Synthesis and photophysical properties of metal complexes of curcumin dyes: Solvatochromism, acidochromism, and photoactivity

França, Bruna M. de; Oliveira, Simone S. C.; Souza, Lucieri O.P.; Mello, Thaís Pereira de; Santos, André Luis Souza dos; Forero, Josué S. Bello

doi:10.1016/j.dyepig.2021.110011

Cited by 19 publications

(14 citation statements)

References 76 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…It had a low quantum yield in solution (0.04), although it was slightly higher than the quantum yield of the free ligand (0.03). In 2022, de França et al [ 96 ] synthesized the complex 93 ( Figure 26 b) using Curcumin dye in combination with 1,10-phenanthroline. The complex exhibits strong solvatochromism.…”

Section: Palladium Coordination Complexesmentioning

confidence: 99%

See 1 more Smart Citation

Luminescence and Palladium: The Odd Couple

Dalmau

Urriolabeitia

2023

Molecules

View full text Add to dashboard Cite

The synthesis, photophysical properties, and applications of highly fluorescent and phosphorescent palladium complexes are reviewed, covering the period 2018–2022. Despite the fact that the Pd atom appears closely related with an efficient quenching of the fluorescence of different molecules, different synthetic strategies have been recently optimized to achieve the preservation and even the amplification of the luminescent properties of several fluorophores after Pd incorporation. Beyond classical methodologies such as orthopalladation or the use of highly emissive ligands as porphyrins and related systems (for instance, biladiene), new concepts such as AIE (Aggregation Induced Emission) in metallacages or in coordination-driven supramolecular compounds (CDS) by restriction of intramolecular motions (RIM), or complexes showing TADF (Thermally Activated Delayed Fluorescence), are here described and analysed. Without pretending to be comprehensive, selected examples of applications in areas such as the fabrication of lighting devices, biological markers, photodynamic therapy, or oxygen sensing are also here reported.

show abstract

Section: Palladium Coordination Complexesmentioning

confidence: 99%

“… ( a ) and ( b ) Pd(II) coordination complexes 92, 93 containing 1,10-phenantroline as ancillary ligand; ( c ) and ( d ) Pd(II) coordination complexes 94 containing imines as ancillary ligands. Adapted from [ 95 , 96 , 97 ]. …”

Section: Figurementioning

confidence: 99%

Luminescence and Palladium: The Odd Couple

Dalmau

Urriolabeitia

2023

Molecules

View full text Add to dashboard Cite

show abstract

“…The blue shift of both cur's absorption and emission spectra can be attributed to the solvatochromic effect of encapsulation on the molecule. Both cur's emission and absorption show hypsochromic shifts as the polarity of the environment decreases 21,28,29 . Results indicate that cur has been effectible encapsulated into the nanomicelles, furthermore, both the absorbance and emission intensity increased considerably, as once encapsulated cur is on a more favorable environment.…”

Section: Resultsmentioning

confidence: 91%

“…Both cur's emission and absorption show hypsochromic shifts as the polarity of the environment decreases. 21,28,29 Results…”

Section: Resultsmentioning

confidence: 99%

Applications of curcumin loaded nanoemulsions in photoinactivation of Aspergillus niger spores

et al. 2023

View full text Add to dashboard Cite

Background: Aspergillus niger is one of the most common fungal contaminants of food products, leading to several economic losses on fruit, vegetables and other food products during storage. Over the years, several new techniques have been developed to control fungal growth, including photodynamic inactivation, in which excitation of a photosensitizer in the right wavelength leads to ROS production and microbial death.Results: On this paper, curcumin was used as a natural photosentitizer against A. niger spores. Nanoemulsions were used in order to encapsulated curcumin and increase its water solubility. Results showed that spores inhibition could reach up to 80% after 3 min of irradiation while values for un-encapsulated curcumin were around 30%. Conclusion:Results presented show that nanoemulsions could be use to enhance the photoinactivation properties of curcumin, against fungal spores from A. niger. This type of process can be use for food decontamination and preservation.

show abstract

“…Stimulus-responsive smart materials have attracted considerable interest from scientists and engineers in recent years due to their essential scientific and technological applications. [1][2][3][4][5][6] Upon external stimuli, such as light, [7,8] pressure, [9] chemical, [10,11] electricity, [12][13][14][15] and temperature, [16][17][18] the colors of such chromic materials can be reversibly switched. Among various chromic smart materials, photochromic (PC) and electrochromic (EC) materials have received tremendous attention owing to their DOI: 10.1002/admt.202300454 extensive applications in displays, optical sensors, smart windows, and information storage and encryptions.…”

Section: Introductionmentioning

confidence: 99%

Photochromic and Electrochromic Hydrogels based on Electron Donor and Acceptor Bridged Viologen Derivatives for Multifunctional Signage Applications

Liang

Guo

et al. 2023

Adv Materials Technologies

View full text Add to dashboard Cite

Inserting a conjugated bridge between the two pyridinium units of the viologen is an effective approach to tuning the colorations of the viologen derivatives. However, the relationship between the charge density on the viologen bridge and the related photochromic (PC) and electrochromic (EC) properties has been rarely studied. Herein, three conjugated bridges with different charge densities, i.e., thienyl, phenyl, and quinoxalinyl groups, are incorporated between the two pyridinium units of ammonium‐functionalized viologens. The coloration scope of the viologens before and after chromism is expanded due to the adjusted intramolecular charge transfer interactions. Moreover, the introduction of an electron‐withdrawing bridge is greatly beneficial to the chromic properties of the conjugation‐extended viologens in polyacrylamide hydrogels. The EC device based on AQV hydrogel exhibits the highest optical contrast of 85% at 580 nm, the fastest switching time (1.0 and 0.9 s for coloration and bleaching processes, respectively), and no decay in optical contrast after 1000 EC cycles. Furthermore, multifunctional and multicolored signages as sports icons and traffic signs are fabricated and demonstrated. Variable traffic signs presenting “Permitted”, “Warning”, and “Prohibited” cautions for pedestrians and vehicles can be realized in a single device with only one piece of ITO glass.

show abstract

Synthesis and photophysical properties of metal complexes of curcumin dyes: Solvatochromism, acidochromism, and photoactivity

Cited by 19 publications

References 76 publications

Luminescence and Palladium: The Odd Couple

Luminescence and Palladium: The Odd Couple

Applications of curcumin loaded nanoemulsions in photoinactivation of Aspergillus niger spores

Photochromic and Electrochromic Hydrogels based on Electron Donor and Acceptor Bridged Viologen Derivatives for Multifunctional Signage Applications

Contact Info

Product

Resources

About