- CYCLOHEXADIENE FULLERENE DERIVATIVES
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The invention relates to novel fullerene derivatives, to methods for their preparation and educts or intermediates used therein, to mixtures and formulations containing them, to the use of the fullerene derivatives, mixtures and formulations as organic semiconductors in, or for the preparation of, organic electronic (OE) devices, especially organic photovoltaic (OPV) devices and organic photodetectors (OPD), and to OE, OPV and OPD devices comprising, or being prepared from, these fullerene derivatives, mixtures or formulations.
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Page/Page column 79; 80; 87
(2015/03/28)
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- Suzuki-Miyaura reaction of chloroarenes using Pd(PPh3) 4 as catalyst
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The reactivity of a number of chloroarenes was investigated and chloro-nitroarenes were found to undergo facile arylation with Pd(PPh 3)4 / [Pd(PPh3)2Cl 2/n.PPh3] as catalyst. Furthermore, 4-chlorobenzaldehyde underwent arylation under the conditions, albeit with a higher catalyst loading.
- Thiemann, Thies,Tanaka, Yasuko,Hisaindee, Soleiman,Kaabi, Maitha
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experimental part
p. 34 - 38
(2010/06/16)
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- Arylation of chloroanthraquinones by surprisingly facile Suzuki-Miyaura cross-coupling reactions
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Chloroanthraquinones were found to undergo facile Suzuki-cross coupling with substituted phenyl boronic acids using a commercial catalyst Pd(PPh 3)4 and with Pd(PPh3)4 prepared in situ from Pd(PPh3)2Cl2 and PPh3.
- Thiemann, Thies,Tanaka, Yasuko,Iniesta, Jesus,Varghese, H. Tresa,Pannicker, C. Yohannan
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experimental part
p. 732 - 736
(2010/03/24)
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- Toward boronate ester mesogenic structures
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This article describes efforts toward the development of a new core for calamitic mesogens based upon the introduction of an extended heteroaromatic boroncontaining ring. A series of tri-catenar mesogenic boronate ester derivatives of the 2-phenyl-1,3,2-benzodioxaborole has been synthesized and characterized. The flat central core appeared to be a suitable feature for these derivatives to support anisotropic alignment. Additionally, these derivatives should possess an inherent dipole in the core. However, thermal analysis (polarized optical microscopy and differential scanning calorimetry) did not reveal any mesophases.
- Belloni, Maura,Manickam,Wang, Zehn-He,Preece, Jon A.
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- Synthesis and Properties of Liquid Crystalline 4,4 -Dialkoxy-2'-Methyl-p-Terphenyls
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A new series of laterally substituted terphenyl compounds, 4,4 -dialkoxy-2'-methyl-p-terphenyls (n = 1-12), were synthesized. Their liquid crystallinities were characterized by means of polarizing optical microscopy (POM), differential scanning calorimetry (DSC), and X-ray difraction (XRD). The influence of the length of the terminal alkoxy groups on the liquid crystalline behavior was investigated. It was found that the compounds with shorter end chains (n a smectic A mesophase is exhibited for those with longer end chains (9 = n = 12).
- Yu, Z. N.,Tu, H. L.,Wan, X. H.,Chen, X. F.,Zhou, Q. F.
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- The X-ray crystal structures and computational analysis of NH...π hydrogen bonded banana-shaped carbazole derivatives and thermal analysis of higher mesogenic homologues
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The synthesis of a series of banana-shaped mesogenic structures has been carried out, in which the bend unit is formed by the 3,6-substitution of carbazole by 4-alkoxyphenyl moieties. The crystal structures of the methoxy and propyloxy derivatives are reported with an analysis of the N-H...π interactions that are observed in the crystalline state. This analysis was aided by semi-empirical molecular orbital calculations. Additionally, the thermal analysis of the complete series has been carried out in order to investigate the phase properties of these materials. The 4-nonyloxyphenyl derivative displays two melting points by DSC and normal light microscopy, but yields non-birefringent liquids. The incorporation of photorefractive molecular units, such as carbazole. into anisotropic materials may offer many advantages over conventional electrical poling of photorefractive polymers.
- Belloni, Maura,Manickam,Ashton, Peter R.,Kariuki, Benson M.,Preece, Jon A.,Spencer, Neil,Wilkie, John
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