Precise synthesis of multilevel branched organic microwires for optical signal processing in the near infrared region

Yan, Changcun; Wu, Junjie; Yang, Wan‐Ying; Chen, Song; Lv, Qiang; Wang, Xuedong; Liao, Liang‐Sheng

doi:10.1007/s40843-021-1800-0

Cited by 10 publications

(6 citation statements)

References 66 publications

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“…In particular, low-dimensional near-infrared (NIR)-emitting materials have attracted more attention due to fundamental physical investigations and advanced device applications in fields of optical communications, , night vision, − biological imaging, , etc. To date, particular effort has been devoted to the development of NIR photonics in the fields of low-dimensional materials, including films, − quantum dots, − and micro/nanocrystals. − Notably, low-dimensional sheet-like crystals play an important role in lasers, − light-emitting devices, , photoelectric conversion, − and optical waveguides. − Sheet-like crystals with NIR luminescence have excellent two-dimensional (2D) optical conduction properties with an ultralow loss coefficient and active optical waveguide properties, which have indispensable practical significance for the optoelectronic integrated application of NIR emission …”

mentioning

confidence: 99%

Two-Dimensional Optical Waveguides at Telecom Wavelengths Based on Organic Single-Crystal Microsheets of a Charge Transfer Complex

Liu

et al. 2023

J. Phys. Chem. Lett.

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Organic charge transfer (CT) cocrystals open a new door for the exploitation of low-dimensional near-infrared (NIR) emitters by a convenient self-assembly approach. However, research about the fabrication of sheet-like NIR-emitting microstructures that are significant for structural construction and integrated application is limited by the unidirectional molecular packing mode. Herein, via regulation of the biaxial intermolecular CT interaction, single-crystalline microsheets with remarkable NIR emission from 720 to 960 nm were synthesized via the solution self-assembly process of dithieno[3,2-b:2′,3′-d]thiophene and 7,7,8,8-tetracyanoquinodimethane. The expected sheet-like structure is conducive to achieving a two-dimensional (2D) optical waveguide with an ultralow optical loss rate of 0.250 dB/μm at 860 nm. More significantly, these asprepared organic microsheets with tunable thicknesses (h) from 100 to 1100 nm exhibit thickness-dependent NIR optical transportation performance. These findings could pave the way to a new class of low-dimensional NIR emitters for 2D photonics at telecom wavelengths.

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confidence: 99%

Two-Dimensional Optical Waveguides at Telecom Wavelengths Based on Organic Single-Crystal Microsheets of a Charge Transfer Complex

Liu

et al. 2023

J. Phys. Chem. Lett.

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“…In 2022, Liao et al successfully prepared the first multilevel dendritic organic microwire crystals based on the organic NIR-emitting material DHNBP (compound 79) using a simple solution self-assembly method, which allowed the optical waveguide signal to be redshifted toward the communication window. 179 The molecular structure and the schematic diagram of multilevel dendritic organic micrometer wire crystals are shown in Fig. 10(d).…”

Section: Nir Organic Optical Waveguidementioning

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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“…The maximal absorption wavelengths of HPMP and HPPP are approximately 440 nm, and the maximal absorption wavelength of HPJP is 475 nm, indicating stronger electronic coupling between the donor and acceptor of HPJP in the ground state. All newly designed molecules show redshifted absorption peaks, mainly because the expanded conjugated systems can effectively lower the highest occupied molecular orbital-lowest unoccupied molecular orbital (HOMO-LUMO) energy gap 45,46 . Compared with DHN-DMP and DHN-DPP, DHN-DJP also showed stronger electronic coupling between the donor and acceptor in the ground state for a 35-nm redshifted absorption (535 nm for DHN-DJP and 500 nm for DHN-DMP and DHN-DPP).…”

Section: Photophysical Propertiesmentioning

confidence: 99%

Deep-red and near-infrared organic lasers based on centrosymmetric molecules with excited-state intramolecular double proton transfer activity

Yan¹,

Che²,

Yang³

et al. 2023

OEA

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Organic lasers that emit light in the deep-red and near-infrared (NIR) region are of essential importance in laser communication, night vision, bioimaging, and information-secured displays but are still challenging because of the lack of proper gain materials. Herein, a new molecular design strategy that operates by merging two excited-state intramolecular proton transfer-active molecules into one excited-state double proton transfer (ESDPT)-active molecule was demonstrated. Based on this new strategy, three new materials were designed and synthesized with two groups of intramolecular resonance-assisted hydrogen bonds, in which the ESDPT process was proven to proceed smoothly based on theoretical calculations and experimental results of steady-state and transient spectra. Benefiting from the effective six-level system constructed by the ESDPT process, all newly designed materials showed low threshold laser emissions at approximately 720 nm when doped in PS microspheres, which in turn proved the existence of the second proton transfer process. More importantly, our well-developed NIR organic lasers showed high laser stability, which can maintain high laser intensity after 12000 pulse lasing, which is essential in practical applications. This work provides a simple and effective method for the development of NIR organic gain materials and demonstrates the ESDPT mechanism for NIR lasing.

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Precise synthesis of multilevel branched organic microwires for optical signal processing in the near infrared region

Cited by 10 publications

References 66 publications

Two-Dimensional Optical Waveguides at Telecom Wavelengths Based on Organic Single-Crystal Microsheets of a Charge Transfer Complex

Two-Dimensional Optical Waveguides at Telecom Wavelengths Based on Organic Single-Crystal Microsheets of a Charge Transfer Complex

Organic near-infrared optoelectronic materials and devices: an overview

Deep-red and near-infrared organic lasers based on centrosymmetric molecules with excited-state intramolecular double proton transfer activity

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