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Carbon nanodots crosslinked photoluminescent alginate hydrogels

机译:碳纳米蛋白交联光致发光海藻酸盐水凝胶

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摘要

Alginate hydrogels are commonly used in biomedical applications and these hydrogels are usually prepared by ionic or covalent crosslinking. This study reports a new synthesis route for preparing photoluminescent alginate hydrogels using amine functionalized carbon nanodots (CNDs). CNDs with amine functional groups have been synthesized from ortho, para, and meta phenylenediamine by using the solvothermal method. The nanodots display yellow, red, and blue color when excited with a UV light with the wavelength of 365 nm. Amine groups on the CNDs form chemical crosslinks with alginate chains leading to the formation of a crosslinked network. The sol-to-gel transition has been monitored by using in situ shear rheometry. The CNDs crosslinked hydrogels maintain their fluorescent activity in a phosphate-buffered saline solution for a prolonged duration. Stable hydrogels with photoluminescent activity will have potential applications in metal ions sensing, drug delivery, and other biological applications.
机译:藻酸盐水凝胶通常用于生物医学应用中,并且这些水凝胶通常通过离子或共价交联制备。本研究报告了一种新的合成途径,用于使用胺官能化碳纳米蛋白(CNDS)制备光致发光藻酸盐水凝胶。通过使用溶剂热法从Ortho,Para和Meta苯二胺合成具有胺官能团的CNDS。当用波长为365nm的UV光激发时,纳米型显示黄色,红色和蓝色。 CNDS上的胺基团形成具有藻酸盐链的化学交联,导致形成交联网络。通过使用原位剪切轮廓测压来监测溶胶至凝胶转变。 CNDS交联水凝胶在磷酸盐缓冲的盐水溶液中保持荧光活性,延长持续时间。具有光致发光活性的稳定水凝胶将具有金属离子感测,药物递送和其他生物应用中的潜在应用。

著录项

  • 来源
    《RSC Advances》 |2017年第79期|共7页
  • 作者单位

    Mississippi State Univ Dave C Swalm Swalm Sch Chem Engn Mississippi State MS 39762 USA;

    Mississippi State Univ Dave C Swalm Swalm Sch Chem Engn Mississippi State MS 39762 USA;

    Mississippi State Univ Dave C Swalm Swalm Sch Chem Engn Mississippi State MS 39762 USA;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 化学;
  • 关键词

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