The Self–assembled Dual-Band Room Temperature Phosphorescence Crystals With Grating Morphology Directed by Deoxycholate

9-Bromophenanthrene (9BrP) crystals with a grating morphology and different optical properties were assembled in aqueous medium with sodium deoxycholate (NaDC). The morphology of crystals in the presence of 10 and 2 mmol/L NaDC (named 9BrP–G10 and 9BrP–G2, respectively) is significantly different from that in the absence of NaDC (named 9BrP–NG). XRD, FT-IR, Raman, and 13C NMR spectra prove that NaDC just works as a directing agent in the self-assembly of 9BrP crystals, which makes the Br···Br and H···π distances between 9BrP molecules slightly closer. Host–guest interaction between NaDC aggregate and 9BrP modifies sequentially the crystal morphology in the crystallizing process. In addition, the luminescence colors of 9BrP–G10 and 9BrP–G2 crystals are significantly different from each other as well as from that of the 9BrP–NG crystal, suggesting the luminescent properties of organic molecules can also be modified by adjusting the interaction parameters and the physical morphology. This study highlights th...