Analytical Methods
·
2024
·Vol. 16
·期 48
·8380-8389
·
IF 2.7
Zhuoxing Wu,Bolin Yu,Huien Gong,Yiquan Tang,Jiaxian Chen,Yingying Jian,Danmei Wei,Hongyun Meng,Chunhua Tan
The concentration of formaldehyde in the environment must be precisely monitored, as it is closely linked to human health. In this paper, a decaboryl derivative formaldehyde fluorescent probe (M1) was synthesized for the first time by introducing a 5-amino-isoquinoline group into a decaborane parent. Using theoretical calculations, 1H-NMR, 11B-NMR, HR-MS, and FT-IR, the molecular structure of the probe was determined and its response mechanism to formaldehyde was examined. The fluorescence response of the probe to formaldehyde was then tested, revealing an augmented response to formaldehyde in a solution of 0–600 μM, with a detection limit of 4.18 × 10−6 M. The results show that the formaldehyde fluorescence probe has the advantages of good linearity, strong anti-interference and high sensitivity. On this basis, a fiber optic formaldehyde fluorescence sensor based on an M1/PMMA thin film was constructed in this paper. This fiber optic fluorescence sensor, with its high selectivity, low detection limit, online and remote monitoring, and other advantages, was successfully applied to the detection of formaldehyde in both food and aqueous solutions, with results that were reliable compared to those of acetone. The detection limit of formaldehyde increased to 6.9 × 10−8 M. The potential for its utilization in the chemical, biological, environmental, and other formaldehyde detection fields is quite promising.
研究领域:
环境科学
·
分析化学
·
生物医学工程
✓ 已验证
DOI
PubMed
高影响因子
JOURNAL OF LUMINESCENCE
·
2018
·
IF 2.732
Siqi Fan,Xu Yao,Jingfang Li,Weizuo Li,Guangming Li
In view of the potential application of NIR luminescence in biology, a series of four new 3,5-Heptanedione (β-diketonate) ytterbium complexes, e.g. [Yb(L) 3 (H 2 O) 2 ] ( 1 ), [Yb(L) 3 (2,2′-bpy)] ( 2 ), [Yb(L) 3 (dpq)] ( 3 ) and [Yb(L) 3 (dppz)] ( 4 ) have been designed and isolated. Crystal structures analysis show that all complexes 1 – 4 exhibit the similar mononuclear structure, in which the central Yb 3+ ion is eight-coordinated forming the square-anti-prismatic geometry. NIR luminescence of all complexes 1 – 4 shows strong characteristic emission of Yb 3+ ions. To improve the mechanical and thermal stability, complex 1 was further doped into poly-(methyl methacrylate) (PMMA) for preparing a thin film ( 1 @PMMA). Their thermal stability and NIR luminescence were essentially enhanced in contrast to that for complex 1 . This NIR luminescent thin film may be of potential applications in biological dictation and luminescent probe.
研究领域:
材料科学
·
生物医学工程
✓ 已验证
DOI
高影响因子
JOURNAL OF POLYMER RESEARCH
·
2025
·Vol. 32
·期 5
·1-11
·
IF 2.8
Sang Zhuo,He Liangyong,Yang Bin,Lu Tianyu,Kang Shijun,Sang Jiaojiao,Zheng Zhengzhi,Hu Weiqiang,Qian Jiasheng,Jia Ning,Ke Yuchao
In this work, free radical solution polymerization was used to prepare polymeric nanocomposite films by copolymerization of flexible butyl acrylate (BA) monomer and modified nano−silica with methyl acrylate (MMA) monomer. Our findings showed that the addition of BA monomer and nano−silica had limited effect on the transmittance of PMMA films, and the transmittance could achieve as high as 93%. Perfect overall properties of the as−prepared films (with a tensile strength of 36 MPa and an elongation at break of 42%) could be achieved when the monomer MMA:BA was set as 6:2 at a nano−silica content of 20 wt%. The PMMA−based nanocomposite films prepared in this work possessed excellent transparency, desired toughness and good hydrophobicity, which made them potentially promising for the applications as protective films for polarizing films.
研究领域:
材料科学
·
聚合物化学
✓ 已验证
产品关联
DOI
高影响因子
Coatings
·
2021
·Vol. 11
·期 9
·1107
·
IF 2.881
Xiaoming Feng,Guizhong Tian,Shichao Niu,Honggen Zhou
Transparent substrates with antifogging and antireflection ability are of extreme significance for optical devices, because they alleviate performance loss and maintenance costs. Here, we reported that a multifunctional film, with excellent mechanical properties, can be fabricated on the PMMA surface via the micro-transfer printing method. In particular, the synergistic effect of the inverted pyramid microstructure and SiO2nanoparticles gives the film excellent antireflective, superhydrophilic and antifogging properties, and the silica sol firmly adheres to the PMMA substrate via the silane coupling agent, which exhibits an encouraging prospect of practical applications from lenses for personal and sports eyewear to transparent displays and sensors, etc.Keywords:coupled PMMA film;inverted pyramid microstructures;superhydrophilicity;antifogging;antireflection
研究领域:
材料科学
·
光学工程
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Polymer Materials
·
2025
·
IF 4.7
Yuhan Zhang,Ziqi Dong,Xiaodong Yang,Zengsheng Guo,Fangzheng Qi,Bo Xu,Guang-Ning Liu,Yiqiang Sun,Cuncheng Li
Passive daytime radiative cooling (PDRC) technology has garnered significant attention as a sustainable cooling solution that enables subambient cooling without additional energy input. The current design strategy for PDRC films mainly relies on composite porous matrices containing inorganic nanoparticles, which have bottleneck problems, such as low material utilization, high process complexity, and high manufacturing costs. In contrast, herein we develop a self-embedded cooling film through nonsolvent-induced phase separation, where poly(methyl methacrylate) (PMMA) nanoparticles spontaneously embed within a PMMA porous matrix. Through the synergistic interaction between particles and pores, an efficient broadband solar light scattering network was constructed, yielding a high solar reflectance of up to 95%. Meanwhile, the integrated structural design enhances the vibrational modes of intrinsic chemical bonds in PMMA, thereby improving mid-infrared radiative performance and enabling a high infrared emissivity of 96%. In addition, the fabrication process is fully scalable, requiring no filler doping or post-treatment. The film delivers a temperature reduction of 15.8 °C under direct sunlight, underscoring its strong potential for practical deployment in passive radiative cooling applications.
研究领域:
材料科学
·
纳米技术
·
光学
·
热工学
✓ 已验证
产品关联
DOI
高影响因子
Journal of Materials Chemistry C
·
2023
·Vol. 12
·期 3
·922-929
·
IF 6.4
Xiangshi Bin,Jiaxing Liu,Ruosheng Zeng,Hongbang Liu,Jialong Zhao,Tao Lin
Fast and convenient synthesis of zero-dimensional (0D) cesium-copper(I) halide (Cs3Cu2X5 (X = Cl, I)) single crystals (SCs) is critical to achieve practical radiography. In this study, rapid growth of high-quality Cs3Cu2X5 (X = Cl, I) SCs with sizes reaching centimeter scale were achieved within 24 hours using scalable solution-phased methods. These crystals exhibited highly effective emission with large Stokes shifts, excellent PL linearity, and PLQYs exceeding 86%. Additionally, post-treated Cs3Cu2X5–PMMA films demonstrated outstanding scintillation performance, including excellent stabilities, light yield surpassing 36 000 photons per MeV, and spatial resolution up to 6.5 lp per mm in X-ray imaging tests. The high scintillation efficiency can be attributed to their compact 0D crystalline structure, resulting in a small defect density and strong exciton localization.
研究领域:
材料科学
·
晶体生长
·
放射学
·
光学
✓ 已验证
产品关联
DOI
高影响因子
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