Ground broken samplesof complex 1 (2 mg) were soaked in different solvents [methenol,ethenol, N,N′-dimethylacetamide (DMA), nitrobenzene (NB),acetone, DMF, tetrahydrofuran (THF), acetone, acetonitrile(CH 3 CN), o-nitrotoluene (2-NT), and m-nitrotoluene (3-NT)]with an equal volume of 2 mL and treated by ultrasound for 30min, and then the homogeneous suspensions were immediately usedfor luminescence measurement. Detailed detection for aromaticcompounds was performed by gradually adding a 0.1 M methenolsolution of NB, 2-NT, 3-NT, toluene, o-xylene, o-dimethoxybenzene,and ethylbenzene into a cuvette containing 1 (2 mg) immersed inMeOH (2 mL).