VABILO NA PREDAVANJE
V OKVIRU DOKTORSKEGA ŠTUDIJA
Hugh D. Burrows
Department of Chemistry, University of Coimbra,
Applications of Self
Conjugated Polyelectrolytes from Artificial
Photosynthesis to Explosives Detection
v novi predavalnici, na Fakulteti
za kemijo in kemijsko tehnologijo, Aškerčeva 5
Vljudno vabljeni !
Luminescent conjugated polymers are
technologically important materials with
real and potential applications including field effect transistors, light emitting diodes,
chemical and biological sensors, charge injection and transport layers.
advantage of these polymers for luminescence sensing applications
follows from the
ideas of Swager (1) that the
highly delocalised conjugated backbones lead to
amplification of sensor signals associated with the “molecular wire” properties of
these materials. This
leads both to highly efficient fluorescence quenching and the
possibility of Förster Resonance Energy Transfer (FRET)
to appropriate acceptors.
can be made water soluble by introducton of ionic groups to
conjugated polyelectrolytes (CPEs). These can be nanostructured to build
up organised nanostructures through self
assembly with surfactants, metal ions or
water soluble polymers (2). A
n overview will be provided of the effects of self
assembly in CPEs on their spectral and photophysical properties, concentrating in
particular on systems involving fluorene, phenylene and thiophene repeat units. It will
be shown that electronic energy tra
nsfer from the conjugated polymer to metal
complexes (3) or porphyrins (4) provides a way of mimicking the light harvesting
process in photosynthesis, which can be used for initiating chemical reactions. In
addition, the application of self
in fluorescence sensing of anions,
including nucleic acids (5,6), will be discussed. Finally, we will show how
fluorescence in these systems can provide a highly sensitive route to detect
nitroaromatic compounds present in explosives.
1. S.W. Thomas, G.D
. Joly. T.M. Swager,
2. H. D. Burrows, M. Knaapila, S. M. Fonseca, T. Costa, in “
Polyelectrolytes. Fundamentals and
Applications in Emerging Technologies
B. Liu, G. C. Bazan, Wiley
VCH, Weinheim, 2013, Chapter 4,
3. H.D. Burrows, S.M. Fonseca, F.B. Dias, J. Seixas de Melo, A.P. Monkman,
U. Scherf, S. Pradhan,
4. A.T. Marques, S.M.A. Pinto, C.J.P. Monteiro, J. S. Seixas de Melo, H.D.
Burrows, U. Scherf, M.J.F. Calvete, M.M. Pereira,
J. Polym. Sci., Polym. Chem
5. M.J. Tapia, M. Montserín, A.J.M. Valente, H.D. Burrows, R. Mallavia,
ll. Interface Sci.
6. S.M. Fonseca, R.P. Galvão, H.D. Burrows, A. Gutacker, U. Scherf, G.C.