![]() ![]() Photoexcitation of the ordered films results in initial formation of a spin-correlated radical ion pair (electron–hole pair) as indicated by magnetic field effects on the formation of free charge carriers which live for ∼4 μs. In contrast, upon CH 2Cl 2 vapor annealing films of 1, grazing-incidence X-ray scattering shows that the molecules form a more ordered structure. The absence of long-lived, charge separation in the disordered film suggests that few free charge carriers are generated. ![]() Photoexcitation of 1 in toluene results in quantitative charge separation in τ = 3.1 ± 0.2 ps, with charge recombination in τ = 340 ± 10 ps, while in unannealed/disordered films of 1, charge separation occurs in τ < 250 fs, while charge recombination displays a multiexponential decay in ∼6 ns. The photophysics of a covalently linked perylenediimide–diketopyrrolopyrrole–perylenediimide acceptor–donor–acceptor molecule (PDI–DPP–PDI, 1) were investigated and found to be markedly different in solution versus in unannealed and solvent annealed films. This result has significant implications for the design of organic solar cells based on covalent donor-acceptor systems and shows that long-lived, charge-separated states can be achieved by controlling intramolecular charge separation dynamics in well-ordered systems. Photoexcitation of the ordered films results in initial formation of a spin-correlated radical ion pair (electron-hole pair) as indicated by magnetic field effects on the formation of free charge carriers which live for ∼4 μs. Photoexcitation of 1 in toluene results in quantitative charge separation in τ = 3.1 ± 0.2 ps, with charge recombination in τ = 340 ± 10 ps, while in unannealed/disordered films of 1, charge separation occurs in τ 2Cl2 vapor annealing films of 1, grazing-incidence X-ray scattering shows that the molecules form a more ordered structure. We're not happy if you're not happy - if there's anything at all we can do to improve your browsing and purchasing experience please contact us and let us know what we can do to meet your needs.The photophysics of a covalently linked perylenediimide-diketopyrrolopyrrole-perylenediimide acceptor-donor-acceptor molecule (PDI-DPP-PDI, 1) were investigated and found to be markedly different in solution versus in unannealed and solvent annealed films. Our sales and technical team at Industrial Tech Supply will do everything possible to make sure you find exactly what you need at the right price. And if you're in a hurry use our convenient inventory search to quickly find exactly what you're looking for. Once you see what we have to offer we know you'll agree that no other site offers such a comprehensive and well-organized selection of economically priced equipment and tools. Our association with ebay allows us to provide you with the best possible selection of affordably priced tools available for sale from a variety of trustworthy sellers.Įxplore our exhaustive list of venerable and trusted top-tier equipment brands and manufacturers to find all of the instruments and tools that you're looking for. With such a substantial spectrum of manufacturers and brands to explore and choose from you need you're certain to find the equipment you need for a price that you'll be very happy with. We strive to offer industrial technology solutions for everyone - brand new equipment for those whose business finances allow it and discount-priced refurbished and pre-owned tools for those on more restrictive budgets. And if you're looking to save money on your purchase (and who isn't right?) we can definitely lend a hand there as well with our remarkably massive lineup of affordably priced new, used and refurbished equipment. If you're looking for high-tech test equipment, biomedical, scientific and chemical analysis solutions, audio and video analysis hardware, programmable logic controllers, or any other kind of state-of-the-art test, measurement and analysis solutions - all from the world's premier equipment manufacturers - you'll find everything you require here at Industrial Tech Supply. Industrial Tech Supply offers an unequalled selection of advanced technological solutions for a wide range of industrial, scientific and other high-tech applications. ![]()
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