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Showing 1 to 12 of 239 entries
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High-Quality InAsSb Nanowires Grown by Catalyst-Free Selective-Area Metal-Organic Chemical Vapor Deposition.

Nano letters

Farrell AC, Lee WJ, Senanayake P, Haddad MA, Prikhodko SV, Huffaker DL.
PMID: 26422559
Nano Lett. 2015 Oct 14;15(10):6614-9. doi: 10.1021/acs.nanolett.5b02389. Epub 2015 Oct 02.

We report on the first demonstration of InAs1-xSbx nanowires grown by catalyst-free selective-area metal-organic chemical vapor deposition (SA-MOCVD). Antimony composition as high as 15 % is achieved, with strong photoluminescence at all compositions. The quality of the material is...

Correction to Monolithically Integrated InGaAs Nanowires on 3D Structured Silicon-on-Insulator as a New Platform for Full Optical Links.

Nano letters

Kim H, Farrell AC, Senanayake P, Lee WJ, Huffaker DL.
PMID: 27030998
Nano Lett. 2016 Apr 13;16(4):2896. doi: 10.1021/acs.nanolett.6b00913. Epub 2016 Mar 31.

No abstract available.

Tunable P-Chiral Bisdihydrobenzooxaphosphole Ligands for Enantioselective Hydroformylation.

Organic letters

Tan R, Zheng X, Qu B, Sader CA, Fandrick KR, Senanayake CH, Zhang X.
PMID: 27333435
Org Lett. 2016 Jul 15;18(14):3346-9. doi: 10.1021/acs.orglett.6b01452. Epub 2016 Jun 22.

Air-stable and tunable chiral bisdihydrobenzooxaphosphole ligands (BIBOPs) were employed in rhodium-catalyzed asymmetric hydroformylation of various terminal olefins with excellent conversions (>99%), moderate-to-excellent enantioselectivities (up to 95:5 er), and branched to linear ratios (b:l) of up to 400.

Growth and characterization of epitaxially stabilized ceria(001) nanostructures on Ru(0001).

Nanoscale

Flege JI, Höcker J, Kaemena B, Menteş TO, Sala A, Locatelli A, Gangopadhyay S, Sadowski JT, Senanayake SD, Falta J.
PMID: 27165117
Nanoscale. 2016 May 19;8(20):10849-56. doi: 10.1039/c6nr02393b.

We have studied (001) surface terminated cerium oxide nanoparticles grown on a ruthenium substrate using physical vapor deposition. Their morphology, shape, crystal structure, and chemical state are determined by low-energy electron microscopy and micro-diffraction, scanning probe microscopy, and synchrotron-based...

Development of birth weight for gestational age charts in a Sri Lankan setting - methodological issues.

WHO South-East Asia journal of public health

Ruwanpathirana T, Fernando DN, Senanayake H.
PMID: 28612823
WHO South East Asia J Public Health. 2013 Jan-Mar;2(1):47-51. doi: 10.4103/2224-3151.115839.

BACKGROUND: This study was taken up to identify the main types of low birth weight (LBW) for the development of weight for gestational age charts relevant to the country/regional level for the formulation of preventive strategies.MATERIALS AND METHODS: A...

Challenging lanthanide relaxation theory: erbium and thulium complexes that show NMR relaxation rates faster than dysprosium and terbium analogues.

Physical chemistry chemical physics : PCCP

Funk AM, Harvey P, Finney KL, Fox MA, Kenwright AM, Rogers NJ, Senanayake PK, Parker D.
PMID: 26051749
Phys Chem Chem Phys. 2015 Jul 07;17(25):16507-11. doi: 10.1039/c5cp02210j. Epub 2015 Jun 08.

Measurements of the proton NMR paramagnetic relaxation rates for several series of isostructural lanthanide(III) complexes have been performed in aqueous solution over the field range 1.0 to 16.5 Tesla. The field dependence has been modeled using Bloch-Redfield-Wangsness theory, allowing...

Synthesis of P-Chiral Dihydrobenzooxaphosphole Core for BI Ligands in Asymmetric Transformations.

The Journal of organic chemistry

Li G, Wang XJ, Zhang Y, Tan Z, DeCroos P, Lorenz JC, Wei X, Grinberg N, Yee NK, Senanayake CH.
PMID: 28459568
J Org Chem. 2017 May 19;82(10):5456-5460. doi: 10.1021/acs.joc.7b00491. Epub 2017 May 05.

An efficient and practical synthesis of enantiomerically pure P-chiral dihydrobenzooxaphosphole (BOP) core 1 is developed that is amenable to large scale preparation of the related ligand series. The unique epimerization of the P-chiral center of the undesired (R,R)-diastereomeric phosphine...

Development of a .

The Journal of organic chemistry

Xin D, Sader CA, Chaudhary O, Jones PJ, Wagner K, Tautermann CS, Yang Z, Busacca CA, Saraceno RA, Fandrick KR, Gonnella NC, Horspool K, Hansen G, Senanayake CH.
PMID: 28398046
J Org Chem. 2017 May 19;82(10):5135-5145. doi: 10.1021/acs.joc.7b00321. Epub 2017 May 02.

An accurate and efficient procedure was developed for performing

Effect of Hydroxypropylation on Functional Properties of Different Cultivars of Sweet Potato Starch in Sri Lanka.

International journal of food science

Senanayake S, Gunaratne A, Ranaweera KK, Bamunuarachchi A.
PMID: 26904619
Int J Food Sci. 2014;2014:148982. doi: 10.1155/2014/148982. Epub 2014 Aug 31.

Starches obtained from different cultivars of sweet potatoes commonly consumed in Sri Lanka, were chemically modified with hydroxypropyl substitution, to analyze the changes in the physicochemical properties. Significant changes (P < 0.05) in the crude digestibility level, thermal properties,...

The ammine, thiosulfato, and mixed ammine/thiosulfato complexes of silver(I) and gold(I).

Inorganic chemistry

Perera WN, Senanayake G.
PMID: 15132610
Inorg Chem. 2004 May 17;43(10):3048-56. doi: 10.1021/ic035301z.

The M(I)-NH(3), M(I)-S(2)O(3)(2)(-), and M(I)-S(2)O(3)(2)(-)-NH(3) systems (M = Ag, Au) were studied at 25 degrees C and at I = 0.1 M (NaClO(4)) using a variety of analytical techniques. For the Ag(I)-NH(3)-S(2)O(3)(2)(-) system, AgS(2)O(3)NH(3)(-) was detected with formation constant...

Responsive fluorinated lanthanide probes for 19F magnetic resonance spectroscopy.

Chemical communications (Cambridge, England)

Senanayake PK, Kenwright AM, Parker D, van der Hoorn SK.
PMID: 17622432
Chem Commun (Camb). 2007 Jul 28;(28):2923-5. doi: 10.1039/b705844f. Epub 2007 Jun 21.

The introduction of CF(3) reporter groups close to the paramagnetic centre in macrocyclic lanthanide(iii) complexes allows faster acquisition of (19)F magnetic resonance data, and amplifies chemical shift non-equivalence, as exemplified by the definition of ratiometric chemical shift probes for...

On the role of the counter-ion in defining water structure and dynamics: order, structure and dynamics in hydrophilic and hydrophobic gadolinium salt complexes.

Dalton transactions (Cambridge, England : 2003)

Thompson AL, Parker D, Fulton DA, Howard JA, Pandya SU, Puschmann H, Senanayake K, Stenson PA, Badari A, Botta M, Avedano S, Aime S.
PMID: 17225897
Dalton Trans. 2006 Dec 21;(47):5605-16. doi: 10.1039/b606206g. Epub 2006 Aug 25.

The crystal structures of the hydrated salts of [Gd.DOTAM]3+ and its more hydrophobic derivative [Gd.]3+, bearing 4 alpha-phenylethyl groups, (both Gd and Yb salts) are reported and compared. The nature of the anion determines the degree of ordering in...

Showing 1 to 12 of 239 entries