Table 4. Melting Data for Cyclic Dimers, ff Dimers, and the Controls with 5 μM total DNA Concentration in TAMg Buffer (40 mM Tris Base, 20 mM Acetic Acid, 7.5 mM MgCl₂·6H₂O)^a.

entry	short nameb	Tm (°C)	fwhm (°C)
1	X:X′	49.7 ± 0.1	10.7 ± 0.1
2	control-[5′-C-3′]c	49.9 ± 0.2	8.9 ± 0.1
3	control-[5′-C-5′]	50.4 ± 0.1	8.7 ± 0.1
4	control-[3′-C-3′]	49.6 ± 0.1	8.9 ± 0.1
5	control-[3′-T3CT3-5′]	48.6 ± 0.2	10.0 ± 0.1
6	cyclic-[5′-T3CT3-3′]:[5′-T3CT3-3′]′c	52.6 ± 0.2	7.4 ± 0.1
7	cyclic-[5′-T6-3′]:[5′-T6-3′]′	52.8 ± 0.2	6.7 ± 0.1
8	cyclic-[5′-T6-5′]:[5′-T6-5′]′	53.0 ± 0.1	7.1 ± 0.1
9	cyclic-[5′-T3-3′]:[5′-T3-3′]′	52.4 ± 0.1	7.6 ± 0.1
10	ff-[3′-C-3′]:[5′-C-5′]′c	62.9 ± 0.2	7.3 ± 0.1
11	ff-[3′-C-3′]:[5′-T6-5′]′c	58.2 ± 0.1	7.2 ± 0.1

^aFor accurate comparison to ff dimers, only systems that afford cyclic dimers exclusively are listed.

^bFor details, see Tables 1 and 2.

^cMelting profiles for these systems are shown in Figure 10.