INVESTIGADORES
MARTINO Debora Marcela
congresos y reuniones científicas
Título:
Evaluation of the Photodimerization of 4-vinyl(benzyl) Thymine and 4-vinyl(benzyl) Trialkyl Ammonium Chloride Polymers and Copolymers Induced by Ultraviolet Light
Autor/es:
K.C MCDONOUGH; R.A. KOELLN; N. CHEN; K.Y. DUPUY; C.M. NORMAND; B. TRAN; S. BORTOLATO; D.M. MARTINO; R. GURNEY
Lugar:
Austin Texas
Reunión:
Conferencia; 5th Annual TECHCON Conference, Semiconductor Research Corporation; 2013
Institución organizadora:
TECHCON
Resumen:
The
study of bio-inspired polymers had grown enormously in last few years as a
consequence of the environmental and toxicological problems liked to the
synthesis and non-degradability of traditional plastics. The synthesis of
polymers containing 4-vynil-benzyl-thymine (VBT) acquired particular
significance and had opened the possibility of producing a wide variety of
polymers soluble in water and able to crosslink reversibly when irradiated with
UV light. These environmentally benign polymers are based
on a polystyrene (PS) backbone, to which two types of pendant groups are added.
Charged functional groups allow for water solubility, while thymine groups in
the presence of UV light (λ ~ 270) undergo a dimerization reaction, resulting
in polymer chain crosslink. Crosslinked polymers become insoluble due to high
molecular weight and complex structure of the resulting network. This allows
for potential use of VBT polymers in a wide variety of applications: in
microelectronic industry, coatings and adhesives, chromatography,
photolithography, solar cells, controlled drug release (medicines and
pesticides), personal care products, etc. The
dimerization of thymine can be reversed, either enzymatically or by irradiation
with UV light (at λ ~ 240 nm), after which the polymer becomes soluble again
and can be reused for subsequent applications.