Let¡¯s face it, organic chemistry can seem difficult to learn, HPLC of Formula: C7H10N2O, Especially from a beginner¡¯s point of view. Like 615-05-4, Name is 4-Methoxybenzene-1,3-diamine, molecular formula is amides-buliding-blocks, belongs to amides-buliding-blocks compound. In a document, author is Vinoba, Mad, introducing its new discovery.
Chemical stimulus-responsive tricyanopyrroline-based ICT chromophore as a potential environment-sensitive probe
Tricyanopyrroline (TCP)-based intermolecular charge transfer (ICT) dye 1 was synthesized by incorporating phenothiazine and diphenylamine groups, and it was shown to absorb near-infrared light at 734 nm with a molar extinction coefficient (epsilon(max)) of 1.67 x 10(4) M-1 cm(-1) in toluene, resulting in a broad absorption band ranging from 600 to 900 nm. By combining the properties of the amide (-NHCO-) group of the TCP acceptor with its ICT character, the photophysical properties of 1 were found to be environment-sensitive. Moreover, its absorption profile was significantly dependent on the nature of the solvent; for instance, in CH2Cl2, a lambda(max) value of 781 nm was observed with an optical absorption edge (lambda(onset)) of 1018 nm, whereas the use of DMSO instead of CH2Cl2 led to a significant hypsochromic shift to a lambda(max) value of 532 nm. Nonetheless, an increase in dye concentration caused a significant bathochromic shift in the absorption band, which was ascribable to the self-dimerization of the dye (K-d = (1.26 +/- 0.84) x 10(4) M-1) through intermolecular hydrogen bonding between the amide moieties. The amide unit also served as a binding site for anions to generate a selective colorimetric response in the presence of AcO- and F-. Notably, 1 offers the potential to detect F- quantitatively in commercially available toothpaste. The chemical stimuli-sensitivity of the absorption properties was elucidated through several analytical techniques and theoretical calculations.
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