Photoinduced energy transfer from the triplet state of naphthalene moiety in the Tb3+/Eu3+ complexes of a specially designed naphthalene cryptand

Samanta, Subhodip; Pal, Anirban; Roy, Madhusudan; Ghosh, Sanjib

doi:10.1016/j.jlumin.2008.03.025

Cited by 4 publications

(4 citation statements)

References 59 publications

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“…8. It is clear that 544 nm emission intensities of Tb 3 + (curve b) decrease and 615 nm emission intensities of Eu 3 + (curve c) rise with increasing Eu 3 + concentration, confirming the presence of energy transfer process from Tb 3 + to Eu 3 + ions [25][26][27][28][29][30][31][32]. The same ET process of Tb 3 + → Eu 3 + was validated in Y 2 O 3 :Eu 3 + ,Tb 3 + phosphors [33,34].…”

Section: Energy Transfer From Tb 3 + To Eu 3 + In Eu 3 + /Tb 3 + /Tm supporting

confidence: 64%

White light emission from Eu3+/Tb3+/Tm3+ triply-doped aluminoborate glass excited by UV light

Zhao

Cai

et al. 2012

Journal of Non-Crystalline Solids

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Section: Energy Transfer From Tb 3 + To Eu 3 + In Eu 3 + /Tb 3 + /Tm supporting

confidence: 64%

White light emission from Eu3+/Tb3+/Tm3+ triply-doped aluminoborate glass excited by UV light

Zhao

Cai

et al. 2012

Journal of Non-Crystalline Solids

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“…This suggests that gel medium is essential in keeping the donor–acceptor moieties at fixed distance and orienting them with suitable geometrical positions for efficient resonance energy transfer. The present system exhibits superior properties in terms of metal-centered emission quantum yield and rate of energy transfer compared to reported cases. ,− …”

Section: Resultsmentioning

confidence: 77%

Enhanced Resonance Energy Transfer and White-Light Emission from Organic Fluorophores and Lanthanides in Dendron-based Hybrid Hydrogel

Kumar

Soumya

Prasad

2016

ACS Appl. Mater. Interfaces

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In this paper, we have investigated the use of poly(aryl ether) dendron-based gel as a medium for resonance energy transfer (RET) from organic donors (phenanthrene, naphthalene, and pyrene) to lanthanide [Eu(III) and Tb(III)] ions. The gel has been prepared through self-assembly of glucose-cored poly(aryl ether) dendrons in a dimethyl sulfoxide/water mixture (1:9 v/v). The efficiency of RET was calculated by metal-centered emission quantum yield measurements in the gel medium. While there was no resonance energy transfer observed between the donor-acceptor pairs in solution, efficient RET has been observed in the gel medium. The metal-centered quantum yield values were 11.9% for phenanthrene-Eu(III), 3.9% for naphthalene-Eu(III), and 3.6% for pyrene-Eu(III) systems. Partial RET in the system has been utilized to generate white-light emission from the gel by incorporating an additional lanthanide ion, Tb(III), along with the organic donors and Eu(III). The CIE (Commission Internationale d'Eclairage) coordinates obtained for gels formed by phenanthrene-Tb(III)-Eu(III) (PTE), naphthalene-Tb(III)-Eu(III) (NTE), and pyrene-Tb(III)-Eu(III) (PyTE) were (0.33, 0.32) for PTE, (0.35, 0.37) for NTE, and (0.35, 0.33) for PyTE. The correlated color temperatures (CCT) for white-light-emitting gels were calculated, and the values (5520 K for PTE, 4886 K for NTE, and 4722 K for PyTE) suggest that the system generates cool white light.

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“…Energy transfer can only occur if the energy differences between the ground and excited states of the sensitizer and acceptor are nearly equal (resonance condition) and if a suitable interaction between the two exists . Considerable effort has been made in designing various kinds of sensitizing ligands, such as macrocyclic molecules, − polymers, − and dendrimers, , with their triplet state energies comparable to those of the lanthanide acceptor states for enhanced luminescence efficiency. On the other hand, the incorporation of lanthanide ions and lanthanide complexes in solid materials has been a subject of increasing attention for practical device applications.…”

Section: Introductionmentioning

confidence: 99%

Lanthanide-Doped Layered Double Hydroxides Intercalated with Sensitizing Anions: Efficient Energy Transfer between Host and Guest Layers

Gunawan

2009

J. Phys. Chem. C

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Layered double hydroxides (LDHs) doped with Tb3+ ions in the brucite-like layers were prepared by a simple one-step coprecipitation method at ambient conditions. When 4-biphenylacetate (BPA) anions were intercalated in the interlayer space, a high concentration of Tb3+ up to around 19 wt % can be homogeneously incorporated in the octahedral lattice of LDHs. The luminescence study indicated that efficient energy transfer from the excited state of the intercalated BPA guest molecules to Tb3+ centers in the host layers takes place. Compared with LDHs without a photosensitizer, Tb3+-doped LDHs intercalated with BPA display much enhanced green luminescence from Tb3+ ions. Long lifetimes of around 1.3 ms and high quantum yields of 14−22% were obtained. In addition, the emission color of this type of hybrid materials can be tuned from blue to green by varying the amount of Tb3+ ions. As the compositions of metal cations and interlayer anions in the LDH structure can be easily varied, the inorganic−organic hybrid system reported here opens great opportunity for developing efficient and functional luminescent materials by simple wet chemical methods.

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Photoinduced energy transfer from the triplet state of naphthalene moiety in the Tb3+/Eu3+ complexes of a specially designed naphthalene cryptand

Cited by 4 publications

References 59 publications

White light emission from Eu3+/Tb3+/Tm3+ triply-doped aluminoborate glass excited by UV light

White light emission from Eu3+/Tb3+/Tm3+ triply-doped aluminoborate glass excited by UV light

Enhanced Resonance Energy Transfer and White-Light Emission from Organic Fluorophores and Lanthanides in Dendron-based Hybrid Hydrogel

Lanthanide-Doped Layered Double Hydroxides Intercalated with Sensitizing Anions: Efficient Energy Transfer between Host and Guest Layers

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