Discovery of novel inorganic Mn5+-doped sky-blue pigments based on Ca6BaP4O17: Crystal structure, optical and color properties, and color durability

Kim, Sun Woog; Sim, Go Eun; Ock, Ji Young; Son, Jae-Han; Hasegawa, Tetsuya; Toda, Kenji; Bae, Dong‐Sik

doi:10.1016/j.dyepig.2016.12.038

Cited by 31 publications

(15 citation statements)

References 28 publications

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“…In this equation,

refers to the cuvette (1 cm × 1 cm) and the concentration of the pigment solution is 1%; A means the absorbance at the maximum absorption wavelength ( λ max ) of the pigment solution; V (mL) means the volume of the pigment solution; m (g) meansthe quality of the pigment. The color properties of the pigment were evaluated in terms of the CIE L*a*b* system [ 28 , 29 , 30 ]. Where L* is the brightness, a* is the green (-) or red (+), and b* represents the blue (-) or yellow (+).…”

Section: Methodsmentioning

confidence: 99%

Preparation and Characterization of Water-Insoluble Gardenia Blue Pigment

Gao

Liu

et al. 2021

Materials

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Based on molecular simulations, the synthetic route of water-insoluble gardenia blue pigment was prepared by the reaction of genipin and L-Phenylalanine methyl ester hydrochloride. A highly purified pigment was obtained after extraction by chloroform and purification by silica gel column chromatography, and the value of color is up to 288. A study on the structural characteristics of the pigment was implemented with a scanning electron microscope, ultraviolet-visible spectrophotometer, Fourier transform infrared spectrometer, X-ray photoelectron spectrometer, and quatropde-time of flight mass spectrometer. The results showed that the surface of the pigment was largely smooth and spherical; The λmax was 607 nm, and the main functional groups include O-C=O, C=O, C-N, C=C, OH, and benzene ring; We detrained six different molecular weight and chemical structures of pigments and speculated the particular structures and formation mechanisms of three kinds of pigment, whose molecular weights are 690.1156, 720.1226, and 708.1246 Da, respectively. The pigment was only able to be dissolved in ethanol, methanol, acetone, ethyl acetate, and other strong polar organic solvents, but was not able to be dissolved in water, ethyl ether, petroleum ether, and other weak polar organic solvents. In terms of light and thermal stabilities, water-insoluble gardenia blue pigment is significantly better than water-soluble gardenia blue pigment (p < 0.05). When it is under direct light for 7 days or incubated at 80–120 °C for 24 h, the pigment residual rates were 74.90, 95.26, 88.27, and 87.72%, respectively.

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“…In this equation,

Section: Methodsmentioning

confidence: 99%

Preparation and Characterization of Water-Insoluble Gardenia Blue Pigment

Gao

Liu

et al. 2021

Materials

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“…6 The attribution of color to these matrices occurs with the insertion of chromophore ions; transition metals such as V, Cr, Mn, Fe, Co, Ni, and Cu are commonly used for this purpose. 7 In general, the use of inorganic compounds tends to increase the chemical and physical stability of the pigments, 8 ensuring greater durability.…”

Section: Introductionmentioning

confidence: 99%

Color stability of blue aluminates obtained from recycling and applied as pigments

et al. 2023

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“…21,22 Mn 5+ in a tetrahedral coordination is reported to be turquoise or sky blue. 19,23 In these pigments, monovalent Mn is required to avoid color impurity and low chromogenic efficiency. Most previous reports have taken efforts to stabilize the desired Mn valence state by controlling the Mn concentration and/or reaction conditions.…”

Section: Introductionmentioning

confidence: 99%

“…Intense color in inorganic solids can arise through d–d electron transitions, charge transfer (CT), or intervalence CT within a chromophore. − Manganese (Mn) is an extraordinary chromophore in that its unfilled 3 d electron shell and variable oxidation states can render rich color regions from specific electronic transitions. − Mn 2+ doping into ZnO 4 tetrahedra of α-Zn 2 SiO 4 yields a yellowish glass . Mn 3+ displays an intense bright blue or violet color when it is hosted in trigonal-bipyramidal 5-coordination in Y(Ga, In)O 3 and melilite structured LaAlGe 2 O 7 . ,, Mn 4+ in a different host could be green, red, or brown. , Mn 5+ in a tetrahedral coordination is reported to be turquoise or sky blue. , In these pigments, monovalent Mn is required to avoid color impurity and low chromogenic efficiency. Most previous reports have taken efforts to stabilize the desired Mn valence state by controlling the Mn concentration and/or reaction conditions.…”

Section: Introductionmentioning

confidence: 99%

Robust Yellow-Violet Pigments Tuned by Site-Selective Manganese Chromophores

et al. 2021

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The rational design of multifunctional inorganic pigments relies on the manipulation of ionic valence and local surroundings of a chromophore in structurally and chemically habitable hosts. To date, the development of environmentally benign and intense violet/purple pigments is still a challenge. Here we report a family of A 3−x Mn x TeO 6 and A 3−2x Mn x Li x TeO 6 (A = Zn, Mg; x = 0.01−0.15) pigments colored by site-selective Mn 2+ O 4 yellow and Mn 3+ O 5−6 violet chromophores. Zn 2.9 Mn 0.1 TeO 6 is intense bright yellow, comparable with commercial BiVO 4 , and has better near-infrared reflectivity (∼89%) in comparison to commercial TiO 2 . The codoped Li + "activator" generates holes and chargebalanced Mn 3+ (Mn 3+ O 5−6 ), realizing a color transformation from yellow to the bright violet pigments of A 3−2x Mn x Li x TeO 6 . The most vivid Mg 2.8 Mn 0.1 Li 0.1 TeO 6 is probably the best violet pigment known to date, exhibits excellent chemical and thermodynamic stability, and demonstrates pressure-dependent stability up to 5−7 GPa, before a (reversible) phase transition to pink. Theoretical calculations revealed the correlation between site-preference occupancy and chromophore motifs and predicted a wide color gamut of pigments in Zn 3 TeO 6 -hosted 3d transition-metal ions other than manganese.

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Discovery of novel inorganic Mn5+-doped sky-blue pigments based on Ca6BaP4O17: Crystal structure, optical and color properties, and color durability

Cited by 31 publications

References 28 publications

Preparation and Characterization of Water-Insoluble Gardenia Blue Pigment

Preparation and Characterization of Water-Insoluble Gardenia Blue Pigment

Color stability of blue aluminates obtained from recycling and applied as pigments

Robust Yellow-Violet Pigments Tuned by Site-Selective Manganese Chromophores

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