Amine-responsive cellulose-based ratiometric fluorescent materials for real-time and visual detection of shrimp and crab freshness.,Nature Communications

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Amine-responsive cellulose-based ratiometric fluorescent materials for real-time and visual detection of shrimp and crab freshness.
Nature Communications ( IF 14.7 ) Pub Date : 2019-02-15 , DOI: 10.1038/s41467-019-08675-3
Ruonan Jia _{1,

2} , Weiguo Tian ₁ , Haotian Bai ₃ , Jinming Zhang ₁ , Shu Wang _{2,

3} , Jun Zhang _{1,

2}

Affiliation

Herein, we design and prepare cellulose-based ratiometric fluorescent materials with superior amine-response, which offers the real-time and visual detection of seafood freshness. Through utilizing the reactive hydroxyl groups along cellulose chains, we covalently immobilize the fluorescein isothiocyanate (FITC) as indicator and protoporphyrin IX (PpIX) as internal reference onto cellulose acetate (CA), respectively. Subsequently, a series of dual-emission solid fluorescent materials are achieved by simply blending green emitting CA-FITC with red-emitting CA-PpIX with varying ratios. They exhibit a sensitive, color-responsive, rapid and linear response to ammonia in a wide range of 5.0 ppm to 2.5 × 104 ppm. Benefiting from the excellent solubility and processibility of cellulose derivatives, the as-prepared materials are readily processed into different material forms, including printing ink, coating, flexible film, and nanofibrous membrane. The electrospun nanofibrous membrane is successfully employed as a low-cost, high-contrasting, quick-responsive fluorescent trademark for visual monitoring the freshness of shrimp and crab.

中文翻译：

胺响应纤维素基比例荧光材料，用于实时视觉检测虾和蟹的新鲜度。

在此，我们设计并制备了具有优异胺响应性的纤维素基比率荧光材料，可提供海鲜新鲜度的实时视觉检测。通过利用纤维素链上的反应性羟基，我们分别将作为指示剂的异硫氰酸荧光素 (FITC) 和作为内参的原卟啉 IX (PpIX) 共价固定在醋酸纤维素 (CA) 上。随后，通过简单地将绿光CA-FITC与红光CA-PpIX以不同比例混合，获得了一系列双发射固体荧光材料。它们对 5.0 ppm 至 2.5 × 104 ppm 的氨气表现出灵敏、颜色响应、快速且线性的响应。得益于纤维素衍生物优异的溶解度和加工性能，所制备的材料很容易加工成不同的材料形式，包括印刷油墨、涂料、柔性薄膜和纳米纤维膜。电纺纳米纤维膜已成功用作低成本、高对比度、快速响应的荧光商标，用于视觉监测虾和蟹的新鲜度。

更新日期：2019-02-15

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