MoSe2 has been encapsulated with a variety of guest species. This was achieved by first treating the MoSe2 with an excess of n-BuLi to form the lithiated phase of MoSe2 (LixMoSe2). The LixMoSe2 exfoliates readily in water or NMF to yield single layers of MoSe2. Addition of solutions of polymers, org...

C-60 acts as a mechanistic probe for the formation of carbene, diazo compound, and for the rearranged product via the excited state in the photolysis of 3-chloro-3-isopropyldiazirine and 3-chloro-3-chloromethyldiazirine. The carbene adds to C-60 to form methanofullerene, whereas the diazo compound a...

Gorgonian corals have proven to be a prolific source of a variety of biologically active terpenes. Corals of the genus Plexaurella are known to be the source of a diverse array of sesquiterpenes, and past reports have indicated variability in terpene content. This study involved an examination of th...

The effects of continuous passive motion (CPM) on nerve regeneration following nerve repair were investigated. In 26 rabbits, the medial popliteal nerve was transected and microsurgically repaired. Half of the animals were treated with cast immobilization and the rest with 70 degrees arc CPM. Both t...

The diketopiperazine of DOPA was synthesized in high yield from the diketopiperazine of tyrosine using PC12 cell lysate, which expresses high levels of tyrosine hydroxylase. This represents the first use of this enzyme to prepare DOPA-containing peptides.

The fluorescence enhancement of the probe molecule 1-anilino-8-naphthalenesulfonate (ANS) by a number of modified beta-cyclodextrins has been studied. Alkyl-and hydroxyalkyl-substituted beta-cyclodextrins show significantly greater enhancement of ANS fluorescence than does the parent unmodified beta...

Abstract: This paper describes the host properties of a new cucurbit[6]uril analogue, studied by fluorescence and 1H NMR spectroscopy. This host has an elongated cavity with oval-shaped portals. It is intrinsically fluorescent, and more importantly, this fluorescence is sensitive to guest encapsulat...

This study examined the symbiotic microbiota of the hexacoral Cirrhipathes lutkeni using traditional plate culture, fluorescence in situ hybridization ( FISH) and 16S rDNA characterization. FISH counts for the whole coral (holobiont) showed a major presence of gamma-Proteobacteria (22%) and Actinoba...

Addition of hydroxypropyl-beta-cyclodextrin to o-phthalaldehyde (OPA)-amino acid-thiol reaction mixtures is shown to cause significant enhancement of the fluorescence of the isoindole product for a wide range of amino acids, with the largest effects observed in the cases of glycine and lysine. The l...

Polyaniline (PANI), poly(N-methyl aniline) (PMA), poly(ethyl aniline) (PEA) and poly(propyl aniline) (PPA) were synthesized in their salt form, and then characterized by FT-IR spectroscopy and charge transport measurements. The solubility of the polymers was tested in a variety of solvents and N-met...

Abstract: 1,2-disubstituted cyclopentadienyl diimine anions are examples of extended -systems that bind metals through the nitrogen atoms. Reaction of Cp2Mg with benzonitrile gives the product (1,2-C5H3(C(Ph)NH)2)CpMg(NCPh) (1) in 98% yield. In an analogous manner, the related complexes (1,2-C5H3(C(...

The fluorescent molecules 1-anilinonaphthalene-8-sulfonate (1,8-ANS) and 2-anilinonaphthalene-6-sulfonate (2,6-ANS) are extremely sensitive to the polarity of their local environment, making them excellent probes for the study of heterogeneous systems, including cyclodextrin (CD) solutions. Both are...

no abstract

[formula: see text] Both in vivo and in vitro techniques have been developed to test putative intermediates in the biosynthetic pathway to the pseudopterosins, antiinflammatory compounds isolated from Pseudopterogorgia elisabethae. Furthermore, specific activity data we have obtained indicate that p...

The rate constants (k) for reactions between a series of excited singlet state donors and the antimalarial agent, Artemisinin (ART), were measured in acetonitrile using fluorescence quenching techniques. A plot of log(k) correlates with the excited state oxidation potential of the donor, E-D(/D*).+,...

The fluorescence intensity of 7- methoxycoumarin (7MC) in aqueous solution is found to significantly decrease upon addition of various cyclodextrins. This observed phenomenon is described as fluorescence suppression, to distinguish it from fluorescence reduction via bimolecular quenching. The decrea...

Catalytic dehydrocoupling of phosphines was investigated using the anionic zirconocene trihydride salts [Cp*Zr-2(mu-H)(3)Li](3) (1a) or [Cp*Zr-2(mu-H)(3)K(thf)(4)] (1b), and the metallocycles [CpTi(NPtBu3)(CH2)(4)] (6) and [Cp*M(NPtBu3)(CH2)(4)] (M = Ti 20, Zr 21) as catalyst precursors. Dehydrocoup...

A number of biological and physical stimuli have been evaluated as inducers of pseudopterosin biosynthesis in the sea whip Pseudopterogorgia elisabethae. Data indicate that the production of pseudopterosins can be significantly increased in response to high levels of predation by the mollusk Cyphoma...