Gordon (Cheuk Fai) Chiu, gordonchiu[at]temple.edu      

After 5 yrs of high school in Penzance, United Kingdom, Gordon returned to Hong Kong to continue his education in Applied Physics.  In 2007, Gordon and his family moved to Philadelphia and he joined the Temple University as B.S. candidate in Chemistry.

Gordon joined the Borguet group in May 2008.  His current projects focus on tunable visible luminescence of single-walled carbon nanotubes and the fluorescence of organic fluorophores covalently attached to carbon nanotubes. The latter project, "Carbon nanotube based solar cell," was selected for funding by the Creative Arts, Research and Scholarship (CARAS) Program at Temple University.  Gordon will explore the application of dye-sensitized carbon nanotubes for solar cell productions.

Gordon was awarded first prize the physical chemistry division for his presentation at the 73rd Intercollegiate Student Chemist Convention.  Gordon has also been offered a Research Experience for Undergraduates (REU) position at Rice University in summer 2009.  He will spend his time in the birthplace of fullerenes to continue his study on nanomaterials.
Gordon also participated in the Diamond Peer Teacher Program at Temple University.  Working closely with Dr. Andrew Price, he planned and taught a recitation section on a weekly basis. 

In November 2009, Gordon received a Student Award from The Eastern Analytical Symposium (EAS). The award recognizes the scientific achievements and research talent in undergraduate students. Gordon has been actively involved in the carbon nanotube research at the Borguet group and he has participated in a numbers of conferences. Gordon was also one of the awardees for the NSF Research Experiences for Undergraduates (REU) program in 2009.

In April 2010, Gordon was the recipient of the Richard Asher Paclin Memorial Prize. Gordon demonstrated an outstanding record of achievement, showed great promise of a future development in the field of chemistry, and attained the highest scholastic average.

Gordon Chiu left the Borguet Group as he completed his Bachelor of Science degree in the Class of 2010. He is now studying toward his Ph.D. in Physical Chemistry at the University of Pittsburgh.

Gordon's CV











"Luminescence of Fluorophores on Carbon Nanotube Surface"
Cheuk Fai Chiu, Nikolay Dementev [Graduate Student Mentor] and Eric Borguet*

A carbon nanotube can be considered as a sheet of graphite rolled up to form a cylinder a few nanometers (nm) in diameter and as long as 1000s of nm.  Carbon nanotubes have unique mechanical and electronic properties, suggesting potential applications in many areas, including sensors, high performance materials and solar cells.[1, 2, 3]

In this study, we addressed the question of how the luminescence of chromophores changes when they are attached to carbon nanotubes.  We developed a method to use oxygenated defects sites on carbon nanotubes for the specific covalent attachment of organic dyes, the chromophores in our study.[4]  Our results show that the luminescence of chromophores is typically reduced upon attachment to the nanotube surfaces.  In cases where the luminescence is reduced by over an order of magnitude, possible application of light harvesting hybrid material devices based on dye sensitized carbon nanotubes can be considered.[5]

[1]  J. Kong, N. R. Franklin, C.W. Zhou, M. G. Chapline, S. Peng, K. Cho, H.J. Dai.  Nanotube Molecular Wires as Chemical Sensors. Science 287: 622-25, 2000
[2]  A.B. Dalton, S.Collins, E.Muñoz, J.M. Razal, V.H. Ebron, J.P. Ferraris, J.N. Coleman, B.G. Kim and R.H. Baughman.  Super-tough carbon-nanotube fibres. Nature 423, 703, 2003
[3]  J.U. Lee. Photovoltaic effect in ideal carbon nanotube diodes. Applied Physics Letters 87, 073101, 2005
[4]  N. Dementev, X. Feng and E. Borguet. Fluorescence Labeling and Quantification of Oxygen-Containing Functionalities on the Surface of Single Walled Carbon Nanotubes. Langmuir (In press)
[5]  C.F. Chiu, N. Dementev, E. Borguet. Quenching of Luminescence of Fluorophores on Carbon Nanotubes.  (In preparation)