“…Studies of this compound has been centered on the structure [8][9][10][11], reactivity [12][13][14][15], vibrational spectroscopy [16], synthesis and characterization of intercalation compounds with different cationic species [17][18][19], diffusion and protonic conductivity mechanism [20][21][22][23][24][25][26][27][28], and chemisorption properties of HUP bound to biomass of bacteria [29][30][31][32][33]. Photoluminescence properties [34][35][36][37][38][39], have also been investigated in the literature, but they are not analyzed in terms of restricted geometry [40][41][42][43][44][45][46][47][48][49][50][51][52]. In this paper we report the characterization of four HUP intercalation compounds with aminium cations by timeresolved luminescence spectroscopy, and the results are analyzed by taking into account a model of reaction...…”