Modular high power plant lighting sources based on phosphor–sapphire composites with high thermal conductivity

Zhang, Jiayu; Zou, Xikun; Jin, Lei; Sun, Jiamin; Zhang, Bohua; Li, Wei; Zhang, Haoran; Zheng, Mingtao; Liu, Yingliang; Liu, Xiaotang; Zhang, Xuejie; Lei, Bingfu

doi:10.1039/d2tc03275a

Cited by 9 publications

(10 citation statements)

References 37 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…[63] Meanwhile, Alk-SPU also outperforms the literature-reported covalent adaptable networks (CANs)-based elastomers crosslinked by the dynamic covalent bonds, in terms of the mechanical strength and ductility (Figure S9). [64][65][66][67][68][69][70][71][72][73][74][75][76][77][78] The superhigh mechanical robustness of Alk-SPU is further demonstrated by the fact that a thin-strip sample (0.8 g) can lift a weight of 20.0 kg (25 000 times its own weight, inset of Figure 3d, Movie S1). By contrast, Ar-SPU has a much lower Young's modulus (6.1 MPa) because of the lower density of H-bonded crosslinks, while possessing a similar tensile strength (68.5 MPa) to Alk-SPU.…”

Section: Synthesis and Characterizationmentioning

confidence: 99%

“…Importantly, the dissociation temperature of the Alk-(ASCZ-U) 2 -based NCoN is even higher than or comparable to many CANs crosslinked by different dynamic covalent bonds (e.g., Diels-Alder adducts) (Figure 4c). [72][73][74][75][76][77][80][81][82][83][84] Therefore, the H-bonded crosslinks in the Alk-(ASCZ-U) 2based NCoN display a covalent crosslinking effect.…”

Section: Thermal Stability Of the Spnsmentioning

confidence: 99%

“…g) Characteristic relaxation time (τ*) of the Alk-SPU and Ar-SPU elastomers as a function of temperature. h) Comparison of the characteristic relaxation time (τ*) of the Alk-(ASCZ-U) 2 -based NCoN with various CANs [68][69][70][71][72][83][84][85]. Data in (d,e) presented as mean � SD, n = 5.…”

mentioning

confidence: 99%

“…b) Temperature-dependent FTIR spectra of the Alk-SPU and Ar-SPU elastomers in the C=O stretching vibration region, measured upon heating from 30 °C to 120 °C. c) Comparison of the dissociation temperature of the Alk-(ASCZ-U) 2 -based NCoN, UPy dimer-based SPNs[20,[49][50][51]79] and various dynamic covalent bond-based CANs [72][73][74][75][76][77][80][81][82][83][84]. The dissociation temperatures of the reference networks were either extracted from the literature or determined from the reported DMA data.…”

mentioning

confidence: 99%

See 3 more Smart Citations

Ultrastable, Superrobust, and Recyclable Supramolecular Polymer Networks

Niu,

Li,

Liang

et al. 2024

Angew Chem Int Ed

View full text Add to dashboard Cite

Supramolecular polymer networks (SPNs), crosslinked by noncovalent bonds, have emerged as reorganizable and recyclable polymeric materials with unique functionality. However, poor stability is an imperative challenge faced by SPNs, because SPNs are susceptible to heat, water, and/or solvents due to the dynamic and reversible nature of noncovalent bonds. Herein, the design of a noncovalent cooperative network (NCoN) to simultaneously stabilize and reinforce SPNs is reported, resulting in an ultrastable, superrobust, and recyclable SPN. The NCoN is constructed by multiplying the H‐bonding sites and tuning the conformation/geometry of the H‐bonding segment to optimize the multivalence cooperativity of H‐bonds. The rationally designed H‐bonding segment with high conformational compliance favors the formation of tightly packed H‐bond arrays comprising higher‐density and stronger H‐bonds. Consequently, the H‐bonded crosslinks in the NCoN display a covalent crosslinking effect but retain on‐demand dynamics and reversibility. The resultant ultrastable SPN not only displays remarkable resistance to heat up to 120 °C, water soaking, and a broad spectrum of solvents, but also possesses a superhigh true stress at break (1.1 GPa) and an ultrahigh toughness (406 MJ m‐3). Despite the covalent‐network‐like stability, the SPN is recyclable through activating its reversibility in a high‐polarity solvent heated to a threshold temperature.

show abstract

Section: Synthesis and Characterizationmentioning

confidence: 99%

Section: Thermal Stability Of the Spnsmentioning

confidence: 99%

mentioning

confidence: 99%

mentioning

confidence: 99%

See 2 more Smart Citations

Ultrastable, Superrobust, and Recyclable Supramolecular Polymer Networks

Niu,

Li,

Liang

et al. 2024

Angew Chem Int Ed

View full text Add to dashboard Cite

show abstract

“…The replacement of the aromatic moiety (lignin) with aliphatic chains (suberin) led to a decrease in the content of the aromatic component (lignin) and resulted in lower polymer chain stiffness and higher chain migration rate. [33] This strategy is universal for cellulose-based absorbent films.…”

Section: Manufacture Of Suberin-lignin-cellulose Supramolecular Biopl...mentioning

confidence: 99%

Permanently Mechanically Adjustable Photothermal Catalytic Spontaneous Double Cross‐Linking Network Enables Durable and Stretchable Plant Skin‐Like Materials

Zhai

Zhong

et al. 2023

Adv Funct Materials

View full text Add to dashboard Cite

In cellulose‐based plastics, as a type of thermoplastic and thermosetting materials, the excellent balance of mechanical strength and ductility poses a large challenge. To tackle this problem, a novel approach is devised to introduce reversible non‐covalent ester cross‐linking into dynamic covalent hydrogen‐bonded polymer networks. However, the formation of ester bonds typically requires excess reactants and dehydrating agents, which is energy‐intensive, environmentally harmful, and costly. To address these concerns, inspired by polyester‐rich plant bark, a supramolecular composite material is developed. It can be dissolved and regenerated using a binary solvent system (choline hexanoate/choline chloride‐oxalic acid). In water, this supramolecular composite material underwent self‐healing and ester exchange reactions to form double‐cross‐linked networks, interfaced with photo‐thermal catalysis promoting the reaction due to its high photo‐thermal conversion efficiency (86.7%) and water evaporation rate (1.38 kg m−2 h−1). This enables the rapid and repeatable construction of durable and stretchable biomaterials. The mechanical properties of the supramolecular plastic can be adjusted by solar photo‐thermal conditions of the synthesis environment. These materials exhibit high performance in solar water evaporation and have self‐healing properties and are degradable, recyclable, and capable of eliminating their own adhesions.

show abstract

How to Achieve Excellent Luminescence Properties of Cr Ion‐Doped Near‐Infrared Phosphors

Wei,

Li,

et al. 2023

Advanced Optical Materials

View full text Add to dashboard Cite

Transition metal chromium (Cr) ion‐doped inorganic materials exhibit distinct tunable broadband near‐infrared luminescence, and they have promising applications including nondestructive composition analysis, night vision, biomedicine, plant illumination, and afterglow anticounterfeiting. Currently, the most critical issue is to optimize their full width at half maxima, thermal stability, and internal/external quantum efficiency. This review systematically summarizes strategies to effectively improve the photoluminescence performance of near‐infrared‐emitting materials with transition metal chromium ions. Key examples of the design and preparation of Cr ion‐doped luminescence with different transition modes, a detailed discussion of strategies to effectively improve the photoluminescence properties of near‐infrared luminescent materials, and a summary of generic strategies to help explore novel and efficient Cr‐doped phosphor materials are provided. Next, the latest developments and trends in these Cr ion‐doped phosphor materials are presented for a variety of application scenarios. Finally, future research directions and new challenges faced are also discussed.

show abstract

Modular high power plant lighting sources based on phosphor–sapphire composites with high thermal conductivity

Abstract: It is very crucial to select the appropriate plant lighting sources to supplement light for plants according to their different needs for light during different growth periods. However, the LED-driven...

Cited by 9 publications

References 37 publications

Ultrastable, Superrobust, and Recyclable Supramolecular Polymer Networks

Ultrastable, Superrobust, and Recyclable Supramolecular Polymer Networks

Permanently Mechanically Adjustable Photothermal Catalytic Spontaneous Double Cross‐Linking Network Enables Durable and Stretchable Plant Skin‐Like Materials

How to Achieve Excellent Luminescence Properties of Cr Ion‐Doped Near‐Infrared Phosphors

Contact Info

Product

Resources

About