Luminescent Eu(III) coordination polymer cross-linked with Zn(II) complexes

Yamamoto, Masanori; Nakanishi, Takayuki; Kitagawa, Yuichi; Fushimi, Koji; Hasegawa, Yasuchika

doi:10.1016/j.matlet.2015.12.154

Cited by 22 publications

(13 citation statements)

References 16 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Preparation of 4‐pyridyl diphenyl phosphine oxide (dppy) C 17 H 14 NOP : Dppy was prepared according to a literature protocol . 1 H NMR (400 MHz, CDCl 3 /TMS): δ =8.74–8.79 (t, 2 H, py), 7.48–7.71 ppm (m, 12 H, Ar); HRMS (ESI): m/z calcd for C 17 H 15 NOP + : 280.09 [ M +H] + ; found: 280.09; elemental analysis calcd (%) for C 17 H 14 NOP (279.3): C 73.11, H 5.05, N 5.02; found: C 73.03, H, 5.07; N, 4.95.…”

Section: Methodsmentioning

confidence: 99%

“…Preparation of [ZnCl 2 (dppy) 2 ] C 34 H 28 Cl 2 N 2 O 2 P 2 Zn : [ZnCl 2 (dppy) 2 ] was prepared according to a literature protocol . 1 H NMR (400 MHz, CDCl 3 /TMS): δ =8.84–8.89 (t, 4 H, py), 7.71–7.77 (d, 4 H, py), 7.62–7.70 (m, 12 H, Ar), 7.50–7.57 ppm (m, 8 H, Ar); HRMS (ESI): m/z calcd for C 34 H 28 ClN 2 O 2 P 2 Zn: 692.03 [ M −Cl] + ; found: 692.03; elemental analysis calcd (%) for C 34 H 28 Cl 2 N 2 O 2 P 2 Zn (727.5): C 58.77, H 4.06, N 4.03; found: C 59.27, H 4.31, N 3.73.…”

Section: Methodsmentioning

confidence: 99%

See 1 more Smart Citation

Ligand‐Assisted Back Energy Transfer in Luminescent Tb^III Complexes for Thermosensing Properties

Yamamoto

Kitagawa

Nakanishi

et al. 2018

Chemistry A European J

Self Cite

View full text Add to dashboard Cite

A luminescent TbIII complex with a hexafluoroacetylacetone (hfa) ligand shows a characteristic back energy transfer (BEnT), which leads to high temperature sensitivity and potential application as a thermosensitive paint. Ligand‐assisted BEnT was observed when a phosphine oxide ligand was introduced into Tb(hfa)3 complex, which was shown to affect the activation energy (ΔEa) and frequency factor (A) in the BEnT process between TbIII ion and hfa ligands. According to temperature‐dependent emission‐lifetime measurements of mononuclear Tb(hfa)3 complexes with monodentate phosphine oxides and polynuclear Tb(hfa)3 complexes with bidentate phosphine oxides, the ΔEa and A values of polynuclear TbIII complexes were smaller than those of mononuclear TbIII complexes. Phosphorescence spectra and lifetimes of each Gd(hfa)3 complex revealed that excited states of hfa ligands in TbIIIcomplexes differed from those of the polynuclear TbIII complexes and mononuclear TbIII complexes. The differences in the ΔEa and A values between polynuclear and mononuclear TbIII complexes were caused by the formation of different excited states, such as delocalization of the excited state in the polynuclear TbIII complexes and localization of excited states in the mononuclear TbIII complexes. In particular, small ΔEa and A values of polynuclear TbIII complexes provided high, effective activation of the BEnT at low temperature, which resulted in high‐sensitive temperature‐dependent phosphor materials over a wide temperature range.

show abstract

Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Ligand‐Assisted Back Energy Transfer in Luminescent Tb^III Complexes for Thermosensing Properties

Yamamoto

Kitagawa

Nakanishi

et al. 2018

Chemistry A European J

Self Cite

View full text Add to dashboard Cite

show abstract

“…We synthesized an Eu (III) coordination polymer cross-linked with a Zn(II) complex as a joint ligand (Fig. 8e) 81 . The intrinsic emission quantum yield (Φ f-f ) was estimated to be 59%.…”

Section: Light and Transition Metal Complexesmentioning

confidence: 99%

Effective photosensitized, electrosensitized, and mechanosensitized luminescence of lanthanide complexes

2018

Self Cite

View full text Add to dashboard Cite

The 4f-4f emission of Tb(III), Eu(III), and Sm(III) complexes plays an important role in the design of monochromatic green, red, and deep-red luminescent materials for displays, lighting, and sensing devices. The 4f-4f emission of Yb(III), Nd(III), and Er(III) complexes is observed in the near-infrared (IR) region for bioimaging and security applications. However, their absorption coefficients are extremely small (ε < 10 L mol −1 cm −1 ). In this review, photosensitized luminescent lanthanide(III) complexes containing organic chromophores (ligands) with large absorption coefficients (ε > 10,000 L mol −1 cm −1 ) are introduced. Organic molecular design elements, including (1) the control of the excited triplet (T 1 ) state, (2) the effects on the charge-transfer (CT) band, and (3) the energy transfer from metal ions for effective photosensitized luminescence, are explained. The characteristic electrosensitized luminescence (electroluminescence) and mechanoluminescence (triboluminescence) of lanthanide(III) complexes are also explained. Lanthanide(III) complexes with well-designed organic molecules are expected to open avenues of research among the fields of chemistry, physics, electronics, and material science.

show abstract

“…BTZ)[30]. The above analysis reveals that the complexes are effectively coordinated with the copolymer PS-GMA.…”

mentioning

confidence: 76%

Tunable white light emission of a large area film-forming macromolecular complex with a high color rendering index

Zhang

Wang

Qian

et al. 2018

Opt. Mater. Express

View full text Add to dashboard Cite

The technological route of pre-polymerization and post-coordination was employed to obtain a rapid film-forming macromolecular complex emitting white light by simultaneously combining poly (styrene-co-glycidyl methacrylate) with three primary color complexes [r(R)/g(G)/b(B)]. The white light emission of the macromolecular complex was realized by tuning the ratios of the trichromatic complexes or altering excitation wavelengths. Upon excitation at 365 nm, macromolecular complex 5 with R:G:B = 1:10:1 exhibits three discrete characteristic peaks at 458 (blue emission), 543 (green emission), and 612 (red emission) nm. The corresponding CIE coordinates of (0.332, 0.337) are in close proximity to pure white light (0.330, 0.330). Macromolecular complex 3 (R:G:B = 1:8:0.5) achieves white emission being excited at the wavelength of 375 nm. Macromolecular complex 5 was melted at 140 °C, dropped on a 365 nm UV chip, and then cooled to room temperature to fabricate an LED device with CIE coordinates of (0.35, 0.34), CCT of 5306 K, and CRI of 95.2. The prepared macromolecular complex film further shows vivid color reproduction for real objects, confirming the high rendering index of the macromolecular complex. In addition, the macromolecular complex remains stable up to 272.6 °C, meeting the requirements of operating temperature for LEDs. This work establishes a rapid film-forming macromolecular complex with potential application in NUV-WLEDs.

show abstract

Luminescent Eu(III) coordination polymer cross-linked with Zn(II) complexes

Cited by 22 publications

References 16 publications

Ligand‐Assisted Back Energy Transfer in Luminescent Tb^III Complexes for Thermosensing Properties

Ligand‐Assisted Back Energy Transfer in Luminescent Tb^III Complexes for Thermosensing Properties

Effective photosensitized, electrosensitized, and mechanosensitized luminescence of lanthanide complexes

Tunable white light emission of a large area film-forming macromolecular complex with a high color rendering index

Contact Info

Product

Resources

About

Luminescent Eu(III) coordination polymer cross-linked with Zn(II) complexes

Cited by 22 publications

References 16 publications

Ligand‐Assisted Back Energy Transfer in Luminescent TbIII Complexes for Thermosensing Properties

Ligand‐Assisted Back Energy Transfer in Luminescent TbIII Complexes for Thermosensing Properties

Effective photosensitized, electrosensitized, and mechanosensitized luminescence of lanthanide complexes

Tunable white light emission of a large area film-forming macromolecular complex with a high color rendering index

Contact Info

Product

Resources

About

Ligand‐Assisted Back Energy Transfer in Luminescent Tb^III Complexes for Thermosensing Properties

Ligand‐Assisted Back Energy Transfer in Luminescent Tb^III Complexes for Thermosensing Properties