diameter: 8–15 nm, length: 50 μm, 95%), 4-hydroxyaminobenzene
(98%), phenol (99%), diethylenetriamine (99%), SDS (99%), and 1,2-dibromoethane
(99%) were obtained from J&K Chemicals. 11-Bromoundecanoic acid
(95%) and PEI with a molecular weight of 10 000 were purchased
from Aladdin Industrial Corporation. PPE membrane (mean pore size
0.22 mm) was obtained from Xiya Reagent. Ferrocene (98%) and all other
analytical grade reagents including methanol, dichloromethane, hydrochloric
acid, sodium hydroxide, and FeCl3 were obtained from Sinopharm
Chemical Reagent Co, Ltd. All chemicals were used as received without
further purification. The surfactant FADETA was synthesized according
to the procedure as mentioned in Scheme S1 in the