Dept of Electrical Engineering Yuan Ze University Zhong-Li, Taoyuan, Taiwan 33002 whitejd@saturn.yzu.edu.tw Editor Physics Review B Dear Sir/Madam: Please find attached a copy of our manuscript: “MEH-PPV Photophysics: Insights from the Influence of a nearby 2D Quencher”, Xuan Long Ho, Yu-Han Wang, Po-Jui Chen, Wei-Yen Woon and myself, Jonathon David White. In this work we make use of fluorescence quenching due to graphene to investigate energy transfer in MEH-PPV. We believe that this work will appeal to readers of Physical Review B both due to (1) the introduction of a new experimental technique and (2) the results gained from this technique. The majority of this work was completed by Xuan Long Ho. Yu-Han Wang deposited single layer graphene on glass under the supervision of Prof Wei-Yen Woon. Xuan Long Ho spin coated MEH-PPV onto the prepared substrates and completed all spectral measurements. Po-Jui Chen helped with data acquisition and I (JDW) helped in writing the final paper. Sincerely, Jonathon David White