Aggregation induced emission of chalcones

Kagatikar, Sneha; Sunil, Dhanya

doi:10.1007/s11696-021-01793-7

Cited by 13 publications

(6 citation statements)

References 60 publications

(66 reference statements)

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“…Chalcone derivatives containing the ketoethylenic group (-CO-CH=CH-) provide a rich source for the synthesis of optically active compounds [ 3 ]. These derivatives have great potential for applications due to their specific electronic structures (i.e., a completely delocalized electron system) [ 4 ], photophysical properties [ 5 , 6 , 7 ], and biological activities, such as being antimicrobial [ 8 ], antioxidant [ 9 ], anticonvulsant [ 10 ], inhibitors of inflammatory markers [ 11 ], and antifungal agent [ 12 ]. In recent years, dibenzylidene cyclohexanone derivatives have been used as corrosion inhibitors [ 13 ], fluorescent sensors for detecting Hg 2+ [ 14 ], and chromium ions in aqueous media [ 15 ].…”

Section: Introductionmentioning

confidence: 99%

Solvatochromism, Acidochromism and Photochromism of the 2,6-Bis(4-hydroxybenzylidene) Cyclohexanone Derivative

Homocianu¹,

Serbezeanu²,

Vlad‐Bubulac³

2023

IJMS

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In this paper, we studied the photophysical behavior of 2,6-bis(4-hydroxybenzylidene) cyclohexanone (BZCH) under the influence of various stimuli. The photophysical properties were correlated with different solvent parameters, such as the Kamlet–Abraham–Taft (KAT), Catalán, and Laurence solvent scales, suggesting that the behavior of BZCH is influenced by both nonspecific and specific solvent-solute interactions. The Catalán solvent dipolarity/polarizability parameters were found to have a significant role in the solvatochromic behavior, which is also confirmed by the KAT and Laurence models. The acidochromism and photochromism properties of this sample in dimethylsulfoxide and chloroform solutions were also investigated. The compound showed reversible acidochromism after the addition of dilute NaOH/HCl solutions, accompanied by a change in color and the appearance of a new absorption band (514 nm). The photochemical behavior was also examined by irradiating BZCH solutions with both 254 and 365 nm light.

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Section: Introductionmentioning

confidence: 99%

Solvatochromism, Acidochromism and Photochromism of the 2,6-Bis(4-hydroxybenzylidene) Cyclohexanone Derivative

Homocianu¹,

Serbezeanu²,

Vlad‐Bubulac³

2023

IJMS

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“…The chalcone structure includes an electron donor and an electron-deficient keto group coupled with vinyl as an electron acceptor [35]. Donor-π-Acceptor (D-π-A) systems are a group of molecules that have electrondonor and electron-acceptor groups joined by a conjugated spacer.…”

Section: Introductionmentioning

confidence: 99%

Investigation of fundamental electrical and optoelectronic properties of an organic- and carbon-based MnPc/GC photodiode with high photosensitivity

et al. 2023

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The aim of this work is to provide an alternative to optoelectronic devices that use carbon and organic materials. To achieve this, we coated a modified MnPc organic semiconductor compound onto a graphite-like carbon (GC) thin film using the thermal evaporation technique, and fabricated an organic-based, highly light-sensitive MnPc/GC hybrid heterojunction. The heterojunction had a transmittance of approximately 60% in the visible region, an absorption coefficient of ~106 m-1, and an energy band gap of 2.6 eV. Subsequently, Ag contacts were grown on the surface of each layer, and the Ag/MnPc/GC/Ag photodiode was subjected to fundamental electrical analysis at various light intensities and a ±3 V applied potential. Analysis in a dark environment revealed that the photodiode had a rectification ratio of 2.59 x 103, a series resistance of 28 Ω, and a shunt resistance of 4.17 x 104 Ω, as calculated from Ohm's law. The diode ideality factor and barrier height of the photodiode were determined from thermionic emission theory to be 5.60 and 0.71 eV, respectively, and it was observed that these decreased with increasing light intensity. The photodetector parameters of the MnPc/GC hybrid photodiode were determined under positive and negative applied potentials at various light intensities. The highest photocurrent, photoconductive responsivity, photosensitivity, and specific detectivity were determined to be 1.512 x 10-1 A, 11.52 A.W-1, 9.83 x 105, and 2.48 x 1012 Jones, respectively, which were significantly higher than those reported in literature for organic and inorganic-based photodiodes. Based on the findings, it was concluded that the Ag/MnPc/GC/Ag photodiode holds promise as an alternative for sensors, solar cells, photodetectors, and optoelectronic communications applications.

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“…Aggregation-caused quenching (ACQ) and AIE are opposite phenomena. 49–52 In the aggregated state, the emission intensity of the aggregation-caused quenching luminophores (ACQphores) attenuates, whereas that of the aggregation-induced emission luminogens (AIEgens) increases. Based on the development of SCCs-based materials with tunable emissions, we hypothesized that an SCC synthesized by the integration of ACQ and AIE fluorophores can continuously exhibit in situ tunable emission by modulating the degree of aggregation.…”

Section: Introductionmentioning

confidence: 99%

Amphiphilic rhomboidal metallacycles with aggregation-induced emission and aggregation-caused quenching luminogens for white-light emission and bioimaging

Fan

Zhang

et al. 2022

Mater. Chem. Front.

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Aggregation induced emission of chalcones

Cited by 13 publications

References 60 publications

Solvatochromism, Acidochromism and Photochromism of the 2,6-Bis(4-hydroxybenzylidene) Cyclohexanone Derivative

Solvatochromism, Acidochromism and Photochromism of the 2,6-Bis(4-hydroxybenzylidene) Cyclohexanone Derivative

Investigation of fundamental electrical and optoelectronic properties of an organic- and carbon-based MnPc/GC photodiode with high photosensitivity

Amphiphilic rhomboidal metallacycles with aggregation-induced emission and aggregation-caused quenching luminogens for white-light emission and bioimaging

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