4, 4-Difluoro-4-bora-3a, 4a-diaza-s-indacene (BODIPY) dyes modified for extended conjugation and restricted bond rotations

J Chen, A Burghart, A Derecskei-Kovacs…

Index: Chen, Jiong; Burghart, Armin; Derecskei-Kovacs, Agnes; Burgess, Kevin Journal of Organic Chemistry, 2000 , vol. 65, # 10 p. 2900 - 2906

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Citation Number: 232

Abstract

Five new, constrained, aryl-substituted 4, 4-difluoro-4-bora-3a, 4a-diaza-s-indacene (BODIPY) dyes (3f, g and 4h-j) were prepared and investigated to see if they have more favorable fluorescence characteristics than the unconstrained systems 2 that were prepared in previous studies. Dye types 3 and 4 have relatively rigid conformations caused by the heteroatom (3f and 3g) or ethylene bridge (4h-j) linkers that preclude free rotation of the ...