Fluorescence tuning with a single dye embedded in a polymer matrix and its Application on multicolor OLEDs

Pérez–Gutiérrez, Enrique; Percino, M. Judith; Bernal, Wilson; Cerón, Margarita; Ceballos, Paulina; Sosa-Rivadeneyra, Martha; Siegler, Maxime A.; Thamotharan, Subbiah

doi:10.1016/j.dyepig.2020.108979

Cited by 7 publications

(4 citation statements)

References 46 publications

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“…143 A recent illustration of this involved the doping of a single dye, namely (Z)-2-(4-bromophenyl)-3-(4-(diphenylamine)phenyl) acrylonitrile, into a polyvinylcarbazole (PVK) or polystyrene (PS) matrix, where a shift from blue to orange emission (483 to 608 nm) in solid films was achieved through solvatochromism and control over aggregate size. 144 When incorporated into polymers, highly environmentally sensitive probes can display multiple emission readouts dependent on the properties of the attached polymer chains. Recently, Miao and co-workers 145 reported multicolor acrylic polymers enabled by imprisoning a single TICT probe (MAP-NAP, Figure 9A).…”

Section: Emission Color Tuning Via Manipulation Of Microenvironmentmentioning

confidence: 99%

“…For instance, the introduction of a dye exhibiting solvatochromism into a polymer matrix permits the tailoring of emission colors in dye/polymer blends by adjusting the dye doping concentration, a phenomenon known as the solid-state solvation effect . A recent illustration of this involved the doping of a single dye, namely ( Z )-2-(4-bromophenyl)-3-(4-(diphenylamine)phenyl) acrylonitrile, into a polyvinylcarbazole (PVK) or polystyrene (PS) matrix, where a shift from blue to orange emission (483 to 608 nm) in solid films was achieved through solvatochromism and control over aggregate size …”

Section: Emission Color Tuning Via Manipulation Of Microenvironmentmentioning

confidence: 99%

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Recent Advances in Fluorescent Polymers with Color-Tunable Aggregate Emission

Ye,

Bao

2024

Chem. Mater.

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The modulation of fluorescence properties of light-emitting molecules, especially in solid or aggregate states, is crucial for their practical applications. Polymeric systems offer flexible structural design and solution-processing abilities, affording versatile platforms for achieving color-tunable aggregate fluorescence, especially for those with welldefined structures obtained by controlled polymerization. Meanwhile, the emergence of aggregation-induced emission (AIE) and thermally activated delayed fluorescence (TADF) concepts has revolutionized the field of light-emitting materials, including fluorescent polymers. This Review focuses on the recently developed polymer systems that have realized the fine-tuning of aggregate emissions. It delves into various color-tuning mechanisms, exploring molecular interactions such as dye−dye interactions, charge transfer, energy transfer, and the polymeric microenvironment. Special attention is given to through-space charge transfer (TSCT) and unconventional Forster resonance energy transfer (FRET), which have garnered significant interest recently. We aim to offer valuable insights into molecular structural design from the perspective of fluorescence color-tuning and eventually provide an outlook on potential directions for future research in this field.

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Section: Emission Color Tuning Via Manipulation Of Microenvironmentmentioning

confidence: 99%

Section: Emission Color Tuning Via Manipulation Of Microenvironmentmentioning

confidence: 99%

Recent Advances in Fluorescent Polymers with Color-Tunable Aggregate Emission

Ye,

Bao

2024

Chem. Mater.

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“…In contrast, high vacuum evaporation is mainly used for small molecules, although recently solution deposition has also been used [1][2][3]. Today, many optoelectronic devices are based on small molecules firstly because of the versatility of the synthesis and secondly because of their optoelectronic properties, which allow tuning by modifying their molecular structure with functional groups [4][5][6][7][8][9]. The spin coating technique is the most common method for depositing organic semiconductor films from a solution, mainly used at the lab scale.…”

Section: Introductionmentioning

confidence: 99%

Solvent Effect on Small-Molecule Thin Film Formation Deposited Using the Doctor Blade Technique

et al. 2023

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Small molecule thin films are the core of some organic optoelectronic devices. Their deposition by solution processes is an advantage for device fabrication and can be achieved via spin coating for small areas and slot-die or doctor blade for larger areas. Solution deposition of small molecule thin films is usually processed only with medium polarity solvents. Herein, the use and influence of solvents with several polarities and physicochemical properties to form small-molecule homogeneous thin films via the doctor blade technique over an area of 25 cm2 have been explored. Solvents with different polarity, heptane, chlorobenzene, N,N-dimethylformamide, acetonitrile, and methanol were used along with different deposition temperatures, from room temperature up to near the boiling temperature for each solvent. With heptane and chlorobenzene, smooth films with an average roughness of 3 nm and thickness of 100–120 nm were obtained. The film was homogeneous over the whole substrate for temperatures from room temperature to close to the boiling temperature of both solvents. On the other hand, with dimethylformamide, a film is observed when the deposition is conducted only at room temperature; when the deposition temperature increases, the formation of agglomerates of several sizes from 1 to 5 nm was observed. With acetonitrile, and methanol, no films were formed, and only nanoaggregates were created on the substrate due to the solvent high vapor pressure, and the agglomerate size depends on the deposition temperature. The measure of the contact angle of pure solvent and solutions indicated that wettability helps to film formation over the whole substrate. For heptane and chlorobenzene, a small angle was measured; meanwhile, the contact angle is large in acetonitrile leading to the formation of nanoaggregates. In the case of methanol solution, although it wets very well, no film is deposited because it has high volatility.

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“…Among materials that can be used as an organic layers, some are based on organic polymers [13][14][15][16][17][18] and others are based on small molecules. [19][20][21] In addition, these materials can be fluorescent or phosphorescent, such as the oxadiazoles used as emissive material for the first blue OLEDs, [22,23] distyryl arenes used as an emitter of blue light, [24,25] rubrene as a dye based on small molecules, [26,27] and chelate lanthanide complexes as phosphorescent small molecules.…”

Section: Introductionmentioning

confidence: 99%

Electronic structures and photophysical properties of carbazole‐ and thiophene‐based organic compounds used as hole‐injecting layer for organic light‐emitting diodes (OLEDs)

et al. 2022

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In this study, we have carried out a theoretical study on six organic compounds based on thiophene and carbazole, with the aim of using them as a hole-injecting layer of organic light-emitting diodes (OLEDs). In this study, we have tested two types of structures: D-π-D for MO1, MO2, MO3, and MO4 compounds and D-π-A for MO5 and MO6 compounds. The correlation structure-properties of these studied compounds have been proceeded and discussed by analyzing highest occupied molecular orbital (HOMO), lowest unoccupied molecular orbital (LUMO), energy gap, polarization effect, atom transition density matrix, absorption, and photoluminescence (PL). This theoretical study, based on density functional theory (DFT)/TPSSTPSS/aug-cc-pVQZ and the integral-equation-formalism polarizable continuum model/

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Fluorescence tuning with a single dye embedded in a polymer matrix and its Application on multicolor OLEDs

Cited by 7 publications

References 46 publications

Recent Advances in Fluorescent Polymers with Color-Tunable Aggregate Emission

Recent Advances in Fluorescent Polymers with Color-Tunable Aggregate Emission

Solvent Effect on Small-Molecule Thin Film Formation Deposited Using the Doctor Blade Technique

Electronic structures and photophysical properties of carbazole‐ and thiophene‐based organic compounds used as hole‐injecting layer for organic light‐emitting diodes (OLEDs)

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