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Sivvu (TM)

Professor Douglas A. Vander Griend Research

 
Chemistry at Calvin

Our research focuses on syntheses and reactions of materials using atoms from all over the periodic table. We use a variety of difference synthetic techniques and many analytical tools such as NMR, X-ray diffraction, thermogravimetry, and Factor Analysis of UV-vis spectra.

Supramolecular Chemistry
Inorganic Thermochromic Materials
Equilibrium Restricted Factor Analysis

 

Supramolecular Chemistry
The quest for technologically useful materials with nanometer-sized features increasingly relies on synthetic innovations to assemble complex supramolecules. The difficulty in creating intricate structures from smaller molecular building blocks is organizing the pieces in specific pre-designed ways. The difficulty increases with complexity, but so do the rewards. Just as the secondary, tertiary, and quaternary elements of structure endow enzymes with enhanced functionality, so development of nanotechnology aims to harness the efficacy beyond the limits of primary covalent interactions. This area of research has recently spawned applications in catalysis, ion exchange, host-guest interactions, molecular magnets, nanoelectronics, and nanomachines.

We build supramolecules by linking inorganic units (atoms or clusters) with organic ligands. We are working to design, synthesize, and characterize coordination networks of arbitrary size, shape, and symmetry by exploiting mathematical constraints and chemical control. Besides encouraging undergraduate students to invent and execute rational synthetic schemes, this interdisciplinary research aims to advance the limits of self-assembly molecular processes. more...

 
Inorganic Thermochromic Materials
Many inorganic coordination compounds are beautifully colored, and some change color with changing temperature. The study of these compounds involves spectroscopy, thermodynamics, and inorganic synthesis. more...
 

Equilibrium Restricted Factor Analysis
It is possible through advanced mathematical computations to obtain information about specific chemical compounds in solution without ever isolating the compounds themselves. This is a huge advantage for studying solution thermodynamics, which we employ in both of the previous research topics listed. We have written Matlab computer protocols which take absorbance data of multiple solutions at equilibrium and solve for the molar absorbtivities of all the species in solution and the equilibrium constants for the reactions between them. more...