JOURNAL OF APPLIED POLYMER SCIENCE
·
2025
·
IF 2.8
Jun Deng,Yanhong Song,Shuai Liu
Phakic intraocular lenses (pIOLs) are an increasingly popular treatment for refractive errors, particularly myopia. However, there are limited materials available for pIOLs, and each has its issues such as non-foldability, low refractive index (RI), glistenings, or bioadhesion. In response to existing challenges, a series of poly(styrene-block-isobutylene-block-styrene) (SIBS) block copolymers are evaluated for pIOL application, and methacryloyloxyethyl phosphorylcholine (MPC) is grafted onto SIBS to further improve its anti-adhesive properties in this work. By controlling the styrene content, SIBS exhibits a tunable high RI of 1.521–1.532. Meanwhile, the SIBS materials are foldable and possess a glass transition temperature ( T g ) below −60°C. Furthermore, SIBS has a very low average glistening density below 20 MV/mm 2 . Given the hydrophobic nature of the materials, MPC is grafted onto the surface of SIBS, resulting in a notable decrease in water contact angle, protein adsorption, and relative bacterial adsorption from 102.7° ± 2.3°, 12.13 ± 1.82 μg/cm 2 , and 1.00 ± 0.33 to 78.2° ± 0.2°, 3.16 ± 0.93 μg/cm 2 , and 0.02 ± 0.01, respectively. Cytotoxicity and in vivo subcutaneous implantation experiments demonstrate that both SIBS and its modified counterpart are noncytotoxic and biosafe. Collectively, SIBS-based materials represent a promising option for the next generation of pIOLs.
研究领域:
眼科医学
·
生物材料科学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2015
·Vol. 132
·期 36
·
IF 1.768
Jinku Xu,Weiyue Zhu,Leilei Zhang,Yongchun Zhang
In this article, carbazole-grafted methacrylic polysiloxane (MA-CZ-PDMS) macromonomer was synthesized and its structure was confirmed by proton nuclear magnetic resonance ( 1 H NMR). The polysiloxane macromonomer can homogeneously copolymerize with methyl methacrylate (MMA) to prepare transparent and foldable carbazole-grafted polysiloxane-poly(methyl methacrylate) (PDMS-PMMA) membranes with a high refractive index (RI). The membranes were characterized by light transmittance, RI value, and dynamic mechanical thermal analysis (DMTA). The results indicated that the carbazole-grafted PDMS-PMMA membranes had excellent light transmittance that decreased slightly with increasing carbazole-grafted polysiloxane content. Incorporation of carbazole-grafted polysiloxane in the materials improved its RI value; however decreased the glass transmission temperature ( T g ) that can be adjusted to less than 30°C, enable the membrane foldable at room temperature. The data demonstrate that the carbazole-grafted PDMS-PMMA membranes have a potential application as high RI intraocular lens (IOL) suitable for implantation by minimally invasive surgery. © 2015 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2015 , 132 , 42491.
研究领域:
材料科学
·
生物医学工程
✓ 已验证
产品关联
DOI
高影响因子
NANOTECHNOLOGY
·
2023
·Vol. 35
·期 11
·115701
·
IF 3.5
Xi Chen,Jie Liu,Xun Li,Zhiqun Cheng,Tian-Song Deng
Colloidal gold nanorods (GNRs) have demonstrated their potential to absorb light within specific wavelength bands and induce photothermal effects. However, the unpredictability and lack of adjustability in the broadband spectrum formed by the self-assembly of gold nanospheres or the coupling of various sizes of GNRs have posed significant challenges. To address this, we have developed broadband GNRs (BGNRs) with a predictable and adjustable extinction band in the visible and near-infrared regions. The BGNRs were synthesized by simply mixing GNRs with different aspect ratios, allowing for control over the bandwidths and positions of the extinction bands. Subsequently, the BGNRs were coated with silica and underwent surface modification. The resulting BGNRs@SiO2 were then mixed with either polydimethylsiloxane (PDMS) or polyvinylidene fluoride (PVDF) to create BGNRs@SiO2/PDMS (or PVDF) films. The BGNRs@SiO2/PDMS and BGNRs@SiO2/PVDF films both exhibit excellent photothermal performance properties. Additionally, the light absorption intensity of the BGNRs@SiO2/PVDF film linearly increases upon folding, leading to significantly enhanced photothermal performance after folding. This work demonstrates that plasmonic colloidal GNRs, without the need for coupling, can yield predictable and adjustable extinction bands. This finding holds great promise for future development and practical applications, particularly in the transfer of these properties to films.
研究领域:
纳米技术
·
材料科学
·
光学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2017
·
IF 6.216
Xiao-Fei Wang,Gui-Gen Wang,Jia-Bing Li,Zheng Liu,Wen-Feng Zhao,Jie-Cai Han
In this article, a new application of using S, N co-doped graphene quantum dots (S, N-GQDs) as ideal color converters in solid-state white light-emitting diode (WLED) is reported. To this end, the S, N-GQDs with an average diameter of ∼4.46 nm are obtained by a hydrothermal approach using citric acid and thiourea as source materials. The PL spectra of S, N-GQDs show an excitation-independent behavior in the range of 300–380 nm. Under UV illumination, the S, N-GQDs display intense blue-light with the quantum yield of 51.2%. The PL mechanism is also investigated. Then, we fabricate freestanding luminescent composite films in a solution casting method by combining S, N-GQDs with YAG:Ce 3+ phosphors based on a polyvinyl alcohol (PVA) matrix. The luminescent films have superior foldability and photostability and excellent heat resistance, and retain their optical performances in the solid-state. To realize their potential, a high-powered remote WLED has been demonstrated. The results indicate that S, N-GQDs and YAG:Ce 3+ can be homogeneously dispersed in the PVA without aggregation so that uniform white-light emission can be obtained. These composite films containing S, N-GQDs are promising to be used in state-of-the-art UV-pumped remote WLED according to their wide wavelength emission and collapsible illumination device.
研究领域:
材料科学
·
光电技术
·
纳米技术
·
光子学
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）