The detection of anions with organoborane-based receptors and related polyfunctional organometallic compounds has received tremendous attention over the past several years. The underlying principle is that tricoordinate organoborane moieties are inherently electron-deficient, featuring an empty p-orbital that may either show pi overlap with pendant substituents or, most relevant to sensory applications, reversibly bind Lewis basic substrates.[1] Our group is pursuing the modification of oligomeric and polymeric materials with photo-active organoborane moieties. One of the potential advantages of polymeric sensory systems is that signal amplification effects may be observed.[2] Moreover, dual detection mechanisms become possible upon incorporation of the fluorophores into amphiphilic block copolymer structures.[3] Recent results by our group will be discussed. -- [1] C. R. Wade, A. E. J. Broomsgrove, S. Aldridge, F. P. Gabbäi, Chem. Rev. 2010, 110, 3958-3984. [2] F. Jäkle, Chem. Rev. 2010, 110, 3985-4022. P. Chen, R. A. Lalancette and F. Jäkle, Angew. Chem. Int. Ed. 2012, 51, 7994-7998. H. Li, F. Jäkle, Angew. Chem. Int. Ed. 2009, 48, 2313-2316. K. Parab, Y. Qin, F. Jäkle, J. Am. Chem. Soc. 2006, 128, 12879-12885. [3] F. Cheng, E. M. Bonder, F. Jäkle, J. Am. Chem. Soc. 2013, 135, 17286-17289.

Luminescent organoborane polymers for anion detection

249th National Meeting (2015)

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