Table 1.

Fitting parameters and fraction F₂ of the long-living state

Oligonucleotide	τ0/ps	τ1/ps	τ2/ps	Fraction F2
mC + A + U	1.2	5
mCA	1.3	6	110	0.25
mCU	1.2	6	50	0.23
mCG	1.5	3	20
GA	1.7	3	300
mCAU	0.7	6	120	0.29
mCUA	1.1	6	90	0.24
AmCU	1.4	10	150	0.45
UmCA	0.7	8	110	0.32
mCAUUUU	1.3	6	170	0.34
mCUAUUU	1.4	8	120	0.27
mCUUAUU	1.6	5	110	0.32
mCUUUAU	2.0	5	90	0.30
mCUUUUA	1.7	6	100	0.28
mCUUUU	1.3	6	80	0.24

All experiments were measured in two independent experiments; time constants are an average of both experiments. Selective excited base is shown in bold. For samples with selective excitation of mC, the fraction F₂ was calculated. The trend of F₂ is reproduced in the two independent experiments.