Table 1.

Main photophysical data of probes 1–4 and their BCN conjugates.

	λabs,max [nm]	λem,max [nm]	ϵ [a] /×104 M−1 cm−1	Stokes‐shift[b] [nm]	ΦD [c] [%]	ΦBCN/ΦTet	IBCN/ITet [d]
1	434/552	567	2.5/9.5	146	1.0	14.5	15.9
1.BCN	406/552	566	2.2/9.3		14.5
2	428/650	670	2.1/10.4	247	2.0	6.2	7.2
2.BCN	403/650	669	2.3/10.4		12.4
3	371/552	566	2.0/9.8	199	2.0	7.1	5.2
3.BCN	367/552	566	2.0/9.7		14.2
4	372/650	672	2.1/14.6	280	3.3	5.1	2.5
4.BCN	370/650	670	2.0/14.3		16.8

[a] determined at λ_abs,max. [b] apparent Stokes‐shifts. [c] excited at the absorption maxima of the donors (relative to the respective standard (see Supporting Information)). [d] calculated at λ_em,max of the acceptor when excited at the λ_{abs, max} of the donor.