Nanyang Technology University

Chemistry and Chemical Engineering 

This category covers:

  • Advanced Chemical Processes
  • Biological Chemistry
  • Catalysis
  • Chiral & Pharmaceutical Engineering
  • Green Chemistry
  • Inorganic chemistry
  • Medicinal Chemistry
  • Molecular Modeling
  • Natural Product Synthesis
  • Organic Synthesis
  • Physical Chemistry
  • Process Systems Engineering/Process Control
  • Statistical Thermodynamics
  • Stereochemistry
  • Theoretical / Computational / Physical Chemistry
  • Theoretical Chemistry
  • Spectroscopy

 
Process System and Multi-Scale Modeling
The group focuses on the research subjects of four principles spanning from quantum/statistical mechanics to macroscopic systems; first-principle and ab-initio calculations, molecular modeling and simulation, hydrodynamics, and control and optimization of chemical processes. In our group, while individual subjects are of great importance to pose potential impacts on scientific recognitions, any parallel and series of combination of the specified principles can be autonomously engineered to yield theoretical generality by undertaking inductive and deductive approaches. While our paradigm is based on bridging characteristics of researches, our group takes on the following individual projects as initiatives:

First-Principle and Ab-Initio Calculations
By quantum mechanics and density functional calculations, we study heterogeneous catalytic reactions, surface sciences phenomena, as well as surface thermodynamics and kinetics studies to bridge between surface science’s experiments and real industrial scale reactions.

Molecular Modeling and Simulation
Molecular Dynamics and Monte Carlo simulation methodology are applied for studying defects in crystals, confined fluids, phase equilibria, and fluids in catalytic membrane. Current modules are built upon basis of simple potentials such as hard sphere and square well, and more realistically, Lennard-Jones and Morse potentials. While abstract understandings of the real systems are possible through those models, our intention is to extend the projects by adopting semi-empirical/empirical potentials or by developing one, hence to incarnate real systems.

Hydrodynamics
We develop simplified minimal molecular dynamics model for applications such as microflows, turbulence, and multiphase flows. The ultimate goal is to create the so called minimal molecular Dynamics, which constitutes small but realistic model of fluid flows. In such modeling approaches, one tries to create molecular dynamics stripped to its bare essentials. The basic idea is to create a simple molecular dynamics with smallest possible number of degree of freedoms. The advantage of such an approach is becoming increasingly recognized as for an example: lattice Boltzmann models are now routinely used for computer simulations of fluid flows and for hydrodynamics of complex fluids.

Control and Optimization of Chemical Processes
We develop dynamic models of chemical systems including catalytic reactors, crystallizers, solid oxide fuel cells and bioreactors to better understand their behaviors, optimize their performance in the face of uncertainty and design control structures. In addition, data based methods to detect and diagnose faults in industrial processes and analyze underlying phenomenon in biomedical processes using multivariate statistics are being explored. Chemometric techniques are also being developed to improve the calibration of spectroscopic sensors that forms the basis of on-line process optimization and control.

Related Links:
Centre for Chiral & Pharmaceutical Engineering
Division of Chemistry & Biological Chemistry, School of Physical & Mathematical Sciences

 NameResearch Interests
Prof Anthony Gordon Fane(1) Membrane Science and Technology Synthetic membrane fabrication and characterisation. Fouling and fouling control of reverse osmosis, ultrafiltration and microfiltration membranes. Transport through synthetic membranes. Applications in desalination, dewatering, biotechnology and waste treatment. The use of ceramic membranes. Gas separation technology. (2) Pollution Control and Cleaner Production Chemical engineering principles applied to water pollution control. Environmental impact statements - water quality aspects. Cleaner Production and Waste Minimisation. (3) Process Safety and Hazards Analysis Application of modern methods (eg. HAZOPs) to safe process design.
Prof Atul N. ParikhMembrane biophysics biologically inspired materials biosensors synthetic chemical biology
Prof Bo Gunnar LiedbergThe research interests of Prof. Bo Liedberg can be divided into three main areas Surface Chemistry and Self Assembled Monolayers This part of the research concerns fundamental studies of adsorbates and ultrathin molecular architectures, like Self-Assembled Monolayers (SAMs), on solid supports. The group was very early in studying self-assembly of substituted alkylthiols on gold substrates. A key activity has been to study temperature driven phenomena occurring in such assemblies as well as in adsorbed layers on top such SAMs. Oligo(ethylene glycol) and oligosaccharide SAMs have attracted considerable attention, both experimentally and theoretically, because of their structural characteristics and advantageous properties in contact with biofluids. Another area concerns interfacial water and ice. Temperature programmed studies have been undertaken to improve the understanding of the nucleation and microscopic wetting behavior of water/ice. The complexity of the SAMs has increased over the years and we are today focusing on architectures based on SAMs bearing multivalent chelator heads, helix-loop-helix polypeptides and receptor functions. Bioinspired and Biomimetic Nanoscience This research concerns the development of nanoscale architectures fabricated using either top-down or bottom-up protocols (or a combination of both). We are, for example, developing plasmonic arrays based on 100 nm gold nano dots on silicon and glass surface for amplification of optical fluorescence signals, so-called metal enhanced fluorescence (MEF). We are also developing composite materials based on a combination of de novo designed peptide scaffolds, planar surfaces and nanoparticles of controlled size and shape. A novel concept based on peptide folding has been used for controlled assembly of gold nanoparticles. The group is also involved in the development of Dip Pen Nanolithography (DPN) for patterning of surfaces on the 30-100 nm length scale. This work is performed jointly with a previous student of the group who nowadays is setting up a nanolaboratory at the Institute of Physics, Vilnius. We are also involved in several EC projects where different types of micro- and nanoscale patterning tools are employed for production of coatings for biofouling, sensing and biomedical applications. Optical Biosensors, micro- and nanoarrays The group has a long experience in developing optical transducers for biosensing application. We were the first to demonstrate the use of surface plasmon resonance for studies of bioaffinity interactions at surfaces, a technology that today form the backbone in SPR/Biacore instruments developed for biospecific interaction analysis (BIA). We are today using it in combination with ellipsometric interrogation and imaging optics for microarraying, and in combination with nanoparticle for studies optical enhancement phenomena. This includes, for example, microarray chips for protein multiplexing. The group is also working on the development of generic biochips for studies of ligand-receptor binding. Besides working on microarray fabrication for protein detection and analysis we are also developing biochips for the safety and security area. Selected publications 1. Tinazli, A., Tang, J., Valiokas, R., Picuric, S., Lata, S., Piehler, J., Liedberg, B., Tampe, R., Chem. Eur. J. 11, 5249-5259 (2005). 2. Aili, D., Enander, K., Tai, F-I., Baltzer, L., Liedberg, B., Angew. Chem., 120, 5636-5638 (2008). 3. Aili, D., Enander, K., Baltzer, L., Liedberg, B., Nano Letters, 8, 2473-2478 (2008). 4. Andersson, O., Ulrich, C., Björefors, F., Liedberg, B., Sensors&Actuators B: Chemical, 134, 545-550 (2008). 5. Klenkar, G., Liedberg, B., Anal. Bioanal. Chem. 391, 1679-1688 (2008). 6. Aili, D., Selegård. R., Baltzer, L., Enander, K., Liedberg, Small, 5, 2445-2452 (2009). 7. Lee, H.-H., Ruzele, Z., Malysheva, L., Onipko, A., Gutes, A., Björefors, F., Valiokas, R., Liedberg, B., Langmuir, 25(24), 13959–71 (2009).
Assoc Prof Cai WenjianProf Cai's areas of expertise are system modelling, control and optimization, multivariable system identification and control, sensor and instrumentation, mechanical system simulation and design, and intelligent systems. His current research works focus on industry applications in building HVAC processes, renewable energy processes and environmental processes.
Prof Chan Bee Eng, MaryDr Chan-Park has interest and expertise in nanoimprint, micro- and nano-patterning, biomaterials, tissue engineering and carbon nanotubes. She has published more than 80 hournal papers and holds more than 15 patents/patent applications in these areas. She has supervised more than 12 PhD students and 15 postdoctoral fellows.
Assoc Prof Chan VincentUnderstanding the biophysical properties of cells on biomaterials is essential for designing new tissue regeneration processes and for developing new biomedical devices. Our main objective is to reveal the synergistic interplay between biochemical, physical and mechanical signals in the regulation of cell adhesion, regenerations and recovery on biomaterials or extracellular matrix (ECM). Integrative bio-analytics are critical to our research. Using functional microscopy, optical tweezers and atomic force microscopy, we examine the biophysical dynamics of cell regeneration, biomechanics of membrane and dynamic adhesion of bacteria. We will devise important design principles for engineered tissue equivalents, bio-inspirational materials and anti-microbial devices. I have been working in the following research topics during the last 9 years at Nanyang Technological University: i) Biophysical Dynamics of Cell Regenerations ii) Biophysical Mechanics of Membrane iii) Development of Integrative Biophysical Instrumentation
Asst Prof Chang Wook, MatthewProf. Chang's areas of expertise are systems biology, metabolic engineering, and engineering biology. His current research works focus on elucidating genetic regulatory networks and relevant cellular mechanisms in bacteria.
Assoc Prof (Adj) Charles William JohannesMy research is focused on employing enantioselective methodologies and synthetic natural product strategies in the development of a Diversity Oriented Synthesis (DOS) approach to generate innovative chemical matter for novel therapeutic medicines.
Asst Prof Chen GangThe overall goal of my research group is to employ cutting-edge biophysical techniques to better understand the structures and the physical-chemical properties of RNAs and RNA-ligand complexes to provide deeper insight into and to facilitate precise control of the diverse biological functions involving RNA. We aim to use the fundamental knowledge to fight neurodegenerative diseases, cancers, bacterial and viral infections by designing and discovering novel therapeutic ligands targeting RNA. To approach the challenging goals, we have assembled a multidisciplinary team with expertise ranging from molecular biophysics, structure biology, computation, chemical synthesis, cell biology, to medical healthcare. The research projects of current interests are: (1) characterizing the molecular recognition interactions (e.g., hydrogen bonding and aromatic base stacking) accounting for structure, stability, and dynamics of RNA structural building blocks such as internal loops, hairpins, triplexes, and pseudoknots, (2) probing the complex energy landscapes of RNA folding and assembly with protein, (3) designing and discovering therapeutic ligands (small molecules, oligonucleotides, peptides, peptide nucleic acid, etc.) targeting RNA, (4) developing nucleic acid based biosensors to rapidly detect toxic/pathogenic agents in food products and human body, and (5) discovering and characterizing novel nucleic acid based catalysts for important organic and inorganic reactions at mild conditions. We employ various conventional and cutting-edge biophysical and biochemical techniques including laser optical tweezers, NMR, UV-Vis, fluorescence, SPR, gel electrophoresis, PCR, chemical synthesis of modified oligonucleotides and peptides, in vitro transcription, protein expression, and cell culture assay. The research experience in the laboratory will help the students to grasp fundamental knowledge and experimental skills, to develop learning skills such as rigorous reasoning and innovative thinking, and to be able to ask and answer important questions within and beyond chemical and molecular sciences. Selected Representative Publications: Zhou, Y., Kierzek, E., Loo, Z.P., Antonio, M., Yau, Y.H., Chuah, Y.W., Geifman-Shochat, S., Kierzek, R., and Chen, G. (2013) Recognition of RNA duplexes by chemically modified triplex-forming oligonucleotides. Nucleic Acids Res, doi: 10.1093/nar/gkt352 Tinoco, I., Jr., Chen, G., and Qu, X. (2010) RNA reactions one molecule at a time, in RNA Worlds, (Gesteland, R.F., Cech, T.R., and Atkins, J.F., Eds.), Cold Spring Harbor Laboratory Press Chen, G., Chang, K.-Y., Chou, M.-Y., Bustamante, C., and Tinoco, I., Jr. (2009) Triplex structures in an RNA pseudoknot enhance mechanical stability and increase efficiency of –1 ribosomal frameshifting. Proc. Natl. Acad. Sci. USA 106, 12706-11. (Cover Highlight and In This Issue Highlight) Chen, G., Wen, J.-D., and Tinoco, I., Jr. (2007) Single-molecule mechanical unfolding and folding of a pseudoknot in human telomerase RNA. RNA 13, 2175-88. Chen, G., Kennedy, S.D., and Turner, D.H. (2009) A CA+ pair adjacent to a sheared GA or AA pair stabilizes size-symmetric RNA internal loops. Biochemistry 48, 5738-52. Chen, G., Znosko, B.M., Kennedy, S.D., Krugh, T.R., and Turner, D.H. (2005) Solution structure of an RNA internal loop with three consecutive sheared GA pairs. Biochemistry 44, 2845-56. (Listed as one of five "Hot Articles" in Feb. 2005 in Biochemistry)
Assoc Prof Chen HongyuAsst. Prof. Chen Hongyu' research mainly evolves around polymer-coated gold nanoparticles. A main goal is to use the nano-sized hydrophobic shells on nanoparticles to separate the reducing equivalents from photo-induced charge-separation, as a model for the conversion of solar energy to chemical energy by the photosynthetic apparatus in green plants. His research also involves the controlled organization of nanoparticles and the development of nanoparticles as surface-enhance Raman scattering probes.
DCSIMG