Hg2+ triggered %26apos;off state-on state%26apos; conversion of a dipyrene derivative: Application to soft material

作者：Singla Priya; Kaur Paramjit; Singh Kamaljit

来源：Sensors and Actuators B: Chemical , 2017, 244: 299-306.

DOI：10.1016/j.snb.2016.12.150

• Pyrene-thiophene based probe
• Twisted conformation
• Intramolecular rotations
• Hg2+ ions promoted restricted rotation
• Soft material decontamination

We report a pyrene-thiophene based probe having twisted conformation with quenched emission, which detects Hg2+ ions in solution as well as in hydrogel. The sensing protocol relies on the conformationally restricted intramolecular rotations leading to the emission enhancement. We also explored the optical properties of the molecular probe at solvent mixtures of different THF and H2O ratios and subsequently monitored'the sensing of Hg2+ at more appropriate ratio. Further, addition of the molecular probe to the Hg2+ cholate hydrogel is attended by a gel to sol phase transition, disclosing its potential to decontaminate the Hg2+ contaminated soft materials.

• 出版日期2017-6