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Yusuf Hamied Department of Chemistry

 
Portrait of nb10013

Assistant Director of Research


Our interests encompass a number of areas spanning conventional organic, biological and inorganic chemistry. In all our work, nuclear magnetic resonance (NMR) spectroscopy is used as the principal tool for the structural and dynamic characterisation of a diverse range of compounds.


Rational Design and Synthesis of Multimetal Supramolecular Systems (in collaboration with Prof. J.K.M. Sanders). Large and often complex molecules are prepared in order to mimic specific properties inherent in nature or of interest in the laboratory. Construction employs covalent and non-covalent linkages between building blocks - often using metal-ligand interactions (Zn, Ru, Ni, Sn). The first phase involves modelling the target molecules to ensure that they will exhibit the desired structural characteristics, which influence specific binding interactions. A typical system is shown on the right.



Spectroscopy at the Interface between the Solid and Solution State. One aspect of our interest involves characterisation and manipulation of molecules at the atomic level. Collaborative studies (Prof. M.E. Welland, Department of Engineering, and Dr Q. Guo, Department of Physics at Birmingham University) have allowed us to "see" single complex molecules on substrate surfaces using STM (a striking example of a porphyrin dimer is shown on the right) and AFM.


The second aspect involves synthesis and characterisation (by HR-MAS NMR) of molecules bound to solid supports which exhibit part solid/part liquid properties and can generate sensors and molecular switches (in collaboration with Prof. M. J. Gunter, Department of Chemistry, University of New England, Australia).


Small Molecule NMR Characterisation. The large arsenal of high resolution spectrometers in this department and our range of new state of the art probes (gradient, gel- phase, CryoProbe) have allowed us to deal with a diverse range of challenging organic and inorganic compounds.


Selected Publications


Synthesis and characterisation of carboxylate complexes of Sn(IV) porphyrin monomers and oligomers, Chem. Eur. J. 9 (21), 2003, 5211-5222.


A self-assembling polymer-bound rotaxane under thermodynamic control, Chem. Commun. , 2003, 1396-1397.


A strategy for the assembly of multiple porphyrin arrays based on the coordination chemistry of Ru-centered porphyrin pentamers, J. Org. Chem., 2001, 66, 4476-4486.


STM images of individual porphyrin molecules, Angew. Chemie Intl. Edn., 1999, 38, 2780.


Assembly of dynamic heterometallic oligoporphyrins using Zn-N, Ru-N and Sn-O coordination, J. Am. Chem. Soc., 1999, 121, 8121.

Publications

One‐Pot Synthesis of Indene‐Expanded Porphyrins
GR Peterson, N Bampos
– Angewandte Chemie International Edition
(2010)
49,
3930
Anion templated assembly of an indolocarbazole containing pseudorotaxane on beads and silica nanoparticles
LY Zhao, KM Mullen, MJ Chmielewski, A Brown, N Bampos, PD Beer, JJ Davis
– New Journal of Chemistry
(2009)
33,
760
Crown-ether- and porphyrin-attached gel-phase resins in thermodynamically controlled rotaxane assembly
KM Mullen, KD Johnstone, D Nath, N Bampos, JKM Sanders, MJ Gunter
– Organic & biomolecular chemistry
(2008)
7,
293
Monitoring the thermodynamically-controlled formation of diimide-based resin-attached rotaxanes by gel-phase HR MAS 1H NMR spectroscopy
KM Mullen, KD Johnstone, M Webb, N Bampos, JKM Sanders, MJ Gunter
– Org Biomol Chem
(2007)
6,
278
COLL 559-STM investigation of the structure, dynamics and reactivity of porphyrins on Ag(100)
RM Lambert, PH Vaughan, M Turner, FJ Williams, A Hille, N Bampos, JKM Sanders
– ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY
(2006)
232,
Needles and clusters of zinc porphyrin molecules on mica
H George, RE Palmer, Q Guo, N Bampos, JKM Sanders
– Surface Science
(2006)
600,
3274
A chemically switchable molecular pinwheel.
OPH Vaughan, FJ Williams, N Bampos, RM Lambert
– Angewandte Chemie International Edition
(2006)
45,
3779
Gel-phase HR-MAS 1H NMR spectroscopy as a probe for solid-tethered diimide rotaxanes and catenanes
KD Johnstone, N Bampos, JKM Sanders, MJ Gunter
– New Journal of Chemistry
(2006)
30,
861
Kinetics of skeletal rearrangement of H2FeP[CH2CH2CH2P(CH3)2]3 by an inversion–transfer–recovery NMR method
LD FIELD, N BAMPOS, BA MESSERLE
– Magnetic Resonance in Chemistry
(2005)
29,
36
Giant contrast reversal in scanning tunnelling microscopy of zincporphyrin monolayers on graphite
Q Guo, J Yin, RE Palmer, N Bampos, JKM Sanders
– Chemical Physics Letters
(2005)
402,
121
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Research Interest Groups

Telephone number

01223 762970

Email address

nb10013@cam.ac.uk

College

Trinity Hall