Results 81 to 90 of about 35,154 (267)
(Sila)Difluoromethylation of Fluorenyllithium with CF3H and CF3TMS
SynOpen, 2018 Difluoromethylation of the C9-H site of the fluorene ring using lithium base and fluoroform (CF3H), which is one of the most cost-effective difluoromethylating reagents, is attained to give difluoromethylated fluorenes with an all-carbon quaternary ...
Kenichi Maruyama +2 more
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eXPRESS Polymer Letters, 2020 A series of novel quaternary copolymerized thermoplastic polyimides were successfully prepared with asymmetric diahydride: 3,4′-oxydiphthalic anhydride (a-ODPA) and symmetric anhydride: 4,4′-oxydiphthalicanhydride (s-ODPA), 9,9′-bis(4-aminophenyl ...
X. W. Cao, C. Wei, G. J. He, X. Liu
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, 2005 In this paper we consider the essential electronic excited states in parallel chains of semiconducting polymers that are currently being explored for photovoltaic and light-emitting diode applications.
Eric R. Bittner +3 more
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9-Chloromethyl-9-[(9H-fluoren-9-yl)methyl]-9H-fluorene [PDF]
Acta Crystallographica Section E Structure Reports Online, 2008 In the title compound, C(28)H(21)Cl, the dihedral angle between the two fluorene ring systems is 71.97 (4)°. There is an intra-molecular C-H⋯Cl hydrogen bond. In the crystal structure, the centroid-to-centroid distance between stacked fluorene ring systems is ca 4.22 Å, which indicates that there are no π-π stacking inter-actions between them.
Shen, Qun +3 more
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Isolation und Reaktivtät eines quadratisch‐planaren Trisamidosilans
Angewandte Chemie, EarlyView.Wir berichten über die Synthese und umfassende Charakterisierung eines quadratisch‐planaren Si(+IV)‐Hydrids, das von einem unsymmetrischen, trianionischen und dearomatisierten N,N,N‐Pincerliganden stabilisiert wird. Dieses System ermöglicht eine Element–Liganden‐kooperative Reaktivität als Alternative zur siliciumzentrierten Redoxchemie und erweitert ...
David M. J. Krengel +5 more
wiley +1 more source
The electronic structure of free radical 9-fluorenyl within the framework of QTAIM
Физико-химические аспекты изучения кластеров, наноструктур и наноматериаловThe paper presents the results of studying the influence of free valence on the electronic structure of 9-fuorenyl radical in comparison with the fluorene molecule.
E.M. Chernova +2 more
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Transformation of Substituted Fluorenes and Fluorene Analogs by Pseudomonas sp. Strain F274 [PDF]
Applied and Environmental Microbiology, 1995 Pseudomonas sp. strain F274, previously shown to catabolize fluorene via fluorenone and its angular dioxygenation, 2(prm1),3(prm1)-dihydroxy-2-carboxybiphenyl, phthalate, and protocatechuate, was examined for its ability to transform substituted fluorenes and S- and N-heterocyclic analogs.
M, Grifoll, S A, Selifonov, P J, Chapman
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One-Dimensional Fluorene-Based Co(II) Phosphonate Co(H2O)2PO3C–C12H9·H2O: Structure and Magnetism
Inorganics, 2018 A new Co(II) phosphonate, Co(H2O)2PO3C–C12H9·H2O, has been synthesized under hydrothermal conditions. The monoclinic P21/c structure of this organic–inorganic hybrid consists of isolated perovskite-type chains of corner-shared CoO4(H2O)
Clarisse Bloyet +7 more
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Angewandte Chemie, EarlyView.Wir berichten, dass nicht‐zytotoxische, polyfluoralkylierte zellpenetrierende Peptide (CPPs) als CPP‐Additive die intrazelluläre Proteinaufnahme signifikant verbessern, indem sie die Membranverweildauer der CPP‐Additive erhöhen. Durch die Kombination von biophysikalischen Experimenten und Molekulardynamiksimulationen zeigen wir zudem, dass die ...
Sarah Hansen +10 more
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High Fluorescent Porphyrin-PAMAM-Fluorene Dendrimers
Molecules, 2015 Two new classes of dendrimers bearing 8 and 32 fluorene donor groups have been synthesized. The first and second generations of these porphyrin-PAMAM-fluorene dendrimers were characterized by 1H-NMR, 13C-NMR, FTIR, UV-vis spectroscopy, elemental analyses
Karla I. Garfias-Gonzalez +6 more
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