A Novel Series Colorimetric and Off–On Fluorescent Chemosensors for Fe3+ Based on Rhodamine B Derivative

• DOI: 10.1007/s10895-012-1118-1
• Publication Date: 2012-08-17T12:31:21Z
• Authors: Di Zhang; Ruyi Zou; Min Wang; Meimei Chai; Xubin Wang; Yong Ye; Yufen Zhao
• Keywords: Rhodamine; Derivative (finance); Rhodamine B

A novel series colorimetric and off-on fluorescent chemosensors (2a, 2b, 2c) were designed and synthesized, which showed reversible and highly selective and sensitive recognition toward Fe(3+) over other examined metal ions. Upon addition of Fe(3+), sensors (2a, 2b) exhibit remarkably and 2c exhibits moderate enhanced absorbance intensity and color change from colorless to pink in CH(3)OH-H(2)O(1:1, v/v). The three compounds (2a, 2b, 2c) may therefore be applicable as rhodamine-based turn-on type fluorescent chemosensors.