Pyrene as chromophore and electrophore: encapsulation in a rigid polyphenylene shell

S Bernhardt, M Kastler, V Enkelmann…

Index: Bernhardt, Stefan; Kastler, Marcel; Enkelmann, Volker; Baumgarten, Martin; Muellen, Klaus Chemistry - A European Journal, 2006 , vol. 12, # 23 p. 6117 - 6128

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Citation Number: 100

Abstract

Abstract Starting from the fourfold ethynyl-substituted chromophore 1, 3, 6, 8- tetraethynylpyrene as core, a series of polyphenylene dendrimers was prepared in high yield by combining divergent and convergent growth methods. The fluorescence quantum yields (Q f> 0.92) of the encapsulated pyrene chromophore were independent of the size of the polyphenylene shell. Fluorescence quenching studies and temperature-dependent ...