Macromolecular Chemistry Seminar

Macromolecular Chemistry Seminars are hosted by John Pojman at 12:30 pm pm on Fridays in 208 Williams  (Tower Dr, Baton Rouge, LA 70808)

Spring 2016 Schedule

Date Speaker Credentials /Advisor Title
1/13 Welcome and business meeting    
1/20 Yoan Simon The University of Southern Mississippi Theory of evolution… of materials
1/27 Chris Arges

Department of Chemical Engineering

LSU

Molecular level engineering of block copolymer electrolytes via directed self-assembly
2/3* Brian Long University of Tennessee at Knoxville "Utilizing Coordination-Insertion Based Polymerizations for the Synthesis of Tailored Polyolefins
and Gas Separation Membranes ... More Information
2/10 Matt Binns
Christopher Van Leeuwen
BrunoJakobi
Judith De Mel
  Short talks
2/17 Joseph R. Lott School of Polymers and High Performance Materials
The University of Southern Mississippi
Photon Upconversion in Polymeric Materials .... More Information
2/24 Remi Lawal
David Siefker
Ju Dong
Nathan Kersker
  Short talks
3/3 Youngfeng Zhao Jackson State University  Development of nanoparticles for biomedical application: Cancer imaging and
therapy
3/10* Eugenia Kharlampieva  University of Alabama Birmingham  
3/17 Yu Wang  University of Louisiana at Lafayette Controlled Polymer Synthesis Towards Higher Level of Perfection
3/24 Sam Bynum   Literature Talk
3/31 Arjun Pandey   Literature Talk
4/7 Tianyi Yu
Mailange (Rasangi) Perera
Anthony Mai
Ly Ngo
  Short talks
4/14 Spring break    
4/21 Kylee Fazende    
4/28* Prof. Toby Nelson Oklahoma State University “Redefining Melanin: From Eumelanin-inspired materials to structure-property
relationship

 

 * Joint LaCNS/Macromolecular seminar

For inquiries regarding the MacroMolecular Seminar, please contact Dr. John Pojman (japojman@lsu.edu)

 

2/3 Brian Long
"Utilizing Coordination-Insertion Based Polymerizations for the Synthesis of Tailored Polyolefins
and Gas Separation Membranes"

Coordination-insertion based polymerization methods provide a multitude of
opportunities for enhanced control over catalytic activity, selectivity, and reactivity. Through
tailored catalyst development and macromolecular design, the Long Research Group leverages
these advantages to synthesize unique and/or tailored polymeric structures for a variety of
applications. In this talk, we will demonstrate the potential power of these coordination-insertion
based polymerization methods through two studies. First, we will provide fundamental evidence
that redox-active olefin polymerization catalysts can be effectively used to modulate polyolefin
microstructure and copolymer composition via simple in situ changes in a catalyst's oxidationstate.
Second, we will demonstrate that careful catalyst selection can enable access to a unique
class of polymers that was previously believed to be inaccessible, and that those materials are
extremely attractive as highly efficient gas separation membranes.

 

2/17 Joseph R. Lott
School of Polymers and High Performance Materials

Photon upconversion refers to the generation of photons with higher energy than the incident light
source. The ability to increase photon energies is a powerful tool with the potential to impact many
emerging technologies, from managing the solar spectrum in photovoltaics, to other applications
such as optical data storage, drug delivery, organic light emitting diodes, bioimaging, and
photocatalytic water splitting. Photon upconversion via the mechanism of triplet-triplet
annihilation (TTA) offers the prospect of employing low-power and non-coherent excitation
sources to drive the upconversion process. Solid-state materials capable of TTA present several
significant challenges including limited solubility of the required chromophores and reduced
molecular diffusion. Owing to the wide range of chemical compositions, tunable mechanical
properties, and the ease of processing, polymeric materials have been at the forefront of solid-state
materials for TTA. Several macromolecular approaches to TTA are covered: Doping of smallmolecule
chromophores into rubbery host materials, covalent attachment of chromophores into
elastomer and epoxy networks, and chain growth polymerizations of vinyl functionalized
chromophores.