Photo-induced electron transfer fluorescent sensor molecules

   
   

Disclosed is a modular fluorescence sensor having the following general formula: 1 Where Fl is a fluorophore, N is a nitrogen atom, B.sub.d1 and B.sub.d2 are independently selected binding groups, Sp is an aliphatic spacer, and An is an anchor group for attaching the sensor to solid substrates. n=1 or 2, m=1 or 2, x is an integer, and y=1 or 2. The binding groups are capable of binding an analyte molecule to form a stable 1:1 complex. In a preferred embodiment, the B.sub.d1 is R.sub.1--B(OH).sub.2 and B.sub.d2 is R.sub.2--B(OH).sub.2. R.sub.1 and R.sub.2 are aliphatic or aromatic functional groups selected independently from each other and B is a boron atom. The present invention also provides methods of synthesizing a modular fluorescence sensor and its use in labeling solid substrates.

 
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