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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

Oxidative damage in Alzheimer's dementia, and the potential etiopathogenic role of aluminosilicates, microglia and micronutrient interactions.
PH Evans, E Yano, J Klinowski, E Peterhans
– EXS
(1992)
62,
178
AL-27 QUADRUPOLE NUTATION AND H-1-AL-27 CROSS-POLARIZATION SOLID-STATE NMR-STUDIES OF ULTRASTABLE ZEOLITE-Y WITH FAST MAGIC-ANGLE SPINNING
J ROCHA, SW CARR, J KLINOWSKI
– Chemical Physics Letters
(1991)
187,
401
HIGH-RESOLUTION SOLID-STATE H-1 NUCLEAR-MAGNETIC-RESONANCE SPECTRA OF ORGANIC TEMPLATE IN HYDRATED ALUMINOPHOSPHATE VPI-5
W KOLODZIEJSKI, J ROCHA, HY HE, J KLINOWSKI
– Applied Catalysis
(1991)
77,
L1
Synthesis of zeolite Na-A from metakaolinite revisited
J ROCHA, J KLINOWSKI, JM ADAMS
– Journal of the Chemical Society, Faraday Transactions
(1991)
87,
3091
Solid-state 27Al NMR studies of AlPO4-8
J ROCHA, XS LIU, J KLINOWSKI
– Chemical Physics Letters
(1991)
182,
531
Two-dimensional J-scaled 29Si NMR COSY of highly siliceous mordenite
W KOLODZIEJSKI, PJ BARRIE, HY HE, J KLINOWSKI
– Journal of the Chemical Society, Chemical Communications
(1991)
961
Probing the dynamics of methylated benzenes adsorbed on zeolite ZSM-5 by quasielastic neutron scattering
JH WILLIAMS, GJ KEARLEY, SA AXON, J KLINOWSKI
– Journal of the Chemical Society, Chemical Communications
(1991)
959
Solid-state NMR elucidation of the role of mineralizers in the thermal stability and phase transformations of kaolinite
J ROCHA, J KLINOWSKI, JM ADAMS
– Journal of Materials Science
(1991)
26,
3009
Double-rotation 27Al NMR studies of the aluminophosphate molecular sieve AlPO4-11
PJ BARRIE, ME SMITH, J KLINOWSKI
– Chemical Physics Letters
(1991)
180,
6
The rehydration of metakaolinite to kaolinite
J ROCHA, J KLINOWSKI
– Journal of the Chemical Society, Chemical Communications
(1991)
582
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Research Group

Email address

jk18@cam.ac.uk

College

Peterhouse