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Charles G Wade

CPIMA Co-director, Materials Analysis and Characterization Department in the Science and Technology Function, IBM Almaden Research Center

IRG 1

Telephone: (408) 927-1650
Fax: (408) 927-3310
Email: cwade@almaden.ibm.com

Materials Analysis and Characterization Department in the Science and Technology Function, IBM Almaden Research Center, San Jose, CA. Ph.D. Physical Chemistry, MIT; Postdoctoral research at the University of Chicago; Chemistry faculty of the University of Texas at Austin. (1967-1979).

Our research uses nuclear magnetic resonance to study dynamics and microstructure of polymers and thin films. My department has four NMR spectrometers: 300 MHz (proton) solids and 250 MHz, 300 MHz, and 500Mhz liquids. These are all multinuclear instruments, but the nuclei of most interest are 13C, 1H, 19F, 29Si, and 2H. The 500 MHz spectrometer is modified to do solids 2H experiments. Much of the recent NMR work in CPIMA has focussed on an amorphous carbon overcoat (COC) used to protect magnetic storage disks in hard drives from corrosion. The COC is coated with a monolayer lubricant (a perfluoropolyether) and the system is crucial to the long term performance of the drive. A CPIMA collaboration with Professor Chris Klug at Stanford studies NMR relaxation of the lubricants. We use NMR to relate the microstructures to the performance characteristics of the drives. My department at IBM provides a range of techniques for analysis of polymeric, organic, and inorganic structures: NMR, Auger, thermal, photoelectron spectroscopy, SEM, TEM, X-ray, GPC, and Rutherford scattering.

Selected Publications:

  1. Lohmeijer, B. G. G., Dubois, G., Feibfarth, F., Nederberg, R. C. F., Nelson, A., Waymouth, R. M. Wade, C., Hedrick, J. L.; "Organocatalytic Living Ring-Opening Polymerization of Cyclic Carbosiloxanes". Org. Lett., 8, 21, 4683, 2006.
  2. B. G. G. Lohmeijer, G. Dubois, F. Leibfarth, Pratt, R. C. F. Nederberg, A. Nelson, R. M. Waymouth, C. Wade, J. L. Hedrick, "Organocatalytic Living Ring-opening Polymerization of Cyclic Carbosiloxanes" Org. Lett., 8, 4683, 2006.
  3. Lohmeijer, B. G. G., Pratt, R. C., Li, H., Dove, A. P., Nederberg, F., Mason, A. F., Eade, G., Choi, J., Waymouth, R. M., Wade, C., Hedrick, J. L.; "Organocatalytic Ring Opening Polymerization: Activation Through Hydrogen Bonding". Polymer Preprints, (American Chemical society, Division of Polymer Chemistry), 47, 2, 586-587, 2006.
  4. Pratt, R. C., Lohmeijer, B. G. G., Long, D. A., Lundberg, P. N. P., Dove, A. P., Li, H., Wade, C., Waymouth, R. M., Hedrick, J. L.; "Exploration, Optimization, and Application of Supramolecular Thiourea-Amine Catalysts for the Synthesis of Lactide (Co)Polymers". Macromolecules, 39, 7863-7871, 2006.
  5. Choi, J., Hermans, T. M., Lohmeijer, B. G. G., Pratt, R. C., Frommer, J., Waymouth, R. M., Wade, C., Hedrick, J. L.; "Monolayer Organosilicate Toroids and Cylinders: A Phase Diagram for Templating from a Block Copolymer". Nano. Lett., 6, 8, 5617, 2006.
  6. Hwang, L.Y., Götz, H., Hawker, C.J., Frank, C.W.; “Glyco-acrylate Copolymers for Bilayer Tethering on Benzophenone-modified Substrates”. Colloids and Surfaces B: Biointerfaces, 54, 127-135, 2007.

    Rocha-Mendoza, I., Yankelevich, D. R., Wang, M., Reiser, K. M., Frank, C. W., Knoesen A.; “Sum Frequency Vibrational Spectroscopy the Molecular Origins of the Optical Second-Order Nonlinearity of Collagen”. Biophysical Journal, 93, 12, 4433-4444, 2007.

    Nederberg, F., Trang, V., Pratt, R.C., Mason, A.F., Frank, C.W., Waymouth, R.M., Hedrick, J.L.; “New Ground for Organic Catalysis: A Ring-Opening Polymerization Approach to Hydrogels”. Biomacromolecules, 8, 3294-3297, 2007.

    Choi, J., Lohmeijer, B.G.G., Pratt, R.C., Dubois, G., Hermans, T.M., Frommer, J.; Nederberg, F.; Kim, H.C.; Waymouth, R.M.; Hedrick, J.L. "Expanding the Scope of Nanostuctures Possible from Block Copolymers: Role of Selective Deposition Solvent". Polymer Preprints (American Chemical Society, Division of Polymer Chemistry), 48, 884-885, 2007.

    Culkin, D. A., Jeong, W., Csihony, S., Gomez, E. D., Hedrick, J. L., Balsara, N. P., Waymouth, R. M.; “Zwitterionic Polymerization of Lactide to Cyclic Poly(lactide)s by using N-Heterocyclic Carbene Organocatalysts”. Angew. Chem., Int. Ed., 46, 2627-2630, 2007.

    Coulembier, O., Kiesewetter, M., Mason, A., Dubois, P., Hedrick, J. L., Waymouth, R. M.; “A Distinctive Organocatalytic Approach to Macromolecular Architectures”, Angew. Chem., Int. Ed., 46, 4719-4721, 2007.

    Jeong, W., Hedrick, J. L., Waymouth, R. M.; "Organic Spirocyclic Initiators for the Ring-Expansion Polymerization of -Lactones". J. Am. Chem. Soc., 129, 8414-8415, 2007.

    Coulembier, O., Delva, X., Hedrick, J.L., Waymouth, R. M., Dubois, P.; "Synthesis of Biomimetic Poly(hydroxybutyrate): Alkoxy- and Carboxytriazolines as Latent Ionic Initiator". Macromolecules, 40(24), 8560-856, 2007.

    Zhang, L., Nederberg, F., Messman, J.M., Pratt, R. C., Hedrick, J.L., Wade, C.G.; "Organocatalytic Stereoselective Ring-Opening Polymerization of Lactide with Dimeric Phosphazene Bases". J. Am. Chem. Soc., 129, 12610-12611, 2007

    Scholten, M D., Hedrick, J.L., Waymouth, R.M.; "Group Transfer Polymerization of Acrylates and Methacrylates Using N-Hetereocyclic Carbene Catalysts". Polymer Preprints (American Chemical Society, Division of Polymer Chemistry), 48, 167-168, 2007.

    Jeong, W., Shin, E. J., Culkin, D. A., Hedrick, J.L., Waymouth, R.M.; "N-Heterocyclic Carbene-Mediated Zwitterionic Polymerization: An Expedient Organocatalytic Route to Cyclic Polyesters". PMSE Preprints, 97, 82-83, 2007

    Wang, W., Knoesen, A.; “Rotation and Scale Invariant Texture Features Based on Spectral Moment Invariants”. Journal of the Optical Society of America A, 24, 9, 2550-2557, 2007.

    Wang, M., Reiser, K. M., Knoesen, A.; “Spectral Moment Invariant Analysis of Disorder in Polarization-Modulated Second Harmonic Generation Images Obtained from Collagen Assemblies”. Journal of the Optical Society of America A, 24, 11, 3573-3586, 2007.

    Kim, S.H., Nederberg, F., Pratt, R.C., Choi, J., Zhang, L., Wade, C.G., Waymouth, R.M., Hedrick, J.L.; "Effect of Stereochemistry and Sterecomplexation of Polylactides on Organosilicate Nanostructure". PMSE Preprints, 97, 221-222, 2007.

    Nederberg, F., Lohmeijer, B.G.G., Leibfarth, F.; Pratt, R. C.; Choi, J.; Dove, A.P., Waymouth, R. M., Hedrick, J. L.; "Organocatalytic Ring Opening Polymerization of Trimethylene Carbonate" Biomacromolecules, 8, 153-160, 2007.

    Zhang, L., Nederberg, F., Pratt, R. C, Waymouth, R. M., Hedrick, J. L., Wade, C. G.; "Phosphazene Bases: A New Category of Organocatalysts for the Living Ring-Opening Polymerization of Cyclic Esters". Macromolecules, 40, 4154-4158, 2007.

    Kamber, N.E., Jeong, W., Waymouth, R.M., Pratt, R.C., Lohmeijer, B.G.G., Hedrick, J. L.; "Organocatalytic Ring-Opening Polymerization". Chem. Rev., 107, 5813-5840, 2007.

    Pratt, R.C., Nederberg, F., Lohmeijer, B.G.G., Waymouth, R.M., Hedrick, J.L.; "Fully Degradable Functionalized Polymers: A Versatile Approach Using Ring-Opening Polymerization of Cyclic Carbonates". PMSE Preprints, 96, 204-205, 2007.

     

    Leibfarth, F.A., Lohmeijer, B.G.G., Nederberg, F., Pratt, R.C., Logan, J.W.; Waymouth, R.M.; Hedrick, J.L.; "Organocatalytic Ring Opening Polymerization of Cyclic Monomers: Mechanistic and Synthetic Studies". Polymer Preprints (American Chemical Society, Division of Polymer Chemistry), 48, 984-985, 2007.

    Waymouth, R.M., Hedrick, J.L., Nederberg, F., Pratt, R.C., Lohmeijer, B.G.G., Culkin, D.A., Coulembier, O., Kamber, N E., Jeong, W., Kiesewetter, M.K., Shin, E.J.; "Polyesters from Renewable Resources: Organocatalytic Strategies for Controlled Polymerization Reactions". Polymer Preprints (American Chemical Society, Division of Polymer Chemistry), 48, 812-813, 2007.

    Zhang, L., Nederberg, F., Pratt, R. C., Waymouth, R.M., Hedrick, J.L., Wade, C.G.; "Phosphazene Bases for the Organocatalytic Living Ring-Opening Polymerization of Cyclic Esters". Polymer Preprints (American Chemical Society, Division of Polymer Chemistry), 48, 875-876, 2007.

    Nederberg, F.; Pratt, R. C.; Mason, A. F.; Waymouth, R. M.; Hedrick, J. L. "An Organocatalytic Route to Functional and Biodegradable Hydrogels" Polymer Preprints (American Chemical Society, Division of Polymer Chemistry) 2007, 48, 907-908.

    Pratt, R.C., Nederberg, F., Waymouth, R.M., Hedrick, J.L.; "Functionalizing Polyesters and Polycarbonates: Covalent Tagging of Alcohols for Ring-Opening Polymerization". Polymer Preprints (American Chemical Society, Division of Polymer Chemistry), 48, 1005-1006, 2007.

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