Determination of Hypochlorite via Fluorescence Change from Blue to Green Based on 4-(1 H-imidazo [4,5-f] [1,10]-phenanthrolin-2-yl) Benzaldehyde Oxime

A fundamental role of the solvent polarity and remote substitution of the 2-(4-R-phenyl)-1H-imidazo[4,5-f][1,10]phenanthroline framework in controlling the ground- and excited-state properties of Re(i) chromophores [ReCl(CO)3(R-C6H4-imphen)]

“…The complexes [ReCl(CO 4) and [ReCl(CO) 3 (C 6 H 5 -imphen)] ( 5), belonging to the family of [ReCl(CO) 3 (diimine)] systems, were obtained in good yields following the established procedure based on the reaction of Re(CO) 5 Cl with an appropriate 1H-imidazo [4,5-…”

“…In a deaerated chloroform solution, the complexes [ReCl (CO) 3 (R-C 6 H 4 -imphen)] showed a broad and structureless emission band with the maximum lying at 587 nm for the model chromophore (5) and at 623 nm for the Re(I) complex with the N,N-dimethylamine substituent (1). The attachment of the N-donor group to the ligand C 6 H 5 -imphen induces a bathochromic shift of the emission by 36 nm for 1, 5 nm for 2, 23 nm for 3 and 13 nm for 4 in relation to the parent compound (5). For all Re(I) complexes, the red-shift of the emission maximum was accompanied by a significant prolongation of excited state lifetimes and a noticeable decrease in non-radiative decay constants (k nr ).…”

“…During the last two decades, imidazo [4,5-f ] [1,10]phenanthrolines have attracted widespread attention owing to their remarkable antitumor and luminescence properties which make these compounds useful for employment as luminescence sensors, [1][2][3][4][5] OLED components, 6,7 and inhibitors against various tumor cells. [8][9][10][11][12][13][14] A great advantage of these systems is that they involve a relatively simple synthetic procedure and there is a possibility of introducing all types of substituents into the imidazole ring at the 1H-and C2-positions, including both electron-withdrawing and electron-donating groups, showing different lipophilicities and steric hindrances, directly (via the covalent bond) or through an aryl/heterocycle bridge.…”

“…[8][9][10][11][12][13][14] A great advantage of these systems is that they involve a relatively simple synthetic procedure and there is a possibility of introducing all types of substituents into the imidazole ring at the 1H-and C2-positions, including both electron-withdrawing and electron-donating groups, showing different lipophilicities and steric hindrances, directly (via the covalent bond) or through an aryl/heterocycle bridge. [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18][19][20] Possessing the 1,10-phenanthroline unit with strong abilities to bind transition metals, imidazo [4,5-f ] [1,10] phenanthrolines have also become very popular ligands for controlling the photophysical and antiproliferative behaviour of transition metal complexes. They have been combined with numerous transition metal ions including Cu(I), [21][22][23][24][25] Cu(II), [26][27][28] Ru(II), [29][30][31][32][33][34][35]<...…”

Selective detection of hypochlorous acid in living cervical cancer cells with an organoselenium-based BOPPY probe

“…18 BOPPY has various exceptional properties, such as an excellent diversity of target dyes due to the neighbouring and accessible N-heteroarene rings, large Stokes shifts, high fluorescence, photostability and chemostability. 19 Till date, various fluorophores have been utilized for the detection of hypochlorite ions, such as BODIPY, 20 BOPHY, 21 pyrene, 22 naphthalimide, 23 benzaldehyde oxime, 24 fluorescein, 25 and coumarin. 26 To the best of our knowledge, there is no report on BOPPY-based biosensors for the detection of hypochlorite/analytes.…”