Journal of Materials Chemistry C
·
2021
·Vol. 9
·期 20
·6498-6506
·
IF 7.393
Sheng Wang,Yuan Chen,Junjie Yao,Guoxiang Zhao,Longzhi Li,Guifu Zou
Two-dimensional (2D) organic–inorganic hybrid perovskites are promising for next-generation optoelectronic materials due to their enhanced stability, controllable quantum well thickness and excellent photoelectric properties. The growth of large lateral size, small thickness and high-quality single crystal films is necessary for the practical application of devices. Herein, we report a gas–liquid interface crystalline route to grow BA2PbBr4 (BA = CH3CH2CH2CH2NH3+) single crystal films and achieve wafer size (38 cm2) and thinness as little as 78 nm (aspect ratio > 105). Moreover, an ultraviolet-photodetector of the single crystal thin film presents a dark current of ∼10−14 A, a detectivity of ∼1012 Jones and fast response time (τrise = 9.7 ms and τdecay = 8.8 ms). Our work provides a way to grow 2D perovskite single crystal films with large size and small thickness, which is significant for the development of perovskite-type high-performance optoelectronic devices.
研究领域:
材料科学
·
光电子学
·
钙钛矿半导体
·
纳米技术
✓ 已验证
DOI
高影响因子
Journal of Coatings Technology and Research
·
2018
·Vol. 16
·期 3
·681-688
·
IF 1.619
Wu Jianbing,Zhang Ruofei,Li Ping,Ma Guozhang,Hou Caiying,Zhang Hui
A series of novel fluorinated polyacrylic acrylate oligomers with different fluorine contents were successfully prepared by acid–epoxy reaction between acrylic acid and a glycidyl methacrylate (GMA)-functional acrylic copolymer, which was presynthesized by traditional free radical polymerization in solvent with ethyl methacrylate, n -butyl acrylate, dodecafluoroheptyl methacrylate, and GMA. The UV-curable coatings were prepared with various amounts of the obtained fluorinated polyacrylic acrylate oligomer. The influences of fluorine content on the properties of UV-curable films were investigated by the tests of hydrophobicity, oleophobicity, thermal stability, water absorption, hardness, and chemical resistance. The results showed that the water contact angle of cured films increased from 78.5° to 104.5°, n -hexadecane contact angles increased from 12.3° to 43.4°, the water absorption decreased from 1.27% to 0.63%, while the fluorine content of the cured films increased from 0 to 5.7 wt%. In addition, thermal stability and chemical resistance of the curable films containing fluorinated oligomer were also clearly improved.
研究领域:
高分子化学
·
材料科学
·
表面工程
·
涂料技术
·
功能材料
✓ 已验证
DOI
高影响因子
JOURNAL OF WUHAN UNIVERSITY OF TECHNOLOGY-MATERIALS SCIENCE EDITION
·
2026
·Vol. 41
·期 1
·268-274
·
IF 1.1
Mi Rongxi,Wang Wanqiong,Wang Fuzhi,Chen Xiaolong,Li Weiye,Huang Jinzheng,Wang Xiang,Peng Shouhai
In ultraviolet cured-in-place-pipe (UV-CIPP) pipeline rehabilitation, resin performance critically determines repair effectiveness. Current UV-curable resins exhibit high volatile organic compound (VOC) emissions and inadequate post-cure toughness, which compromise fatigue resistance during service. To address these issues, we synthesized hydroxyl-terminated polyurethane acrylate prepolymers using diphenylmethane diisocyanate (MDI), polypropylene glycol (PPG), and hydroxyethyl methacrylate (HEMA). Fourier transform infrared spectroscopy (FTIR) confirmed successful prepolymer synthesis. We developed UV-curable resins by incorporating various crosslinking monomers and optimized the formulations through mechanical property analysis. Testing revealed that the polyurethane–acrylic UV-cured resin system combines polyurethane’s mechanical excellence with acrylics’ high UV-curing activity. The PPG200/MDI/HEMA formulation achieved superior performance, with a tensile strength of 55.31 MPa, an impact toughness of 22.7 kJ/m 2 , and a heat deflection temperature (HDT) of 132 °C. The optimized system eliminates volatile components while maintaining high reactivity, addressing critical limitations in trenchless pipeline rehabilitation. The improved mechanical properties meet the operational demands of underground pipes, suggesting practical applicability in trenchless pipeline repair.
✓ 已验证
产品关联
DOI
高影响因子
Polymers
·
2026
·Vol. 18
·期 14
·1778
·
IF 5.8
Hanyang Zhao,Qingjun Jin,Hongwei Zhao,Yunkai Yang,Xiang Cheng,Xiujuan Ren,Hongxing Shi
To elucidate the formation of crosslinked products and their influence on material degradation, thermoplastic polyurethane (TPU) films were subjected to accelerated UV aging for various durations. Post-aging, the samples underwent Soxhlet extraction with tetrahydrofuran (THF), yielding an insoluble fraction—operationally defined as the crosslinked product—and a soluble uncrosslinked fraction. The mechanical properties, molecular weight distribution, swelling behavior, thermal properties, and chemical structure were analyzed. As UV aging progressed, both tensile strength and elongation at break deteriorated markedly. Concurrently, GPC analysis revealed a continuous decrease in molecular weight and a broadening of the molecular weight distribution, confirming that chain scission was the dominant degradation pathway. An insoluble network-like residue, defined as the crosslinked product, first appeared after 12 h of aging, with its content increasing to 22.9% after 300 h. Swelling tests showed that the crosslinked product had a high gel fraction, and its swelling ratio decreased from 196.8% to 157.4%, indicating the formation of a stable and increasingly dense network. DSC and TG results revealed restricted segmental motion, altered thermal transition behavior, and enhanced char-forming ability. The glass transition temperature of the crosslinked product exceeded that of the pristine TPU film. FTIR analysis showed variations in the -NH2, C=O, C-O, and C-O-C bands, confirming structural evolution within both hard and soft segments. In summary, UV aging of TPU involves a complex interplay among chain scission, degradation of soft segments, rearrangement of hard segments, evolution of hydrogen bonds, and radical-induced crosslinking. Crucially, the crosslinked network formed during aging plays a pivotal role in determining the macroscopic structural, thermal, and mechanical properties of the polymer.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ACS Applied Materials & Interfaces
·
2026
·
IF 7.8
Junli Liu,Heng Dai,Yuan Xue,Xinran Wang,Zhichao Liu,Ziyi Zhang,Anxi Zhu,Yajun Zeng,Bitao Liu,Xuhui Xu
Visualizing concealed optical information by using optical materials enables the identification of hidden threats and early risk warnings. However, current approaches to multimode optical detection using fluorescent materials often employ composite luminescence from multiple rare-earth ions, significantly limiting their application. Here, Mn2+ ions are introduced into LiAlO2 and ingeniously utilize multisite occupation to achieve visual detection of both UV and X-ray radiation. Compared to the yellow photoluminescence (PL) and green long-persistent luminescence (LPL) of LiAlO2:Mn2+, the LPL following X-ray irradiation exhibits a similar yellow emission. However, controlling temperature changes reveals a remarkable yellow-to-green color shift in the high-temperature LPL following X-ray irradiation at temperatures above 398 K. The integration of PL with LPL establishes a novel technical paradigm for designing multimode optical visualization detection materials.
✓ 已验证
DOI
PubMed
高影响因子
SENSORS AND ACTUATORS A-PHYSICAL
·
2026
·
IF 5.1
Hao Cao,Bin Wu,Xiangfu Wang
Single CNT-LCE strip realizes multiple Boolean functions via patterned contacts. • Fully soft 1-bit full adder experimentally validated for all eight inputs. • Layout reduces physical units for full adder from 18 to 8 (∼56% reduction). • CNT photothermal actuation yields fast, repeatable bending and reliable contacts. • Scaling to 7 bits shows unit-count savings approaching two orders of magnitude. Light-responsive soft materials have intrinsic advantages for remote actuation and programmable control, therefore widely used in intelligent soft systems. However, existing logic units that rely on light-induced bending still face limits in unit size, freedom of interconnection, and direct realization of complex logic. Here, we propose a liquid crystal elastomer (LCE) logic unit based on local UV-curing to form logic gates by controlled light-induced bending. By designing the geometry of the contact paths between the material and the circuit, a single-material unit can realize OR, AND, XOR, and XNOR functions under different contact configurations. Furthermore, a full adder constructed with this method reduces the number of logic gates by 66.7% and 55.56% compared with gate counts optimized by SSoP and Quine–McCluskey SoP (QMSoP), respectively. This method provides a scalable pathway for realizing optical logic circuits across different scales and physical platforms, making it suitable for applications such as soft robotics and self-deploying structures. Download: Download high-res image (101KB) Download: Download full-size image
✓ 已验证
DOI
高影响因子
CRYSTAL GROWTH & DESIGN
·
2026
·
IF 3.6
Yanyan Peng,Haoran Tu,Hepeng Zhao,Mingyang Li,Man Zhao
Perovskite materials have been widely developed for use in photodetectors due to their unique advantages, but most perovskites contain environmentally harmful lead. Herein, spin-coating is employed to fabricate nontoxic Cu-based perovskite films. By constructing a CsCu2I3 and ZnO heterojunction and incorporating a PEDOT:PSS hole transport layer, the ZnO/PEDOT:PSS/CsCu2I3 UV photodetector demonstrates a significantly enhanced spectral range and improved optoelectronic performance compared to a CsCu2I3 photodetector. Specifically, the photocurrent of ZnO/PEDOT:PSS/CsCu2I3 is enhanced by 3 orders of magnitude, reaching 1.43 × 10–4 A, and the responsivity is improved 57-fold to 0.67 A/W. This achievement provides an effective route for fabricating highly responsive Cu-based perovskite photodetectors.
✓ 已验证
DOI
高影响因子
PROGRESS IN ORGANIC COATINGS
·
2026
·
IF 7.9
Yifan Liu,Zhen Chen,Xinyang Zhao,Jun Nie,Yingying Zhao,Xiaoqun Zhu
Traditional solvent-based methods for polyurethane preparation suffer from large VOCs emissions, solvent residue, high energy consumption and poor safety. In contrast, silicone modification can effectively improve the hydrophobicity and chemical resistance of polyurethane. In this study, solvent-free reaction was adopted to synthesize polyurethane, with polytetramethylene ether glycol and isophorone diisocyanate as raw materials, single-terminal monohydroxy polysiloxane, double-terminal monohydroxy polysiloxane and single-terminal dihydroxy polysiloxane as functional monomers, and hydroxyethyl acrylate as the capping monomer. After the addition of a photoinitiator, high-performance hydrophobic polyurethane coatings were fabricated upon 365 nm LED-UV curing. The modified polyurethane exhibits a reduced viscosity (decreased by 20%). The cured coatings possess improved mechanical properties (increased by 20–60%), excellent hydrophobicity (water contact angle of 111.33°), favorable water resistance (water absorption of 1.51%), outstanding abrasion resistance (wear index reduced by 10%) and superior chemical resistance. Owing to the comprehensive and outstanding performances, the prepared polyurethane can be used as a resin to develop hydrophobic coatings through formula adjustment.
✓ 已验证
DOI
高影响因子
ChemPhysMater
·
2026
·
IF 5.3
Tao Zhang,Guishan Tu,Junyu Chen,Jiang Cheng,Lu Li,Guiliang Peng,Wenjing Yang,Jiongyu Hu,Shenghao Wang
The detection of hydrocortisone (cortisol, HC) at physiological concentrations ranging from nanomolar to picomolar levels presents significant technical challenges. Although UV spectroscopy offers rapid and economic analysis, existing detectors lack the necessary sensitivity and exhibit excessive noise for reliable low-concentration measurements. This study introduces an advanced UV photodetector employing a novel vertical architecture of ITO/TiO 2 /Bi 2 O 3 /NiO/AgNWs, enhanced with a pyrolytic hafnium acetylacetonate protective (PHAA) layer. The developed device demonstrates exceptional performance metrics including a detectivity surpassing 1.1×10 11 Jones, an ultralow detection threshold below 1 nW cm −2 , and rapid response times between 9–12 ms. Remarkably, the unencapsulated device maintains outstanding stability with less than 2% performance variation after three months of ambient exposure. Building on this platform, we created an integrated HC detection system that overcomes baseline drift issues through innovative pulse signal design. The system achieves detection limits of 8–16 nmol/L across a broad concentration range, while demonstrating excellent specificity against common interferents (urea, sodium chloride, and other electrolytes) and robust ambient light immunity. These combined advancements establish our photodetector as a transformative solution for next-generation medical HC monitoring systems.
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF POLYMERS AND THE ENVIRONMENT
·
2025
·
IF 5
Xu Weihua,Liu Tianxi,Han Yingying,Zheng Yu,Yan Shijing,You Hui
Sustainable polyurethane materials derived from biomass or degradable components hold great promise. In this study, we polymerized UV-photoreactive curcumin (Cur), hydroxyethyl hexahydrotriazine (HT), and polyethylene glycol (PEG) with isophorone diisocyanate to craft a bio-based polyurethane (Cur-PU) film that exhibits both degradability and UV cross-linking capabilities. The feed ratio, encompassing NCO/OH and the hydroxyl groups of the raw materials, was meticulously optimized through a series of structural and physicochemical tests to yield high-performance, degradable Cur-PU films. FT-IR spectra confirmed the successful synthesis of the material. Property assessments revealed that adjusting the relevant ratios enhanced the structural rigidity and crosslinking density of the Cur-PU, leading to improved thermal stability, mechanical strength, and accelerated degradation time. Specifically, at an NCO/OH ratio of 1.6 and a PEG-OH/HT-OH/Cur-OH ratio of 2/4/4, the Cur-PU film exhibited balanced performance characteristics, including a tensile strength of 12.1 MPa, an elongation at break of 516%, a glass transition temperature of 90.7 °C, a 5% weight loss temperature of 230 °C, and a degradation time of 2.12 h in 2 M phosphoric acid/ethanol. Furthermore, the optimally prepared Cur-PU showcased exceptional recyclability and UV-photocrosslinking properties. Its recycled products retained PEG and Cur components, and the high UV-photocrosslinking content contributed to enhanced Young’s modulus and thermal properties. When compared to conventional PU materials, the PU material developed in this study demonstrates environmental friendliness and broader application potential, thanks to its recyclability and photosensitivity advantages.
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Materials & Interfaces
·
2021
·
IF 9.229
Shengqiang Liu,Ning Mao,Zhen Song,Quanlin Liu
Near-infrared (NIR)-persistent luminescence (PersL) materials are of promising applications in labeling, tracing, bio-imaging, and so forth, featuring distinctive self-sustained NIR light emitting. The PersL radiation spectrum, PersL duration, and charging efficiency are recognized as the key enablers for high-performance NIR PersL materials. Here, we have designed and developed a series of broad-band NIR superlong PersL phosphors (Sr,Ba) (Ga,In)12O19:Cr3+ with efficient UV-red light charging capacity. Typical SrGa10.49In1.5O19:0.01Cr3+ presents intensive NIR PersL from 650 to 1000 nm peaking at ∼770 nm, with a PersL duration of 360 h. This material can be efficiently and repeatedly charged by solar radiation in various outdoor environments. Our work further identifies that this NIR PersL material is advantageous for labeling and tracing as a secret NIR additive and in situ bio-imaging as an optical probe under high tissue penetration red light excitation.
研究领域:
材料科学
·
生物医学工程
·
光学
✓ 已验证
DOI
高影响因子
MATERIALS & DESIGN
·
2016
·
IF 3.997
Siyu Qiang,Kunlin Chen,Yunjie Yin,Chaoxia Wang
For extending the lifespan of practical applications, a robust and self-healing superhydrophobic cotton fabric was successfully fabricated by facile dip coating and UV curing. The low surface energy and micro/nanoapophysis of superhydrophobic fabric were contributed by dip-coating components consisting of tri-functionality vinyl perfluoro decanol, vinyl-terminated polydimethylsiloxane and octavinyl-polyhedral oligomeric silsesquioxane. These obtained cotton fabrics exhibited superior resistance to various liquid pollutants, and had excellent resistance to the acid and alkali liquid. Furthermore, they were durable to withstand 10,000 cycles of abrasion, 120 h of accelerated weathering test and heating or freezing test. Most importantly, after 200 cycles of severe abrasion, they were able to restore the superhydrophobicity by brief heating treatment and showed excellent self-healing ability. These designed cotton fabric may contribute to the development of durable superhydrophobic textiles.
研究领域:
材料科学
·
纺织工程
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）