Table 11. Overview of Optical pH Probes Exploring Conformational Changes in Polymersa.
| dye | polymer | comments | ref |
|---|---|---|---|
| pyrene + coumarin 343 | PAA modified with sulfadimethoxine as a linker | very sharp response; ratiometric 2-λ read-out; short wavelength of excitation and emission | (871) |
| 7-hydroxy-4-bromomethyl coumarin + coumarin 343 | PAA modified with sulfadimethoxine or sulfamethizole as a linker | very sharp response; ratiometric 2-λ read-out; short wavelength of excitation and emission | (876) |
| fluorescein + rhodamine B | PAA modified with sulfadimethoxine as a linker | very sharp response; ratiometric 2-λ read-out | (876) |
| Cy3 + Cy5 | N-palmitoyl chitosan NPs | ratiometric 2-λ read-out | (877) |
| Cy5.5 + quencher | poly(oligo(ethylene glycol) methacrylate) and poly(benzyl-l-aspartic acid) | sharp response due to micelle formation | (878) |
| CdS/ZnS + CdSe/ZnS QDs | graphene oxide NPs decorated with QD-polymer conjugates | ratiometric 2-λ read-out/lifetime read-out | (872) |
| numerous chromophores | block copolymer PEG + alkylamino-modified PMMA | very sharp transitions, high tunability of optical and sensing properties | (453, 873, 879) |
| BTPE + coumarin | block copolymer PEG + alkylamino-modified PMMA | ratiometric 2-λ read-out; short wavelength excitation and emission; two-photon read-out possible | (880) |
| perylene-bis-imide | PAEMA dendrimer | operates in diluted solutions | (874) |
a
A more detailed version of the table can be found in the Table S9. BTPE = 2-((E)-2-(pyridin-2-yl)vinyl)benzo[d]thiazole, PAEMA= poly(aminoethyl methacrylate), PAA = poly(acrylic acid).