99074-71-2Relevant academic research and scientific papers
An N,N′-diaryl urea based conjugated polymer model system
Ricks, Holly L.,Shimizu, Linda S.,Smith, Mark D.,Bunz, Uwe H. F.,Shimizu, Ken D.
, p. 3229 - 3232 (2004)
An N,N′-diphenyl urea was designed as a model system for aggregation phenomenon in poly(phenyleneethynylenes) (PPEs). The unmethylated N,N′-diphenyl urea adopts an open, unfolded conformation in which the two diphenyl acetylene fluorophores are far enough away, mimicking the unaggregated state. Dimethylation forces the aromatic surfaces together into π-π contact, mimicking the aggregated state of PPEs. Analogous to bulk PPEs, this model system shows dramatic differences in quantum yield between the folded and unfolded states, with the unfolded urea having greater than 400-fold higher fluorescence quantum yield than its folded equivalent.
(4-alkoxypyran-4-yl) substituted arylalkylaryl-, aryalkenylaryl-, and aryalkynylarylurea inhibitors of 5-lipoxygenase
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, (2008/06/13)
Compounds of the structure STR1 wherein W is selected from STR2 where Q is oxygen or sulfur, R6 and R7 are hydrogen or alkyl, or R6 and R7, together with the nitrogen atoms to which they are attached, define a r
