Design and investigation of a series of rhodamine-based fluorescent probes for optical measurements of pH.
A series of structurally similar fluorescent probes (1-4), synthesized from rhodamine B, were designed to optically measure pH. Each probe had a unique "off-on" response as the solution went from basic to acidic. Probes 1-3 exhibited a spirocyclic quenching of the pyronin B fluorophore, whereas probe 4 was quenched by PET from the amine moiety.
Best
Quinn A
QA
Department of Chemistry and Biochemistry, Southern Illinois University, Carbondale, Illinois 62901, USA.
Xu
Ruisong
R
McCarroll
Matthew E
ME
Wang
Lichang
L
Dyer
Daniel J
DJ
D015195:Drug Design; D005456:Fluorescent Dyes / Q000138:chemical synthesis* / Q000737:chemistry*; D006863:Hydrogen-Ion Concentration; D055620:Optical Phenomena; D012235:Rhodamines / Q000737:chemistry*
D005456:Fluorescent Dyes; D012235:Rhodamines