The photophysical and photodeformation properties of star-shaped Ru (II) motor systems[1,2] containing BODIPY or BODIPY-styryl fragments were investigated in DCM solution and PMMA matrix. Photothermal stability tests show that BODIPY compounds are stable in DCM solution under daily light. However, compounds including BODIPY-styryl fragments can slowly change their structures from trans to cis under daily light. Photophysical investigations indicate that all the compounds are luminescent and that energy transfer occurs from the BODIPY to the BODIPY-styryl fragment. The trans to cis structure change was also studied for the BODIPY-styryl compound by theoretical calculations to explain the photodeformation phenomenon. Finally, photodeformation studies in PMMA matrix show that the BODIPY-styryl system can be a potential candidate for light-driven molecular motors.
Photophysical and Photodeformation Properties of Star-Shaped Ru(II) Motor Systems Containing BODIPY or BODIPY-Styryl Fragments
S Gao;A Venturini;B Ventura;N Armaroli
2022
Abstract
The photophysical and photodeformation properties of star-shaped Ru (II) motor systems[1,2] containing BODIPY or BODIPY-styryl fragments were investigated in DCM solution and PMMA matrix. Photothermal stability tests show that BODIPY compounds are stable in DCM solution under daily light. However, compounds including BODIPY-styryl fragments can slowly change their structures from trans to cis under daily light. Photophysical investigations indicate that all the compounds are luminescent and that energy transfer occurs from the BODIPY to the BODIPY-styryl fragment. The trans to cis structure change was also studied for the BODIPY-styryl compound by theoretical calculations to explain the photodeformation phenomenon. Finally, photodeformation studies in PMMA matrix show that the BODIPY-styryl system can be a potential candidate for light-driven molecular motors.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
