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Electron hole (radical cation) migration in DNA, where the quantum transport of an injected charge is gated in a correlated manner by the thermal motions of the hydrated counterions, is described… (More)
During the past decade, long-range radical cation migration in DNA has been an area of extensive experimental and theoretical examination. The motivations for the vigorous investigation of this topic… (More)
— We describe the synthesis and photophysical studies, including measurements of quantum yields of triplet excited states and singlet oxygen generation of… (More)
In this Account strategies using zeolites as media to achieve chiral induction are presented. Diastereomeric excesses as high as 90% and enantiomeric excesses up to 78% have been obtained with… (More)
The synthesis and properties of a new class of photoresponsive coumarin polyesters are described. Incorporation of the coumarin chromophore in the polymer chain provides interesting properties such… (More)
The anthraquinone (AQ) photosensitized one-electron oxidation of DNA introduces a radical cation (electron "hole") that migrates through the duplex by hopping. The radical cation normally is trapped… (More)
We report the design and development of a new class of alkoxyphenacyl based photodegradable polycarbonates. These polymers incorporate the photoactive moiety in the backbone and, when irradiated at… (More)
Moderate enantioslectivity has been achieved on two photochemical reactions that involve molecules reacting from spin forbidden excited states. Zeolite is found to be a unique medium in this context.
The efforts of chemists during the past few decades have advanced the field of thermal asymmetric synthesis to a great extent . Complex molecules can now be synthesized as single enantiomers.… (More)