Time-Resolved Luminescence in Aqueous Solution − New Europium Labels Derived from Macro(bi)cyclic Ligands with Aminocarboxylic Units

Galaup, Chantal; Carrié, Marie-Christine; Tisnès, P.; Picard, Claude

doi:10.1002/1099-0690(200106)2001:11<2165::aid-ejoc2165>3.0.co;2-f

Cited by 36 publications

(27 citation statements)

References 51 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The silver nanoparticles were prepared by in-situ synthesis in the presence of HTTA and Tb(TTA) 3 Bipy. And then the HTTA and Tb(TTA) 3 Bipy were coated on surface of silver nanoparticles acting as stabilizer as shown in Fig. (6B).…”

Section: (4) the Effect Of Complexes Particle Structurementioning

confidence: 99%

“…The mode of enhancement fluorescence in the system is different. The Tb(TTA) 3 Bipy or HTTA can reduce the degree of Eu complexes Jaggregation, resulting in that the emission photon coupling is almost disappearance. At the same time, the nonradiative relaxation can also be avoided.…”

Section: (4) the Effect Of Complexes Particle Structurementioning

confidence: 99%

“…Luminescent europium (Eu) complex has many unusual spectroscopic properties such as sharp emission peaks, long lifetimes, large stocks shifts and high quantum yields, which make them so ideal for laser, phosphor, light-emitting diodes(LED) and fluoroimmunoassay applications [1][2][3][4][5][6]. Recently, the fluorescence properties of Eu complexes and their applications in polymer photonics materials (PPM) such as polymer optical fiber laser, polymer optical fiber amplifier and three-dimensional multilayered optical memory materials have been studied [7][8][9][10].…”

Section: Introductionmentioning

confidence: 99%

“…The instability is attributed that the -diketone ligand which is used to stabilize silver nanoparticles has active H atom and has strong chelating effect to numerous metal ions. So, Tb(TTA) 3 Bipy (TTA isthenoyltrifluoroacetonato and Bipy is 2,2-bipyridine) was further chosen as the stabilizer of silver nanoparticles [33], then Eu(TTA) 3 Bipy which has strong interaction with silver nanoparticles was added to form Ag/Eu(TTA) 3 Bipy nanocomposite. Tb(TTA) 3 Bipy is a good kind of stabilizer (TTA does not have active H atom and TTA has already chelated with Tb 3+ ) and can reduce the condensed J-aggregation of Eu(TTA) 3 Bipy around silver nanoparticles, in which the enhancement fluorescence was observed.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Effects of Noble Metal Nanoparticles on the Luminescent Properties of Europium Complex

Sun¹,

Guo²,

Liu³

et al. 2010

CNANO

View full text Add to dashboard Cite

Recent theoretical progress in understanding the effect of noble metal nanoparticles on the luminescent properties of europium complex was reviewed. The observed enhancement fluorescence results from surface-enhanced fluorescence (SEF) based on the surface plasmon resonance (SPR) of noble metal nanoparticles. And the observed quenching fluorescence is attributed to the re-absorption of surface plasmon resonance and noble metal nanoparticles scattering. And then the enhancing and quenching effects strongly depend on size, shape, concentration, surrounding medium of noble metal nanoparticle and the structure of europium complex. Furthermore, the mechanism of surface-enhanced fluorescence, and physical process between noble metal nanoparticles and europium complex were also discussed in detail. These discussions are very important to further improve enhancement factor, which is key to application in optical materials for the surface-enhanced fluorescence phenomenon of noble metal nanoparticles.

show abstract

Section: (4) the Effect Of Complexes Particle Structurementioning

confidence: 99%

Section: (4) the Effect Of Complexes Particle Structurementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Effects of Noble Metal Nanoparticles on the Luminescent Properties of Europium Complex

Sun¹,

Guo²,

Liu³

et al. 2010

CNANO

View full text Add to dashboard Cite

show abstract

“…1 Multifunctional macrocycles have also attracted attention as ligands for the preparation of lanthanide complexes with interesting luminescence properties and have been employed in biological applications. 2 The construction of receptor molecules containing a metal coordinating element leads to synthetic molecules that mimic key features of enzyme activity. 3 The design of such artificial enzymes, where a transition metal is placed within the framework of a chiral macrocycle, can have applications in asymmetric catalysis.…”

mentioning

confidence: 99%

Synthesis of new enantiomerically pure macrocycles containing phenanthroline subunits

et al. 2006

View full text Add to dashboard Cite

New enantiomerically pure macrocycles have been prepared by combining 1,10-phenanthroline 2,9-dicarboxylic acid and two a-amino-acids linked through spacers. Different diamine linkers have been employed in order to modify the dimensions and the properties of the macrocycles whose structures have been studied by 1 H and 13 C NMR spectroscopy. The ability of the (L)-valine containing macrocycles to bind metal ions and phenolic molecules has been investigated by 1 KEY WORDS: chiral macrocycles; asymmetric catalysis; phenanthroline; molecular recognition; molecular modelingThe synthesis of new chiral multifunctional macrocyclic structures is a fascinating topic that finds application in different areas. The design of receptors containing multiple recognition sites has recently attracted considerable attention in the field of molecular recognition. 1 Multifunctional macrocycles have also attracted attention as ligands for the preparation of lanthanide complexes with interesting luminescence properties and have been employed in biological applications. 2 The construction of receptor molecules containing a metal coordinating element leads to synthetic molecules that mimic key features of enzyme activity. 3 The design of such artificial enzymes, where a transition metal is placed within the framework of a chiral macrocycle, can have applications in asymmetric catalysis. 4 The combination of a metal-chelating unit and chiral subunits held in a macrocycle through linkers is particularly attractive, since it offers the possibility of locating the catalytically-active site in a chiral environment. 5 We have recently reported the preparation of enantiomerically pure bipyridine and phenanthroline-based macrocycles that have been successfully used as chiral ligands in the asymmetric cyclopropanation promoted by copper (I) triflate complex. 6 Three elements were combined in building the new catalytic system: a chiral auxiliary, a nitrogen-containing ligand site, and a connecting unit that may offer further points of diversity by modification of the size and nature of the chemical bonds linking the different units of the assembly (model-structure A in Fig. 1).Following our interest in developing enantiomerically pure phenanthroline-containing macrocycles, we have connected the phenanthroline unit to chiral residues derived from amino acids. 7 The use of diamine linkers with different length and flexibility should allow the modulation of the size and shape of the macrocycle cavity (model-structure B in Fig. 1). Besides potential use as chiral ligands in asymmetric catalysis, the new structures feature different hydrogen bond donors and acceptors that make them potential candidates in multisite molecular recognition phenomena.We report here the synthesis of such new enantiomerically pure macrocycles, their structure determination via NMR techniques, and preliminary studies of their behaviour as catalysts and in hydrogen-bond-based recognition phenomena. MATERIALS AND METHODS General MethodsMelting points are uncorrected...

show abstract

Spectroscopic Study of a UV‐Photostable Organic–Inorganic Hybrids Incorporating an Eu³⁺ β‐Diketonate Complex

Lima¹,

Ferreira²,

Freire³

et al. 2006

ChemPhysChem

131

111

View full text Add to dashboard Cite

New europium and gadolinium tris-beta-diketonate complexes have been prepared and incorporated in sol-gel-derived organic-inorganic hybrids, named di-ureasils. The general formula [Ln(btfa)3(4,4'-bpy)(EtOH)] (Ln=Eu, Gd; 4,4'-bpy=4,4'-bipyridine; btfa=4,4,4-trifluoro-1-phenyl-1,3-butanedione) for the complexes was confirmed by X-ray crystallography and elemental analysis. The ground-state geometry of the Eu3+ complex was calculated from the Sparkle/AM1 model. The calculated quantum yield obtained from the Sparkle model and from the crystal structure (both 46%) are in satisfactory agreement with the experimental value (38+/-4%). In the isolated complex the most efficient luminescence channel is S0-->S1-->T-->(5D1, 5D0)-->7F0-6, where the exchange mechanism dominates in the energy-transfer channel T-->(5D1, 5D0). For the Eu3+-based di-ureasils a 50% quantum yield enhancement compared to the Eu3+ complex is observed, which suggests an effective hybrid host-metal ion interaction and an active energy-transfer channel between the hybrid host and the Eu3+ complex. The Eu3+-based di-ureasils are photostable under UVA (360 nm) excitation, whereas under UVB (320 nm) and UVC (290 nm) photodegradation occurs.

show abstract

Time-Resolved Luminescence in Aqueous Solution − New Europium Labels Derived from Macro(bi)cyclic Ligands with Aminocarboxylic Units

Cited by 36 publications

References 51 publications

Effects of Noble Metal Nanoparticles on the Luminescent Properties of Europium Complex

Effects of Noble Metal Nanoparticles on the Luminescent Properties of Europium Complex

Synthesis of new enantiomerically pure macrocycles containing phenanthroline subunits

Spectroscopic Study of a UV‐Photostable Organic–Inorganic Hybrids Incorporating an Eu³⁺ β‐Diketonate Complex

Contact Info

Product

Resources

About

Time-Resolved Luminescence in Aqueous Solution − New Europium Labels Derived from Macro(bi)cyclic Ligands with Aminocarboxylic Units

Cited by 36 publications

References 51 publications

Effects of Noble Metal Nanoparticles on the Luminescent Properties of Europium Complex

Effects of Noble Metal Nanoparticles on the Luminescent Properties of Europium Complex

Synthesis of new enantiomerically pure macrocycles containing phenanthroline subunits

Spectroscopic Study of a UV‐Photostable Organic–Inorganic Hybrids Incorporating an Eu3+ β‐Diketonate Complex

Contact Info

Product

Resources

About

Spectroscopic Study of a UV‐Photostable Organic–Inorganic Hybrids Incorporating an Eu³⁺ β‐Diketonate Complex