monitoring the formation of amyloid oligomers using photoluminescence anisotropy the formation of oligomeric soluble aggregates is related to the toxicity of amyloid peptides and proteins in this manuscript we report the use of a ruthenium polypyridyl complex rubpy2dpqp2 to track the formation of amyloid oligomers at different times using photoluminescence anisotropy this technique is sensitive to the rotational correlation time of the molecule under study which is consequently related to the size of the molecule rubpy2dpqp2 presents anisotropy values of zero when free in solution due to its rapid rotation and long lifetime but larger values as the size and concentration of amyloid a oligomers increase our assays show that a forms oligomers immediately after the assay is started reaching a steady state at 48 h sdspage dls and tem were used to confirm and characterize the formation of oligomers our experiments show that the rate of formation for a oligomers is temperature dependent with faster rates as the temperature of the assay is increased the probe was also effective in monitoring the formation of synuclein oligomers at different times