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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

Acidic hydroxyl groups in zeolites X and Y: a correlation between infrared and solid-state NMR spectra
B Gil, E Broclawik, J Datka, J Klinowski
– The Journal of Physical Chemistry
(2002)
98,
930
29Si Magic-Angle-Spinning NMR Spectroscopy Quantitatively Monitors the Double-Chain/Triple-Chain Intergrowths in Hydrous Silicates
J Rocha, MD Welch, J Klinowski
– Journal of the American Chemical Society
(2002)
113,
7100
Solid-State NMR Studies of Hydrated Porous Aluminophosphate VPI-5
J Rocha, W Kolodziejski, H He, J Klinowski
– Journal of the American Chemical Society
(2002)
114,
4884
Intercalation of polyoxycation species into conducting layered host lattices of MoO3 and TaS2
A Lerf, E Lalik, W Kolodziejski, J Klinowski
– Journal of Physical Chemistry
(2002)
96,
7389
IN-SITU C-13 SOLID-STATE NMR-STUDIES OF THE CATALYTIC CONVERSION OF METHANOL ON EXPANDED MONTMORILLONITES AND SAPONITES
H He, L Zhang, J Klinowski, ML Occelli
– The Journal of Physical Chemistry
(2002)
99,
6980
Intercalation and pillaring of zirconium bis(monohydrogenphosphate) with 3-[(triethoxy)silyl]-1-propylamine
L Li, X Liu, Y Ge, L Li, J Klinowski
– The Journal of Physical Chemistry
(2002)
95,
5910
Hydrogen bonding and the structure of substituted ureas: solid-state NMR, vibrational spectroscopy, and single-crystal x-ray diffraction studies
W Kolodziejski, I Wawer, K Wozniak, J Klinowski
– The Journal of Physical Chemistry
(2002)
97,
12147
THERMAL-STABILITY OF STRUCTURAL ALUMINUM IN THE MESOPOROUS MOLECULAR-SIEVE MCM-41
Z Luan, C-F Cheng, H He, J Klinowski
– Journal of Physical Chemistry
(2002)
99,
10590
ESCA studies of framework silicates with the sodalite structure. 1. Comparison of purely siliceous sodalite and aluminosilicate sodalite
B Herreros, H He, TL Barr, J Klinowski
– The Journal of Physical Chemistry
(2002)
98,
1302
ESCA studies of framework silicates with the sodalite structure. 2. Ultramarine
H He, TL Barr, J Klinowski
– The Journal of Physical Chemistry
(2002)
98,
8124
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Email address

jk18@cam.ac.uk

College

Peterhouse