Leduskrasts Kaspars, Suna Edgars
Latvian Institute of Organic Synthesis Aizkraukles 21 LV-1006 Riga Latvia
RSC Adv. 2020 Oct 15;10(62):38107-38113. doi: 10.1039/d0ra07137d. eCollection 2020 Oct 12.
Protonation of pyridines with a strong acid is a general and straightforward approach to achieve efficient aggregation induced emission (AIE) in structurally remarkably simple organic molecules that lack any of the conventional luminophores. The relationship between the nature of counter ion and the AIE efficiency is demonstrated. The superiority of the perchlorate counter ion is attributed to efficient stabilization of the key intermolecular π-π interactions between neighboring luminophore molecules in the crystal lattice.
用强酸使吡啶质子化是一种通用且直接的方法，可在结构非常简单且缺乏任何传统发光体的有机分子中实现高效的聚集诱导发光（AIE）。本文展示了抗衡离子的性质与AIE效率之间的关系。高氯酸根抗衡离子的优势归因于其能有效稳定晶格中相邻发光体分子之间关键的分子间π-π相互作用。
