Insight into the synthesis and fabrication of 5,6-alt-benzothiadiazole-based D–π–A-conjugated copolymers for bulk-heterojunction solar cell

Photoactive benzothiadiazole-N-heterocycle derivatives: synthesis, photophysics and water sensing in organic solvents

“…13 BTD is a typical electron-withdrawing moiety amenable to facile ring modification and the introduction of such fragments into molecules may facilitate electron injection or charge transport and therefore enable fine-tuning of band gaps. In this sense, BTD-based compounds have found applications in OLEDs, [14][15][16][17][18][19] solar cells, [20][21][22] liquid crystals, [23][24][25] as fluorescent biomarkers, [26][27][28][29][30][31][32][33] and mechanochromic dyes. [34][35][36] One way to conjugate the fluorescent BTD scaffold to a variety of structural motifs is through a carbon-nitrogen bond between BTD and an N-heterocycle.…”

“…13 BTD is a typical electron-withdrawing moiety amenable to facile ring modification and the introduction of such fragments into molecules may facilitate electron injection or charge transport and therefore enable fine-tuning of band gaps. In this sense, BTD-based compounds have found applications in OLEDs, 14–19 solar cells, 20–22 liquid crystals, 23–25 as fluorescent biomarkers, 26–33 and mechanochromic dyes. 34–36…”