Analytical / General Interest / Physical

The ChemCam Instrument Suite on the Mars Science Laboratory Rover Curiosity: Remote Sensing by Laser-Induced Plasmas

Title: The ChemCam Instrument Suite on the Mars Science Laboratory Rover Curiosity: Remote Sensing by Laser-Induced Plasmas Authors: Wiens, R. C., S. Maurice, and the ChemCam Team Journal: Geochemical News Affiliations: Los Alamos National Laboratory (USA), Institute de Recherche en Astrophysique et Planetologie (France) Take Home Importance According to Authors: The ChemCam is the first laser-induced breakdown spectrometer to be used in … Continue reading

Thanksgiving chemistry- cranberries and your blood
Analytical / Biological / Food Chemistry / General Interest / Organic

Thanksgiving chemistry- cranberries and your blood

To do the biological study of how particular (good) chemicals like antioxidants affect people, there needs to be a quick, reliable, and consistent way to measure those chemicals in humans. Furthermore, a good method would test for multiple chemicals, because the health benefits from some chemicals only exist in the presence of others (phenolic acids and flavonoids in this case). The authors of this paper demonstrate a gas-chromatography mass-spectrometry (GC-MS) method to investigate how some of the chemicals present in cranberries (from cranberry juice) go into your bloodstream after you ingest them. Continue reading

Materials

Shrinky-Dink Science

Title: Self-folding of polymer sheets using local light absorption Authors: Ying Liu, Julie K. Boyles, Jan Genzer and Michael D. Dickey Journal: Soft Matter Affiliation: Department of Chemical and Biomolecular Engineering, North Carolina State University As a kid you may have played with Shrinky-Dinks.  I remember drawing, coloring and cutting up the thin flexible sheets … Continue reading

General Interest / Materials / Nanotechnology

Continuous in situ generation and reaction of phosgene in a microflow system

Title:  Continuous in situ generation and reaction of phosgene in a microflow system Authors:  Shinichiro Fuse, Nobutake Tanabe, and Takashi Takahashi* Journal:  Chemical Communications Affiliation:  Department of Applied Chemistry, Tokyo Institute of Technology, Tokyo, Japan. Take-Home Importance according to the Authors:  Continuous in situ generation of phosgene and its use in acid chloride formation in … Continue reading

Materials / Organic / Physical

Stack Exchange Strategies for the Synthesis of Covalent Double-Channel Photosystems by Self-Organizing Surface-Initiated Polymerization

Title: Stack Exchange Strategies for the Synthesis of Covalent Double-Channel Photosystems by Self-Organizing Surface-Initiated Polymerization Authors:  N. Sakai and S. Matile Journal: Journal of the American Chemical Society Affiliation: University of Geneva, Geneva, Switzerland Take Home Importance: Well-ordered polymeric ‘columns’ of different chromophores in the same polymer were prepared and demonstrated to have higher photocurrents when both electron … Continue reading

Inorganic / Nanotechnology / Physical

Molecular-scale versions of diodes invert “normal” diode behavior

Article Title: Inverse Rectification in Donor-Acceptor Molecular Heterojunctions Authors:  Shannon K. Yee, Jibin Sun, Pierre Darancet, T. Don Tilley, Arun Majumdar, Jeffrey B. Neaton,  and Rachel A. Segalman Journal: ACS Nano Affiliation: University of California- Berkeley: Department of Mechanical Engineering, Department of Chemical and Biomolecular Engineering, Department of Chemistry. Molecular Foundry at Lawrence Berkeley National Lab. U.S. … Continue reading