Jennifer Laaser

Department of Chemistry, University of Pittsburgh
Ph.D., Physical Chemistry, University of Wisconsin-Madison, 2013
Summary:

In the Laaser Lab, we are interested in developing a physical understanding of how changes at the molecular level translate to the macroscopic properties of responsive polymeric materials. For example, how does a change in charge spacing affect the interactions between charged polymers, and at what point do the polymers stop behaving like isolated chains in solution and start behaving like part of a bulk material? How do orientational changes in single polymer chains propagate through a material to achieve macroscopic ordering? And how do polymeric networks transduce force, to achieve things like mechanochemical responses?

We explore these questions by a number of optical and spectroscopic methods, such as light scattering and Raman and infrared spectroscopy, along with classical materials characterization methods like rheology and electron microscopy. Together, these methods allow us to develop new understanding of the structure and dynamic properties of responsive polymeric materials, and offer students the opportunity to gain broad experience in both physical chemistry and polymer science.

Students
Namesort descending Position Email
Arora, Swati Graduate Student swa10@pitt.edu
Dinh, Cindy Undergraduate Student cid6@pitt.edu
Huang, Jun Graduate Student juh68@pitt.edu
Huo, Zijian Graduate Student zih8@pitt.edu
Kong, Victoria Graduate Student vak51@pitt.edu
Moncure, Paige Graduate Student pam126@pitt.edu
Rozon, Julisa Graduate Student jur33@pitt.edu
Sun, Henry Undergraduate Student has150@pitt.edu

Swati Arora

Graduate Student

swa10@pitt.edu
219 Parkman Ave, Pittsburgh PA, 15213

Affiliation:

Chemistry
University of Pittsburgh

Cindy Dinh

Undergraduate Student

cid6@pitt.edu
219 Parkman Ave, Pittsburgh PA, 15213

Affiliation:

Chemistry
University of Pittsburgh

Jun Huang

Graduate Student

juh68@pitt.edu
1212 Chevron Science Center, Pittsburgh PA, 15213

Affiliation:

Chemistry
University of Pittsburgh

Zijian Huo

Graduate Student

zih8@pitt.edu
1212 Chevron Science Center, Pittsburgh PA, 15213

Affiliation:

Chemistry
University of Pittsburgh

Victoria Kong

Graduate Student

vak51@pitt.edu
219 Parkman Ave, Pittsburgh PA, 15213

Affiliation:

Chemistry
University of Pittsburgh

Paige Moncure

Graduate Student

pam126@pitt.edu
219 Parkman Ave, Pittsburgh PA, 15213

Affiliation:

Chemistry
University of Pittsburgh

Julisa Rozon

Graduate Student

jur33@pitt.edu
219 Parkman Ave, Pittsburgh PA, 15213

Affiliation:

Chemistry
University of Pittsburgh

Henry Sun

Undergraduate Student

has150@pitt.edu
219 Parkman Ave, Pittsburgh PA, 15213

Affiliation:

Chemistry
University of Pittsburgh
Most Cited Publications
  1. "Adding a dimension to the infrared spectra of interfaces using heterodyne detected 2D sum-frequency generation (HD 2D SFG) spectroscopy," Wei Xiong, Jennifer E. Laaser, Randy D. Mehlenbacher, and Martin T. Zanni, PNAS 108, 20902 (2011)
  2. "Time-Domain SFG Spectroscopy Using Mid-IR Pulse Shaping: Practical and Intrinsic Advantages," Jennifer E. Laaser, Wei Xiong, and Martin T. Zanni, J. Phys. Chem. B 115, 2536 (2011)
  3. "Transient 2D IR Spectroscopy of Charge Injection in Dye-Sensitized Nanocrystalline Thin Films," Wei Xiong, Jennifer E. Laaser, Peerasak Paoprasert, Ryan A. Franking, Robert J. Hamers, Padma Gopalanand Martin T. Zanni, J. Am. Chem. Soc. 131,18040 (2009)
  4. "Two-Dimensional Sum-Frequency Generation Reveals Structure and Dynamics of a Surface-Bound Peptide," Jennifer E. Laaser, David R. Skoff, Jia-Jung Ho, Yongho Joo, Arnaldo L. Serrano, Jay D. Steinkruger, Padma Gopalan, Samuel H. Gellman, and Martin T. Zanni, J. Am. Chem. Soc. 136, 95 (2014)
  5. "Bridge-Dependent Interfacial Electron Transfer from Rhenium−Bipyridine Complexes to TiO2 Nanocrystalline Thin Films," Peerasak Paoprasert, Jennifer E. Laaser, Wei Xiong, Ryan A. Franking, Robert J. Hamers, Martin T. Zanni, J. R. Schmidt and Padma Gopalan, J. Phys. Chem. C 114, 9898 (2010)
Recent Publications
  1. "Charge-Density-Dominated Phase Behavior and Viscoelasticity of Polyelectrolyte Complex Coacervates," J Huang, FJ Morin, and JE LaaserMacromolecules (2019)
  2. "Charge Density-and Hydrophobicity-Dependent Dynamics of Polyelectrolyte Complex Coacervates,"  J Laaser and J Huang.  APS Meeting Abstracts (2019)
  3. "19F Magnetic Resonance Imaging of Injectable Polymeric Implants with Multiresponsive Behavior." Sedlacek, Ondrej, Daniel Jirak, Andrea Galisova, Eliezer Jager, Jennifer E. Laaser, Timothy P. Lodge, Petr Stepanek, and Martin Hruby. Chemistry of Materials 30, no. 15 (2018): 4892-4896.
  4. "Composition-dependent dynamics in polyelectrolyte complex coacervates." Laaser, Jennifer, Frances Morin, and Jun Huang. In ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY, vol. 255. 1155 16TH ST, NW, WASHINGTON, DC 20036 USA: AMER CHEMICAL SOC, 2018.
  5. "Charge Density-Dependent Phase Behavior and Rheology of Polyelectrolyte Complex Coacervates." Morin, Frances, and Jennifer Laaser. Bulletin of the American Physical Society (2018).

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