Orthogonal, Synergistic and Cooperative Precision Photochemistry for Multi-Wavelength Additive Manufacturing

Over the last decade, our laboratory has employed monochromatic tunable laser systems to reveal a fundamental mismatch between the absorptivity of a chromophore and its photochemical reactivity in the vast majority of covalent bond forming reaction as well as specific bond cleavage reactions. Our data overturns the long-held paradigm that effective photochemical reactions are obtained in situations where there is strong overlap between the absorption spectrum and the emission wavelength. The lecture will demonstrate how a detailed action-plot driven precision mapping of photochemical reactivity enables the design of advanced multi-colour network formation and 3D printing modes with never-before-seen precision, exploiting wavelength orthogonal, synergistic, cooperative, and antagonistic photochemical reaction systems.<br/><br/><b>Selected References</b><br/><br/>Gauci, S. C.; Vranic, A.; Blasco, E.; Bräse, S.; Wegener, M.; Barner-Kowollik, C<i>. Adv. Mater. </i><b>2023</b>, 2306468.<br/>Gauci, S. C.; Du Prez, F. E.; Holloway J. O.; Houck, H. A.; Barner-Kowollik, C. <i>Angew. Chem. Int. Ed.</i>, <b>2023</b>, e202310274.<br/>Thai, D. L.; Guimarães, T. R.; Chambers, L. C.; Kammerer, J. A.; Golberg, D.; Mutlu, H.; Barner-Kowollik, C. <i>J. Am. Chem. Soc.</i> <b>2023</b>, <i>145</i>, 14748.<br/>Walden, S. L.; Rodrigues, L. L.; Alves, J.; Blinco, J. P.; Truong, V. X.; Barner-Kowollik, C<i>. Nat. Comm.</i><b> 2022</b>, <i>13</i>, 2943.<br/>Nardi, M.; Blasco, E.; Barner-Kowollik, C. <i>J. Am. Chem. Soc.</i> <b>2022</b>, <i>144</i>, 1094.<br/>Kodura, D.; Rodrigues, L. L.; Walden, S. L.; Goldmann, A. S.; Frisch, F.; Barner-Kowollik, C. <i>J. Am. Chem. Soc.</i> <b>2022</b>, <i>144</i>, 6343.<br/>Walden, S. L.; Rodrigues, L. L.; Alves, J.; Blinco, J. P.; Truong, V. X.; Barner-Kowollik, C. <i>Nat. Comm.</i> <b>2022</b>, <i>13</i>, 2943.<br/>Irshadeen, I.M.; Walden, S.L.; Wegener, M.; Truong, V.X.; Frisch, H.; Blinco, J.P.; Barner-Kowollik, C. <i>J. Am. Chem. Soc.</i> <b>2021</b>, <i>143</i>, 21113.<br/>Menzel, J.P.; Noble, B.B.; Blinco, J.P.; Barner-Kowollik, C. <i>Nat. Comm.</i> <b>2021</b>, <i>12</i>, 1691.<br/>Rodrigues, L. L; Micallef, A. S.; Pfrunder, M.; Truong, V.X.; McMurtrie, J. C.; Dargaville, T.R.; Goldmann, A. S.; Feist, F.; Barner-Kowollik, C. <i>J. Am. Chem. Soc.</i> <b>2021</b>, <i>143</i>, 7292.<br/>Kodura, D.; Houck, H. A.; Bloesser, F. R.; Goldmann, A. S.; Du Prez, F. E.; Frisch, H.; Barner-Kowollik, C. <i>Chem. Sci.</i> <b>2021</b>, <i>12</i>, 1302.<br/>Kalayci, K.; Frisch, H.; Truong, V. X.; Barner-Kowollik, C. <i>Nat. Comm.</i> <b>2020</b>, <i>11</i>, 4193.<br/>Houck, H. A.; Blasco, E.; Du Prez, F. E.; Barner-Kowollik, C. <i>J. Am. Chem. Soc.</i> <b>2019</b>, <i>141</i>, 12329.<br/>Bialas, S.; Michalek, L.; Marschner, D. E.; Krappitz, T.; Wegener, M.; Blinco, J. P.; Blasco, E.; Frisch, H.; Barner-Kowollik, C. <i>Adv. Mater.</i> <b>2019</b>, <i>31</i>, 1807288.