Chemistry (Scholarly Publications): Recent submissions
Now showing items 841-860 of 931
-
A photoswitchable Zn (II) selective spiropyran-based sensor
(2010)A spiropyran-based fluorescent and photoregenerable receptor that is selective towards zinc(II) ions over a series of biologically and environmentally relevant cations has been designed and synthesized. The complex formation ... -
ps-TRIR Covers All the Bases - Recent Advances in the Use of Transient IR for the Detection of Ultrafast Species in DNA
(2009)Recent developments of the picosecond transient absorption infrared technique and its ability to elucidate the nature and kinetic behaviour of transient species formed upon pulsed laser excitation of nucleic acids are described. -
Concise synthesis and CDK/GSK inhibitory activity of the missing 9-azapaullones
(2010)A remarkably concise, chromatography-free route to the parent compound of the paullone family of cyclin-dependent kinase (CDK) inhibitors is reported. A similar strategy allowed the synthesis of the hitherto missing ... -
Effect of solvent and dispersant on the bundle dissociation of single-walled carbon nanotube
(2005)Single-wall carbon nanotubes (SWCNT) are severely restricted in their applications, as they exist in rope-like bundles. Recently, J. Coleman et al. demonstrated a spectroscopic method to monitor bundle dissociation in low ... -
Flexible, Transparent, Conducting Films of Randomly Stacked Graphene from Surfactant-Stabilized, Oxide-Free Graphene Dispersions
(2010)We have exfoliated graphite in water to give dispersions of mono and few-layer graphene stabilised by surfactant. These dispersions can be used to form thin, disordered films of randomly stacked, oxide-free, few-layer ... -
Luminescence anion sensing via modulation of MLCT emission from a naphthalimide-Ru(II)-polypyridyl complex
(2010)The selective sensing of fluoride (F?; an important breakdown product of some chemical warfare agents such as sarin) was achieved by observing quenching in the Metal to Ligand Charge Transfer (MLCT) emission of the ... -
Electronic structure of mixed-valence silver oxide AgO from hybrid density-functional theory
(2010)Mixed-valence AgO has attracted attention due to its utility in battery technologies. Despite this, a nanoscopic understanding of its electronic structure has been lacking and there has been considerable controversy about ... -
Anomalous magnetic field effects during pulsed injection metal-organic chemical vapor deposition of magnetite films
(2010)We report on large external magnetic field effects during pulsed injection metal-organic chemical vapor deposition of magnetite films on MgO 001 . The application of a 1 T field during the growth process significantly ... -
Organische Chemie 2009
(GDCh, 2010)Organik von A wie Agrochemie bis Z wie (Solar-)Zelle: die ersten ersten Cycloadditionsreaktionen angeregter Photosubstrate, das erste Beispiel eines molekularen, schwarzen Porphyrins, ein neuer Weg zur Direktoxidation ... -
Highly substituted 2,3,7,8,12,13,17,18-octaethylporphyrins with meso aryl residues
(2010)Highly substituted porphyrin-bearing meso aryl groups are useful compounds for optical applications and for studies on the interrelationship between the substituent pattern, macrocycle conformation and physical properties. ... -
Ni(II) porphine nanolines grown on a Ag(111) surface at room temperature
(2009)The room temperature growth and ordering of (porphyrinato)nickel(II) (or nickel(II) porphine, NiP) molecules on the Ag(111) surface have been investigated using scanning tunnelling microscopy (STM) and low-energy electron ... -
Synthesis of porphyryl boronates with (un)saturated side-chains
(2008)Porphyrins with (un)saturated side?chains containing boron residues were developed as synthons for porphyrin functionalization. Porphyrins with mono and bis-substituted unsaturated boronyl residues were prepared in good ... -
Organische Chemie 2007
(GDCh, 2008)Organische Chemie ? bunt gemischt: Organokatalyse mit Radikalen; mesoporose kovalente 3D Strukturen; provirale DNA, herausgeschnitten aus dem Genom von HIV-infizierten humanen Zellen; reversible Photoreaktionen im ... -
Syntheses, Structure, Properties, and Chemistry of 1,1-Di(pyrrolyl)ethenes
(Royal Society of Chemistry, 1994)Reaction of a 2-unsubstituted pyrrole with acetic anhydride and stannic chloride unexpectedly promotes self-condensation to give symmetrical di( pyrroly1)ethene as a side-product in &lo% yield, but overall yields of these ... -
A Novel 2,18-Bridged Biliverdin Derivative
(Royal Society of Chemistry, 1993)Base-catalysed dehydrohalogenation of a 3,18-bis(2-chloroethyl)biliverdin 1 affords a novel 3-vinylbiliverdin 3 in which the 2- and 18-positions are bridged with a propano-tether; the structure of 3 has been established ... -
Axial Coordination Phenomena in Highly Substituted Porphyrins. Crystal Structure of the Polymeric (2,3,7,8,12,13,17,18-Octaethyl-5,10,15,20-tetranitroporphyrinato)zinc(II), [{Zn(oetnp)}n]
(Royal Society of Chemistry, 1994)The polymeric structure of the sterically strained and non-planar porphyrin [{ZnIIoetnp}n] is determined by X-ray crystallography; polymerization is achieved by utilization of the nitro-groups for axial ligation to the ... -
Crystal Structure of a Remarkably Ruffled Nonplanar Porphyrin - (Pyridine)(5,10,15,20-Tetra(tert-butyl)porphyrinato)zinc(II)
(Royal Society of Chemistry, 1995)The title compound presents the first example of a sterically ruffled porphyrin bearing only meso substituents; the degree of ruffling is severe, with Cm-displacements of up to 1 ?. -
Synthesis and crystal structures of cofacial bischlorins - Octaethylchlorin-based structural models for the special pair in photosynthesis
(Royal Society of Chemistry, 1996)McMurry coupling of metalloformyloctaethylchlorins yields the first cofacial bischlorin with structural characteristics mimicking those of the special pair in photosynthesis. -
Structural Evidence for Nonplanar Keto- and Planar Enol-Forms of Oxophlorins
(Royal Society of Chemistry, 1992)The first structural investigation of a zinc(II) and a free-base oxophlorin reveals considerable conformational differences between the keto-(1) and enol-form (2) of oxophlorins. -
Bis(methanol-O)(2,3,7,8,12,13,17,18-octaethylporphyrinato-N,N',N",N'")-iron(III) Perchlorate Bis(methanol) Solvate, [Fe(III)oep(HOCH3)2][ClO4].2CH3OH
(International Union of Crystallography, 1996)Simple treatment of [FeIII(oep)Cl] (where oep is octaethylporphyrin) with dilute perchloric acid leads to facile preparation of the title compound, [Fe(C36H44N4)(CH4O)2](ClO4).2CH4O. The structure consists of discrete ...
