Transport over the Anionic Blackberry Membrane

CATION TRANSPORT OVER THE ANIONIC BLACKBERRY MEMBRANE 

Once the fluorophore-containing blackberries are formed, extra salts are added into the solution. CTC can bind to Ca and Mg with enhanced fluorescence by forming fluorescent chelates. We observe a continuous increase (for 12-14 h) in fluorescence quantum yield (Of) of CTC over time when Ca  

Mg are added (Fig. 17), followed by a blue shift (4 nm for Ca, 5 nm for Mg +). The slow increase of Of indicates that some fluorophores cannot be 

FIGURE 16. Formation of fluorophore-containing Mo72Fe3o blackberries in solution. The additional cations, once added into solution, instantly interact with fluor-ophores in bulk solution and on blackberry surface. They subsequently enter into the blackberries and interact with the fluorophores inside. The anions could not cross the membrane. (Reprinted with permission from ref. 36. Copyright [2008] American Chemical Society.) 

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Cation Transport over the Anionic Blackberry Membrane 55... 

XII. CATION TRANSPORT OVER THE ANIONIC BLACKBERRY MEMBRANE... 

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