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Colin R. Belton, Alexander L. Kanibolotsky, James Kirkpatrick, Clara Orofino, Saadeldin E. T. Elmasly, Paul N. Stavrinou, Peter J. Skabara and Donal D. C. Bradley Location, Location, Location - Strategic Positioning of 2,1,3-Benzothiadiazole Units within Trigonal Quaterfluorene-Truxene Star-Shaped Structures Advanced Functional Materials 23

Article first published online: 17 JAN 2013 | DOI: 10.1002/adfm.201202644

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2,1,3-benzothiadiazole (BT) units are systematically incorporated into star-shaped trigonal molecules comprising a truxene core and three quaterfluorene arms. Five isomers are synthesized corresponding to the symmetric insertion of a single BT unit into each of the possible positions within the arms. Three BT locations are identified by comparison of absorption and photoluminescence (PL) spectra, supported by theoretical calculations. Additional experimental and theoretical characterizations reveal the influence of BT position on Raman, photoluminescence, and stimulated emission properties.

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