For example, metalloporphyrins respond to Lewis bases, and solvatochromic dyes provide a measure of analyte polarity. The rest of the array contains traditional pH indicators, which actually tell much more about the samples than just pH. "At this point, the array is truly universal," Suslick says. "It isn't necessary to tweak the choice of dyes for one application or another."
by Celia Henry |
August 29, 2005