/b409250c] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A synthetic route is described for the preparation of a series of pyrene-containing pi-conjugated 2,2'-bipyridine (bpy) ligands. These compounds have been investigated by steady-state and time-resolved fluorescence spectroscopy. They display intense visible absorption and fluorescence emission properties that can be very efficiently modulated by the complexation of zinc(ii) metal ions to the bpy coordinating unit. The solvatochromism of the emission band of the zinc(ii) complexes, the fluorescence quantum yields, and lifetimes in THF have been determined. Zinc(ii)-induced formation of a charge transfer singlet excited states induces an increase in dipole moment of more than 20 D. Semiempirical theoretical calculations were performed and allowed to assess the electronic nature of ground and excited states of the free ligands and and that of the corresponding zinc(ii) complexes.
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1177
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Morisaki Y, Chujo Y. Synthesis and Properties of a Novel Through-Space Conjugated Polymer with [2.2]Paracyclophane and Ferrocene in the Main Chain. Macromolecules 2003. [DOI: 10.1021/ma030464s] [Citation(s) in RCA: 70] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Yasuhiro Morisaki
- Department of Polymer Chemistry, Graduate School of Engineering, Kyoto University, Katsura, Nishikyo-ku, Kyoto 615-8510, Japan
| | - Yoshiki Chujo
- Department of Polymer Chemistry, Graduate School of Engineering, Kyoto University, Katsura, Nishikyo-ku, Kyoto 615-8510, Japan
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1178
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Egbe DAM, Bader C, Klemm E, Ding L, Karasz FE, Grummt UW, Birckner E. Influence of the Conjugation Pattern on the Photophysical Properties of Alkoxy-Substituted PE/PV Hybrid Polymers. Macromolecules 2003. [DOI: 10.1021/ma030339g] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Daniel Ayuk Mbi Egbe
- Institut für Organische Chemie und Makromolekulare Chemie der Friedrich-Schiller-Universität Jena, Lessingstr. 8, 07743 Jena, Germany; Department of Polymer Science and Engineering, University of Massachusetts, Amherst, Massachusetts 01003; and Institut für Physikalische Chemie der Friedrich-Schiller Universität Jena, Lessingstr. 10, D-07743 Jena, Germany
| | - Cornelia Bader
- Institut für Organische Chemie und Makromolekulare Chemie der Friedrich-Schiller-Universität Jena, Lessingstr. 8, 07743 Jena, Germany; Department of Polymer Science and Engineering, University of Massachusetts, Amherst, Massachusetts 01003; and Institut für Physikalische Chemie der Friedrich-Schiller Universität Jena, Lessingstr. 10, D-07743 Jena, Germany
| | - Elisabeth Klemm
- Institut für Organische Chemie und Makromolekulare Chemie der Friedrich-Schiller-Universität Jena, Lessingstr. 8, 07743 Jena, Germany; Department of Polymer Science and Engineering, University of Massachusetts, Amherst, Massachusetts 01003; and Institut für Physikalische Chemie der Friedrich-Schiller Universität Jena, Lessingstr. 10, D-07743 Jena, Germany
| | - Liming Ding
- Institut für Organische Chemie und Makromolekulare Chemie der Friedrich-Schiller-Universität Jena, Lessingstr. 8, 07743 Jena, Germany; Department of Polymer Science and Engineering, University of Massachusetts, Amherst, Massachusetts 01003; and Institut für Physikalische Chemie der Friedrich-Schiller Universität Jena, Lessingstr. 10, D-07743 Jena, Germany
| | - Frank E. Karasz
- Institut für Organische Chemie und Makromolekulare Chemie der Friedrich-Schiller-Universität Jena, Lessingstr. 8, 07743 Jena, Germany; Department of Polymer Science and Engineering, University of Massachusetts, Amherst, Massachusetts 01003; and Institut für Physikalische Chemie der Friedrich-Schiller Universität Jena, Lessingstr. 10, D-07743 Jena, Germany
| | - Ulrich-Walter Grummt
- Institut für Organische Chemie und Makromolekulare Chemie der Friedrich-Schiller-Universität Jena, Lessingstr. 8, 07743 Jena, Germany; Department of Polymer Science and Engineering, University of Massachusetts, Amherst, Massachusetts 01003; and Institut für Physikalische Chemie der Friedrich-Schiller Universität Jena, Lessingstr. 10, D-07743 Jena, Germany
| | - Eckhard Birckner
- Institut für Organische Chemie und Makromolekulare Chemie der Friedrich-Schiller-Universität Jena, Lessingstr. 8, 07743 Jena, Germany; Department of Polymer Science and Engineering, University of Massachusetts, Amherst, Massachusetts 01003; and Institut für Physikalische Chemie der Friedrich-Schiller Universität Jena, Lessingstr. 10, D-07743 Jena, Germany
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1179
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Dong YB, Zhao X, Jin GX, Huang RQ, Smith M. New AgI Organometallic Coordination Polymers and MII (M = CuII and CoII) Inorganic Supramolecular Complexes Generated from New Fulvene-Type Ligands. Eur J Inorg Chem 2003. [DOI: 10.1002/ejic.200300368] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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1180
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1181
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Leadbeater NE, Tominack BJ. Rapid, easy copper-free Sonogashira couplings using aryl iodides and activated aryl bromides. Tetrahedron Lett 2003. [DOI: 10.1016/j.tetlet.2003.09.159] [Citation(s) in RCA: 110] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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1182
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Pak JJ, Darwish OS, Weakley TJ, Haley MM. Synthesis and crystallographic characterization of a ‘palladadehydrobenzo[19]annulene’. J Organomet Chem 2003. [DOI: 10.1016/s0022-328x(03)00707-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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1183
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Xu GL, Jablonski CG, Ren T. Further studies of tetrakis(N,N′-dialkylbenzamidinato)diruthenium(III) chloro and alkynyl compounds: molecular engineering of metallayne monomers. J Organomet Chem 2003. [DOI: 10.1016/j.jorganchem.2003.08.005] [Citation(s) in RCA: 35] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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1184
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Brizius G, Billingsley K, Smith MD, Bunz UHF. Conformational and Electronic Engineering of Twisted Diphenylacetylenes. Org Lett 2003; 5:3951-4. [PMID: 14535751 DOI: 10.1021/ol035532+] [Citation(s) in RCA: 46] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
[structure: see text] Three tethered diphenylacetylene derivatives were prepared by alkyne metathesis. In these cycles, the twist angle between the two benzene rings is variable and determined by the nature of the linker. The engineering of the twist angle leads to a change of the UV-vis spectra of the cycles. The larger the twist angle in the macrocycles, the more blue shifted their lambda(max) (UV-vis), the lower their fluorescence quantum yield, and the lower field shifted their (13)C NMR signals of the alkyne carbons are.
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Affiliation(s)
- Glen Brizius
- School of Chemistry and Biochemistry, Georgia Institute of Technology, Atlanta, Georgia 30332-0400, USA
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1185
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Bunz UH. New carbon-rich organometallic architectures based on cyclobutadienecyclopentadienylcobalt and ferrocene modules. J Organomet Chem 2003. [DOI: 10.1016/j.jorganchem.2003.07.024] [Citation(s) in RCA: 60] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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1186
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La Groia A, Ricci A, Bassetti M, Masi D, Bianchini C, Lo Sterzo C. Preparation of models and oligomers of metal alkynyls. J Organomet Chem 2003. [DOI: 10.1016/j.jorganchem.2003.08.007] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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1187
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Rodríguez JG, Esquivias J, Lafuente A, Díaz C. Synthesis of Nanostructures Based on 1,4- and 1,3,5-Ethynylphenyl Subunits with π-Extended Conjugation. Carbon Dendron Units. J Org Chem 2003; 68:8120-8. [PMID: 14535793 DOI: 10.1021/jo034972b] [Citation(s) in RCA: 52] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Nanometer-sized conjugated 1,4- and 1,3,5-ethynylphenyl oligomers were synthesized starting from 3,5-di(trimethylsilylethynyl)phenylacetylene and p-[3,5-di(trimethylsilylethynyl)-1-ethynylphenyl]phenyl acetylene by cross-coupling reaction with a convenient haloaryl derivative, catalyzed by palladium(II)/copper(I), in excellent yield. The terminal acetylenes were efficiently prepared by a specific protection-deprotection methodology. All ethynylphenyl homologues obtained show fluorescence emission, with the bathochromic shift of approximately 20 nm by each ethynylphenyl unit increasing the conjugate chain. Parallel conjugated ethynylphenyl chains were prepared through the insertion of a 1,5-naphthalene subunit, and the compounds exhibit fluorescence radiation emission.
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Affiliation(s)
- J Gonzalo Rodríguez
- Departamento Química Orgánica, Facultad de Ciencias, Universidad Autónoma, Cantoblanco, 28049 Madrid, Spain.
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1188
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Leadbeater NE, Marco M, Tominack BJ. First Examples of Transition-Metal Free Sonogashira-Type Couplings. Org Lett 2003; 5:3919-22. [PMID: 14535743 DOI: 10.1021/ol035485l] [Citation(s) in RCA: 107] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
[reaction: see text] We report here our observation that, using appropriate reaction conditions, the Sonogashira reaction can be performed without the need for transition-metal catalysts. Our approach involves the use of water as a solvent, poly(ethylene glycol) as a phase-transfer agent, and sodium hydroxide as a base. The methodology works, to differing extents, for aryl iodides and bromides.
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1189
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Lavigne JJ, Broughton DL, Wilson JN, Erdogan B, Bunz UHF. “Surfactochromic” Conjugated Polymers: Surfactant Effects on Sugar-Substituted PPEs. Macromolecules 2003. [DOI: 10.1021/ma0348167] [Citation(s) in RCA: 120] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- John J. Lavigne
- Department of Chemistry and Biochemistry,
University of
South Carolina, Columbia, South Carolina 29208, and
School of Chemistry and Biochemistry, Georgia Institute of
Technology, Atlanta, Georgia 30332
| | - Dana L. Broughton
- Department of Chemistry and Biochemistry,
University of
South Carolina, Columbia, South Carolina 29208, and
School of Chemistry and Biochemistry, Georgia Institute of
Technology, Atlanta, Georgia 30332
| | - James N. Wilson
- Department of Chemistry and Biochemistry,
University of
South Carolina, Columbia, South Carolina 29208, and
School of Chemistry and Biochemistry, Georgia Institute of
Technology, Atlanta, Georgia 30332
| | - Belma Erdogan
- Department of Chemistry and Biochemistry,
University of
South Carolina, Columbia, South Carolina 29208, and
School of Chemistry and Biochemistry, Georgia Institute of
Technology, Atlanta, Georgia 30332
| | - Uwe H. F. Bunz
- Department of Chemistry and Biochemistry,
University of
South Carolina, Columbia, South Carolina 29208, and
School of Chemistry and Biochemistry, Georgia Institute of
Technology, Atlanta, Georgia 30332
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1190
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1191
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Wagner M, Nuyken O. Benzyl Bromide Functionalized Poly(phenyleneethynylene)s: A Novel Approach toward Conjugated Polymers with a Well-Defined Chemical Reactivity. Macromolecules 2003. [DOI: 10.1021/ma0302311] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Martin Wagner
- Lehrstuhl für Makromolekulare Stoffe, Technische Universität München, Lichtenbergstrasse 4, D-85747 Garching b. München, Germany
| | - Oskar Nuyken
- Lehrstuhl für Makromolekulare Stoffe, Technische Universität München, Lichtenbergstrasse 4, D-85747 Garching b. München, Germany
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1192
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Rodrı́guez J, Tejedor J, Esquivias J, Dı́az C. Synthesis of carbon dendron nano-chains with π-extended conjugation based on linear 1,4-phenylethynyl and 1,5-naphthylethynyl subunits. Tetrahedron Lett 2003. [DOI: 10.1016/s0040-4039(03)01615-0] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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1193
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Morisaki Y, Fujimura F, Chujo Y. Synthesis and Properties of Novel σ−π-Conjugated Polymers with Alternating Organosilicon and [2.2]Paracyclophane Units in the Main Chain. Organometallics 2003. [DOI: 10.1021/om020808n] [Citation(s) in RCA: 60] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Yasuhiro Morisaki
- Department of Polymer Chemistry, Graduate School of Engineering, Kyoto University, Yoshida, Sakyo-ku, Kyoto 606-8501, Japan
| | - Futoshi Fujimura
- Department of Polymer Chemistry, Graduate School of Engineering, Kyoto University, Yoshida, Sakyo-ku, Kyoto 606-8501, Japan
| | - Yoshiki Chujo
- Department of Polymer Chemistry, Graduate School of Engineering, Kyoto University, Yoshida, Sakyo-ku, Kyoto 606-8501, Japan
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1194
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Xue C, Luo FT. Synthesis of oligo(p-phenylene–vinylene–thienylene)s as potential red light-emitting materials. Tetrahedron 2003. [DOI: 10.1016/s0040-4020(03)00783-x] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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1195
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Kaneko T, Makino T, Miyaji H, Onuma A, Teraguchi M, Aoki T. A poly(9,10-anthryleneethynylene)-based polyradical designed to be a ladder-like ferromagnetic spin coupling network. Polyhedron 2003. [DOI: 10.1016/s0277-5387(03)00251-1] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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1196
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Egbe DAM, Cornelia B, Nowotny J, Günther W, Klemm E. Investigation of the Photophysical and Electrochemical Properties of Alkoxy-Substituted Arylene−Ethynylene/Arylene−Vinylene Hybrid Polymers. Macromolecules 2003. [DOI: 10.1021/ma0301395] [Citation(s) in RCA: 64] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Daniel Ayuk Mbi Egbe
- Institut für Organische Chemie und Makromolekulare Chemie der Friedrich-Schiller-Universität Jena, Lessingstrasse 8, D-07743 Jena, Germany
| | - Bader Cornelia
- Institut für Organische Chemie und Makromolekulare Chemie der Friedrich-Schiller-Universität Jena, Lessingstrasse 8, D-07743 Jena, Germany
| | - Jürgen Nowotny
- Institut für Organische Chemie und Makromolekulare Chemie der Friedrich-Schiller-Universität Jena, Lessingstrasse 8, D-07743 Jena, Germany
| | - Wolfgang Günther
- Institut für Organische Chemie und Makromolekulare Chemie der Friedrich-Schiller-Universität Jena, Lessingstrasse 8, D-07743 Jena, Germany
| | - Elisabeth Klemm
- Institut für Organische Chemie und Makromolekulare Chemie der Friedrich-Schiller-Universität Jena, Lessingstrasse 8, D-07743 Jena, Germany
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1197
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Poly(salphenyleneethynylene)s: A New Class of Soluble, Conjugated, Metal-Containing Polymers. Macromolecules 2003. [DOI: 10.1021/ma034229l] [Citation(s) in RCA: 52] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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1198
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Rodrı́guez J, Esquivias J. Synthesis of nanostructures based on 1,4- and 1,3,5-phenylethynyl units with π-extended conjugation. Carbon networks dendrimer base units. Tetrahedron Lett 2003. [DOI: 10.1016/s0040-4039(03)01137-7] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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1199
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Affiliation(s)
- Ei-ichi Negishi
- Herbert C. Brown Laboratories of Chemistry, Purdue University, West Lafayette, Indiana 47907-2084, USA
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1200
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Morisaki Y, Chen H, Chujo Y. Synthesis and Properties of Conjugated Copolymer Based on Poly(p-phenylenevinylene) Containing Tricarbonyl(arene)chromium and Thiophene Units in the Main Chain. Polym J 2003. [DOI: 10.1295/polymj.35.446] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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