Modern bioassays using metal chelates as luminescent probes
P. G. Sammes and G. Yahioglu, Nat. Prod. Rep., 1996, 13, 1 DOI: 10.1039/NP9961300001
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Conformational Properties of Nickel(II) Octaethylporphyrin in Solution. 1. Resonance Excitation Profiles and Temperature Dependence of Structure-Sensitive Raman Lines
We have measured polarized resonance Raman spectra of nickel(II) octaethylporphyrin in CS 2 and CH 2 Cl 2 solution at different excitation wavelengths (430−580 nm) and temperatures (190−310 K). The analysis of the spectra revealed that the structure-sensitive Raman lines ν 19 and ν 10 can be decomposed consistently in…
Novel Tungsten, Molybdenum, and Vanadium Oxides Containing Surfactant Ions
Hydrothermal reaction of tungstic acid, molybdic acid, and vanadium pentoxide with the surfactant template dodecyltrimethylammonium bromide (DTABr) yielded one compound with a Keggin type structure, [C 12 H 25 N(CH 3 ) 3 ] 6 (H 2 W 12 O 40 )· x H 2 O, and two new layered compounds, [C 12 H 25 N(CH 3 ) 3 ] 0.5 (MoO 3.2…
Binding of Porphyrins in Cyclodextrin Dimers
ADVERTISEMENT RETURN TO ISSUEPREVCommunicationNEXTBinding of Porphyrins in Cyclodextrin DimersFokke Venema, Alan E. Rowan, and Roeland J. M. NolteView Author Information Department of Organic Chemistry, NSR Center University of Nijmegen, Toernooiveld 6525 ED Nijmegen, The Netherlands Cite this: J. Am. Chem. Soc. 1996,…
Atomic Force Microscopy Studies of Surface Morphology and Growth Kinetics in Thaumatin Crystallization
Surface morphology and growth kinetics of thaumatin crystals in the supersaturation range σ = 0−1.65 were investigated using in situ atomic force microscopy (AFM). At σ < 0.7 growth steps were produced both by screw dislocations and two-dimensional nuclei. At higher supersaturations growth proceeded exclusively by two…
Enzymatic Degradation of Single Crystals of Bacterial and Synthetic Poly(β-hydroxybutyrate)
Lamellar single crystals of both natural poly[( R )-β-hydroxybutyrate], PHB, and synthetic poly[( R, S )-β-hydroxybutyrate] of various tacticities were degraded using enzymes isolated from the fungus Aspergillus fumigatus and the bacterium Pseudomonas lemoignei . Degradation was monitored by both turbidimetric and tit…
Self-assembly of a multi-porphyrin supramolecular macrocycle by hydrogen bond molecular recognition
Three triaminotriazine units bearing two appended porphyrins undergo self-assembly through multiple hydrogen-bonding with three complementary dialkylbarbituric acids yielding a supramolecular macrocycle containing six porphyrins.
Aryl Ether Dendrimers with an Interior Metalloporphyrin Functionality as a Spectroscopic Probe: Interpenetrating Interaction with Dendritic Imidazoles
ADVERTISEMENT RETURN TO ISSUEPREVCommunication to the...Communication to the EditorNEXTAryl Ether Dendrimers with an Interior Metalloporphyrin Functionality as a Spectroscopic Probe: Interpenetrating Interaction with Dendritic ImidazolesYoriko Tomoyose, Dong-Lin Jiang, Ren-Hua Jin, Takuzo Aida, Takashi Yamashita, Kazu…
Mesoporous phases based on SnO2 and TiO2
A hexagonal mesoporous phase based on SnO2 is synthesized for the first time by using an anionic surfactant; hexagonal phases of TiO2 are prepared with neutral amine surfactants.
A dendritic iron porphyrin as a novel haemoprotein mimic: effects of the dendrimer cage on dioxygen-binding activity
An iron(II) porphyrin 1-methylimidazole (mim) complex covalently encapsulated within a large aryl ether dendritic cage, FeII(mim)2L5, displays reversible dioxygen-binding activity, in which the dioxygen adduct survives over a period of months even in the presence of water, and exhibits a half-life of 50 h upon exposur…
Inter- and Intralayer Energy Transfer in Zirconium Phosphate−Poly(allylamine hydrochloride) Multilayers: An Efficient Photon Antenna and a Spectroscopic Ruler for Self-Assembled Thin Films
ADVERTISEMENT RETURN TO ISSUEPREVCommunicationNEXTInter- and Intralayer Energy Transfer in Zirconium Phosphate−Poly(allylamine hydrochloride) Multilayers: An Efficient Photon Antenna and a Spectroscopic Ruler for Self-Assembled Thin FilmsDavid M. Kaschak and Thomas E. MalloukView Author Information Department of Chemi…
Synthesis and deorganization of an aluminium–based dodecyl sulfate mesophase with a hexagonal structure
An aluminium-based dodecyl sulfate mesophase with a hexagonal structure is synthesized by the homogeneous precipitation method using urea and is thermally deorganized into a hexagonal but less ordered framework structure with a d spacing of 3.4 nm.
Spectra and Reactivity of Methoxyoligothiophene Cation Radicals
A set of α-coupled oligothiophenes, dimer through hexamer, was studied. Each oligomer was terminated with two methyl groups and was substituted with two or four methoxy groups. Electrochemical studies showed that methoxy groups substituted at “inside” β-positions on the terminal rings (positions toward the center of t…
Structure of the Transition States and Intermediates Formed in the Water-Exchange of Metal Hexaaqua Ions of the First Transition Series
The structures of the transition states and intermediates formed in the water-exchange of hexaaqua complexes of the first row transition elements have been computed with ab initio methods at the Hartree−Fock or CAS-SCF level. As an approximation, water molecules in the second coordination sphere except one, bulk water…
Biomimetic Mineralization in and on Polymers
Biological mineralization leads to the development of finely scaled, highly controlled inorganic precipitates in organic matrixes. It was initially thought that this control was mainly exercised through lattice-matching epitaxy between the protein or polysaccharide matrix and the mineral. We discuss the importance of…
Subphthalocyanines: Novel Targets for Remarkable Second-Order Optical Nonlinearities
ADVERTISEMENT RETURN TO ISSUEPREVCommunicationNEXTSubphthalocyanines: Novel Targets for Remarkable Second-Order Optical NonlinearitiesA. Sastre, T. Torres, M. A. Díaz-García, F. Agulló-López, C. Dhenaut, S. Brasselet, I. Ledoux, and J. ZyssView Author Information Departments of Organic Chemistry C-I and Physics of Mat…
Protonated Sapphyrins. Highly Effective Phosphate Receptors
The phosphate anion chelation properties of several sapphyrin derivatives, namely 3,12,13,22-tetraethyl-8,17-bis[bis(hydroxyethyl)amino)carbonylethyl]-2,7,18,23-tetramethylsapphyrin ( 1 ), 3,12,13,22-tetraethyl-2,7,18,23-tetramethyl-8,17-bis(hydroxypropyl)sapphyrin ( 2 ), and 3,8,12,13,17,22-hexaethyl-2,7,18,23-tetram…
π-Acid Ligands in Iron(III) Porphyrinates. Characterization of Low-Spin Bis(tert-butylisocyanide)(porphyrinato)iron(III) Complexes Having (dxz,dyz)4(dxy)1 Ground States
The synthesis and characterization of isocyanide complexes of (porphyrinato)iron(III) species, [(Porph)Fe( t -BuNC) 2 ]ClO 4, Porph = OEP, TPP, are reported. The crystal structures of [(TPP)Fe( t -BuNC) 2 ]ClO 4 and [(OEP)Fe( t -BuNC) 2 ]ClO 4 have been determined. Consistent with the expected effect from the strong π…
Crystal Structures and Magnetic Properties of Novel [LnIIICuII4] (Ln = Gd, Dy, Ho) Pentanuclear Complexes. Topology and Ferromagnetic Interaction in the LnIII−CuII Pair
The first pentanuclear complexes of formula {Dy[Cu(apox)](2)[Cu(apox)(H(2)O)](2)}[ClO(4)](3).7H(2)O (1), {Ho[Cu(apox)][Cu(apox)(H(2)O)](3)}[PF(6)](3).4.5H(2)O (2), {Gd[Cu(apox)](2)[Cu(apox)(H(2)O)](2)}[ClO(4)](3).7H(2)O (3) and {Gd[Cu(apox)][Cu(apox) (H(2)O)](3)}[PF(6)](3).4.5H(2)O (4) (H(2)apox = N,N'-bis(3-aminoprop…
Rapid Catalytic Oxygenation of Hydrocarbons by Ruthenium Pentafluorophenylporphyrin Complexes: Evidence for the Involvement of a Ru(III) Intermediate
ADVERTISEMENT RETURN TO ISSUEPREVCommunicationNEXTRapid Catalytic Oxygenation of Hydrocarbons by Ruthenium Pentafluorophenylporphyrin Complexes: Evidence for the Involvement of a Ru(III) IntermediateJohn T. Groves, Marcella Bonchio, Tommaso Carofiglio, and Kirill ShalyaevView Author Information Department of Chemistry…