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Start Over Author "Williams, Travis" Journal chemical communications
6 results on '"Williams, Travis"'

4. Control of emission colour with N-heterocyclic carbene (NHC) ligands in phosphorescent three-coordinate CU(I) complexes.

Author

Krylova, Valentina A., Djurovich, Peter I., Conley, Brian L., Haiges, Ralf, Whited, Matthew T., Williams, Travis J., and Thompson, Mark E.

Subjects
HETEROCYCLIC compounds, CARBENES, LIGANDS (Chemistry), PHOSPHORESCENCE, EMISSION control
Abstract

A series of three phosphorescent mononuclear (NHC)-Cu(i) complexes were prepared and characterized. Photophysical properties were found to be largely controlled by the NHC ligand chromophore. Variation of the NHC ligand leads to emission colour tuning over 200 nm range from blue to red, and emission efficiencies of 0.16-0.80 in the solid state. [ABSTRACT FROM AUTHOR]

Published
2014
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5. A dual site catalyst for mild, selective nitrile reduction.

Author

Zhiyao Lu and Williams, Travis J.

Subjects
*RUTHENIUM catalysts, *BORON, *NITRILES, *METAL catalysts, *DEHYDROGENATION
Abstract

We report a novel ruthenium bis(pyrazolyl)borate scaffold that enables cooperative reduction reactivity in which boron and ruthenium centers work in concert to effect selective nitrile reduction. The pre-catalyst compound [K³-(1-pz)2HB(N = CHCH3)]Ru(cymene)+ TfO- (pz = pyrazolyl) was synthesized using readily-available materials through a straightforward route, thus making it an appealing catalyst for a number of reactions. [ABSTRACT FROM AUTHOR]

Published
2014
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6. Non-covalent self assembly controls the relaxivity of magnetically active guests.

Author

Li, Vincent, Ghang, Yoo-Jin, Hooley, Richard J., and Williams, Travis J.

Subjects
MOLECULAR self-assembly, GADOLINIUM, MAGNETIC materials, MOLECULAR recognition, ADDITION reactions
Abstract

The relaxivity of a magnetically responsive Gd complex can be controlled by non-covalent molecular recognition with a water-soluble deep cavitand. Lowered relaxivity is conferred by a self-assembled micellar “off state”, and the contrast can be regenerated by addition of a superior guest. [ABSTRACT FROM AUTHOR]

Published
2014
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