A binuclear ruthenium polypyridyl complex: synthesis, characterization, pH luminescence sensor and electrochemical properties

Determination and Imaging of Small Biomolecules and Ions Using Ruthenium(II) Complex-Based Chemosensors

“…Similar to most pH sensors, Ru(II) complex chemosensors for pH have mainly been developed through the mechanism of protonation and deprotonation of several functional groups, such as imidazole [ 106 , 107 ], hydroxyl (–OH) [ 108 – 110 ], carboxyl (–COOH) [ 111 ], pyridine [ 112 , 113 ] and others [ 114 ]. As a result of the protonation-deprotonation process, the molecular structures and the electron density distribution of Ru(II) complex are changed, leading to the variations of absorption and emission intensity/wavelength.…”

Determination and Imaging of Small Biomolecules and Ions Using Ruthenium(II) Complex-Based Chemosensors

“…Similar to most pH sensors, Ru(II) complex chemosensors for pH have mainly been developed through the mechanism of protonation and deprotonation of several functional groups, such as imidazole [106,107], hydroxyl (-OH) [108][109][110], carboxyl (-COOH) [111], pyridine [112,113] and others [114]. As a result of the protonation-deprotonation process, the molecular structures and the electron density distribution of Ru(II) complex are changed, leading to the variations of absorption and emission intensity/wavelength.…”

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)]

“…41–46 The vast majority of these coordination compounds have potential uses in anticancer therapy, 26–28,31,34–37,39–46 bioimaging, 32,47 the conversion of solar energy, 22,29 organic light-emitting diodes, 21,23,48–50 photoredox catalysis, 38,51,52 and luminescence sensing. 30,38,53–56 Surprisingly, little attention has been paid to Re( i ) carbonyl chromophores with 1 H -imidazo[4,5- f ][1,10]phenanthrolines, 47,49,57–66 in contrast to phenanthroline Re( i ) carbonyl complexes [Re(CO) 3 X(N∩N)] n + ( n = 0 or 1), which have a very rich history in coordination chemistry and largely contribute to the understanding of photophysical and light-induced electron-transfer and electronic energy-transfer processes. 67–74 In this study, we present Re( i ) tricarbonyls with the 1 H -imidazo[4,5- f ][1,10]phenanthroline (imphen) functionalized with electron-donating amine groups attached to the imidazole ring via phenylene linkages.…”

“…[41][42][43][44][45][46] The vast majority of these coordination compounds have potential uses in anticancer therapy, [26][27][28]31,[34][35][36][37][39][40][41][42][43][44][45][46] bioimaging, 32,47 the conversion of solar energy, 22,29 organic light-emitting diodes, 21,23,[48][49][50] photoredox catalysis, 38,51,52 and luminescence sensing. 30,38,[53][54][55][56] Surprisingly, little attention has been paid to Re(I) carbonyl chromophores with 1H-imidazo[4,5-f][1,10] phenanthrolines, 47,49,[57][58][59][60][61][62][63]…”