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Hg2+-promoted photoactivation of triazolyl rhodamine

Y. B. Ruan, H. Yi and J. Xie Photochemical & Photobiological Sciences, 2013, 12, 1103-1109

Hg2+ was able to induce the ring-opening of glycosyl triazolyl rhodamines after 26 h incubation at room temperature in MeCN–DMSO (99 : 1). This reaction can be dramatically accelerated by irradiation at 313 nm, by reducing the response time to 2 min. Selectivity towards Hg2+ has also been demonstrated, except for Cu2+, other metal ions showed almost no influence on this photochromic process. Detailed mechanistic investigations indicated that a small amount of DMSO played an important role during the photochromic transformation, probably by stabilising the excited open form of the triazolyl rhodamine–Hg2+ complex.

Type :

Publication

Dates :

Paru le 3 avril 2013

Informations complémentaires :

doi 10.1039/C3PP25417H