A novel strategy for constructing fluorescent liquid crystals with diphenylacrylonitrile groups derivatives based on Thiazolo[5,4-d]thiazole core

Feng, Huiyi; He, Yong; Yang, Wenqing; Wang, Sheng; Feng, Yi‐Si

doi:10.1016/j.molstruc.2022.134582

Cited by 5 publications

(4 citation statements)

References 48 publications

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“…Copyright 2023, Elsevier), d) Chemical structure of compound 11, e) The DSC curves of 11 (MTM-1, 2 and 3) during the second heating and first cooling (scanning rate of 5 °C/min) (Adapted with permission from ref. [36]. Copyright 2023, Elsevier) and f) Fluorescence spectra of 11 (MTM-1, 2 and 3, c = 10 μM, λ ex = 320 nm) in THF solution (Adapted with permission from ref.…”

Section: Liquid Crystalline Multi-chromophoric Systemsmentioning

confidence: 99%

Section: Liquid Crystalline Multi-chromophoric Systemsmentioning

confidence: 99%

“…composed of stilbene nitrile units linked to thiazolo [5,4d]thiazole (TzTz) core (11, Figure 4d) were developed by Feng and coworkers. [36] The influence of electronic effect on mesophase properties was investigated with different substitution, such as À CH 3 (MTM-1), À H (MTM-2) and À F (MTM-3) on stilbene unit (Figure 3). The electron-donating À CH 3 group enhanced the charge transfer due to inter-molecular CÀ H hydrogen bonding and more energy supply at the TzTz core.…”

Section: Liquid Crystalline Multi-chromophoric Systemsmentioning

confidence: 99%

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Self‐Assembly of Discrete Multi‐Chromophoric Systems

Daniel,

Satheesh,

Kartha Kalathil

2024

Chemistry A European J

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Self‐assembly of chromophoric systems is a prerequisite to create well‐ordered, processable nanomaterials with multiple functionalities. In the past two decades, the field of functional organic materials has primarily focused on systems featuring only one type of dye/π‐conjugated unit. Consequently, many reports with mechanistic insights on the self‐assembly of the dyes featuring different molecular packing have been reported. Subsequently, we have witnessed several attempts to organize the multi‐chromophoric systems in solution and solid‐state via different approaches using self‐assembly as a tool. Incorporation of more than one dye is important in creating materials with tuneable optoelectronic properties. Consequently, self‐assembly of more than one chromophoric systems have been investigated to some extent. This review aims to discuss the self‐assembled materials derived from discrete π‐conjugated systems comprising more than one dye units connected through covalent bonding (multi‐chromophoric systems). Molecular design of various multi‐chromophoric systems leading to the formation of crystals, liquid crystals and supramolecular polymers have been correlated with corresponding properties. We envisage that classification of self‐assembled multi‐chromophoric systems, with a note on tuneable optoelectronic properties, can provide a deeper understanding on the molecular design strategies, which is important in the fabrication of functional organic materials with optimum performances.

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Section: Liquid Crystalline Multi-chromophoric Systemsmentioning

confidence: 99%

Section: Liquid Crystalline Multi-chromophoric Systemsmentioning

confidence: 99%

Section: Liquid Crystalline Multi-chromophoric Systemsmentioning

confidence: 99%

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Self‐Assembly of Discrete Multi‐Chromophoric Systems

Daniel,

Satheesh,

Kartha Kalathil

2024

Chemistry A European J

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“…This new property paved the way to the successful development of organic light-emitting diodes (OLEDs), optical sensing materials, photovoltaic cells and, more recently, circularly polarized luminescence (CPL) materials. [1][2][3][4][5][6] However, all these advances can be impaired if a key parameter is not considered on luminescent dyes' applications, i.e. high photoluminescence quantum yields.…”

Section: Introductionmentioning

confidence: 99%

Harnessing Liquid Crystal Attributes of Near-Unit Photoluminescent Benzothioxanthene Photosensitizers: Photophysical Profiling in Solution, Solid State, and Polymer Matrix Embedding

Duarte,

Morice,

Ghanem

et al. 2024

Preprint

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Liquid crystals (LCs) have garnered significant attention for their unique optical and electrical properties, making them promising candidates in various technological applications such as smart displays, sensors, telecommunications, biomedicals or wearable electronics. In this study, we explore the potential of several highly emissive benzothioxanthene imide (BTI) derivatives as LC materials with a focus on their robustness and temperature-stable emission behavior. By tailoring the molecular structure of BTIs, we have accomplished exceptional emissive properties while maintaining the inherent advantages of LCs, such as their self-organizing ability and responsive nature. We describe the formation of enantiotropic liquid crystals whose mesomorphic properties dependent on the nature, length, and position of the side chain. Moreover, we have investigated the thermal stability of their emission spectra over a wide range of temperature, highlighting their potential use in demanding conditions where precise optical performances are critical. Our findings underscore the importance of molecular design in achieving highly emissive LC materials with enhanced robustness and temperature stability, opening new avenues for the use of BTI derivatives.

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Shedding Light on Highly Emissive 1,4‐Dihydropyrrolo[3,2‐b]pyrrole Derivatives: Synthesis and Aggregate‐Dependent Emission

Abatti,

Decarli,

Gogoc

et al. 2023

ChemPlusChem

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Three tetraaryl‐1,4‐dihydropyrrolo[3,2‐b]pyrrole derivatives containing different number of long alkoxy chains (2, 4 and 6) were synthesized, characterized and applied in Organic Light Emitting Diodes (OLEDs). The compounds showed good emission properties with Photoluminescence Quantum Yields (PLQYs) higher than 80% in solution and 50% in solid state (thin film). The solvatochromism results revealed a pronounced vibronic emission in methylcyclohexane and toluene, characterized by two distinct sharp emission peaks and a small redshift in the following order: methylcyclohexane > toluene > dichloromethane > tetrahydrofuran > acetonitrile. Also, the compounds formed aggregates with redshifted emission, which can be attributed to excimer formation. This phenomenon was observed in solutions containing 90% water and with the concentration variation in methylcyclohexane (MCH). Compounds with a greater number of peripheral chains showed the capacity to keep hexagonal columnar organization in films after fast cooling from liquid state. OLEDs fabricated with these compounds showed turn‐on voltages lower than 4.0 V, with luminance higher than 1400 cd.m2, electroluminescence spectra with Full Width at Half Maximum lower than 70 nm and maximum External Quantum Efficiency between 7.2% and 4.3%. Overall, this shows that the 1,4‐dihydropyrrolo[3,2‐b]pyrrole moiety is promising for applications where luminescence is paramount, as in organic light‐emitting devices

show abstract

A novel strategy for constructing fluorescent liquid crystals with diphenylacrylonitrile groups derivatives based on Thiazolo[5,4-d]thiazole core

Cited by 5 publications

References 48 publications

Self‐Assembly of Discrete Multi‐Chromophoric Systems

Self‐Assembly of Discrete Multi‐Chromophoric Systems

Harnessing Liquid Crystal Attributes of Near-Unit Photoluminescent Benzothioxanthene Photosensitizers: Photophysical Profiling in Solution, Solid State, and Polymer Matrix Embedding

Shedding Light on Highly Emissive 1,4‐Dihydropyrrolo[3,2‐b]pyrrole Derivatives: Synthesis and Aggregate‐Dependent Emission

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