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Dean DeLongchamp (Fed)


I lead the Polymer Processing Group, which develops measurement methods, data, standards, and science for the processing and manufacturing of materials into functional forms that include thin films, nanostructures, and shaped bulk solids. We provide expertise in in situ processing measurements, structure and order evolution, nanofabrication, polymer phase behavior, and polymer dynamics needed to improve the performance of materials in application areas such as energy and electronics.

My work also includes a specialization in soft X-ray spectroscopy and scattering, which are powerful synchrotron-based tools that measures the composition and molecular orientation of organic systems.

    Research Opportunities

    National Research Council Postdoctoral Fellowship – Open to U.S. citizens. Please contact me if you're interested in applying! 



    • Arthur S. Flemming Award (2015)
    • National Academies of Engineering Indo-US Frontiers (2012)
    • National Academies of Science Kavli Fellow (2010)
    • NIST William P. Slichter Award (2010)
    • Presidential Early Career Award for Scientists and Engineers (PECASE) (2009)
    • NIST Bronze Medal Award (2008)
    • Sigma Xi young Investigator Award (2008
    • NRC/NIST Postdoctoral Fellow Appointment (2003)
    • NSF/KOSEF Korea Summer Institute Award (2002)
    • MRS Graduate Student Award (2002)
    • National Defense Science and Engineering Graduate Fellowship Appointment (1998)


    Orientation of Thin Polyamide Layer-by-Layer Films on Non-Porous Substrates

    Tawanda J. Zimudzi, Sarah E. Sheffield, Kathleen E. Feldman, Peter Beaucage, Dean DeLongchamp, Douglas I. Kushner, Christopher Stafford, Michael A. Hickner
    The orientation of polyamide thin films on non-porous substrates was investigated using Fourier transform infrared (FTIR) spectroscopy and corroborated by near

    Sub-picosecond charge-transfer at near-zero driving force in polymer:non-fullerene acceptor blends and bilayers

    Yufei Zhong, Martina Causa, Gareth J. Moore, Philipp Krauspe, Bo Xiao, Jonas Kublitski, Rishi Shivhare, Johannes Benduhn, Eyal BarOr, Subhrangsu Mukherjee, Kaila Yallum, Julien R?hault, Stefan C. Mannsfeld, Dieter Neher, Lee J. Richter, Dean DeLongchamp, Frank Ortmann, Koen Vandewal, Erjun Zhou, Banerji Natalie, Florian Gunther
    Organic photovoltaics based on non-fullerene acceptors (NFAs) show record efficiency of 16 to 17% and increased photovoltage owing to the low driving force for

    Influence of Polymer Aggregation and Liquid Immiscibility on Morphology Tuning by Varying Composition in PffBT4T-2DT/Non-Fullerene Organic Solar Cells

    Subhrangsu Mukherjee, Dean M. DeLongchamp, Regis J. Kline, Iain McCulloch, Zeinab Hamid, Andrew Wadsworth, Elham Rezasoltani, Sarah Holliday, Mohammed Azzouzi, Anne Guilbert, Yifan Dong, Marios Neophytou, Mark Little, Helen Bristow, Artem Bakulin, James Durrant, Jenny Nelson, Andrew A. Herzing
    The temperature dependent aggregation behavior of PffBT4T polymers used in organic solar cells plays a critical role in the formation of a favorable morphology
    Created March 29, 2019, Updated June 30, 2022