College of Chemistry, Chemical Engineering and Environmental Engineering, Liaoning Shihua University, Fushun, Liaoning, 113001, China; State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu, Sichuan, 610065, China.
College of Chemistry, Chemical Engineering and Environmental Engineering, Liaoning Shihua University, Fushun, Liaoning, 113001, China.
Spectrochim Acta A Mol Biomol Spectrosc. 2020 Feb 15;227:117680. doi: 10.1016/j.saa.2019.117680. Epub 2019 Oct 20.
Fluorescence is widely used in biology, medicine, and analytical chemistry. The anthracene framework has received considerable attention for the luminescent molecular design as an attractive building unit. Herein, Luminescent "π-p-π" anthracene crystals with different multilayer stacking modes were conducted by experimental methods and theoretical calculations. It was found that "these anthracene derivatives showed strong fluorescence and stability in both solution and solid-state; A face-to-face π-π stacking arrangement dominated in N,N-diphenyl-2,6-bis((trimethylsilyl)ethynyl)anthracene-9,10-diamine (4), while C/N-H … π interactions were observed in the crystal lattice of 2,6-diethynyl-N,N-diphenylanthracene-9,10-diamine (5); The excitation processes of S→S of 4 and 5 belonged to Localized Excitation; The number of photons emitted could be nearly equal to the number of photons absorbed below 120K". This study is expected to assist in the design of photonic materials in the field of optical chemistry.
荧光广泛应用于生物学、医学和分析化学领域。蒽框架作为一种有吸引力的构建单元，在发光分子设计方面受到了相当多的关注。在此，通过实验方法和理论计算，研究了具有不同多层堆积模式的发光“π-p-π”蒽晶体。结果发现，“这些蒽衍生物在溶液和固态中均表现出强荧光和稳定性；N，N-二苯基-2,6-双（（三甲基硅基）乙炔基）蒽-9,10-二胺（4）中存在面对面的π-π堆积排列，而在 2,6-二乙炔基-N，N-二苯基蒽-9,10-二胺（5）的晶格中观察到 C/N-H…π相互作用；4 和 5 的 S→S 激发过程属于局域激发；在 120K 以下，发射的光子数几乎可以等于吸收的光子数”。这项研究有望为光学化学领域的光子材料设计提供帮助。
