On December 31, 2022, Pearce, Nicholas; Reynolds, Katherine E. A.; Kayal, Surajit; Sun, Xue Z.; Davies, E. Stephen; Malagreca, Ferdinando; Schurmann, Christian J.; Ito, Sho; Yamano, Akihito; Argent, Stephen P.; George, Michael W.; Champness, Neil R. published an article.Reference of 1,4-Dimethoxybenzene The title of the article was Selective photoinduced charge separation in perylenediimide-pillar[5]arene rotaxanes. And the article contained the following:
The ability to control photoinduced charge transfer within mols. represents a major challenge requiring precise control of the relative positioning and orientation of donor and acceptor groups. Here we show that such photoinduced charge transfer processes within homo- and hetero-rotaxanes can be controlled through organization of the components of the mech. interlocked mols., introducing alternative pathways for electron donation. Specifically, studies of two rotaxanes are described: a homo[3]rotaxane, built from a perylenediimide diimidazolium rod that threads two pillar[5]arene macrocycles, and a hetero[4]rotaxane in which an addnl. bis(1,5-naphtho)-38-crown-10 (BN38C10) macrocycle encircles the central perylenediimide. The two rotaxanes are characterized by a combination of techniques including electron diffraction crystallog. in the case of the hetero[4]rotaxane. Cyclic voltammetry, spectroelectrochem., and EPR spectroscopy are employed to establish the behavior of the redox states of both rotaxanes and these data are used to inform photophys. studies using time-resolved infra-red (TRIR) and transient absorption (TA) spectroscopies. The latter studies illustrate the formation of a symmetry-breaking charge-separated state in the case of the homo[3]rotaxane in which charge transfer between the pillar[5]arene and perylenediimide is observed involving only one of the two macrocyclic components. In the case of the hetero[4]rotaxane charge separation is observed involving only the BN38C10 macrocycle and the perylenediimide leaving the pillar[5]arene components unperturbed. The experimental process involved the reaction of 1,4-Dimethoxybenzene(cas: 150-78-7).Reference of 1,4-Dimethoxybenzene
The Article related to pillararene peylenediimide rotaxane preparation electron transfer esr, Physical Organic Chemistry: Other Reactions, Processes, and Spectra and other aspects.Reference of 1,4-Dimethoxybenzene
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