ORGANIC ELECTRONICS
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2022
·
IF 3.868
Songman Ju,Chaomin Mao,Yang Liu,Yangbin Zhu,Zhongwei Xu,Kaiyu Yang,Tailiang Guo,Hailong Hu,Fushan Li
Perovskite quantum dots light-emitting diodes (PQLEDs), due to the advantages of high luminous efficiency, high color purity, adjustable spectral range, etc., has an excellent prospect in the next generation of high-definition displays. As an indispensable part of displays, blue PQLEDs are usually achieved by mixing halogen, which, however, will lead to halogen ion migration and phase separation of perovskite material at high temperature and bias pressure, thus make the electroluminescent spectrum redshift. In this manuscript, we propose a strategy to inhibit phase separation of blue perovskite quantum dots (PQDs) by introducing alkali metal , and obtain stable perovskite quantum dot light-emitting diodes. The PQLEDs based on this strategy show an external quantum efficiency (EQE) of 1.87% and a brightness of 3757 cd m −2 , and can still guarantee stable electroluminescence (EL) spectra at a bias of up to 14 V. The work is beneficial for probing into the mechanism of suppressing the phase separation of mixed halogen blue PQDs and offer a promising strategy to enhance the color stability of blue PQLEDs.
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Advanced Optical Materials
·
2022
·Vol. 11
·期 4
·2202058
·
IF 10.05
Chaomin Mao,Songman Ju,Jinping Zheng,Yueting Zheng,Zhongwei Xu,Lihua Lin,Hailong Hu,Kaiyu Yang,Tailiang Guo,Fushan Li
Perovskite quantum dots (PQDs) have been widely used to realize light-emitting diodes (LEDs) with high color purity, efficiency, and wide color gamut. Due to the demand for huge amount of display information, development on high-resolution PQD LEDs (PQLEDs) with massive pixel density are highly desired. Herein, high-resolution PQLEDs are fabricated by using nanoimprint technique. By preparing a honeycomb-insulating polymer polymethyl methacrylate (PMMA) film, the high-resolution pixelated quantum dot emissive layer is formed. In addition, the leakage current of the device is significantly reduced because the direct contact between electron transport layer and hole transport layer is avoided. The PQLEDs based on nanoimprint technology show a resolution of 9072 pixels per inch (PPI), and a maximum external quantum efficiency (EQE) and brightness of 7.81% and 146 400 cd m −2 , respectively. The results demonstrate that high-resolution PQLEDs can be realized by using nanoimprint technology, holding great commercial potential for next-generation near-eye displays.
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ADVANCED MATERIALS
·
2023
·Vol. 35
·期 16
·2211004
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IF 29.4
Benbing Shi,Xiao Pang,Bohui Lyu,Hong Wu,Jianliang Shen,Jingyuan Guan,Xiaoyao Wang,Chunyang Fan,Li Cao,Tianhao Zhu,Yan Kong,Yawei Liu,Zhongyi Jiang
Side-chain engineering of covalent organic frameworks as advanced ion conductors is a critical issue to be explored. Herein, ionic covalent organic framework membranes (iCOFMs) with spacer-engineered ionic channel are de novo designed and prepared. The ionic channels are decorated with side chains comprising spacers having different carbon chain lengths and the –SO 3 H groups at the end. Attributed to the synergistic contribution from the spacers and the –SO 3 H groups, the iCOFM with moderate-length spacer exhibit the highest through-plane proton conductivity of 889 mS cm -1 at 90 °C.
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高影响因子
Light-Science & Applications
·
2022
·Vol. 11
·期 1
·1-9
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IF 20.257
Ju Songman,Zhu Yangbin,Hu Hailong,Liu Yang,Xu Zhongwei,Zheng Jinping,Mao Chaomin,Yu Yongshen,Yang Kaiyu,Lin Lihua,Guo Tailiang,Li Fushan
Interactive display devices integrating multiple functions have become a development trend of display technology. The excellent luminescence properties of perovskite quantum dots (PQDs) make it an ideal luminescent material for the next generation of wide-color gamut displays. Here we design and fabricate dual-function light-sensing/displaying light-emitting devices based on PQDs. The devices can display information as an output port, and simultaneously sense outside light signals as an input port and modulate the display information in a non-contact mode. The dual functions were attributed to the device designs: (1) the hole transport layer in the devices also acts as the light-sensing layer to absorb outside light signals; (2) the introduced hole trapping layer interface can trap holes originating from the light-sensing layer, and thus tune the charge transport properties and the light-emitting intensities. The sensing and display behavior of the device can be further modulated by light signals with different time and space information. This fusion of sensing and display functions has broad prospects in non-contact interactive screens and communication ports.
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Biomaterials Science
·
2023
·
IF 6.6
Siyi Li,Qinglin Wang,Yingying Ren,Pengfei Zhong,Pengtao Bao,Shanyue Guan,Xiaochen Qiu,Xiaozhong Qu
The development of cancer treatment is of great importance especially in the early stage. In this work, we synthesized pH-sensitive amphiphilic ruthenium complex containing two alkyl chains and two PEG chains which was utilized as oxygen sensitive fluorescent probe for co-assembly with lipids to harvest a liposomal delivery system (RuPC) for the encapsulation of a photothermal agent indocyanine green (ICG). The resultant ICG encapsulated liposome (RuPC@ICG) enabled to deliver ICG into cells via membrane fusion pathway by which the ruthenium complex was localized in the cell membrane for better detecting the extracellular oxygen concentration. Such characteristic endowed the ratiometric imaging feature to distinguish tumour location from normal tissues at just 3 days after cancer cells were implanted by monitoring the hypoxia condition and tracing the metabolism. Moreover, the pH sensitivity of the liposomes favoured the cell uptake, and improved the anti-tumour efficiency of the formulation in vivo under NIR irradiation. Should liposomal systems have less safety issue, our work not only provided a facile way for the construction of theragnostics by combining phototherapy with photoluminescent imaging, but hopefully paving the way for the clinical translation from bench to bedside.
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JOURNAL OF ELECTRONIC MATERIALS
·
2023
·Vol. 52
·期 11
·7475-7483
·
IF 2.1
Sun Baorui,Zhang Minghui,Li Junjie,Li Zhe,Wen Mingli,Liu Zhi-Quan
Ag sintering technology for die-attach application in power semiconductors has garnered significant attention in recent years due to its excellent high-temperature service reliability. In this study, a highly reliable bonding joint was achieved using a specific Ag paste, resulting in shear strength of 37.63 MPa after pressureless bonding at 250°C for 10 min. However, a significant reduction in bonding strength was observed when using another set of Ag paste with better sintering performance. To investigate this anomalous phenomenon, we have performed a series of characterizations and proposed a corresponding bonding formation mechanism. The conclusions and inferences drawn from this study offer valuable theoretical support for the further application of Ag sintering, thereby promoting the advancement of this technology. Graphical Abstract
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FOOD CHEMISTRY
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2023
·
IF 8.8
Jia Ma,Jiang-Hua Zhang,Hua-Wei Zhang,Qian-Qian Du,Zi-Xuan Li,Zhi-Fei Yang,Sha-Sha Yang,Da-Yong Zhou
It is of great importance to develop a most efficient, recyclable, and ecofriendly process to produce novel structured phospholipid emulsifiers. Herein, innovative medium-chain structured phospholipid (MCSPL) emulsifiers were synthesized through transesterification of soybean lecithins with medium-chain fatty acids (MCFAs) promoted by Zn- or Al-incorporated Fe 3 O 4 @SiO 2 , denoted by Fe 3 O 4 @SiO 2 /M (M = Zn or Al). Resultingly, Fe 3 O 4 @SiO 2 /M (M = Zn or Al) exhibited the most superior reactivity with 97.1% or 88.7% MCFA incorporation to other benchmark catalysts and also had excellent magnetic separability and recyclability. Noticeably, targeted MCSPLs possessed almost more superior emulsifying properties to other phospholipid emulsifiers, and had potential for use as oil–in–water emulsifiers. Conclusively, the present findings demonstrate that transesterification promoted by Fe 3 O 4 @SiO 2 /M (M = Zn or Al) can be a promising approach for green, economic, and highly effective synthesis of novel dual-function phospholipid emulsifiers with bioactive and emulsifying properties in food, pharmaceutical, and cosmetic industries.
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APPLIED CATALYSIS B-ENVIRONMENTAL
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2023
·
IF 22.1
Yan-Fei Mu,Jin-Shuang Zhao,Li-Yuan Wu,Ke-Ying Tao,Zhao-Lei Liu,Fu-Quan Bai,Di-Chang Zhong,Min Zhang,Tong-Bu Lu
Strong photoresponse, efficient charge separation, and high surface activity are three important requirements for an ideal photocatalyst, while few photocatalysts can fully meet these requirements. Herein, we report such a photocatalyst based on lead-free halide perovskite hollow nanospheres (H-Cs 3 Sb 2 Br 9 ) by a facile antisolvent-assisted method. The hollow structure of H-Cs 3 Sb 2 Br 9 improves the light-harvesting performance; The formation of surface shallow trap states contributes to promoting the excited-carrier separation; The ligand-free termination surface of H-Cs 3 Sb 2 Br 9 facilitates the exposure of Br vacancies and active sites, thus strengthens the CO 2 adsorption and accelerates surface reactivity dynamics. As a result, with a dinuclear Co(II) complex as the co-catalyst, H-Cs 3 Sb 2 Br 9 exhibits a record-high photocatalytic activity for CO 2 reduction, with a CO yield of 15,010.4 ± 550.4 μmol g −1 after 8 h of illumination under simulated solar light (100 mW cm −2 ). This research presents a new way to develop cost-effective photocatalysts for CO 2 reduction.
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Nanomaterials
·
2023
·Vol. 13
·期 12
·1890
·
IF 5.3
Chun Sun,Hu Zhang,Zhihui Deng,Chao Fan,Xiaohui Liu,Mingming Luo,Yiwei Zhao,Kai Lian
Stimuli-responsive luminescent materials have received great attention for their potential application in anti-counterfeiting and information encryption. Manganese halide hybrids have been considered an efficient stimuli-responsive luminescent material due to their low price and adjustable photoluminescence (PL). However, the photoluminescence quantum yield (PLQY) of PEA2MnBr4is relatively low. Herein, Zn2+- and Pb2+-doped PEA2MnBr4samples are synthesized, and show an intense green emission and orange emission, respectively. After doping with Zn2+, the PLQY of PEA2MnBr4is elevated from 9% to 40%. We have found that green emitting Zn2+-doped PEA2MnBr4could transform to a pink color after being exposed to air for several seconds and the reversible transformation from pink to green was achieved by using heating treatment. Benefiting from this property, an anti-counterfeiting label is fabricated, which exhibits excellent “pink-green-pink” cycle capability. Pb2+-doped PEA2Mn0.88Zn0.12Br4is acquired by cation exchange reaction, which shows intense orange emission with a high QY of 85%. The PL of Pb2+-doped PEA2Mn0.88Zn0.12Br4decreases with increasing temperature. Hence, the encrypted multilayer composite film is fabricated relying on the different thermal responses of Zn2+- and Pb2+-doped PEA2MnBr4, whereby the encrypted information can be read out by thermal treatment.Keywords:anti-counterfeiting;doping;manganese halides;stimuli-responsive;photoluminescence
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JOURNAL OF MEMBRANE SCIENCE
·
2023
·
IF 9.5
Guangzhe Wang,Tao Wu,Junhui Zhao,Benbing Shi,Tianrun Gu,Runnan Zhang,Xiaoyao Wang,Roni Kasher,Yanlei Su,Zhongyi Jiang
Ionic covalent organic frameworks (COFs) hold great promise in regulating the structure of polyamide nanofiltration membranes for divalent ions removal. In this work, we demonstrate cationic COF (cCOF) nanosheets engineered polyamide membrane with excellent divalent cations rejection. cCOF nanosheets as versatile regulator and an interlayer accelerate the self-sealing and self-termination of interfacial polymerization between polyethyleneimine and trimesoyl chloride, endowing membranes with dense network and small thickness. Meanwhile, the quaternary ammonium groups on cCOF nanosheets increase positive charges on membranes. Through synergistic intensification of electrostatic repulsion and size sieving, the resulting cCOF-PA membranes display excellent rejection for divalent cations (MgCl 2 , 99.3%), superior to most reported polyethyleneimine-based polyamide membranes. This work highlights the significance of ionic COF materials in developing positively charged membranes for efficient ionic and molecular separations.
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JOURNAL OF MOLECULAR LIQUIDS
·
2023
·
IF 6
Jiangping Cao,Yifei He,Xiaoshuo Zhang,Lei Shi,Baizhao Zeng,Faqiong Zhao
Deep eutectic solvents (DESs) are new alternative solvents used in sample preparation for dissolution, extraction and preconcentration of analytes. In this work, a tributyl phosphate (TBP)-based hydrophobic deep eutectic solvent was applied in the liquid–liquid microextraction (LLME) of total parabens in beverages. The sample preparation procedure consisted of two main steps: the phase transfer catalyst-assisted alkaline hydrolysis of parabens and the LLME of parabens’ hydrolysate p-hydroxybenzoic acid (PHBA). The hydrolysis procedure was improved efficiently by the addition of phase transfer catalyst and the extractant became greener as the natural lauric acid (LauA) was used as the component of the DES . It was verified that the DES composed of TBP and LauA (3:1, mol/mol) was the most effective option for PHBA extraction. Response surface methodology (RSM) based on Box-Behnken design (BBD) was adopted to optimize the predominant experimental conditions. The proposed method provided satisfactory linearity (R 2 ≥ 0.9991), detection limits (0.02 μmol/L), precisions (RSDs ≤ 4.5%), recoveries (85.2% to 104.6%) and negligible matrix effects, which offered a promising way for screening total parabens in various beverage samples.
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Food Bioscience
·
2023
·
IF 5.2
Kaiyong Yao,Qile Xia,Yan Cao,Bindan Chen,Jie Cai,Chenxing Liu
Yellow wine lees (YWL) are the main byproduct in the yellow wine brewing and can be used as animal feed. The deficiencies in fiber digestibility and amino acid equilibrium of YWL limited its utility value in animal feeding. The nutritional profile of YWL could be moderated after fermentation treatment. We fermented YWL with Candida utilis KF01 and Bacillus subtilis KF02, whose genomes were sequenced. We set three groups in the animal test with 15 Holstein cows : control, YWL, and fermented yellow wine lees (FYWL) group. 206 and 5 amino acid metabolism-related KEGG pathways, as well as 5257 (639 GO and 4618 eggNOG annotations) and 1579 (372 GO and 1207 eggNOG annotations) amino acid metabolism-related gene annotations were found in C. utilis KF01 and B. subtilis KF02. The collected milk samples were analyzed for composition. The contents of mono-unsaturated fatty acid (MUFA, 36.90% relative content), poly-unsaturated fatty acid (PUFA, 5.63% relative content), and essential amino acid (EAA, 2.01%) in the FYWL group milk were significantly (P < 0.05) higher. The content of flavor substances in the FYWL group (146.33 ng/mL) was the highest, followed by the control (89.19 ng/mL) and the YWL group (41.36 ng/mL). The principal component analysis (PCA) result presented the intra-group variations in flavor substances and differences in single substance among all groups. Feeding FYWL had significant effects (P < 0.05) in the Holstein cows on the milk composition.
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危险品化学品经营许可证（带存储）