The fluorescence spectra (excitation wavelength of 530 nm, emission peak centered at approximately 577 nm) are shown in the top row. The corresponding photo images captured under UV light at 365 nm and day light are presented in the middle and bottom rows, respectively. The full names of HA, OA, Eth, EtOAc, PE, Liq. Paraffin, Dodecyl Chl., DCE, DCM and CTC are given as follows: HA: hexyl alcohol; OA: 1-octanol; Eth: diethyl ether; EtOAc: ethyl acetate; PE: petroleum ether; Liq. Paraffin: liquid paraffin; Dodecyl Chl.: dodecyl chloride; DCE: dichloroethane; DCM: dichloromethane; CTC: carbon tetrachloride.