Spectroscopic properties of alkanolamine (QOH) and iminium (Q+) forms of QBAs.

Where two results were obtained (pKROH by two methods, two lifetimes), second value is indicated in brackets.a) all QBAs except macarpine ref. [30].b) this work, spectrophotometry, n = 3, SE = 0.02c) this work, spectrofluorometry, n = 3, SE = 0.06d) n = 4, estimated RSD ca. 15%e) n = 3, SE ≤ 0.1 nsf) 3.3 ns (ref. [22])g) 3.5 ns (610 nm)h) 5.8 ns (610 nm)i) 2.4 ns (ref. [22])Spectroscopic properties of alkanolamine (QOH) and iminium (Q+) forms of QBAs.