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Dr. Rigoberto Advincula
Associate Professor of Chemistry |
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by Noelle Heinze |
Imagine a thin, flexible
computer screen that rolls up like a sheet of paper, a blood
test
performed without the prick of a needle, and sensors that
detect chemical and biochemical toxins before they can
harm us. Dr. Rigoberto
Advincula, associate professor of chemistry at UH, imagines
these things and so do his students, and through a mutually
beneficial mentor/student relationship, they are working
on bionano polymer research to make these scenarios possible.
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“I
want to see the sparkle in their eyes, then I know these are
the right students to work with,” says Advincula,
about his undergraduate and graduate students working in his
chemistry lab. Spend a few moments with Advincula, and
it is immediately clear that teaching is his passion, using research
to teach is his vehicle, and producing scientists trained to
be independent researchers is the result. As he describes
it, “I push students to have to do the work themselves,
creating a situation in which the instructor becomes observer,
moving to the sidelines, and in most cases my students really
surprise me.” Through the Welch Summer Scholar
Program, a five-week residential program designed to expose
high school students to university-level research, Advincula
also mentors high school students. |
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a multilevel approach to mentoring, Advincula divides several
projects into portions an undergraduate
or high school student can work on and assigns upper-level
students to work with different groups. Then, as advisor, Advincula
guides the groups in planning experiments and analyzing results. In
this way “scientific skills are transferred,” he
says. In addition to personal attention, students receive
practical training with computational programs to plot and
analyze results, have access to sophisticated laboratory equipment
to investigate materials, and hone communication skills by
interacting with UH scientists and by presenting work in
seminars and posters. |
“I’ve
always been curious about plastics,” says
Advincula with a soft laugh, “and when I started reading
articles about how common polymers are to daily life, how such
a field can combine chemistry, biology, and engineering, I
realized polymer research is a widely applicable field.” This
realization, along with a desire to know “how to make
long molecules versus small molecules,” eventually
brought Advincula to Houston, a city with a thriving polymer
industry. |
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| In
the Advincula lab, research focuses on ultrathin polymer films
with applications in advanced electronics,
display technology, and biomedical devices. One goal is
to develop materials to create biosensors with polymer films
made of dendrimers, highly branched polymer molecules shaped
like a sphere. Visualize a strand of spaghetti chopped
into pieces and arranged as small branches originating from a
core; this is a dendrimer, which captures DNA in very high concentrations
on surfaces. So, Advincula’s films are the interface
between instrument and environment and can be used for DNA chips
to profile genetic makeup to identify disease, as glucose sensors
to detect diabetes, and as detectors for biochemical poisons. In
addition, these nanostructured films can be used as coatings
for bioimplant devices, such as coating a heart stent to increase
mechanical strength and decrease biocorrosion. |
Advincula’s research group
has also developed polymer materials to make light-emitting
diodes for polymer flexible display devices. These
light-emitting diodes produce bright colored light, applicable
for large or small displays. Possible uses include car stereo
displays and dashboards, large-screen televisions, and maybe
one day, computer screens that roll up. |
Currently,
five Ph.D. candidates and several undergraduates are working
on polymer research in Advincula’s lab. He
has seen three Ph.D. students graduate, and he has had the
pleasure of watching former high school students from the summer
program continue their studies in the sciences. Perhaps
Advicula’s pleasure is best expressed when he reveals
that the very first high school student he mentored, a female
minority student, is now a science teacher. |
In
terms of teaching, Advincula sees his responsibilities to society
going “beyond
Houston, beyond Texas,” and for a nation that faces a potential
future shortage of scientists, Advincula’s commitment
to education and research at UH is beyond measure. |
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