Table 3. Antenna effect and end-to-end efficiency for the four-/five-dye photonic wire and dendrimer systems.

			Relative Förster distance
			0.5 × R0*,†	1.0 × R0	1.5 × R0
Construct	Wires‡/Cy5.5	εCy3n/εCy5.5§	AE/E (%)	AE/E	AE/E
Linear	1	0.8	1.8/16	0.5/4	0.2/2
Bifurcated	2	1.6	2.9/14	0.9/7	0.1/1
Holliday junction	4	3.2	1.1/9	0.7/9	0.2/3
Eight-arm star	8	6.3	1.1/6	0.8/6	0.3/2
Four-dye	Cy3/Cy5.5	—	—	—	—
2:1 dendrimer	8	6.3	2.2/17	(Cy3.5—ester)
2:1 dendrimer	8	6.3	3.5/28	(Cy3.5—phosphoramidite)
3:1 dendrimer	27	21.3	3.9/23	—	—
4:1 dendrimer	64	50.5	1.6/8	—	—
Five-dye dendrimer	AF488/Cy5.5	εAF488n/εCy5.5||	—	—	—
2:1 (Cy5)¶	16	6	1.8/19	—	—
2:1(AF647)¶	16	6	1.4/16	—	—

AE, antenna effect; E, end-to-end efficiency (in some cases this is utilized as anywhere-to-end efficiency).

All values are collected from at least three experiments of independently assembled structures.

^*See Table 1 for individual dye–dye donor–acceptor R₀ values.

^†S.d. of all values <10%.

^‡Wire=[Cy3→Cy3.5→Cy5]_n.

^§Initial Cy3_n absorption at 550 nm relative to the final Cy5.5 absorption at 700 nm.

^||Initial AF488_n absorption at 550 nm relative to the final Cy5.5 absorption at 700 nm.

^¶Displaying either Cy5 or AF647 at the fourth dye position.