MACROMOLECULES
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2017
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IF 5.835
Ziyang Sun,Huahua Huang,Le Li,Lixin Liu,Yongming Chen
Sulfur-containing polymers have renewed widespread attention due to their fascinating properties like high refractive index and semiconducting character. However, examples of direct polymerization involving elemental sulfur are limited. Herein, a new strategy to prepare polythioamide (PTA) by direct polymerization of aliphatic primary diamines in the presence of sulfur is reported. The polymerization of p-xylylenediamine (1) and sulfur at 110 °C in N-methyl-2-pyrrolidinone afforded PTA1 of high Mw and high yield when the feed ratio of [1]:[S] ranged from 1:2 to 1:3. 1H NMR and 13C NMR spectra confirmed that there are three kinds of structural units among the PTA1 chains. Moreover, different diamines including m-xylylenediamine (2), 1,6-hexanediamine (3), ethylenediamine (4), and 1,4-cyclohexanediamine (5) were copolymerized with 1 in the presence of sulfur to obtain PTA copolymers. With an increase in 5 content, the copolymer PTA1/5 with an alternating sequence in the range of 56%–94% was prepared. Solubility and thermal properties of homopolymers and copolymers were studied. Meanwhile, the copolymers PTA1/3 and PTA1/5 possessed a high refractive index as high as 1.7.
研究领域:
材料科学
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化学工程
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DOI
高影响因子
JOURNAL OF POLYMER RESEARCH
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2010
·Vol. 18
·期 6
·1261-1268
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IF 1.364
Zhang Gang,Huang Guang-shun,Wang Xiao-jun,Long Sheng-ru,Yang Jie
Two kinds of aromatic dibenzoyl chloride monomer containing thioether unit 4,4′-Bis(4-chloroformylphenylthio)benzophenone (BP-DC) and 4,4′-thiodibenzoyl chloride (T-DC) were synthesized with two steps, which was reacted with diamine monomer containing thioether and amide unit to prepare a new kind of polyamide containing high quantity thio-ether group. The intrinsic viscosity of the polyamides was 0.76–0.90 dl/g obtained with optimum synthesis conditions. The polymers were found to have good optical properties: the optical transmittance of the aromatic polyamide film at 450 nm is higher than 80%, meantime the high quantity thio-ether unit provided the polymer with a high refractive index ranging from 1.691 to 1.696 and low birefringence of 0.007–0.008. At the same time the polymers had excellent thermal performance with glass transition temperature (T g ) of 226 °C–278 °C, initial degradation temperature (T d ) of 427 °C–439 °C. They showed improved solubility in polar aprotic solvents.
研究领域:
材料科学
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化学工程
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DOI
高影响因子
ACS Applied Nano Materials
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2021
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IF 5.097
Xiaoxiang Wen,Xuegang Lu,Chaoping Wei,Jianing Li,Yanlin Li,Sen Yang
Bright structural colors with an angular-independent character are in increasing demand in many fields such as pigments, buildings, sensors, color displays, and anti-counterfeiting labels. However, the structural colors produced by amorphous colloidal assemblies with low refractive index contrast or without black additives often exhibit low color visibility and low liquid-bleaching resistibility. Herein, large-scale and angle-independent structural colors were constructed from Fe3O4@SiO2 colloidal quasi-amorphous arrays (QAAs) prepared through a rapid “spraying” process. Due to the high-refractive-index and intrinsic black nature of Fe3O4, the coatings exhibit high brightness of structural colors even on white substrates under ambient lighting conditions. Moreover, as-obtained structural colors possess the ability of antiliquid bleaching and solvent-responsiveness. More importantly, flexible Fe3O4@SiO2/PDMS photonic paper can be fabricated by permeation of PDMS into the voids of Fe3O4@SiO2 colloidal QAAs. This QAAs-based photonic paper shows the ability to infuse silicone oils into its structure, locally swelling it and changing the reflected color. In turn, the resulting colored patterns can be easily erased by applying ethanol or low molecular weight silicone oils. The as-prepared photonic paper exhibits excellent durability and is rewritable at least 50 times without any significant changes in performance. Compared with the traditional long-range ordered photonic crystals, the rapidly prepared QAAs-based photonic coatings have unique advantages in the applications of permanents, color coatings, color printing, liquid colorimetric sensors, rewritable photonic paper, etc. because of the good structural color performance and are suitable for rapid and large-area preparation.
研究领域:
材料科学
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光学
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DOI
高影响因子
ACS Applied Materials & Interfaces
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2023
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IF 9.5
Bin Guo,Mingxuan Wang,Diqin Zhang,Minyuan Sun,Yong Bi,Yuxia Zhao
Photopolymers hold great promise for the preparation of transparent volume holographic gratings (VHG), which are core optical elements in many application fields. To improve the holographic recording property of a two-stage photopolymer, four new (meth)acrylate monomers (CTA, CTMA, CTBA, CTBMA) with high refractive indices (1.59–1.63) are designed and synthesized in this study. Using them as one writing monomer, a series of photopolymer samples with different formulations and thicknesses are fabricated for holographic recording. Among them, a formulation containing 9 wt % CTMA shows the best performance. Using it as a recording medium, a VHG with high resolution and diffraction efficiency is constructed. Its refractive index modulation reaches 0.046. Moreover, its total transmittance within 400–800 nm achieves 96.62% after photobleaching. The results indicate that the CTMA-based formulation has great application potential in developing high-performance transparent VHG.
研究领域:
材料科学
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光学工程
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DOI
PubMed
高影响因子
Materials Science & Engineering C-Materials for Biological Applications
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2018
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IF 5.08
Peili Zhao,Jinku Xu,Yongchun Zhang,Weiyue Zhu,Yuezhi Cui
Refractive index (RI) is an important parameter for contact lens biomaterials. In this paper, a novel polymerizable-group capped ZnS nanoparticle (NP) was synthesized by chemical link between hydroxyl group on the surface of ZnS (ME-capped) and isocyanate group of polymerizable molecule of 2-isocyanatoethyl methacrylate. Then the ZnS NP copolymerized with monomer of 2-hydroxyethyl methacrylate (HEMA) and N , N -dimethylacrylamide (DMA) to prepare high refractive index hydrogel contact lens with high content of inorganic ZnS NP. Increasing polymerizable-group capped ZnS content in the hydrogels improved its RI value and mechanical properties, however decreased slightly its transmittance, equilibrium (ESR) and lysozyme deposition on the hydrogel surface. The ZnS-containing hydrogels possessed good cytocompatibility and in vivo biocompatibility in rabbit eyes, demonstrating a potential application as high RI ocular refractive correction biomaterial.
研究领域:
材料科学
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生物医学工程
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眼科
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DOI
PubMed
高影响因子
MACROMOLECULES
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2015
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IF 5.8
Shuang Chen,Dongxue Chen,Min Lu,Xin Zhang,He Li,Xiaoyan Zhang,Xiaoming Yang,Xiaohong Li,Yingfeng Tu,Christopher Y. Li
To achieve high refractive index polymers (HRIPs), we report here the design and synthesis of four fullerene polyesters (P1–P4), based on the conjunction effect from the high refractive index polyester backbones and pendent fullerene side chains. At sodium D line (589 nm), the refractive indices of the fullerene polyesters are all higher than 1.80, the used believed upper limitation of intrinsic organic polymers. To achieve precise pendent fullerene structure, these polyesters were synthesized via condensation polymerization by a fullerene diol with different aromatic diacyl chlorides, where the diacyl chlorides with high molar refraction increment value moiety were selected by molecular tailoring according to Lorentz–Lorenz equation. The fullerene polyesters are characterized by gel permeation chromatography (GPC), ultraviolet–visible (UV–vis) spectroscopy, and the molecular weights are obtained by a quantitative NMR technique with end-group estimation. The formation of fullerene polyesters is also proved by the 1H DOSY NMR results. These fullerene polyesters have good solubility in some common organic solvents, good thermal stability up to 320 °C, and film forming ability. All these films have good adhesion to glass sheets with relatively good hardness. Among them, the thiophene-containing fullerene polyesters (P1) has the best optical properties, with the highest refractive index value (1.86 at 589 nm), one of the highest value for intrinsic organic polymers, and the highest Abbe number (27.9).
研究领域:
材料科学
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有机化学
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DOI
高影响因子
ACS Applied Polymer Materials
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2025
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IF 4.7
Zongao Dou,Jiajun Li,Zichen Shi,Jing Sun,Qiang Fang
Carbazole-based polymers having a high refractive index of above 1.70 and desirable Abbe number are reported here. These polymers were prepared by the photoclick thiol–ene reaction of two types of allyl-containing carbazole monomers with thiophenol or mercaptans. Among the monomers, those possessing allyl substituents at positions 2 and 7 give the polymers with higher refractive index and satisfactory Abbe number. The polymers also display good thermal and mechanical properties. Moreover, the films prepared from these polymers exhibit good surface roughness. This is a first example regarding the high refractive index polymers derived from allyl-containing carbazoles, and the results suggest the polymers have a potential application as the optical materials in the industry.
研究领域:
材料科学
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光学
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DOI
高影响因子
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
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2024
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IF 3.8
Zhengkai Li,Heng Wang,Hanwen Yan,Hao Wang,Zhencai Zhang,Yiwen Zhang,Junyu Chu,Feng Huo,Fei Xu
Biobased poly(isosorbide carbonate) (PIC) has the advantages of renewable sources, nontoxic environmental resistance, and high transparency. However, the optical properties of PIC are limited by the rigid alicyclic skeleton within polymer chains, resulting in a low refractive index and high birefringence. In this work, a novel diether anthraquinone (DAQ) monomer containing an aromatic cardo-ring and carbonyl-modified side group was designed and synthesized, which successfully improved the refractive index and inhibited the birefringence by reducing optical anisotropy combined with increasing the molar refractive index of repeating units. To overcome the potential steric effect of DAQ and low activity of endo-OH groups on isosorbide (ISB), highly active choline tartaric acid (ChTa) ionic liquid catalysts were designed and evaluated systematically, resulting in a series of copolymers with sufficient Mw (up to 140,800 g/mol). Notably, poly(ISB-co-DAQ carbonate) with 30/70 mol % of ISB/DAQ (PI30D70C) exhibited excellent optical properties with ignorable birefringence (Δn = 0.0005) and high transmittance (89%), and especially higher refractive index (nd = 1.6207) than PIC (nd = 1.4966) at 589 nm. Additionally, the copolycarbonates had excellent thermal, mechanical, and hydrophobicity properties, indicating their potential for optical applications and providing a strategy for designing optical polycarbonates.
研究领域:
材料科学
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光学工程
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绿色化学
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DOI
高影响因子
MACROMOLECULES
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2017
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IF 5.835
Haie Zhu,Min Chen,Shuxue Zhou,Limin Wu
A conventional optical microscope fails to resolve features with sizes smaller than 200 nm due to the Abbe diffraction limit. Herein, we synthesize two kinds of high refractive index and shape controllable colloidal polymer microspheres, poly(9,9′-bis[4-(2-acryloyloxyethyloxy)phenyl]fluorene) (poly(BAEPF)) and poly(2-phenylphenoxyethyl acrylate) (poly(OPPEA)), used for solid immersion lens. It is the high refractive index and close contact with the surface features that can make the colloidal polymer microsphere-based microlens effectively collect evanescent information on the substrate and form a clear and magnified virtual image at certain position below the substrate surface. Thus, as small as 60 nm feature size on the substrate can be clearly resolved through the microlens under a visible light optical microscope, which is far beyond the resolution limit of a visible light microscope.
研究领域:
材料科学
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光学
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显微技术
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DOI
高影响因子
Coatings
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2021
·Vol. 11
·期 2
·129
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IF 2.881
Weiping Du,Shuting Cai,Yang Zhang,Huifang Chen
The homogeneous SiO2-TiO2composite sols were prepared by organic-inorganic synchronous polymerization with titanium isopropoxide and tetrabutyl silicate as precursor. The organic-inorganic composite hard coating with Si-O-Ti as the framework was prepared by adding compound crosslinkers (up-401) and 3-Methacryloxypropyltrimethoxysilane (KH-560). The structure of the coating and the hardened film were characterized by infrared spectrum, scanning electron microscopy, atomic force microscopy, particle size analyzer and thermogravimetry. The refractive index, transmittance and hardness of the hardened film were measured by ellipsometry, UV-Vis spectrophotometer and hardness tester. By adjusting the ratio of Si/Ti and optimizing the reaction conditions, the hardness of the hardened film could reach 6H, and the refractive index could be adjusted from 1.55 to 1.76. At the same time, the application of hard coatings on the surface of optical lens were studied.Keywords:resin lens;high refractive index;hard coating;nano titanium dioxide;sol-gelmethod
研究领域:
材料科学
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光学工程
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DOI
高影响因子
PROGRESS IN ORGANIC COATINGS
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2020
·
IF 4.469
Jiandong Zuo,Zhao Liu,Chaoyun Luo,Feng Lin
Three kinds of biscitraconimide (BCI) monomers, 4,4′-(diaminodiphenylsulfone) biscitraconimide (DDS-BCI), 1,2-(ethylenediamine) biscitraconimide (EDA-BCI) and m-(xylylenediamine) biscitraconimide (MXDA-BCI), were respectively prepared from the reaction of citraconic anhydride with three different diamines by reflux dehydration in glacial acetic acid. As-prepared products further reacted with 4,4′-thiodibenzenethiol (TDBT) and 1,6-hexanedithiol (HDT) to synthesize a series of new transparent thermoplastic polythioetherimides (PTEI) films with excellent solubility, high refractive index and low birefringence. All PTEI films had the 5% weight loss temperature between 332 °C and 417 °C and the thermal expansion coefficient ranged from 39.4–94.8 ppm/°C, showing good thermal stability. Besides, the transmittance of PTEI film at 450 nm exceeded 85 %, the average refractive index (n av ) measured at 589 nm reached up to 1.6236 ∼1.6635 and in-plane/out of-plane birefringence (Δn) values were between 0.0014 and 0.0036. Especially DDS-BCI/TDBT sample exhibited the highest refractive index, relatively small birefringence and excellent thermal stability among all PTEI films, which is expected to be an ideal advanced optical material.
研究领域:
材料科学
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化学工程
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DOI
高影响因子
POLYMERS FOR ADVANCED TECHNOLOGIES
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2018
·Vol. 29
·期 8
·2245-2252
·
IF 2.137
Lin Tong,Yakai Feng,Xujun Sun,Ying Han,Dongshun Jiao,Xiaohua Tan
The encapsulation of high power light emitting diode (LED) needs the silicone resins to have relative high refractive index and thermal-aging properties. Herein, high refractive index adamantane-based phenyl epoxy-silicone (APES) resins for LED encapsulation were synthesized by the sol-gel condensation of 1-adamantane methanol propyltrimethoxysilane-3-urethane, γ-(2,3-epoxypropoxy)propytrimethoxysilane and diphenylsilanediol. These adamantane-based silicone resins have multifunctional groups including adamantyl group, phenyl group, and epoxy group in order to meet the various requirements for LED encapsulation. Importantly, the adamantane group in the silicone resins benefits for high refractive index and anti-thermal properties. These APES resins were characterized by proton nuclear magnetic resonance and Fourier transform infrared spectroscopy. When APES resins were cured by methylhexahydrophthalic anhydride, they showed relatively high refractive index of 1.56, high hardness, and high thermal resistance. The encapsulated LED demonstrated high adhesion properties by red-ink tests. These merits make adamantane-based silicone resins promising candidates as LED encapsulation materials.
研究领域:
材料科学
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光学工程
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产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）