1. Molecules in Motion: From Sub-Nanoscale to Macroscale.
- Author
-
Jin, Yuhuan and Rack, Jeffrey J.
- Subjects
- *
NANOCHEMISTRY , *MOLECULES , *RUTHENIUM compounds , *POLYPYRIDINES , *METAL complexes , *SULFOXIDES , *LIGANDS (Chemistry) , *PHOTOCHROMIC materials - Abstract
Ruthenium polypyridine complexes comprising sulfoxide ligands show dramatic photochromic behavior based on phototriggered S→O and O→S isomerization. Quantum yields of isomerization can be large, indicating that the excited-state bond-breaking and bond-making reactions are efficient. Ultrafast transient absorption spectroscopy reveals both adiabatic and non-adiabatic isomerization mechanisms. Incorporation of these complexes within polymer matrices leads to macroscopic bending of the polymer in an example of a direct transduction of photonic energy to mechanical energy. [ABSTRACT FROM AUTHOR]
- Published
- 2013
- Full Text
- View/download PDF