Highly Fluorescent Semiconducting Two-Dimensional Conjugated Polymer Films Achieved by Side-Chain Engineering Showing Large Exciton Diffusion Length

Wang, Yongshuai; Zhang, Qing; Li, Xiao-Ze; Shu, Zhibin; Zhang, Yihan; Gao, Can; Li, Yang; Líu, Hao; Li, Chenguang; Fang, Hong‐Hua; Sun, Hong‐Bo; Zhang, Xiaotao; Hu, Wenping; Dong, Huanli

doi:10.31635/ccschem.022.202202487

Cited by 9 publications

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“…The tailorable band gaps of 2D polymers (2DPs), mainly originating from their monomer design and polymerization chemistry, offer great freedom in tuning emergent quantum phenomena in organic-inorganic vdW heterojunctions. 21,22,107 In 2020, Balch et al reported the preparation of a 2DP/TMDs heterojunction named TIIP 2DP/MoS 2 heterojunction. 60 Fig.…”

Section: Inorganic Materials Choicesmentioning

confidence: 99%

“…16 In summary, the atomically thin characteristic of the above-mentioned materials endows them intriguing features. 17 In addition, covalent-organic frameworks (COFs), 18 metal-organic frameworks (MOFs), 19 2D conjugated polymers, [20][21][22] and 2D molecular crystals 23,24 are some of the innovative organic 2D materials that are currently being suggested and intensively developed. They possess the unique advantages of intrinsic flexibility, rich sources, scalability, designable functions and large bandgap.…”

Section: Introductionmentioning

confidence: 99%

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Recent progress in emerging two-dimensional organic–inorganic van der Waals heterojunctions

Zhang,

Li,

et al. 2024

Chem. Soc. Rev.

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Section: Inorganic Materials Choicesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Recent progress in emerging two-dimensional organic–inorganic van der Waals heterojunctions

Zhang,

Li,

et al. 2024

Chem. Soc. Rev.

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“…Exciton diffusion length, defined as the distance an exciton can migrate within a material during its lifetime, plays a crucial role in determining the performance of organic optoelectronic devices. , Simultaneously integrating a long exciton diffusion length with high mobility in emissive organic semiconductors is key to reducing nonradiative voltage loss (Δ V nr ) and increasing the power conversion efficiency in OSCs. It is also central to the processes of charge transport, recombination, and exciton diffusion, directly impacting the external quantum efficiency in OLEDs and OLETs. − However, for many organic semiconductors, the exciton diffusion length is typically limited to around 5–20 nm, a constraint that significantly impedes the development and application of these devices .…”

Section: Introductionmentioning

confidence: 99%

Long Exciton Diffusion Length in High Mobility Emissive Organic Semiconductor

Zhang,

Yuan,

Wang

et al. 2024

J. Phys. Chem. C

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Organic semiconductors that possess both long exciton diffusion length and high mobility emissive properties are crucial for the development of high-performance organic optoelectronic devices. However, materials with these combined characteristics are currently rare. Herein, a long exciton diffusion length was obtained in the high mobility emissive organic semiconductor trans-1,2-bis(5-phenyldithieno[2,3-b:3′,2′-d]thiophen-2-yl)ethene (BPTTE). Excellent optoelectronic properties with the maximum carrier mobility of 18.1 cm 2 V −1 s −1 and high photoluminescence quantum yield (PLQY) of 21.4% were obtained for BPTTE single crystals. Notably, an impressive exciton diffusion length reaching up to 114.2 nm was also achieved, demonstrating the effective integration of optoelectrical properties in BPTTE single crystals. This work offers valuable guidance for exploring the multifunctional capabilities of high mobility organic semiconductors, a crucial aspect for enhancing the performance of organic optoelectronic devices.

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Dual‐Stimuli‐Responsive Covalent Organic Framework‐Liquid Crystal Polymer Smart Actuator

Liu,

Li,

Zhao

et al. 2024

Adv Funct Materials

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Covalent organic frameworks (COFs) represent a novel class of crystalline porous polymers that is in the limelight of research on functional materials. Loading COFs into a polymer matrix combines the stimuli‐responsive behavior of COFs and shape integrity and processing easiness of polymers. However, multiple and complex responsiveness can hardly be realized by integrating COFs into an amorphous and inert polymer matrix. Herein, photothermal and solvent‐sensitive porphyrin COF is synthesized and incorporated into another functional liquid crystal polymers (LCPs) matrix, which has uniformly molecular alignment and is capable of performing reversible deformation in response to external stimulus. As a result, the COFs dispersed in LCP can act as photothermal agents and fluorescence motifs, endowing the COF‐doped LCP film with near‐infrared (NIR) light and solvent dual‐responsiveness. Moreover, thanks to the ordered molecular alignment of LCP, such stimulation can trigger multi‐model actuation of the polymer film by adjusting molecular aligning direction, finally, based on the novel multifunctional composite film, a bionic flower capable of reversibly blooming and closing response to NIR light and solvent vapors is prepared.

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Highly Fluorescent Semiconducting Two-Dimensional Conjugated Polymer Films Achieved by Side-Chain Engineering Showing Large Exciton Diffusion Length

Cited by 9 publications

References 0 publications

Recent progress in emerging two-dimensional organic–inorganic van der Waals heterojunctions

Recent progress in emerging two-dimensional organic–inorganic van der Waals heterojunctions

Long Exciton Diffusion Length in High Mobility Emissive Organic Semiconductor

Dual‐Stimuli‐Responsive Covalent Organic Framework‐Liquid Crystal Polymer Smart Actuator

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