Andrew G. Sykes, Professor & Chair, Inorganic Chemistry
1992-94
Camille and Henry Dreyfus Fellow, Northern Arizona University; 1990-92 Postdoctoral Research Associate, California
Institute of Technology; 1990 Ph.D., University of Minnesota; 1984
M.S., Montana State University; 1982 B.S., St. Lawrence University
L to R: Dr. D. Sandoval (Visiting Professor, Oglala Lakota
College), Bin Yao (G), Dawn Hair (Visiting Instructor, Nebraska Indian
Community College), Mariah S. (U), Tada V. (U), Arundhati Browmick (G), Professor Sykes, LaShawn
M. (H), Vinothini Balasubramanian (G), Prem Basa (G), Sarah F. (U) Dr.
Our main research emphasis involves the design
of novel chemical sensors, molecules that complex other guest molecules or ions
and signal a recognition event, usually through a change in response of the
host molecule to light. Our approach uses an anthraquinone platform and
substitutes organic directing groups on the same side of the
anthraquinone. The host can then coordinate guest molecules in
close proximity to one of the carbonyl groups, changing the fluorescence
response of the anthraquinone. The “shrubbery” suspended by the
anthraquinone can be varied, greatly influencing the emission and controlling
the selectivity of the host. Pendent
groups can include PET, ICT and excimer-related photophysical processes.
Recent Publications
Site-Selective Imination of an
Anthracenone Sensor: Selective Fluorescence Detection of Barium(II), Basa,
Prem N.;
Substitution
of Thiophene Oligomers with Macrocyclic End Caps and the Colorimetric Detection
of Hg(II), Mariappan Kadarkaraisamy, Soudsakhone Thammavongkeo,
Prem N. Basa, Gerald Caple, and Andrew G. Sykes, Org. Lett., 2011, 13 (9), 2364.
4-tert-Butylpyridinium triiodide-4-tert-butylpyridine,
Hongshan He and Andrew G. Sykes, Acta Crystall. E 2011, 67, o434.
2-(1-Acetyl-2-oxopropyl)-5,10,15,20-tetraphenylporphyrin
and Its Transition-Metal Complexes, He, Hongshan; Dubey,
Mukul; Zhong, Yihan; Shrestha, Maheshwar; Sykes, Andrew G., Eur. J. of Inorg. Chem.,
2011, 2011(25), 3731.
Preparation
of onium salts of a reduced anthracenone crown ether
macrocycle: A reactivity series involving pyridine, phosphine, thiophene,
nitrile and primary amide nucleophiles, Kadarkaraisamy, M.,
Caple, G. Basa, P.N.; Sykes, A.G. J. Phys. Org. Chem. 2011, in press.
Structural,
photophysical and theoretical studies of two dodecachlorinated porphyrins, He,
H.; Zhong, Y.; Si, L.; Sykes, A. Inorg. Chim. Acta 2011, 378, 30–35.
Di-μ-pivalato-κ3O,O_:O_;κ3O:O,O_-bis[(methanol-κO)bis-(2,2,6,6-tetramethyl-heptane-3,5-dionato)praseodymium(III)],
Meng, Q.; Cross, A.M.; May, P.S.; Sykes,
A.G.; Berry, M.T. Acta Cryst. E 2011,
E67, m1514-15.
BODIPY chromophores as efficient green light sensitizers for
lanthanide-induced near-infrared emission, He, H.; Sykes. A.G. Dalton
Trans., 2011, 40, 11389-11395.
Hybridization
of near-infrared emitting erbium(III) and ytterbium(III) monoporphyrinate
complexes with silica xerogel: synthesis, structure
and photophysics Hongshan He, Mukul Dubey, Andrew G. Sykes, P.
Stanley May, Dalton Trans., 2010, (28), 6466.
Structure and photophysics
of near-infrared emissive ytterbium(III) monoporphyrinate
acetate complexes having neutral bidentate ligands, Hongshan He, Andrew G.
Sykes, P. Stanley May, Guishan He, Dalton Trans., 2009, 7454.
Chelating, Bridging, and Chain Structures within Ag(I) and Cu(I)
Complexes of bis(nicotinyloxy),
bis(Isonicotinyloxy),
and bis(pyrimidine-5-carboxyloxy)-1,8-Disubstituted
Anthraquinone Ligands, Stephanie S. Peterson, Tishal Kirby, Mariappan
Kadarkaraisamy, Richard M. Hartshorn, Andrew G. Sykes, Polyhedron, 2009, 28, 3031.
Large Amplitude, Proton- and Cation-activated Latch-type
Mechanical Switches: O-Protonated Amides
Stabilized by Intramolecular,
Low-Barrier Hydrogen Bonds (LBHB) within Macrocycles, Mariappan Kadarkaraisamy,
Gerald Caple, Andrea R. Gorden, Marie Squire, Andrew G. Sykes, Inorg. Chem. 2008, 47, 11644.
Facile preparation of neutral monoporphyrinate
lanthanide complexes with strong near-infrared emission,” Hongshan He and
Andrew G. Sykes, Inorg. Chem. Comm., 2008,
1304.
Crystallography
and photoluminescence properties of b-diketonate
monoporphyrinate ytterbium (III) complexes, Hongshan
He, Andrew G. Sykes, David Galipeau, Seik Weng Ng, Michael Ropp Inorg. Chem. Comm., 2008, 1051.
Monomeric Complexes of 1,8-bis(isonicotinyloxy)anthracene-9,10-dione, Dan Engelhart,
Mariappan Kadarkaraisamy, and Andrew G. Sykes, J. Coord. Chem. 2008, 61, 3887.
Complexation, Crystallography, and
Electrochemistry of New Chelating Nicotinyl and Thiazolyl Anthraquinone Ligands, Mariappan
Kadarkaraisamy, Debdutta Mukherjee, Chin Chen Soh and
Andrew G. Sykes, Polyhedron 2007, 26, 4085.
Selective Luminescence Detection of Cadmium(II) and Mercury(II)
utilizing Sulfur-Containing Anthraquinone Macrocycles (Part 2) and Formation of
an unusual Hg22+- Crown Ether Dimer via Reduction of
Hg(II) by DMF, Mariappan Kadarkaraisamy and Andrew G. Sykes, Polyhedron 2007, 26, 1323.
Crystallographic
and Fluorescence Studies of Ammonium and Water Adducts of Anthraquinone
Fluorophores, Zhen Liu and Andrew G. Sykes, Journal
of Chemical Crystallography 2006,
36, 875.
Synthesis, Characterization and Photophysical
Properties of Mixed Ligand Tris(polypyridyl)chromium(III)
Complexes, Mauricio Isaacs, Andrew G. Sykes and Silvia Ronco, Inorganica Chimica Acta 2006,
359, 3847.
Luminescence Detection of Transition and Heavy Metals by Inversion
of Excited States: Synthesis, Spectroscopy and X-ray Crystallography of Ca, Mn, Pb
and Zn Complexes of 1,8-Anthraquinone-18-Crown-5,
Mariappan Kadarkaraisamy and Andrew G. Sykes, Inorganic Chemistry 2006,
45, 779. http://pubs.acs.org/cgi-bin/download.pl?ic051672z/34VT
Structural
and Electronic Features Important to nπ*–ππ*
inversion Sensors: Synthesis, Luminescence, and Electrochemical Properties of
Sulfur and Chlorine-containing Macrocycles. Part 3, Mariappan Kadarkaraisamy,
Eric Dufek, Desire Lone Elk and Andrew G. Sykes, Tetrahedron
2005, 61, 479.
Updated: December 2011.