Transforming a Fluorochrome to an Efficient Photocatalyst for Oxidative Hydroxylation: A Supramolecular Dimerization Strategy Based on Host-Enhanced Charge Transfer was written by Tang, Bohan;Xu, Weiquan;Xu, Jiang-Fei;Zhang, Xi. And the article was included in Angewandte Chemie, International Edition in 2021.HPLC of Formula: 626-64-2 This article mentions the following:
The development of non-covalent synthetic strategy to fabricate efficient photocatalysts is of great importance in theranostic and organic materials. Herein, a fluorochrome N,N′-dimethyl 2,5-bis(4-pyridinium)thiazolo[5,4-d]thiazole diiodide (MPT) was transformed into an efficient photocatalyst through supramol. dimerization in the cavity of cucurbit[8]uril (CB[8]). The host-enhanced charge transfer interaction within the supramol. dimer 2MPT-CB[8] dramatically promoted intersystem crossing to produce triplet. In addition, the staggered conformation of 2MPT-CB[8] facilitated the energy transfer and electron transfer of the triplet. As a result, 2MPT-CB[8] could serve as a high-efficiency photocatalyst for the oxidative hydroxylation of arylboronic acids. This supramol. dimerization strategy enriches the supramol. engineering of functional π-systems. It is anticipated that this strategy can be extended to fabricate various π-systems with tailor-made functions. In the experiment, the researchers used many compounds, for example, Pyridin-4-ol (cas: 626-64-2HPLC of Formula: 626-64-2).
Pyridin-4-ol (cas: 626-64-2) belongs to pyridine derivatives. Pyridine has a dipole moment and a weaker resonant stabilization than benzene (resonance energy 117 kJ·mol−1 in pyridine vs. 150 kJ·mol−1 in benzene). One of the examples of pyridines is the well-known alkaloid lithoprimidine, which is an A3 adenosine receptor antagonist and N,N-dimethylaminopyridine (DMAP) analog, commonly used in organic synthesis.HPLC of Formula: 626-64-2