《Mechanochromic Luminescence from Crystals Consisting of Intermolecular Hydrogen-Bonded Sheets》 was written by Sagara, Yoshimitsu; Takahashi, Kiyonori; Nakamura, Takayoshi; Tamaoki, Nobuyuki. HPLC of Formula: 626-02-8 And the article was included in Chemistry – An Asian Journal in 2020. The article conveys some information:
Introduction of functional groups that can form intermol. hydrogen bonds into highly-emissive luminophores is a promising way to induce mechanochromic luminescence. Herein, we report that a 9,10-bis(phenylethynyl)anthracene derivative featuring two amide groups forms green-emissive crystals based on two-dimensional hydrogen-bonded mol. sheets. Mech. grinding changed the emission from green to yellow, owing to a transition from a crystalline to an amorphous phase. IR spectroscopy revealed that mech. stimuli disrupted the linear hydrogen-bonding formation. A thermal treatment recovered the original green photoluminescence. In the experimental materials used by the author, we found 3-Iodophenol(cas: 626-02-8HPLC of Formula: 626-02-8)
3-Iodophenol(cas: 626-02-8) belongs to organic iodides. The carbon-iodine bond is weaker than other carbon-halogen bonds due to the poor electronegative nature of the iodine atom. In general, organic iodides are light-sensitive and turn yellow during storage, owing to the formation of iodine.HPLC of Formula: 626-02-8
Referemce:
Iodide – Wikipedia,
Iodide – an overview | ScienceDirect Topics – ScienceDirect.com