Daniel Graham
	Title:	Associate Professor, Physical Chemistry
	Phone:	(773) 508-3169
	E-mail:	dgraha1@luc.edu

Personal Information

    B.S., 1976, Stanford University
Ph.D., 1981, Washington University, St. Louis
Postdoctoral Fellow, 1981-83, Boston University

Research Interests

Activities of this lab focus on crystallization, melting, and fluid structure. In one project, laser spectroscopic and low temperature techniques are applied to the crystallization of organic molecules. The experiments involve quenching and annealing of organic glasses (typically aromatic molecules) with interrogation by light scattering and laser induced fluorescence. The aim is to observe the first few steps of organic molecules as they make their way into crystalline phase space. The experiments offer answers to several questions. For example, what aspects of crystallization transcend the details of sample preparation? What role does symmetry play in the early stages of crystallization?

In a second area, detergent foams are utilized as analogue/digital model fluids. The emphasis here is placed on fluid structure and the melting process. Basically, all the problems of fluid structure are mapped from the atomic level onto samples of macroscopic size: the foam samples serve as analogue computers which reveal what nature obscures at the molecular scale. The approach in this project entails a combination of wet foam preparation and computer image processing. The objectives are to simulate atomic-scale melting and to answer several fundamental questions. For example, what is the sequence of atomic-scale steps in melting-type phase transitions? What are the symmetry rules which govern melting?

   Selected Publications

"Pulsed Laser Heating Studies of Organic Amorphous/Glassy Solids I: Experiments with Anthracene", Daniel J. Graham, J. Phys. Chem., 1991, 95, 993.

"Pulsed Laser Heating Studies of Organic Amorphous/Glassy Solids II: Experiments with Benzophenone", Daniel J. Graham and Dwayne L. LaBrake, J. Phys. Chem., 1991, 95, 997.

"Emission Spectroscopy of Nitrogen in a Supersonic Discharge: Distributions Revealed by Penning Ionization", Daniel J. Graham and Jing-Chen Luo, Chem. Phys. Letters, 1992, 199, 426.

"Emission Spectroscopy of Nitrogen in a Supersonic Discharge: Evidence of Excited Neutral Nitrogen Clusters", Daniel J. Graham, Scott M. Hurst and Jing-Chen Luo, J. Chem. Phys., 1993, 98, 2564.

"Molecular-Level Crystallization of Benzophenone: Low Temperature Phosphorescence and Annealing Experiments", Daniel J. Graham and Dwayne L. LaBrake, J. Phys. Chem., 1993, 97, 5594.

"Observing Crystallization Molecule-by-Molecule Using Exciton Transfer/Emission Spectroscopy", Daniel J. Graham and Dwayne L. LaBrake, Applied Spectroscopy, 1993, 47, 625.

"Investigation of Cooling of N2(C3?u,v',J') in a Supersonic Discharge", D.J. Graham, S.M. Hurst and J.C. Luo, J. Phys. Chem., 1995, 99, 1115 .

"Investigation of Solidification of Benzophenone in the Supercooled Liquid State", D.J. Graham, P. Magdalinos and M. Tosi, J. Phys. Chem., 1995, 99, 4757.

"Detergent Foam Images as Analogue/Digital Model Fluids I: Phase Behavior and Effective Pair Potentials", Daniel J. Graham, Peter Magdalinos, and Dante Pimentel, J. Phys. Chem. ., 1997, B101, 11201.

"Detergent Foam Images as Analogue/Digital Model Fluids II: Neighborship Partition of the Radial Distribution Function", Daniel J. Graham, Peter Magdalinos, and Dante Pimentel, J. Phys. Chem. ., 1997, B101, 11211.

"Investigation of the Neighborship Distribution Functions of Several Monatomic Liquids," Daniel J. Graham and Bart Pilarski, J. Phys. Chem. ., 2000, B104, 329.

"Base Information Content in Organic Molecular Formulae", Daniel J. Graham and David S. Schacht, J. Chem. Inf. Comput. Sci.., 2000, 40, 942.