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Monodisperse Oligo(2,5‐dipropoxy‐1,4‐phenyleneethynylene)s
Author(s) -
Ickenroth Dirk,
Weissmann Silke,
Rumpf Norbert,
Meier Herbert
Publication year - 2002
Publication title -
european journal of organic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.825
H-Index - 155
eISSN - 1099-0690
pISSN - 1434-193X
DOI - 10.1002/1099-0690(200208)2002:16<2808::aid-ejoc2808>3.0.co;2-u
Subject(s) - chemistry , dispersity , limiting , sonogashira coupling , fluorescence , polymer chemistry , absorption (acoustics) , stereochemistry , organic chemistry , palladium , catalysis , mechanical engineering , physics , quantum mechanics , acoustics , engineering
Oligo(phenyleneethynylene)s 1 are rod‐like compounds with undisturbed conjugation. In supplementation of the previously described members of this series 1a − e , with repeating units of up to n = 5, this work contains the preparation of higher oligomers 1f − i ( n = 6, 7, 8, 10) through the use of the Sonogashira−Hagihara reaction. Both the absorption and the fluorescence bands showed convergence for increasing values of n , reaching limiting values at the effective conjugation length of n ECL = 10. (© Wiley‐VCH Verlag GmbH, 69451 Weinheim, Germany, 2002)