Aggregation-induced near-infrared absorption of a pillar[5]arene trimer by charge transfer interaction

作者：Liu, Lu-Zhi^*; Qin, Xue; Duan, Wen-Gui^*; Huang, Hong-Fei; Zhang, Wen-Xue; Zhou, Qing-Qing; Huang, Yan^*

来源：Dyes and Pigments, 2018, 158: 390-395.

DOI：10.1016/j.dyepig.2018.05.074

• Tris-pillar[5]arene
• Self-assembly
• NIR absorption
• H-bonding

A series of pillar[5]arene receptors 1a-1d, containing mono-, bis- and tris-pillar[5] arene frames, are synthesized, and their host-guest complexation with 1,4-butanediamine center dot HCl (BDH)and tris(2-aminoethyl)amine center dot HCl (TAH) are studied by NMR, UV-vis absorption, scanning electron microscopy (SEM) and transmission electron microscopy (TEM). Benzene-1,3,5-trispillar[5]arene 1a exhibits effective cooperativity and forms supramolecular polymers with electron acceptors BDH and TAH, respectively. Interestingly, driven by charge transfer interaction in 1a-BDH and 1a-TAH systems, a newly remarkable aggregation-induced absorption (AIA) in the visible to near IR regions (400-1100 nm) is observed. However, pillar[5]arenes 1b-1d do not show such AIA character.

• 出版日期2018-11
• 单位广西大学