Liquid Crystals: Characteristics, Types of Phases and Applications in Drug Delivery

Shete, Amol; Nadaf, Sameer J.; Doijad, Rajendra; Killedar, Suresh G.

doi:10.1007/s11094-021-02396-y

Cited by 5 publications

(4 citation statements)

References 141 publications

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“…Discotic liquid crystal (DLC) is a class of versatile soft materials 1,2 that has found its way into multidiscipline such as energy generation, 3 energy storage, 4 photovoltaics, 5,6 drug delivery, 7 sensing, 8,9 and various nanomaterial 10 applications; not only because of their cost-effective synthetic process and tunability but also for their ability to self-assemble into onedimensional charge-carrying columns as molecular wire and their gradual self-assembly into two-dimensional columnar mesophases. Among the large pool of discotic materials, triphenylenes are the most extensively studied DLCs and have been excessively tuned to obtain countless new desired properties.…”

Section: ■ Introductionmentioning

confidence: 99%

“…Discotic liquid crystal (DLC) is a class of versatile soft materials , that has found its way into multidiscipline such as energy generation, energy storage, photovoltaics, , drug delivery, sensing, , and various nanomaterial applications; not only because of their cost-effective synthetic process and tunability but also for their ability to self-assemble into one-dimensional charge-carrying columns as molecular wire and their gradual self-assembly into two-dimensional columnar mesophases. Among the large pool of discotic materials, triphenylenes are the most extensively studied DLCs and have been excessively tuned to obtain countless new desired properties. − Introduction of heteroatoms into the electron-rich triphenylene skeleton and substitution of electron-deficient functional groups at the peripheral region are the few common methods of chemical modifications that have been used to bring about desired improvements of properties in these discotic cores. − The electron-deficient materials, due to having lower LUMO (lowest unoccupied molecular orbital), significantly improve the injection of charges at the electrode .…”

Section: Introductionmentioning

confidence: 99%

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Exploring the Ambipolar Charge Carrier Mobility, Mesomorphic, and Gel Properties in Nitrile Extended Quinoxaline and Phenanthro[a]phenazine Discotic Liquid Crystals

Patra,

Behera,

Shah

et al. 2024

ACS Appl. Electron. Mater.

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A set of cyano-substituted dibenzo-quinoxaline and phenanthro-phenazine discotic mesomorphs have been synthesized, and the impact of ring closure on thermal, optical, electronic, and physical properties has been investigated. Although dibenzoquinoxaline shows incredible fluorescence and a low-temperature mesophase, a straightforward ring closure has decreased the molecular distortion in the case of phenanthro-phenazine, thereby resulting in a more stable arrangement. A robust columnar hexagonal self-assembly in the phenanthro[a]phenazine compound facilitates a hole mobility of 1.02 × 10 −2 cm 2 V −1 s −1 , which is 100-fold more than that of the dibenzo quinoxaline analogue. This demonstrates the tunability in self-assembly as well as the physical and electronic properties of discotic liquid crystalline materials with a simple modification in the chemical structure. A study of their gelation properties has also been explored, and models of the organization of molecules within the individual fiber in the gel network have been proposed in agreement with X-ray diffraction studies. These two sets of low band gap ambipolar materials have significant potential to be used in the fabrication of various optoelectronic devices.

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Section: ■ Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Exploring the Ambipolar Charge Carrier Mobility, Mesomorphic, and Gel Properties in Nitrile Extended Quinoxaline and Phenanthro[a]phenazine Discotic Liquid Crystals

Patra,

Behera,

Shah

et al. 2024

ACS Appl. Electron. Mater.

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show abstract

“…In the past couple of years, many reviews have come up that can guide the readers to gain a comprehensive view of LCs as versatile new-age functional materials. [20][21][22][23][24] In this account, we have summarized the efforts made by our group as well as other groups to explore DLCs as a class of organic materials with high potential as emissive layers in OLEDs. Although thermal and solid-state behavior of each material discussed have also been extensively studied in their respective reports along with other widespread applications, herein we choose to focus on their optical and electroluminescence studies, along with their performances in fabricated OLED devices.…”

Section: Introductionmentioning

confidence: 99%

“…LCs, in general, have emerged as a vastly interdisciplinary field of study, introducing themselves into diversified concepts of energy, electronics, actuation, photonics, sensing and bio‐medicine. In the past couple of years, many reviews have come up that can guide the readers to gain a comprehensive view of LCs as versatile new‐age functional materials [20–24] . In this account, we have summarized the efforts made by our group as well as other groups to explore DLCs as a class of organic materials with high potential as emissive layers in OLEDs.…”

Section: Introductionmentioning

confidence: 99%

Discs to a ‘Bright’ Future: Exploring Discotic Liquid Crystals in Organic Light Emitting Diodes in the Era of New‐Age Smart Materials

Sharma

Sengupta

et al. 2022

The Chemical Record

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With the advent of a new decade and the paradigm shift of every sphere of urban life to virtual platforms, it has become imperative for the global researcher community to channelize efforts into upgradation of the existing display‐technology. In this context, discotic liquid crystals (DLCs) are a class of self‐assembling organic materials that are recently being explored in fabricating the emissive layers of organic light emitting diodes (OLEDs). With their unique inherent structural and functional properties, they have the potential to challenge the currently prevailing OLED‐emitters. Yet the applications of this promising class of materials in OLEDs have not been comprehensively reviewed in literature till now. In this account, we present an overview of the developments in the field of luminescent DLC‐based emitters, supported by their associated photophysical phenomena and their performance parameters as emitters in fabricated OLED devices.

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Novel Self‐Assembling Supramolecular Phenanthro[9,10‐a]phenazine Discotic Liquid Crystals: Synthesis, Characterization and Charge Transport Studies

Patra,

Shah,

Singh

et al. 2024

Chemistry An Asian Journal

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The incorporation of heteroatoms in the chemical structure of organic molecules has been identified as analogous to the doping process adopted in silicon semiconductors to influence the nature of charge carriers. This strategy has been an eye‐opener for material chemists in synthesizing new materials for optoelectronic applications. Phenanthro[9,10‐a]phenazine‐based mesogens have been synthesized via a cyclo‐condensation pathway involving triphenylene‐based diketones and o‐phenyl diamines. The incorporation of phenazine moiety as discussed in this paper, alters the symmetric nature of the triphenylene. The phenanthro[9,10‐a]phenazine‐based mesogens exhibited hole mobility in the order of 10‐4 cm2/Vs as measured by the space‐charge limited current (SCLC) technique. The current density in SCLC device increases with increasing temperature which indicates that the charge transport is associated with the thermally activated hopping process. This report attempts to elucidate the self‐organization of asymmetric phenanthro[9,10‐a] phenazine in the supramolecular liquid crystalline state and their potential for the fabrication of high‐temperature optoelectronic devices. However, the low charge carrier mobility can be one of the challenges for device performance.

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Liquid Crystals: Characteristics, Types of Phases and Applications in Drug Delivery

Cited by 5 publications

References 141 publications

Exploring the Ambipolar Charge Carrier Mobility, Mesomorphic, and Gel Properties in Nitrile Extended Quinoxaline and Phenanthro[a]phenazine Discotic Liquid Crystals

Exploring the Ambipolar Charge Carrier Mobility, Mesomorphic, and Gel Properties in Nitrile Extended Quinoxaline and Phenanthro[a]phenazine Discotic Liquid Crystals

Discs to a ‘Bright’ Future: Exploring Discotic Liquid Crystals in Organic Light Emitting Diodes in the Era of New‐Age Smart Materials

Novel Self‐Assembling Supramolecular Phenanthro[9,10‐a]phenazine Discotic Liquid Crystals: Synthesis, Characterization and Charge Transport Studies

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