Enhanced Two-Photon Absorption in Dendrimers

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Enhanced Two-Photon Absorption in Dendrimers T.
Goodson III, University of Michigan, DMR-0134691
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Enhanced Two-Photon Absorption in Dendrimers T.
Goodson III, University of Michigan, DMR-0134691
Educational Aspects of Study Graduate Student
Ajit Bhaskar (Macromoelcular Engineering) and
Postdoctoral Fellow Ying Wang have worked on this
project in the PIs lab. The dedrimer systems
were synthesized by Professor Mireille
Blanchard-Desces group at the Université de
Rennes. The project incorporated a number of
spectroscopic tools that these two scientists
from the PIs group have used thoroughly. While
more sophisticated measurements were utilized
such as time-resolved absorption and emission as
well as 3-pulse photon echo measurements, other
methods that were more familiar to the summer
students that worked with the two scientists in
our group. This included linear absorption and
emission measurements. This allowed for the
students (undergraduate (REU) and high school) to
first contribute to this project with techniques
that they were already familiar with and gave
them the time to understand the more
sophisticated and less familiar techniques. This
has been a rewarding experience for students and
scientists at many levels!
Outreach Activities With support from the
NSF-REU program and from project SEED (ACS) two
summer students have participated on this project
this summer. One undergraduate (Unique Luna) who
joined the group in the fall is working with
graduate student Ajit Bhaskar on two-photon
emission measurements. The second student
(Latisha Burrell) is a high school student from
the Detroit Public Schools as is part of the
ACS-SEED program headed by the Detroit section of
the ACS. She is working with Dr. Ying Wang in the
PIs group on the photo-physical properties of
dendrimers and the possibility of enhanced
two-photon absorption and emission.
Ying Wang (left) and Ajit Bhaskar (right) stand
before the Two-photon emission (TPE) apparatus
used in studies of the mechanism in dendrimers.