Title of article :
Fast transient absorption spectroscopy of the early events in photoexcited chiral benzophenone–naphthalene dyads
Author/Authors :
Perez-Ruiz، نويسنده , , Raul and Groeneveld، نويسنده , , Michiel and van Stokkum، نويسنده , , Ivo H.M. and Tormos، نويسنده , , Rosa and Williams، نويسنده , , René M. and Miranda، نويسنده , , Miguel A.، نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 2006
Pages :
6
From page :
276
To page :
281
Abstract :
Photoinduced intra-molecular energy transfer in two ketoprofen(KP)-naproxol(NPX) diastereomers proceeds via two pathways. Very fast singlet–triplet energy transfer (k = 1.2 × 1011 s−1) from KP to NPX occurs for a small percentage (6%) and the major pathway is triplet–triplet energy transfer (k ∼ 3 × 109 s−1). This was shown with femtosecond transient absorption spectroscopy and global and target analysis. Whereas the NPX triplet decay is strongly stereospecific (ratio of 1.6), the NPX triplet state formation for both dyads is very similar (ratio of 1 for the fast process and 1.2 for the slower process).
Journal title :
Chemical Physics Letters
Serial Year :
2006
Journal title :
Chemical Physics Letters
Record number :
1920223
Link To Document :
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