Reactivity of bis(long chain substituted β-diketonato)palladium(II) [Pd(OOR2)2] towards HBF4: formation of luminescent [BF2(OOR2)] derivatives. X-ray structure of [1,3-di(4-n-butoxyphenyl)propane-1,3-dionato]difluoroboron(III)

Muñoz, Marı́a A.; Cano, Mercedes; Campo, José A.; Heras, J.V.; Pinilla, Elena; Torres, M. Rosario

doi:10.1016/j.inoche.2004.06.011

Cited by 9 publications

(1 citation statement)

References 22 publications

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“…As observed in Figure 4 A, the β-diketonate ligand shows a great planarity; the coumarin moiety presents a small deviation with respect to the diketonate group (dihedral angle C8-C9-C13-O15 of 154.4°), and the benzene group is slightly rotated with respect to the diketone plane (torsion angle of 2.0°). The coordination to the BF 2 fragment generates a six-membered cycle with B-F and B-O bond lengths of 1.5 Å, which agrees with diketonate-based borondifluoride complexes reported in the literature [ 30 ]. Selected bond lengths and angles are collected in the supporting information (Tables S1–S3) .…”

Section: Resultssupporting

confidence: 86%

Exploring Coumarin-Based Boron Emissive Complexes as Temperature Thermometers in Polymer-Supported Materials

Pedro

Duarte

Cheptsov

et al. 2023

Sensors

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Three coumarin-based boron complexes (L1, L2 and L3) were designed and successfully incorporated into polymeric matrixes for evaluation as temperature probes. The photophysical properties of the complexes were carried out in different solvents and in the solid state. In solution, compound L1 exhibited the highest fluorescence quantum yield, 33%, with a positive solvatochromism also being observed on the absorption and emission when the polarity of the solvent increased. Additionally in the presence of anions, L1 showed a colour change from yellow to pink, followed by a quenching in the emission intensity, which is due to deprotonation with the formation of a quinone base. Absorption and fluorescence spectra of L1 were calculated at different temperatures by the DFT/B3LYP method. The decrease in fluorescence of compound L1 with an increase in temperature seems to be due to the presence of pronounced torsional vibrations of the donor and acceptor fragments relative to the single bond with C(carbonyl)-C (styrene fragment). L1, L2 and L3, through their incorporation into the polymeric matrixes, became highly emissive by aggregation. These dye@doped polymers were evaluated as temperature sensors, showing an excellent fluorescent response and reversibility after 15 cycles of heating and cooling.

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Section: Resultssupporting

confidence: 86%

Exploring Coumarin-Based Boron Emissive Complexes as Temperature Thermometers in Polymer-Supported Materials

Pedro

Duarte

Cheptsov

et al. 2023

Sensors

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Synthesis, Structure and Photophysical Properties of a New Class of Inherently Chiral Boron(III) Chelates—The tert‐Leucine Complexes

Algoazy

Knight

Waddell

et al. 2021

Chemistry A European J

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A new family of boron(III) chelates is introduced whereby molecular chirality, confirmed by circular dichroism, is imported during synthesis such that isolation of the diastereoisomers does not require separation procedures. The photophysical properties of two members of the family have been examined: the N,O,O‐salicylaldehyde‐based derivative shows pronounced intramolecular charge‐transfer character in fluid solution and is weakly fluorescent, with a large Stokes shift. The corresponding 2‐methylamino‐benzaldehyde‐derived N,N,O‐chelate absorbs and fluoresces in the visible region with a much smaller Stokes shift. Orange fluorescence is also observed for this compound as a cast film. Temperature‐dependence studies show that decay of the fluorescent state is weakly activated but emission is less than quantitative at 77 K. Quite rare for boron(III)‐based chelates, this derivative undergoes intersystem crossing to form a meta‐stable triplet‐excited state. X‐ray crystal structures are reported for both compounds, along with simulated ECD spectra.

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Liquid crystal behavior induced in highly luminescent unsymmetrical borondifluoride β-diketonate materials

Sánchez

Campo

Heras

et al. 2012

Inorganica Chimica Acta

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Reactivity of bis(long chain substituted β-diketonato)palladium(II) [Pd(OOR2)2] towards HBF4: formation of luminescent [BF2(OOR2)] derivatives. X-ray structure of [1,3-di(4-n-butoxyphenyl)propane-1,3-dionato]difluoroboron(III)

Cited by 9 publications

References 22 publications

Exploring Coumarin-Based Boron Emissive Complexes as Temperature Thermometers in Polymer-Supported Materials

Exploring Coumarin-Based Boron Emissive Complexes as Temperature Thermometers in Polymer-Supported Materials

Synthesis, Structure and Photophysical Properties of a New Class of Inherently Chiral Boron(III) Chelates—The tert‐Leucine Complexes

Liquid crystal behavior induced in highly luminescent unsymmetrical borondifluoride β-diketonate materials

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