Synthesis of a Diverse Library of N,N-Dimethylamino Containing Monomers Appropriate as Lipid Head Groups.

We report on the synthesis of a diverse library of N,N-dimethylamino containing monomers. Subjecting these monomers to Chabrier reaction conditions would yield lipids with polymerizable head groups. This library of lipid head groups is equipped with a variety of arm lengths containing reduction-oxidation polymerizable groups at the terminus.

Measuring photochemical kinetics in submonolayer films by transient ATR spectroscopy on a multimode planar waveguide.

Understanding the kinetics of reactions in molecular thin films can aid in the molecular engineering of organic photovoltaics and biosensors. We have coupled two analytical methods, transient absorbance spectroscopy (TAS) and attenuated total reflectance (ATR), in a relatively simple arrangement when compared with previous TAS/ATR instruments to interrogate molecular structure and photochemistry at interfaces. The multimode planar waveguide geometry provides a significant path length enhancement relative to a conventional transmission geometry, making it feasible to perform measurements on low-surface-coverage films.