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Yusuf Hamied Department of Chemistry

 

Our main interest is in the relationship between the structure and properties of solids. We study the geometric reasons for the chemical activity of solids and the relationship between local order and physical properties, using mathematical techniques and computer graphics. We use solid-state nuclear magnetic resonance spectroscopy (NMR) to examine molecular sieves, minerals, layered materials, fullerenes, ceramics and biological materials.

The G minimal surface divides space into two interpenetrating labyrinths (coloured red and green).

Specific projects:

  • Periodic minimal surfaces (surfaces with zero mean curvature), which appear in a variety of inorganic, organic and biological structures, and the associated mathematical problems.
  • Morphogenesis (the origin of shape and form).
  • Systematic enumeration of crystalline networks using mathematical tiling theory.
  • Graphite, graphite oxide and graphene.
  • Synthesis and characterization of microporous and mesoporous molecular sieves.
  • Synthesis and characterization of metal-organic frameworks (MOFs).

Selected Publications

Hypothetical zeolitic frameworks: In search of potential heterogeneous catalysts. J. Phys. Chem. 112, 1040 (2008)

Low-temperature thermal decomposition of large single crystals of ammonium perchlorate. Chem. Phys. Lett. 454, 233 (2008)

Simulating self-assembly of ZnS nanoparticles into mesoporous materials. J. Am. Chem. Soc. 128, 15283 (2006)

Cross-polarization in the solid state. A guide for chemists. Chem. Rev. 102, 613 (2002)

Synthesis and characterization of a new layered compound of trimesic acid. New Journal of Chemistry 26, 381 (2002)

Exact computation of the triply periodic G ('gyroid") minimal surface. Chem. Phys. Lett. 321, 363 (2000)

Systematic enumeration of crystalline networks. Nature 400, 644 (1999)

Structural studies of tabasheer, an opal of plant origin. Phil. Mag. A 77, 201 (1998)

Structure of graphite oxide revisited. J. Phys. Chem. B102, 4477 (1998)

Solid-state NMR studies of fullerene C60/benzene solvates. J. Phys. Chem. B101, 117 (1997)

New rapidly convergent series representations for z (2 n + 1). Proc. Am. Math. Soc. 125, 1263 (1997)

Directing the pore dimensions in the mesoporous molecular sieve MCM-41. Chem. Phys. Lett. 263, 247 (1996)

Taboo Search: an approach to the multiple-minima problem. Science, 267, 664 (1995)

Publications

Nodal surface approximations to the zero equipotential surfaces for cubic lattices
PJF Gandy, J Klinowski
– Journal of Mathematical Chemistry
(2002)
31,
1
A novel one-dimensional coordination polymer with Cd2+ and diethylenetriaminepentaacetic acid.
FA Almeida Paz, AD Bond, YZ Khimyak, J Klinowski
– Acta crystallographica. Section C, Crystal structure communications
(2002)
58,
M608
A one-dimensional CoIIcoordination polymer exhibiting an unusual conformation for 1,2-bis(4-pyridyl)ethane
FAA Paz, AD Bond, YZ Khimyak, J Klinowski
– Acta Crystallographica Section E: Crystallographic Communications
(2002)
58,
M691
Synthesis and Characterization of a Novel Modular Cadmium‐Organic Framework with Biphenyl‐4,4′‐dicarboxylate
FAA Paz, YZ Khimyak, AD Bond, J Rocha, J Klinowski
– European Journal of Inorganic Chemistry
(2002)
2002,
2823
NMR studies of restricted diffusion in lyotropic systems
K Szutkowski, J Klinowski, S Jurga
– Solid State Nucl Magn Reson
(2002)
22,
394
H-1 and C-13 NMR studies of molecular dynamics in the biocopolymer of glycolide and epsilon-caprolactone
F Nozirov, E Szczesniak, Z Fojud, P Dobrzynski, J Klinowski, S Jurga
– Solid State Nuclear Magnetic Resonance
(2002)
22,
19
The equipotential surfaces of cubic lattices
PJF Gandy, J Klinowski
– Chemical Physics Letters
(2002)
360,
543
Integral representations of the Riemann zeta function for odd-integer arguments
D Cvijovic, J Klinowski
– Journal of Computational and Applied Mathematics
(2002)
142,
435
Geometric quantization of curvature energy in equipotential surfaces of ionic crystals
PJF Gandy, J Klinowski
– The Journal of Chemical Physics
(2002)
116,
9431
Hydrogen bonding and the structure of substituted quinoxalines: Solid-state NMR and single-crystal X-ray diffraction studies
K WOZNIAK, TM KRYGOWSKI, E GRECH, W KOLODZIEJSKI, J KLINOWSKI
– Journal of Physical Chemistry
(2002)
97,
1862
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Research Group

Email address

jk18@cam.ac.uk

College

Peterhouse