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InnoCentive Challenges: Chemistry

Friday, 12 July 2013

Free for Chemweb members:Strategies for CO2 capture in microporous organic polymers is reviewed by a team of distinguished research chemists


Robert Dawson, Prof. Andrew I Cooper and Dave J Adams review the design and use of microporous polymers for pre- and post-combustion capture of CO2.

-Microporous organic polymers are promising candidates for CO2 capture materials due to their good physicochemical stabilities and high surface areas.
-They predict that ultrahigh-surface-area microporous organic polymers are good candidates for use in pre-combustion capture, while networks with lower surface areas but higher heats of sorption for CO2 might be more relevant for lower pressure, post-combustion capture.
- In their paper "Chemical functionalization strategies for carbon dioxide capture in microporous organic polymers"made available for free via ChemWeb the authors discuss strategies for enhancing CO2 uptakes including increasing surface area, chemical functionalization to provide high-enthalpy binding sites and the potential for pore size tuning.

REFERENCES:
1. Chemical functionalization strategies for carbon dioxide capture in microporous organic polymers (pdf)

2. Learn more about Polymer Functionalization
 Introduction to Polymer Functionalization: Motivations, Yield, Crystallinity, Solubility Issues, Common
Functionalization Approaches  (pdf) by Prof. Paula Hammond .

Sunday, 7 July 2013

Latest News on Raman Spectrometry now reaches the single molecule level, publised in Nature 06 June 2013

Chemical mapping of a single molecule by plasmon-enhanced Raman scattering was accomplished by an international team of researchers from China, Spain, and Sweden:
Hefei National Laboratory for Physical Sciences at the Microscale, University of Science and Technology of China, Material Physics Center CSIC-UPV/EHU and Donostia International Physics Center DIPC,  Spain,Theoretical Chemistry and Biology, School of Biotechnology, Royal Institute of Technology, Sweden.
Let me underline the scientific approach to ethics and probity as :
Competing financial interests:The authors declare no competing financial interests.



Figure 1.   Schematic drawing of our home-built experimental setup.
This setup is composed of four sub-systems: 1.  a laser source for light excitation, a dark-box for optical filtering and alignment, 2. low-temperature ultrahigh-vacuum (UHV) scanning tunneling microscope (STM) for sample preparation and characterization with 3. a built-in lens for both light excitation and collection, and 4.  a spectrometer equipped with a highly sensitive CCD detector for Raman spectral measurements.

REFERENCE:


Nature,
498,82–86 (06 June 2013) doi:10.1038/nature12151