. Author manuscript; available in PMC: 2015 Jul 7.

Published in final edited form as: European J Org Chem. 2014 May 1;2014(14):2972–2979. doi: 10.1002/ejoc.201400025

Table 1.

Extraction of FITC-choline 9 with 1 with variable base concentration.

Alkali volume [%]^a	Extraction [%]	Extraction (control) [%]	Extraction efficiency [%]^b
0	0.3	1.0	0
2	5.2	1.0	2.1
5	7.4	2.7	2.3
10	9.9	1.9	4.0
15	13.1	2.0	5.6
20	14.9	2.1	6.4

Resorcinarene-based receptor 1 (100 μm) in CH₂Cl₂, guest 9 (50 μm) was dissolved in water containing the amount stated (% v/v) of NaOH (1 m), stirred for 24 h at 160 rpm. The resulting aqueous phase was compared to a UV/Vis calibration curve after dilution. The results are representative of multiple runs. See Exp. Sect. for full details.

Calculated as (extraction – extraction control) × [guest]/[host].