Association constants, K_a (M⁻¹), for trans and cis isomers of templates Azo, mAzo, and ipAzo with α-, β-, and γ-CD.

	K a a (M−1)
	α-CD	β-CD	γ-CD
Trans-Azo	8100 ± 600	1800 ± 100	260 ± 30
Cis-Azo	500 ± 100	2800 ± 100	180 ± 20
Trans-mAzo	140 ± 40	420 ± 150	b
Cis-mAzo	50 ± 30	270 ± 100	b
Trans-ipAzo	170 ± 20	74 ± 9	b
Cis-ipAzo	33 ± 13	220 ± 80	2000 ± 300

^aDetermined at 25 °C in 100 mM sodium phosphate buffer in D₂O at pH 7.5.

^bThe binding affinity was too weak to quantify.