Organic Chemistry Seminar: Dr. Bekka Klausen, John Hopkins

October 01, 2018 - 12:00 PM - 01:00 PM
Speaker: 

Dr. Bekka Klausen

Title:
Unconventional Building Blocks for Functional Polymeric Materials
Abstract:
The Klausen group designs and synthesizes unconventional molecular building blocks
for the construction of diverse functional polymeric architectures. Motivated by the conviction
that the synthesis of new materials drives the discovery of new applications, this talk will
describe the synthesis and polymerization of novel hybrid inorganic-organic monomers. The
materials we prepare are expected to find application in energy science as earth abundant
quantum materials or as plastics with finely controlled physical properties.
The semiconductor silicon has revolutionized life in the last century, from the
development of computer chips to the discovery of solar cells that make telecommunication
satellites possible. The frontier for silicon research and development is at the nanoscale. The
incredible potential of nanoscale silicon arises from the attractive properties it shares with bulk
silicon, such as earth abundance and low precursor toxicity, and the distinctive optical and
electronic properties emerging at small sizes. This talk describes the design and synthesis of
new molecular forms of silicon, as well as the characterization of materials properties and the
fabrication of electronic devices based on molecular silicon.
BN 2-Vinylnaphthalene (BN2VN) is a solution to a long-standing challenge in polymer
chemistry, the copolymerization of nonpolar and polar monomers. Though the incorporation of
polar functionality into nonpolar polymers is an essential strategy for modulating physical
properties, challenges in their direct copolymerization include phase separation, significant
differences in reactivity, and the limited compatibility of polar functional groups with
polymerization catalysts. We show that BN2VN retains the reactivity of styrene, while postpolymerization
modification of the C-B bond provides hydroxyl-functionalized polymers, or
styrene-vinyl alcohol (SVA) copolymers.

Location: 

Carol Lynch Lecture Hall

Chemistry Complex

Attached Document: 

Host: Dr. Winkler

inquiries rvargas@sas.upenn.edu

Department of Chemistry

231 S. 34 Street, Philadelphia, PA 19104-6323

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