Ongoing collaborative work with Professors Daniel R. Gamelin and David S. Ginger at the University of Washington have resulted in two new publications: “Direct Measurement of Acceptor Group Localization on Donor–Acceptor Polymers Using Resonant Auger Spectroscopy” and “Ferromagnetic excited-state Mn2+ dimers in Zn1−xMnxSe quantum dots observed by time-resolved magnetophotoluminescence“.
In the first publication, Phu Nguyen performed density functional calculations to investigate the electronic structure of the LUMO of PCPDTBT and PCDTBT, two similar donor/acceptor-type polymers. These materials are of interest for application in organic photovoltaic devices.
In the second publication, Joseph May performed density functional calculations on ZnSe nanocrystals doped with Mn2+ ions to elucidated the microscopic orbital exchange interactions that give rise to ferromagnetic coupling within photoexcited Mn2+—Mn2+ dimers.