Conflicts of Interest The authors declare no conflicts of interest. Data Availability Statement The data that support the findings of this study are available from the corresponding author upon reasonable request. Supporting Information Filename Description qua70300-sup-0001-TableS1-S4-FigureS1-S2.docxWord 2007 document , 256.4 KB Table S1: Parameters of bond lengths (Å) and bong angles (Δ°) involved in O1-H2···N3 and O4-H5···N6 for BPDI-O-PT1, BPDI-S-PT1 and BPDI-Se-PT1 in both S0 and S1 states.