Organometallic modification approach to control of polymer properties: a soluble, liquid crystalline, .pi.-complexed aromatic polyamide

Dembek, Alexa A.; Burch, R.; Feiring, Andrew E.

doi:10.1021/ja00058a092

Cited by 78 publications

(40 citation statements)

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“…[227] Nach Simon et al verfügen Lutetium-Phthalocyanin-Derivate über interessante magnetische Eigenschaften. [228] Obwohl die Chemie der (h 6 -Aren)tricarbonylchromKomplexe gut untersucht ist und über einige calamitische Derivate berichtet wurde, [229] sind nur wenige diskotische Arenchromkomplexe bekannt. Deschenaux und Levelut et al beschrieben einen interessanten Wechsel der mesomorphen Eigenschaften von 143 beim Komplexieren mit der {Cr(CO) 3 }-Einheit (Schema 57).…”

Section: Aufsätzeunclassified

Diskotische Flüssigkristalle: Von der maßgeschneiderten Synthese zur Kunststoffelektronik

et al. 2007

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Die meisten Menschen verbinden mit dem Begriff Flüssigkristalle sofort die Displays von Laptop‐Computern, Mobiltelefonen, Digitalkameras und anderen elektronischen Geräten. Im Unterschied zu ihren stäbchenförmigen (calamitischen) Verwandten, die erstmals 1907 von Vorländer beschrieben wurden, bieten aber die 1977 von Chandrasekhar entdeckten scheibenförmigen (diskotischen) Flüssigkristalle andere vielversprechende Verwendungsmöglichkeiten. Ihre einzigartige Anordnung in columnaren Mesophasen macht sie zu idealen Kandidaten für molekulare Drähte in vielen optischen und elektronischen Geräten, beispielsweise in Photokopierern, Laserdruckern, Solarzellen, organischen Leuchtdioden und Feldeffekttransistoren oder zur holographischen Datenspeicherung. Einer Übersicht über die verschiedenen Mesophasentypen und Charakterisierungsmethoden columnarer Flüssigkristalle folgen ausgewählte Beispiele aus den Hauptklassen columnarer Mesogene unter besonderer Berücksichtigung effizienter Syntheseverfahren, mesomorpher Eigenschaften und der für Anwendungen relevanten physikalischen Eigenschaften der Flüssigkristalle. Abschließend werden Anwendungsbeispiele und Perspektiven für einen Einsatz in den Materialwissenschaften und der molekularen Elektronik vorgestellt.

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Section: Aufsätzeunclassified

Diskotische Flüssigkristalle: Von der maßgeschneiderten Synthese zur Kunststoffelektronik

et al. 2007

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“…The ester derivatives 1 and 3 were obtained by heating a mixture of Cr(CO) 6 and the corresponding esters in di-n-butyl ether/tetrahydrofuran (THF) for about 16 (Figs. 1-4).…”

Section: Resultsmentioning

confidence: 99%

“…They have found applications in asymmetric synthesis [7], catalysis [8,9], Fourier transform infrared spectroscopy (FTIR)-readable molecular sensors [10], and for the preparation of non-linear optic (NLO) materials [11]. Moreover, [(η 6 -arene)chromium tricarbonyl] complexes were used to form bimetallic complexes [12,13], mesomorphic materials [14], polymers [15,16], and macrocycles [17]. Recently, Long and Kaye [18] reported on the synthesis of [Zn 4 O{(1,4-benzenedicarboxylate)Cr(CO) 3 ], which is a porous metal organic framework.…”

Section: Introductionmentioning

confidence: 99%

Hydrogen bonding networks in [(η⁶‐arene)Cr(CO)₃] complexes

Murugesapandian¹,

Roesky²

2011

Heteroatom Chemistry

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The four different [(η6‐arene)chromium tricarbonyl] complexes [(η6‐C6H5CH2COOH) Cr(CO)3], [{η6‐(1,2‐C6H4(NH2)COOEt)}Cr(CO)3], [η6 ‐{2,6‐C6H4(i‐Pr)2NH2}Cr(CO)3], and [{η6 ‐(1,4‐C6H4(NH2)CH3)}Cr(CO)3] were synthesized and structurally characterized by single crystal X‐ray diffraction. All compounds form hydrogen bonds in the solid state, leading to dimeric or polymeric networks. The hydrogen bonds are an essential part of the network. The connectivity is influenced by the groups on which the protons are bound (COOH vs. NH2) and by the steric demand of the ligand. © 2011 Wiley Periodicals, Inc. Heteroatom Chem 22:294–300, 2011; View this article online at http://wileyonlinelibrary.com. DOI 10.1002/hc.20679

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“…It was shown in 1990 that (benzoic acid)tricarbonylchromium and its derivatives form extended arrays in which the molecules are linked by hydrogen bonds. [7,8] Moreover, [(η 6 -arene)tricarbonylchromium] complexes have been used to form bimetallic complexes, [14,15] mesomorphic materials, [16] polymers, [17,18] macrocycles, [19] and receptors. [20] Recently, Kaye 3 }], which is a porous metal-organic framework.…”

Section: Introductionmentioning

confidence: 99%

Synthesis and Structures of Cadmium(II) Complexes with (η⁶‐Benzenecarboxylate)tricarbonylchromium

Murugesapandian

Roesky

2011

Eur J Inorg Chem

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The reaction of (benzoic acid)tricarbonylchromium [(η6‐C6H5COOH)Cr(CO)3] with cadmium acetate in methanol or DMF led to the formation of the dinuclear cadmium compounds [Cd2{(η6‐C6H5COO)Cr(CO)3}4(MeOH)4] (1) or [Cd2{(η6‐C6H5COO)Cr(CO)3}4(DMF)4] (2) containing four organometallic ligands with four methanol or DMF molecules coordinated to the cadmium atoms. The reaction of (benzoic acid)tricarbonylchromium [(η6‐C6H5COOH)Cr(CO)3] and cadmium acetate with 1,10‐phenanthroline (1,10‐phen) afforded the dinuclear cadmium complex [Cd2{(η6‐C6H5COO)Cr(CO)3}4(1,10‐phen)2] (3) with two 1,10‐phenanthroline and four organometallic ligands. The reaction of (benzoic acid)tricarbonylchromium [(η6‐C6H5COOH)Cr(CO)3] with cadmium acetate in the presence of 4,4′‐bipyridine (4,4′‐bipy) led to the one‐dimensional coordination polymer [Cd2{(η6‐C6H5COO)Cr(CO)3}4(4,4′‐bipy)2·3DMF]n (4) containing a dinuclear cadmium complex as a repeating unit. The solid‐state structures of all the compounds were determined by single‐crystal X‐ray diffraction.

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Organometallic modification approach to control of polymer properties: a soluble, liquid crystalline, .pi.-complexed aromatic polyamide

Cited by 78 publications

References 2 publications

Diskotische Flüssigkristalle: Von der maßgeschneiderten Synthese zur Kunststoffelektronik

Diskotische Flüssigkristalle: Von der maßgeschneiderten Synthese zur Kunststoffelektronik

Hydrogen bonding networks in [(η⁶‐arene)Cr(CO)₃] complexes

Synthesis and Structures of Cadmium(II) Complexes with (η⁶‐Benzenecarboxylate)tricarbonylchromium

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Organometallic modification approach to control of polymer properties: a soluble, liquid crystalline, .pi.-complexed aromatic polyamide

Cited by 78 publications

References 2 publications

Diskotische Flüssigkristalle: Von der maßgeschneiderten Synthese zur Kunststoffelektronik

Diskotische Flüssigkristalle: Von der maßgeschneiderten Synthese zur Kunststoffelektronik

Hydrogen bonding networks in [(η6‐arene)Cr(CO)3] complexes

Synthesis and Structures of Cadmium(II) Complexes with (η6‐Benzenecarboxylate)tricarbonylchromium

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Product

Resources

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Hydrogen bonding networks in [(η⁶‐arene)Cr(CO)₃] complexes

Synthesis and Structures of Cadmium(II) Complexes with (η⁶‐Benzenecarboxylate)tricarbonylchromium