Celebrating Covers
Congratulations to Alexander J. Kendall and Michael T. Mock
"Dinitrogen Activation and Functionalization with Chromium (Eur. J. Inorg. Chem. 15‐16/2020)"
The article can be found at https://doi.org/10.1002/ejic.202000341
The Cover Feature below shows a “chromium cowboy” wrangling dinitrogen in one of the many scenic valleys of Montana, USA. This Minireview provides a comprehensive analysis of dinitrogen coordination chemistry and molecular catalytic systems using chromium for the activation and functionalization of dinitrogen. Historically, chromium does not readily form N2 coordination compounds like the other group 6 metals. Recent advances in the field of Cr‐N2 chemistry have begun to illuminate this elusive relationship. Special thanks to Ms. Rachel Stephens for composing the wonderfully scenic cover graphic.
Congratulations to Geoffrey Piland and Erik Grumstrup receiving the cover article in JPCA.
The article, "High-Repetition Rate Broadband Pump–Probe Microscopy" can be found at
https://pubs.acs.org/doi/10.1021/acs.jpca.9b03858.
Abstract: Pump–probe microscopy has recently emerged as an important tool for characterizing the effects of nanoscale chemical and compositional heterogeneity on the optoelectronic properties of material systems. This article describes the development of broadband pump–probe microscopy, which utilizes a high-speed line camera and high repetition rate amplified fiber laser to collect full transient spectra at 30+ kHz and with sub 100 fs temporal resolution. The broadband imaging and spectroscopic capabilities of the technique are demonstrated on individual micron-sized lead halide perovskite domains. Also discussed are several challenges associated with collecting broadband transient spectra from sub-micron sample areas, including the importance of careful design of imaging optics to minimize the effects of spherical and chromatic aberrations, detector considerations, and the importance of spot size effects on absolute signal size.
Celebrating the 100th Anniversary of the Langmuir Equation
This week, the cover of Langmuir has been designed by Erin E. Hanson (Ph.D. graduate student in the Stadie Group) to commemorate the centennial anniversary of Langmuir's equation for interfacial adsorption. We imagine what Dr. Langmuir's chalkboard might have looked like had he measured gas adsorption isotherms on metal-organic frameworks instead of glass, mica, and platinum. For more information about the cover, see https://pubs.acs.org/toc/langd5/35/41 and for a review of Langmuir's legacy on the science of interfaces, see “Langmuir's Theory of Adsorption: A Centennial Review” by Hans Swenson and Nicholas P. Stadie (https://pubs.acs.org/doi/10.1021/acs.langmuir.9b00154).
