New tris(heterocyclic β-diketonato)europium(III) complexes of the general formula Eu(PBI)3·L [where HPBI = 3-phenyl-4-benzoyl-5-isoxazolone and L H2O, 2,2'-bipyridine (bpy), 4,4'-dimethoxy-2,2'-bipyridine (dmbpy), 1,10-phenanthroline (phen), or 4,7-diphenyl-1,10-phenanthroline (bath)] were synthesized characterized by elemental analysis, Fourier transform infrared spectroscopy (FT-IR), 1H NMR, high-resolution mass spectrometry, thermogravimetric photoluminescence (PL) spectroscopy....

A novel efficient antenna complex of Eu3+ [Eu(CPFHP)3(DDXPO)] supported by a highly fluorinated carbazole-substituted β-diketonate ligand, namely, 1-(9H-carbazol-2-yl)-4,4,5,5,5-pentafluoro-3-hydroxypent-2-en-1-one (CPFHP) and the 4,5-bis(diphenylphosphino)-9,9-dimethylxanthene oxide (DDXPO) ancillary has been synthesized, structurally characterized, its photoluminescent behavior examined. The single-crystal X-ray diffraction analysis Eu(CPFHP)3(DDXPO) revealed that this is mononuclear,...

Herein, a new aromatic carboxylate ligand, namely, 4-(dipyridin-2-yl)aminobenzoic acid (HL), has been designed and employed for the construction of series lanthanide complexes (Eu(3+) = 1, Tb(3+) 2, Gd(3+) 3). Complexes 1 2 were structurally authenticated by single-crystal X-ray diffraction found to exist as infinite 1D coordination polymers with general formulas {[Eu(L)(3)(H(2)O)(2)]}(n) (1) {[Tb(L)(3)(H(2)O)].(H(2)O)}(n) (2). Both compounds crystallize in monoclinic space group C2/c. The...

A novel beta-diketone, 4,4,5,5,5-pentafluoro-1-(naphthalen-2-yl)pentane-1,3-dione (HPFNP), which contains polyfluorinated alkyl group, as well the long conjugated naphthyl has been used for synthesis of a series new tris(beta-diketonate)europium(III) complexes general formula Eu(PFNP)3 x L [where = H2O, 2,2'-bipyridine (bpy), 1,10-phenanthroline (phen), 4,7-diphenyl-1,10-phenanthroline (bath)] and characterized by various spectroscopic techniques. The single-crystal X-ray diffraction...

Three new lanthanide heterocyclic β-diketonate complexes [Dy(PPI)3(EtOH)2] (1), [Dy(PPI)3(DPEPO)] (2), and [Tb(PPI)3(DPEPO)] (3) [where HPPI = 3-phenyl-4-propanoyl-5-isoxazolone DPEPO bis(2-(diphenylphosphino)phenyl)ether oxide] have been synthesized fully characterized. Single-crystal X-ray diffraction analyses reveal that these are mononuclear the central LnIII ion is coordinated to eight oxygen atoms provided by three bidentate ligands ethanol or in a distorted square antiprismatic...

Three new binuclear lanthanide complexes of general formula [Ln2(L)6(H2O)4] (Ln = Tb (1), Eu (2), and Gd (3)) supported by the novel aromatic carboxylate ligand 4-(dibenzylamino)benzoic acid (HL) have been synthesized. Complexes 1 2 were structurally characterized single-crystal X-ray diffraction. Both crystallize in triclinic space group P1̅, their molecular structures consist homodinuclear species that are bridged two oxygen atoms from ligands via different coordination modes. The discrete...

Three new europium complexes, [Eu(PBI)3·3H2O] (1), [Eu(PBI)3·2TOPO] (2), and [Eu(PBI)3·2TPPO·H2O] (3) (where HPBI, TOPO, TPPO stand for 3-phenyl-4-benzoyl-5-isoxazolone, tri-n-octylphosphine oxide, triphenylphosphine respectively), with different neutral ligands were synthesized characterized by elemental analysis, Fourier transform infrared, 1H NMR, thermogravimetric photoluminescence (PL) spectroscopy. The coordination geometries of the complexes calculated using Sparkle/AM1 (Sparkle Model...

Three new 4-benzyloxy benzoic acid derivatives [4-benzyloxy = HL1; 3-methoxy-4-benzyloxy HL2; 3-nitro-4-benzyloxy HL3] have been employed as ligands for the support of six lanthanide coordination compounds [Tb3+ 1–3; Eu3+ 4–6] with aim testing influence electron releasing (-OMe) or withdrawing (-NO2) substituents on photophysical properties. The complexes characterized by a variety spectroscopic techniques and two Tb3+ [1 2] structurally authenticated single-crystal X-ray diffraction....

A novel class of efficient antenna complexes Tb3+ based on the use 3-phenyl-4-acyl-5-isoxazolone ligands has been designed, synthesized, characterized and their photophysical properties evaluated . The new heterocyclic β-diketonate exhibit high green luminescence efficiency in solid state with quantum yields between 59–72%. Furthermore this work, synthesis, characterization luminescent poly-β-hydroxybutyrate (PHB) polymer films doped Tb3+-3-phenyl-4-acyl-5-isoxazolonate at 5, 10, 15 20%...

Here, we have demonstrated a facile molecular approach to generate white light emission by combining carboxylic functionalized poly(m-phenylenevinylene)s polymeric architectures with lanthanide β-diketonate complexes. The new class of functional conjugated materials was custom-designed from phenyl propanoic and acetic acids structurally characterized NMR, FT-IR, MALDI-TOF spectroscopic techniques. designed polymers were employed for the synthesis complexes in presence acetyl acetone (acac)...

Herein, we have developed a series of isostructural mixed Ln(3+)-4-(dipyridin-2-yl)aminobenzoate coordination polymers [Ln(3+) = Eu(3+) (1), Tb(3+) (2), and Gd(3+) (3)], characterized investigated their photophysical properties. The results demonstrated that by gently tuning the excitation wavelength these lanthanide complexes, white light emission can be realized with Commission Internationale de I'Eclairage coordinates (0.32, 0.34). Furthermore, changing concentration profiles ions...

On account of their intrinsic chemical and spectroscopic properties, luminescent lanthanide molecular materials find potential applications in lighting, optical communications, photonics biomedical devices. This perspective article summarizes some recent seminal research work on properties structural aspects a series benzoate complexes featuring Eu(3+) Tb(3+) ions. In particular, when modified with light-harvesting moieties, benzoates have proven to be efficient sensitizers for The...

Detection of explosives, especially trinitrotoluene (TNT), is utmost importance due to its highly explosive nature and environmental hazard. Therefore, detection TNT has been a matter great concern the scientific community worldwide. Herein, new aggregation-induced phosphorescent emission (AIPE)-active iridium(III) bis(2-(2,4-difluorophenyl)pyridinato-N,C2′) (2-(2-pyridyl)benzimidazolato-N,N′) complex [FIrPyBiz] developed serves as molecular probe for in vapor phase, solid aqueous media. In...

Abstract The sequential reaction of a multisite coordinating compartmental ligand [2‐(2‐hydroxy‐3‐(hydroxymethyl)‐5‐methylbenzylideneamino)‐2‐methylpropane‐1,3‐diol] (LH 4 ) with appropriate lanthanide salts followed by the addition [Mg(NO 3 2 ] ⋅ 6 H O or [Zn(NO in 4:1:2 stoichiometric ratio presence triethylamine affords series isostructural heterometallic trinuclear complexes containing [Mg Ln] 3+ (Ln=Dy, Gd, and Tb) [Zn cores. formation these is demonstrated X‐ray crystallography as well...

A novel class of efficient visible light sensitized antenna complexes Eu3+ based on the use a highly conjugated β-diketonate, namely, 1-(4-biphenoyl)-3-(2-fluoroyl)propanedione (HBFPD) and 1,10-phenanthroline as an ancillary ligand has been designed, synthesized, characterized their photophysical properties (PL) investigated. PL measurement results indicated that suitably expanded π-conjugation in complex molecules makes excitation band red shift to region hence exhibit intense emission...

Three new homodinuclear lanthanide(III) complexes of xanthene-9-carboxylic acid, [Ln2(XA)6(DMSO)2(H2O)2](Ln = Eu (1), Tb (2) and Gd (3); HXA acid; DMSO dimethylsulfoxide), have been synthesized, which 1 2 were structurally characterized by single-crystal X-ray diffraction. These compounds crystallize in the monoclinic space group P21/n with a =17.849(4) A, b 9.6537(19) c 23.127(5) beta 109.06(3) degrees , V 3766.5(13) A3 for =17.809(4) 9.6548(19) 23.075(5) 108.97(3) 3752.1(13) 2. The crystal...

A novel class of efficient visible light sensitized antenna complexes Eu3+ based on the use a series highly conjugated β-diketonates, namely, 1-(1-phenyl)-3-(2-fluoryl) propanedione, 1-(2-naphthyl)-3-(2-fluoryl)propanedione, 1-(4-biphenyl)-3-(2-fluoryl) and 2,2′-bis(di-p-tolylphosphino)-1,1′-binaphthyl oxide as an ancillary ligand has been designed, synthesized, characterized their photophysical properties investigated. The coordination geometries typical were calculated using Sparkle/PM3...