Muramatsu, Tatsuya; Okado, Yuji; Traeger, Hanna; Schrettl, Stephen; Tamaoki, Nobuyuki; Weder, Christoph; Sagara, Yoshimitsu published an article in Journal of the American Chemical Society. The title of the article was 《Rotaxane-Based Dual Function Mechanophores Exhibiting Reversible and Irreversible Responses》.Application of 583-69-7 The author mentioned the following in the article:
Mechanochromic mechanophores permit the design of polymers that indicate mech. events through optical signals. Here we report rotaxane-based supramol. mechanophores that display both reversible and irreversible fluorescence changes. These responses are triggered by different forces and are achieved by exploiting the mol. shuttling function and force-induced dethreading of rotaxanes. The new rotaxane mechanophores are composed of a ring featuring a luminophore, which is threaded onto an axle with a matching quencher and two stoppers. In the stress-free state, the luminophore is preferentially located in the proximity of the quencher, and the emission is quenched. The luminophore slides away from the quencher when a force is applied and the fluorescence is switched on. This effect is reversible, unless the force is so high that the luminophore-carrying ring slips past the stopper and dethreading occurs. We show that the combination of judiciously selected ring and stopper moieties is crucial to attain interlocked structures that display such a dual response. PU elastomers that contain such doubly responsive rotaxanes exhibit reversible fluorescence changes over multiple loading-unloading cycles due to the shuttling function, whereas permanent changes are observed upon repeated deformations to high strains due to breakage of the mech. bond upon dethreading of the ring from the axle. This response allows one, at least conceptually, to monitor the actual deformation of polymer materials and examine mech. damage that was inflicted in the past on the basis of an optical signal. In the experiment, the researchers used 2-Bromobenzene-1,4-diol(cas: 583-69-7Application of 583-69-7)
2-Bromobenzene-1,4-diol(cas: 583-69-7) belongs to organobromine compounds.Depending on the type of carbon to which the bromine is bonded, organic bromide could be alkyl, alkenyl, alkynyl, or aryl. Application of 583-69-7 Alkyl bromides are mainly used as alkylating agents and also find application as a solvent to extract oil from seeds and wool.
Referemce:
Bromide – Wikipedia,
bromide – Wiktionary