Device for detecting hydrosulfide

A device comprising:

• a source;
• a drain;
• a gate;
• a bulk layer, wherein the source contacts a first portion of the bulk, and the drain contacts a second portion of the bulk that is physically distinct from the first portion and the gate is disposed on a surface of the bulk in a position between the source and the drain forming a gate/bulk interface;
• and
• a polymeric element disposed on a surface of the gate that opposes the gate/bulk interface, wherein the polymeric element comprises a (A) polymer and
• (B)(i) a compound, or a protonate or salt thereof, having a structure represented by:
• wherein Y is
• wherein R50, R51, R52, R53, R54 and R55 are each independently selected from hydrogen, alkyl, substituted alkyl, a polyether moiety, carboxyl, substituted carboxyl, carbamate, substituted carbonate, carbonyloxy, alkoxy, substituted alkoxy, haloalkyl, halogen, nitro, amino, aryloxy, cyano, hydroxyl, or sulfonyl;
• n is 1 or 2;
• R is independently H, alkyl, substituted alkyl, a polyether moiety, carboxyl, substituted carboxyl, carbamate, substituted carbonate, carbonyloxy, alkoxy, substituted alkoxy, haloalkyl, halogen, nitro, amino, amido, aryloxy, cyano, hydroxyl, or sulfonyl;
• R1 is H, substituted lower alkyl, lower alkyl, substituted aralkyl or aralkyl;
• R2 is selected from H, acyl, substituted aralkyl, aralkyl, phosphonyl, —SO2R3;
• —C(O)R5;
• —C(O)OR7 or —C(O)NR9R10;
• R3;
• R5;
• R7;
• R9 and R10 are each independently selected from H, substituted lower alkyl, lower alkyl, substituted aralkyl, aralkyl, substituted aryl or aryl;
• or
• (B)(ii) a compound, or a protonate or salt thereof, having a structure represented by:
• wherein Y is
• wherein R50, R51, R52, R53, R54 and R55 are each independently selected from hydrogen, alkyl, substituted alkyl, a polyether moiety, carboxyl, substituted carboxyl, carbamate, substituted carbonate, carbonyloxy, alkoxy, substituted alkoxy, haloalkyl, halogen, nitro, amino, aryloxy, cyano, hydroxyl, or sulfonyl;
• each R15 is independently H, alkyl, substituted alkyl, a polyether moiety, carboxyl, substituted carboxyl, carbamate, substituted carbonate, carbonyloxy, alkoxy, substituted alkoxy, haloalkyl, halogen, nitro, amino, amido, aryloxy, cyano, hydroxyl, or sulfonyl;
• each X is independently halogen, alkoxy, substituted alkoxy, alkyl, substituted alkyl or a polyether moiety;
• and
• m is 0 to 5.