p-Diethynylbenzene-based molecular wires, Fe–C C-p-C6H2X2–C C–Fe [Fe= Fe(η5-C5Me5)(dppe)]: Synthesis, substituent effects and unexpected formation of benzodifuran complex
摘要:
A series of p-diethynylbenzene- based molecular wires, Fe-C C-p-C6H2X2-C C-Fe (3) (Fe = FeCp* (dppe)), is prepared and their wire-like performance is estimated on the basis of the K-C and V-ab values. It has been revealed that electron-donating substituents (X) improve the performance. The benzodifuran complex 4 unexpectedly formed from the derivative with X = OH shows the performance comparable to 3. (C) 2009 Elsevier B.V. All rights reserved.
A novel class of rod-coil type-organoboron polymers with p-phenylene-ethynylene as the rod segment and long alkyl chain (decyl group) as coil segment has been prepared from a Sonogashira-Hagihara coupling reaction of a BODIPY-based monomer having bis-iodophenyl and decyl groups with diyne monomers, 1,4-diethynylbenzene (a), 1,4-diethynyl-2,5bis(trifluoromethyl)benzene (b), and 2,7-diethynyl-9,9-dihexyl-9H-fluorene (c). The characterization by means of scanning electron microscopy (SEM) and transmission electron microscopy (TEM) revealed the strong tendency of the obtained polymers, 2a, 2b, and 2c, to self-assemble into particles in solution and as-casted films on a mu m-nm scale. Especially, 2a showed the presence of nm-sized particles and mu m-sized fiber-like structures formed by aggregation of each particle. Further, in CHCl3, the gelation of 2a by three-dimensional aggregation of each fiber was observed at room temperature after 24 h. Their luminescent properties showed high energy transfer efficiency from pi-conjugated polymer linkers to BODIPY moieties (Phi(F) > 71%).
Synthesis, Characterization, and Substituent Effects of Binuclear Ruthenium Vinyl Complexes [RuCl(CO)(PMe<sub>3</sub>)<sub>3</sub>]<sub>2</sub>(μ-CH═CH−Ar−CH═CH)
A series of binuclear ruthenium vinyl complexes [RuCl(CO)(PMe3)(3)](2)(mu-CH=CH-Ar-CH=CH) (Ar = C6H4 (6a), C6H3CH3 (6b), C6H3OCH3 (6c), C6H3F (6d), C6H3Cl (6e), C6H3Br (6f), C6H3CN (6g), C6H3NO2 (6h), C6H2(CH3)(2)-2,5 (6i), C6H2(OCH3)(2)-2,5 (6i), C6H2(F)(2)-2,5 (6k), C6H2(CF3)(2)-2,5 (6l), and C6H3CF3 (6m)) have been prepared. The respective products have been characterized by elemental analyses, NMR spectrometry, and UV/vis spectrophotometry. The structures of 6h, 6i, and 6j have been established by X-ray crystallography. Electrochemical studies have revealed that intermetallic electron communication between the two Ru centers may be fine-tuned by modification of the bridging spacers, that is, by introducing one or two substituent groups on the 1,4-diethenylphenylene bridge. Electron-releasing substituents have been found to facilitate electron communication between the two metal centers.
Highly Hydrophobic Isoreticular Porous Metal-Organic Frameworks for the Capture of Harmful Volatile Organic Compounds
作者:Natalia M. Padial、Elsa Quartapelle Procopio、Carmen Montoro、Elena López、J. Enrique Oltra、Valentina Colombo、Angelo Maspero、Norberto Masciocchi、Simona Galli、Irena Senkovska、Stefan Kaskel、Elisa Barea、Jorge A. R. Navarro
DOI:10.1002/anie.201303484
日期:2013.8.5
Tunable hydrophobicity: Efficient air filters for the protection against chemical warfare agents might be achieved by surface functionalization of the pores in robust metal–organicframeworks (MOFs) with fluoroalkyl residues and the precise control of their pore size (see picture). These MOFs captureharmfulvolatileorganiccompounds even under extremely moist conditions (80 % relative humidity).
p-Diethynylbenzene-based molecular wires, Fe–C C-p-C6H2X2–C C–Fe [Fe= Fe(η5-C5Me5)(dppe)]: Synthesis, substituent effects and unexpected formation of benzodifuran complex
作者:Yumi Matsuura、Yuya Tanaka、Munetaka Akita
DOI:10.1016/j.jorganchem.2009.01.019
日期:2009.5
A series of p-diethynylbenzene- based molecular wires, Fe-C C-p-C6H2X2-C C-Fe (3) (Fe = FeCp* (dppe)), is prepared and their wire-like performance is estimated on the basis of the K-C and V-ab values. It has been revealed that electron-donating substituents (X) improve the performance. The benzodifuran complex 4 unexpectedly formed from the derivative with X = OH shows the performance comparable to 3. (C) 2009 Elsevier B.V. All rights reserved.