Because of their spectroscopic and chemical properties, the lanthanide(III) ions have been important spectroscopic probes for calcium and magnesium binding studies in biological systems. For example, Eu(III) luminescence studies have become an important measure of the number of interacting atoms and water molecules between a biochemical material and the metal ion domain. However, despite over twenty years of their applications in biological systems, much fundamental information about the interactions of these lanthanide ions with their surroundings is still unknown. We propose using spectroscopic techniques, including ultrasonic absorption, FT-NMR, FT-IR and UV-vis methods, to develop information about the composition of the inner coordination shell of these cations. A second aspect of this proposal is the study of d-transition ions, cobalt, nickel, copper and zinc, in water and mixed solvents to learn about the domains surrounding the metal ion centers. Specific studies include: (1) Ultrasonic absorption of Yb(III) with sulfate, La(III) with 18-crown-6, and Zn(II) with glycine and possibly carbonic anhydrase or carboxypeptidase A. (2) Equilibrium constant determinations of Co(II) with Cl- and with glycine, Ni(II) and Cu(II) with SCN-, and Cu(II) with sulfate. (3) Structural studies of solvated LaCl/3 in aqueous organic solvents using FT-NMR and FT-IR at low temperatures to determine the composition of the inner coordination shell. (4) FT-NMR studies of zinc complexes in mixed solvents to detect geometry changes in solution. (5) We intend to initiate comparisons between the lanthanides and the actinide elements towards future work on biological and environmental concerns about actinide contamination. (6) We will investigate complex formation between the buckminsterfullerenes and organic donor/acceptor molecules.

Project Start
Project End
Budget Start
Budget End
Support Year
Fiscal Year
Total Cost
Indirect Cost
San Jose State University
San Jose
United States
Zip Code
Saleh, Nidal; Moore 2nd, Barry; Srebro, Monika et al. (2015) Acid/base-triggered switching of circularly polarized luminescence and electronic circular dichroism in organic and organometallic helicenes. Chemistry 21:1673-81
Saleh, Nidal; Srebro, Monika; Reynaldo, Thibault et al. (2015) enantio-Enriched CPL-active helicene-bipyridine-rhenium complexes. Chem Commun (Camb) 51:3754-7
Zhang, Xiao-Peng; Chang, Victoria Y; Liu, Jian et al. (2015) Potential switchable circularly polarized luminescence from chiral cyclometalated platinum(II) complexes. Inorg Chem 54:143-52
Sundar, M Shyam; Talele, Harish R; Mande, Hemant M et al. (2014) Synthesis of enantiomerically pure helicene like bis-oxazines from atropisomeric 7,7'-dihydroxy BINOL: Preliminary measurements of the circularly polarized luminescence. Tetrahedron Lett 55:1760-1764
Sánchez-Carnerero, Esther M; Moreno, Florencio; Maroto, Beatriz L et al. (2014) Circularly polarized luminescence by visible-light absorption in a chiral O-BODIPY dye: unprecedented design of CPL organic molecules from achiral chromophores. J Am Chem Soc 136:3346-9
Shen, Chengshuo; Anger, Emmanuel; Srebro, Monika et al. (2014) Straightforward access to mono- and bis-cycloplatinated helicenes that display circularly polarized phosphorescence using crystallization resolution methods. Chem Sci 5:1915-1927
Tohgha, Urice; Deol, Kirandeep K; Porter, Ashlin G et al. (2013) Ligand induced circular dichroism and circularly polarized luminescence in CdSe quantum dots. ACS Nano 7:11094-102
Brunet, Ernesto; Jimenez, Laura; de Victoria-Rodriguez, Maria et al. (2013) The use of lanthanide luminescence as a reporter in the solid state: Desymmetrization of the prochiral layers of ýý-zirconium phosphate/phosphonate and circularly polarized luminescence. Microporous Mesoporous Mater 169:222-234
Bozoklu, Gulay; Gateau, Christelle; Imbert, Daniel et al. (2012) Metal-controlled diastereoselective self-assembly and circularly polarized luminescence of a chiral heptanuclear europium wheel. J Am Chem Soc 134:8372-5
Carey, Clayton M; Bueno, Raymund; Gutierrez, Daniel A et al. (2012) Recombinant rubistatin (r-Rub), an MVD disintegrin, inhibits cell migration and proliferation, and is a strong apoptotic inducer of the human melanoma cell line SK-Mel-28. Toxicon 59:241-8

Showing the most recent 10 out of 47 publications