Terbium β‐Diketonate Based Highly Luminescent Soft Materials

Tang, Si‐Fu; Mudring, Anja‐Verena

doi:10.1002/ejic.200900114

Cited by 35 publications

(24 citation statements)

References 35 publications

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“…One of the CF 3 groups of one of the hfac ligands is found disordered. The Tb-O distances range from 2.345 (3) to 2.373 (3) Å, which are comparable to those reported for other tetrakis(acetylacetonato)-Tb(III) complexes (Tang & Mudring, 2009) Figure 2). Through the linkage of these intra-and intermolecular C-H•••F interactions, a two-dimensional layer is formed in the (010)-plane.…”

Section: Supporting Informationsupporting

confidence: 85%

“…Through the linkage of these intra-and intermolecular C-H•••F interactions, a two-dimensional layer is formed in the (010)-plane. These layers are further building up a threedimensional network, with the hfac CF 3 groups at the interfaces of the layers, as has been already noticed for other Tb(hfac) 4 complexes, although with different C 4 mim and C 4 mpyr counterions (Tang & Mudring, 2009) (Figure 3).…”

Section: Supporting Informationsupporting

confidence: 53%

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Tetraethylammonium tetrakis(1,1,1,5,5,5-hexafluoroacetylacetonato)terbate(III)

Deun

Voort

Driessche

et al. 2012

Acta Crystallogr E Struct Rep Online

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The title compound, (C8H20N)[Tb(C5HF6O2)4], is a tetrakis β-diketonate complex of hexafluoroacetylacetone with terbium(III), and tetraethylammonium as the counter-ion. This compound shows typical green terbium(III) luminescence upon excitation at about 335 nm. The coordination geometry around the TbIII atom is a slightly distorted square antiprism. One hexafluoroacetylacetone ligand has a disordered CF3 group [occupancies of 0.575 (4) and 0.425 (4)]. A three-dimensional network is built up by linkage of TbIII complexes via C—H⋯F interactions.

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Section: Supporting Informationsupporting

confidence: 85%

Section: Supporting Informationsupporting

confidence: 53%

Tetraethylammonium tetrakis(1,1,1,5,5,5-hexafluoroacetylacetonato)terbate(III)

Deun

Voort

Driessche

et al. 2012

Acta Crystallogr E Struct Rep Online

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“…[16,[20][21][22][23] The exploration of ILs in inorganic materials chemistry is, however, still in its infancy relative to other fields. [24][25][26][27][28][29][30][31][32][33][34][35][36][37][38] Recent developments in the use of room temperature ionic liquids (RTILs) as reaction media for inorganic nanomaterials have mainly focused on taking advantage of the preorganized structure of the RTILs to template porous inorganic nanomaterials and the intrinsic high charge and polarizability of the RTILs to create electrostatic and steric stabilization for nanoparticles. [39][40][41][42][43][44][45][46][47][48][49][50][51][52][53] Much attention has been devoted to the preparation of nanostructured inorganic materials with various morphologies by ultrasound synthesis and sonochemistry.…”

Section: Introductionmentioning

confidence: 99%

Sonochemical Synthesis of 0D, 1D, and 2D Zinc Oxide Nanostructures in Ionic Liquids and Their Photocatalytic Activity

Alammar

Mudring

2011

ChemSusChem

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Ultrasound synthesis of zinc oxide from zinc acetate and sodium hydroxide in ionic liquids (ILs) is a fast, facile, and effective, yet highly morphology- and size-selective route to zinc oxide nanostructures of various dimensionalities. No additional organic solvents, water, surfactants, or templating agents are required. Depending on the synthetic conditions, the selective manufacturing of 0D, 1D, and 2D ZnO nanostructures is possible: Whereas the formation of rodlike structures is typically favored, ZnO nanoparticles can be obtained either under strongly basic conditions or by use of ILs with a long alkyl chain, such as 1-n-alkyl-3-methylimidazolium bis(trifluoromethanesulfonyl)imide ([C(n)mim][Tf(2)N]; n>8). A short ultrasound irradiation time favors the formation of ZnO nanosheets. Prolonged irradiation leads to the conversion of the ZnO nanosheets into nanorods. In contrast, ionothermal synthesis (conventional heating) does not allow for morphology tuning by variation of the IL or other synthesis conditions, as the longer reaction times required lead always to the formation of well-developed hexagonal nanocrystals with prismatic tips. The ZnO nanostructures synthesized by using ultrasound were efficient photocatalysts in the photodegradation of methyl orange. The photoactivity was observed to be as high as 95 % for ZnO nanoparticles obtained in [C(10)mim][Tf(2)N].

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“…S9 †). The thermal phase behaviors of the synthesized bisimidazolium BF 4 À salts are summarized in Table 1. Also, the dependence of melting temperature and solid-solid phase transition temperature on the side-chain length of the imidazolium salts is shown in Fig.…”

Section: Introductionmentioning

confidence: 99%

“…Therefore, the LC phase was formed from the crystalline phase aer the large heat absorptions, and the LC phase was maintained up to 240 C. The isotropic phase was also conrmed by XRD above 254 C, where no signicant peak was observed at a value larger than 2q ¼ 5 . Ionic conductivity as a function of temperature while cooling was measured for the bis-imidazolium BF 4 À salts using dielectric relaxation spectroscopy. These salts generally reveal conductivities in the range from 10 À14 to 10 À3 S cm À1 with discontinuities and changes in slopes at either the solid-solid or melting phase transitions.…”

Section: Introductionmentioning

confidence: 99%

Interesting phase behaviors and ion-conducting properties of dicationic N-alkylimidazolium tetrafluoroborate salts

et al. 2019

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A series of dicationic imidazolium bis(tetrafluoroborate) salts were newly synthesized, and their phase transition behaviors were correlated with thermal, scattering, optical and conductivity results. The bisimidazolium salts having side-chain lengths of C 6 -C 10 showed plastic crystal mesophases, while a liquid crystal mesophase was formed in the bis-imidazolium salts with long side-chains (C 11 and C 12 ). Soft plastic and liquid crystalline phases were also confirmed by wide-angle X-ray diffraction. For the bisimidazolium salts exhibiting a plastic crystal mesophase, the ionic conductivity suddenly increased at the melting temperature. However, the bis-imidazolium salts with long side-chains showed a slope increase during the liquid crystal-liquid crystal transition. Results and discussionThe synthetic scheme of the dicationic imidazolium BF 4 À salts is shown in Fig. 1. The bromide salt of 1,2-bis(N-alkyl-a P DS ss is calculated from the summation of DS ss values at all T ss transitions. 16 b DS f ¼ DH f (J mol À1 )/T (K). 17 c C4 showed T g at À31 C on the second heating scan. d Two heat absorption peaks only on the rst heating scan but no heat absorption peak on the second heating scan.This journal is

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Terbium β‐Diketonate Based Highly Luminescent Soft Materials

Cited by 35 publications

References 35 publications

Tetraethylammonium tetrakis(1,1,1,5,5,5-hexafluoroacetylacetonato)terbate(III)

Tetraethylammonium tetrakis(1,1,1,5,5,5-hexafluoroacetylacetonato)terbate(III)

Sonochemical Synthesis of 0D, 1D, and 2D Zinc Oxide Nanostructures in Ionic Liquids and Their Photocatalytic Activity

Interesting phase behaviors and ion-conducting properties of dicationic N-alkylimidazolium tetrafluoroborate salts

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