“…The micro/nano-spherulitic hierarchical 2,2 ,4,4 ,6,6 -hexanitrostilbene has been fabricated, which is promising to solve the problems of nanoscale energetic materials in agglomeration and microscale bulk crystals in low activity [6]. Materials with hierarchical structures could find broad applications in batteries [8], ceramics [9,10], catalysis [11,12], sensors [13,14], the food industry [15], pharmaceutics [16], etc. For example, when the flower-like SnO 2 nanocrystal was used as the photoanode in dye-sensitized solar cells, the photoelectric conversion efficiency could be largely enhanced [8].…”