Browsing Chemistry by Submit Date
Now showing items 21-40 of 234
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Soft x-ray excited optical luminescence: Some recent applications
(2002-03)No abstract available. -
Electrochemical route for the fabrication of alkanethiolate-capped gold nanoparticles
(2003-03)No abstract available. -
Tailoring the local structure and electronic property of AuPd nanoparticles by selecting capping molecules.
(2010)No abstract available. -
X-ray studies of the structure and electronic behavior of alkanethiolate-capped gold nanoparticles: The interplay of size and surface effects
(2003-06)We report a study of the structure and electronic properties of a series of thiol-capped Au nanoparticles (NP) of nominal sizes of 1.6, 2.4, and 4.0 nm. Transmission electron microscopy, x-ray powder diffraction, x-ray ... -
Tuning the electronic behavior of Au nanoparticles with capping molecules
(2002-07)No abstract available. -
Fabrication of thiol-capped Pd nanoparticles: An electrochemical method
(2003-03)No abstract available. -
Microwave-accelerated synthesis of benzyl 3,5-dimethyl-pyrrole-2-carboxylate
(2006-12)Benzyl 3,5-dimethyl-pyrrole-2-carboxylate, a very useful pyrrole in porphyrin and dipyrromethene synthesis, can be synthesized via the Knorr-type reaction, but in low yield. Alternative routes to benzyl 3,5-dimethyl-pyrr ... -
Chiral molecules containing the pyrrole framework
(2010)This review summarizes strategies by which chiral pyrroles, both simple and complex, have been prepared: strategies include formation of the pyrrolic ring using starting materials appended with chirality, as well as the ... -
Synthesis of heteroleptic pyrrolide/bipyridyl complexes of ruthenium(II)
(2012-08)The synthesis and characterization of the first heteroleptic pyrrolide/2,2'-bipyridyl complexes of ruthenium(II) are reported. Pyrroles substituted at the 2-position with X = O functionality react with Ru(bipy)(2)Cl-2.2H(2)O ... -
Investigations regarding the utility of prodigiosenes to treat leukemia
(2013)Prodigiosenes, possessing a 4-methoxypyrrolyldipyrrin skeleton, are known for their anti-cancer activity. Structural modification of the C-ring resulted in a series of prodigiosenes that displayed promising activity against ... -
Synthesis and characterisation of the unsubstituted dipyrrin and 4,4-dichloro-4-bora-3a,4a-diaza-s-indacene: improved synthesis and functionalisation of the simplest BODIPY framework
(2013)An improved and scalable synthesis of the unsubstituted 4,4-difluoro-4-bora-3a,4a-diaza-s-indacene framework facilitates access to the previously unreported parent dipyrrin HCl salt, as well as 4,4-dichloro-4-bora-3a,4a- ... -
Cl-BODIPYs: a BODIPY class enabling facile beta-substitution
(2012-01)Cl-BODIPYs, synthesized in high yields from dipyrrins under air- and moisture-free conditions, are extremely facile to substitution at boron compared to their corresponding F-BODIPYs, opening up a new route to BODIPYs ... -
Conversion of F-BODIPYs to Cl-BODIPYs: Enhancing the Reactivity of F-BODIPYs
(2013-01)A new method for the synthesis of Cl-BODIPYs from F-BODIPYs is reported, merely requiring treatment of the F-BODIPY with boron trichloride. Cl-BODIPYs are exploited as synthetic intermediates generated in situ for the ... -
The first series of alkali dipyrrinato complexes
(2010-08)The first series of alkali dipyrrinato complexes is reported, encompassing lithium, sodium, and potassium salts of meso-unsubstituted and meso-aryl-substituted derivatives. By varying the substituents at the meso position, ... -
Synthesis of dipyrrins bearing chirality adjacent to the conjugated skeleton - Electron-poor pyrroles exhibit dramatically reduced nucleophilicity
(2008-10)With the aim of furthering our investigations into the asymmetric complexation of dipyrrinato ligands, a dipyrrin bearing a stereogenic centre directly adjacent to the conjugated skeleton was synthesized. The electron- ... -
Heteroleptic zinc dipyrromethene complexes
(2006-03)H-1 NMR spectroscopy has been used to study the complexation of a per-alkyl dipyrromethene with zinc acetate. An intermediate, assigned to be the heteroleptic Zn(dipyrromethene) (acetate) complex, is observed under titration ... -
Chloride anion transport and copper-mediated DNA cleavage by C-ring functionalized prodigiosenes
(2007)A new class of prodigiosenes with stability-enhancing functionalities appended to the C-ring were found to transport chloride anions through liposomal membranes, as well as to induce copper-mediated DNA cleavage. -
Investigations into the nucleophilic meso-substitution of F-BODIPYs and improvements to the synthesis of 4,4-difluoro-4-bora-3a,4a-diaza-s-indacene.
(2011)A series of three F-BODIPYs, with varying levels of steric crowding about the meso-position were selected to investigate nucleophilic meso-substitution of F-BODIPYs. The synthesis of one of these F-BODIPYs, 4,4-difluor ... -
Asymmetric oxidation of 2-(arylsulfenyl)pyrroles
(2008-07)The asymmetric oxidation of prochiral 2-(arylsulfenyl)pyrroles has been investigated. A marked electronic effect within the substrate significantly influenced the degree of enantioselectivity obtained, with very high enantio ...