Abstract
Abstract Three pulsed laser techniques have been used to evaluate the absorption spectrum of ★Ru(bpy) 3 2+ in H 2 O, CH 3 CN and H 2 O/CH 3 CN mixtures: complete conversion of the ground state, energy transfer to anthracene, and benzophenone actinometry. The three techniques give reliable and reproducible values of ϵ 450 =4.6(±0.4) × 10 3 M −1 cm −1 , independent of the solution medium. The ground state spectrum is virtually the same in H 2 O and CH 3 CN with ϵ 452 = 1.46 × 10 4 M −1 cm −1 ; the value of ϵ 450 , the difference in the ϵ values of the excited and the ground states at 450 nm, is −1.0(±0.09)×10 4 M − cm −1 . Ru(bpy) 3 2+ can serve as a reliable actinometer for the 532 nm frequency doubled Nd:YAG pulsed laser line and, with appropriate corrections for the inner filter effect, for the 355 nm frequency tripled line.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callMore From: Journal of Photochemistry and Photobiology A: Chemistry
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
