The paper I read was "Lewis Acidity of Organofluorophosphonium Salts: Hydrodefluorination by a Saturated Acceptor that was published in Science. The second one is the "perspective" by F.Gabbai in the same issue.
Caputo, C. B.; Hounjet, L. J.; Dobrovetsky, R.; Stephan, D. W., Lewis Acidity of Organofluorophosphonium Salts: Hydrodefluorination by a Saturated Acceptor. Science 2013, 341 (6152), 1374-1377.
Gabbaï, F. P., Lewis Acids with a Difference. Science 2013, 341 (6152), 1348-1349.
I pretty much knew nothing about hydrodefluorination until I read these papers. Now I know some. Really difficult research but it's not very popular yet. So, there is a lot of opportunities in this area of research.
Whittlesey, M. K.; Peris, E., Catalytic Hydrodefluorination with Late Transition Metal Complexes. ACS Catalysis 2014, 4 (9), 3152-3159