title: Rhodamine-based fluorescent probe for Al3+ through time-dependent PET-CHEF-FRET processes and its cell staining application.
abstract: Rhodamine-diformyl p-cresol conjugate (L) has been developed as a novel Al(3+)-selective fluorometric and colorimetric sensor based on the FRET mechanism for the first time. L can selectively detect Al(3+) through time-dependent PET-CHEF and FRET processes. This phenomenon is nicely reflected from (1)H NMR, fluorescence lifetime, and fluorescence cell imaging studies. The probe can detect Al(3+) as low as 5 × 10(-9) M in HEPES-buffered EtOH:water (0.1 M, 4:1, v/v, pH 7.4). The probe shows pH-dependent emission properties viz. an intense red emission (585 nm) at acidic pH and an intense green fluorescence (535 nm) at basic pH. Thus, L can also be used as a pH sensor via tunable wavelength.
authors.affiliation: Department of Chemistry, The University of Burdwan, Burdwan 713104, West Bengal, India.
authors.forename: Animesh
authors.initials: A
authors.lastname: Sahana
authors.forename: Arnab
authors.initials: A
authors.lastname: Banerjee
authors.forename: Sisir
authors.initials: S
authors.lastname: Lohar
authors.forename: Bidisha
authors.initials: B
authors.lastname: Sarkar
authors.forename: Subhra Kanti
authors.initials: SK
authors.lastname: Mukhopadhyay
authors.forename: Debasis
authors.initials: D
authors.lastname: Das
mesh_terms: D000535:Aluminum / Q000032:analysis*; D029062:Apocynaceae / Q000737:chemistry / Q000648:ultrastructure*; D031541:Fluorescence Resonance Energy Transfer; D005456:Fluorescent Dyes / Q000737:chemistry*; D006863:Hydrogen-Ion Concentration; D057054:Molecular Imaging; D011058:Pollen / Q000737:chemistry / Q000648:ultrastructure*; D011789:Quantum Theory; D012235:Rhodamines / Q000737:chemistry*; D013050:Spectrometry, Fluorescence; D013194:Staining and Labeling / Q000379:methods*
chemical_list: D005456:Fluorescent Dyes; D012235:Rhodamines; D000535:Aluminum