Recent advances in microwave assisted syntheses of organometallic and coordination compounds

Lara‐Cerón, Jesús A.; Vidyasagar, C. C.; Muñoz‐Flores, Blanca M.; Pérez, Víctor M. Jiménez

doi:10.1016/b978-0-12-821938-6.00016-5

“…The pigment, Eu(TTA) 3 TPPO, was synthesized through solution technique at ambient temperature according to the classical method [16], by following the steps illustrated in Figure 1, and the light emission of complex beneath (a) normal daylight and (b) ultraviolet radiation is shown in Figure 2.…”

Section: Synthesis Of Pigmentmentioning

confidence: 99%

Exploring the Feasibility of Eu(TTA)3TPPO as Pigment for Fluorescent Paint

Rajhans,

Kalyani,

Ugale

et al. 2024

JOPR

0

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We outline the synthesis of rare earth hybrid organic β-diketonate Eu(TTA)3TPPO complex [Eu: Europium, TTA: Thenoyl Trifluoro Acetone, TPPO: Triphenylphosphine oxide] pigment to formulate luminous paints. Epoxy and urea formaldehyde resins were synthesized by catalytic homo polymerization and solution polymerization technique, respectively. The fluorescent pigment was synthesized at ambient temperature by solution technique, maintaining the stoichiometric ratio at pH 7. Nextly, fluorescent paint was developed on glass substrate with epoxy (E) and urea formaldehyde (UF) resins and toluene as solvent with thickness 0.1 mm, respectively. Photoluminescence (PL) spectra and photometric assessment of the complex were carried out to probe its photophysical parameters. The excitation spectra of the synthesized complex depicts a wide-ranging excitation peak at 466 nm with a wide shoulder at 538 nm, while emission spectra discloses an intense peak, recorded at 617 nm which portrays colour in the reddish-orange region of the visible spectrum. The paint compositions were checked for tack-free, hard dry, adhesion, water, salt, alkali and acid spray test to study their resistance against distinct surroundings. The painted panels also portrayed reddish orange emission at a unique wavelength of 617 nm. Amid all the paint compositions, the intensity of the painted panel with urea formaldehyde as a binder was found to be maximum, followed by the painted panel with epoxy as the binder. Photometric evaluation revealed reddish-orange emission from pure pigment as well as painted panels, which portrayed in the visible spectrum. This proposes a way to develop fluorescent paints that find applications in several areas such as flexible displays, glow-in-dark road paints, OLED devices, automotive rare lighting, fluorescent sensors, aircraft cabin and floor lighting, architectural and interior decorations and many more.

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“…The pigment, Eu(TTA) 3 TPPO, was synthesized through solution technique at ambient temperature according to the classical method [16], by following the steps illustrated in Figure 1, and the light emission of complex beneath (a) normal daylight and (b) ultraviolet radiation is shown in Figure 2.…”

Section: Synthesis Of Pigmentmentioning

confidence: 99%

Exploring the Feasibility of Eu(TTA)3TPPO as Pigment for Fluorescent Paint

Rajhans,

Kalyani,

Ugale

et al. 2024

JOPR

0

View full text Add to dashboard Cite

We outline the synthesis of rare earth hybrid organic β-diketonate Eu(TTA)3TPPO complex [Eu: Europium, TTA: Thenoyl Trifluoro Acetone, TPPO: Triphenylphosphine oxide] pigment to formulate luminous paints. Epoxy and urea formaldehyde resins were synthesized by catalytic homo polymerization and solution polymerization technique, respectively. The fluorescent pigment was synthesized at ambient temperature by solution technique, maintaining the stoichiometric ratio at pH 7. Nextly, fluorescent paint was developed on glass substrate with epoxy (E) and urea formaldehyde (UF) resins and toluene as solvent with thickness 0.1 mm, respectively. Photoluminescence (PL) spectra and photometric assessment of the complex were carried out to probe its photophysical parameters. The excitation spectra of the synthesized complex depicts a wide-ranging excitation peak at 466 nm with a wide shoulder at 538 nm, while emission spectra discloses an intense peak, recorded at 617 nm which portrays colour in the reddish-orange region of the visible spectrum. The paint compositions were checked for tack-free, hard dry, adhesion, water, salt, alkali and acid spray test to study their resistance against distinct surroundings. The painted panels also portrayed reddish orange emission at a unique wavelength of 617 nm. Amid all the paint compositions, the intensity of the painted panel with urea formaldehyde as a binder was found to be maximum, followed by the painted panel with epoxy as the binder. Photometric evaluation revealed reddish-orange emission from pure pigment as well as painted panels, which portrayed in the visible spectrum. This proposes a way to develop fluorescent paints that find applications in several areas such as flexible displays, glow-in-dark road paints, OLED devices, automotive rare lighting, fluorescent sensors, aircraft cabin and floor lighting, architectural and interior decorations and many more.

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“…In this study, we present a novel, facile, and scalable microwave (MW)-mediated solution synthesis for Cs 2 TiBr 6 perovskite. This method offers advantages in terms of simplicity, energy-cost, and speed in the synthesis of many other materials. − Here, we develop a specific protocol for obtaining Cs 2 TiBr 6 , minimizing the handling of toxic reagents and avoiding the need for high-energy or high-vacuum setups. The use of acetonitrile as a solvent – with a low boiling point – enhances reaction kinetics and promotes the crystallization of the targeted Cs 2 TiBr 6 phase.…”

Section: Introductionmentioning

confidence: 99%

Microwave-Mediated Synthesis of Lead-Free Cesium Titanium Bromide Double Perovskite: A Sustainable Approach

Reyes-Francis,

Echeverría-Arrondo,

Esparza

et al. 2024

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Theoretical studies have identified cesium titanium bromide (Cs2TiBr6), a vacancy-ordered double perovskite, as a promising lead-free and earth-abundant candidate to replace Pb-based perovskites in photovoltaics. Our research is focused on overcoming the limitations associated with the current Cs2TiBr6 syntheses, which often involve high-vacuum and high-temperature evaporation techniques, high-energy milling, or intricate multistep solution processes conducted under an inert atmosphere, constraints that hinder industrial scalability. This study presents a straightforward, low-energy, and scalable solution procedure using microwave radiation to induce the formation of highly crystalline Cs2TiBr6 in a polar solvent. This methodology, where the choice of the solvent plays a crucial role, not only reduces the energy costs associated with perovskite production but also imparts exceptional stability to the resulting solid, in comparison with previous reports. This is a critical prerequisite for any technological advancement. The low-defective material demonstrates unprecedented structural stability under various stimuli such as moisture, oxygen, elevated temperatures (over 130 °C), and continuous exposure to white light illumination. In summary, our study represents an important step forward in the efficient and cost-effective synthesis of Cs2TiBr6, offering a compelling solution for the development of eco-friendly, earth-abundant Pb-free perovskite materials.

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Recent advances in microwave assisted syntheses of organometallic and coordination compounds

Cited by 4 publications

References 88 publications

Exploring the Feasibility of Eu(TTA)3TPPO as Pigment for Fluorescent Paint

Exploring the Feasibility of Eu(TTA)3TPPO as Pigment for Fluorescent Paint

Exploring the Feasibility of Eu(TTA)3TPPO as Pigment for Fluorescent Paint

Microwave-Mediated Synthesis of Lead-Free Cesium Titanium Bromide Double Perovskite: A Sustainable Approach

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