a novel fret ‘off–on’ fluorescent probe for the selective detection of fe3+, al3+ and cr3+ ions its ultrafast energy transfer kinetics and application in live cell imaging论文.pdf

Biosensors and Bioelectronics 68 (2015) 749–756 Contents lists available at ScienceDirect Biosensors and Bioelectronics journal homepage: /locate/bios A novel FRET ‘off–on’ fluorescent probe for the selective detection of Fe3 þ , Al3 þ and Cr3 þ ions: Its ultrafast energy transfer kinetics and application in live cell imaging Narendra Reddy Chereddy a,n, Peethani Nagaraju a, M.V. Niladri Raju a, Venkat Raghavan Krishnaswamy b, Purna Sai Korrapati b, Prakriti Ranjan Bangal c,n, Vaidya Jayathirtha Rao a,d,n a Crop Protection Chemicals Division, CSIR-Indian Institute of Chemical Technology, Tarnaka, Hyderabad 500 007, India b Biomaterials Lab, CSIR-Central Leather Research Institute, Adyar, Chennai 600 020, India c Inorganic and Physical Chemistry Division, CSIR-Indian Institute of Chemical Technology, Tarnaka, Hyderabad 500 007, India d AcSIR, CSIR-Indian Institute of Chemical Technology, Tarnaka, Hyderabad 500 007, India a r t i c l e i n f o a b s t r a c t Article history: A rhodamine–naphthalimide dyad probe, 1, that selectively responds to the addition of trivalent metal Received 8 November 2014 ions (Fe3 þ or Al3 þ or Cr3 þ ) via ultrafast Förster resonance energy transfer (FRET) from naphthalimide to Received in revised form rhodamine is designed and synthesized. 1 is highly selective to the trivalent metal ions and the presence 29 January 2015 of other monovalent or divalent metal ions do not affect its detection ability. The probe is highly sensitive Accepted 31 January 2015