Deep‐Red‐Emissive Flexible Optical Waveguide with High Elastic Performance Based on an Organic Crystal

Xu, Yuanli; Liu, Bin; Pan, Xiuhong; Zhang, Hongyu

doi:10.1002/cptc.202200038

Cited by 5 publications

(9 citation statements)

References 51 publications

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“…Zhang’s group has explored the development of a series of flexible active optical waveguide materials with red/deep-red emission. These materials are based on small organic molecules with long conjugated chains, such as Schiff bases. − These waveguiding materials display low OLCs ranging from 0.10 to 0.35 dB mm –1 within the wavelength range from 620 to 675 nm. This advancement in flexible optical waveguiding materials expands further their applicability to the red spectral region.…”

Section: Mechanically Flexible Optical Waveguidesmentioning

confidence: 99%

“…By modulating various interactions such as π···π interactions, C–H···π interactions, hydrogen-bonding interactions, and halogen-bonding interactions, a plethora of mechanically flexible organic single crystals have been prepared. − Within this context, the combination of the flexibility of organic molecular crystals and their unique optoelectronic functionality opens up new avenues to be explored in the field of organic crystalline materials (Figure ). − …”

Section: Mechanically Flexible Optical Waveguidesmentioning

confidence: 99%

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Flexible Organic Crystals for Dynamic Optical Transmission

Lan,

Li,

Naumov

et al. 2023

Chem. Mater.

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In recent years, studies of organic optical waveguide materials have emerged as a cutting-edge research area driven by their inherent advantages, such as low optical losses, structural versatility, and attractive optical properties. Notably, organic crystals exhibiting a high refractive index and optical transparency have gained attention as prospective materials for next-generation optoelectronic devices. However, unlike viscoelastic polymers with flexible chains, organic single crystals composed of densely arranged anisotropic organic small molecules have not been considered viable as functional materials due to their mechanical rigidity and fragility. Recently, the solid-state research community has witnessed a breakthrough in developing flexible organic crystalline materials, bringing a unique class of soft yet ordered engineering materials with plasticity or elasticity poised to revolutionize the concept of organic crystalline electronics. Recent works have demonstrated the feasibility of flexible organic crystals in optical transmission and have developed a variety of elastic organic crystals with different structures and functions, opening up opportunities for the design of flexible single-crystalline electronic devices. The first elastic organic crystalline optical waveguide has been prepared by building on the elasticity and luminescent properties of such organic crystals. Subsequently, various flexible organic crystals have been discovered and reported, enabling the realization of self-doped crystal waveguides, three-dimensional optical waveguides, phosphorescent waveguides, polarization rotators, and other optical elements. Through molecular design strategies, such as the construction of π-conjugated systems and introduction of heteroatoms, as well as by employing the principles of crystal engineering, researchers have developed flexible crystalline waveguiding materials with extraordinary mechanical properties, including elastic or thermoplastic bending and stimulus-specific deformation. The applications of these optically functional flexible organic crystals have been extended to low/high-temperature environments. Furthermore, combining flexible organic crystals with inorganic/polymeric materials by self-assembly techniques has led to the development of new hybrid functional materials such as solvent-resistant-coated crystals, humidity- and temperature-responsive actuators, and magnetically controllable hybrid materials. These advancements have paved the way for novel applications of organic crystals in flexible devices, such as sensors, soft robots, and optoelectronic devices.

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Section: Mechanically Flexible Optical Waveguidesmentioning

confidence: 99%

Section: Mechanically Flexible Optical Waveguidesmentioning

confidence: 99%

Flexible Organic Crystals for Dynamic Optical Transmission

Lan,

Li,

Naumov

et al. 2023

Chem. Mater.

Self Cite

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“…25 Moreover, the three communication windows with low loss in optical fiber communication are 850 nm (first window), 1310 nm (second window), and 1550 nm (third window), which are all located in the NIR region, thus making organic NIR-emitting materials have great potential for applications in optical waveguides. [26][27][28] According to different emitting mechanisms, NIR-emitting materials can be divided into fluorescence materials and phosphorescence materials. As shown in Fig.…”

Section: Introductionmentioning

confidence: 99%

Organic near-infrared optoelectronic materials and devices: an overview

Che,

Yan,

Wang

et al. 2024

Adv. Photon.

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.Near-infrared (NIR) light has shown great potential for military and civilian applications owing to its advantages in the composition of sunlight, invisibility to human eyes, deeper penetration into biological tissues, and low optical loss in optical fibers. Therefore, organic optoelectronic materials that can absorb or emit NIR light have aroused great scientific interest in basic science and practical applications. Based on these NIR organic optoelectronic materials, NIR optoelectronic devices have been greatly improved in performance and application. In this review, the representative NIR organic optoelectronic materials used in organic solar cells, organic photodetectors, organic light-emitting diodes, organic lasers, and organic optical waveguide devices are briefly introduced, and the potential applications of each kind of device are briefly summarized. Finally, we summarize and take up the development of NIR organic optoelectronic materials and devices.

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“…Owing to their large chemical versatility, the waveguide geometry and transmission properties can be tailored through chemical functionalization of the molecular building blocks. For these reasons, in recent years there has been a large increase in the use of organic crystals as optical waveguides [ 10 , 11 , 12 , 13 , 14 , 15 , 16 ].…”

Section: Introductionmentioning

confidence: 99%

Donor–Acceptor–Donor 1H-Benzo[d]imidazole Derivatives as Optical Waveguides

et al. 2023

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A new series of donor–acceptor–donor (D–A–D) structures derived from arylethynyl 1H-benzo[d]imidazole was synthesized and processed into single crystals with the goal of testing such crystals’ ability to act as optical waveguides. Some crystals displayed luminescence in the 550–600 nm range and optical waveguiding behavior with optical loss coefficients around 10−2 dB/μm, which indicated a notable light transport. The crystalline structure, confirmed by X-ray diffraction, contains internal channels that are important for light propagation, as we previously reported. The combination of a 1D assembly, a single crystal structure, and notable light emission properties with low losses from self-absorption made 1H-benzo[d]imidazole derivatives appealing compounds for optical waveguide applications.

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Deep‐Red‐Emissive Flexible Optical Waveguide with High Elastic Performance Based on an Organic Crystal

Cited by 5 publications

References 51 publications

Flexible Organic Crystals for Dynamic Optical Transmission

Flexible Organic Crystals for Dynamic Optical Transmission

Organic near-infrared optoelectronic materials and devices: an overview

Donor–Acceptor–Donor 1H-Benzo[d]imidazole Derivatives as Optical Waveguides

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