Please join us for another MAS webinar! Donovan Leonard, Senior Technical Staff Member at Oak Ridge National Laboratory, and long-time MAS member will talk about RNA Mediation of Pd Metal-Metal Bonds and his role in correcting the scientific record.
The live webinar will consist of a 50-minute presentation, followed by a Q&A. The webinar is free but requires a registration.
When: September 22, 2020 at 2 p.m. EDT.
Webinar description: Microscopy is often a highly collaborative endeavor and the microscopist may work with researchers in fields outside of their own. Occasionally, the scientific vocabulary is different and technical details of samples for microscopy and microanalysis obscure, yet the common goal of discovery and gaining new knowledge are motivations to collaborate.
For this webinar, I will present data [1-4] and personal commentary on a case of mistaken microscopy involving SEM, S/TEM, SAED, EDS, EELS, and control experiments that resulted in an NSF Office of Inspector General investigation and ended with an editorial retraction from Science Magazine  of an original paper titled “RNA-mediated metal-metal bond formation in the synthesis of hexagonal palladium nanoparticles”.
In short, control experiments showed RNA played no role in producing hexagonal platelets reported as Pd metal. Instead, indexed SAED proved molecular crystals of the precursor Pd2DBA3, used in the original claim of RNA mediation , was precipitating out of solution and occurred with or without the presence of RNA.
The presentation will conclude with comments on what role, for me as a graduate student, the Microanalysis Society (MAS) played in mentorship and free exchange of material characterization expertise.
 Franzen, Stefan, Marta Cerruti, Donovan N. Leonard, and Gerd Duscher. Journal of the American Chemical Society 129, 15340 (2007).
 Leonard, Donovan N., Marta Cerruti, Gerd Duscher, and Stefan Franzen. Langmuir 24, 7803 (2008).
 Leonard, D. N., and S. Franzen. The Journal of Physical Chemistry C 113, 12706 (2009).
 Franzen, Stefan. Journal of Chemical Education 88, 619(2011).
 M. McNutt, Science 351, 569 (2016).
 L.A. Gugliotti, D.L. Feldheim, B.E. Eaton, Science 304, 850 (2004).
 https://www.newsobserver.com/news/local/education/article53683020.html; Well written News & Observer 3 part series on RNA mediation retraction (a digestible alternative to scientific manuscripts -, ) with details put into context and chronological order.
Keywords: SEM, S/TEM, SAED, EDS, EELS