A Green Approach to Endow Chitin Nanofiber with Fluorescence
A Green Approach to Endow Chitin Nanofiber with Fluorescence
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赋予甲壳素纳米纤维荧光的绿色方法
DOI：
10.1166/jcc.2015.1085
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发表时间：
2015
期刊：
影响因子：
--
通讯作者：
Shinsuke Ifuku
中科院分区：
文献类型：
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作者：
Ajoy Kumar Dutta;Hironori Izawa;Minoru Morimoto;Hiroyuki Saimoto;Shinsuke Ifuku
首次提出了一条绿色路线，使甲壳素具有荧光性。为了实现这一点，部分脱乙酰甲壳素纳米纤维与1，2-萘二甲酸酐在水中反应。元素分析数据和FT-IR光谱表明，萘甲酰部分自发地纳入到纳米纤维到一定的时间。扫描电子显微镜观察表明，这种化学改性对纳米纤维的形态没有影响，表明改性只发生在表面。萘甲酰化甲壳素NF分散体和与丙烯酸树脂的纳米复合膜在特定波长激发时表现出荧光，并在紫外光下显示出令人印象深刻的蓝色。萘酰部分与几丁质纳米纤维的稳定连接在生物传感和污染物筛选应用中具有很高的潜力。
A green route has been developed to endow chitin nanofiber with fluorescence for the first time. To achieve this, partially deacetylated chitin nanofibers were reacted with 1,2-naphthalic anhydride in water. Elemental analysis data and FT-IR spectra revealed that naphthaloyl moieties were incorporated into the nanofibers spontaneously up to a certain time. Scanning electron microscopy observation showed that this chemical alteration had no morphological effects on the nanofibers, indicating that the modification took place only at the surface. Naphthaloylated chitin NF dispersion and the nanocomposite film with acrylic resin exhibited fluorescence when excited with a particular wavelength and displayed an impressive bluish color under UV light. The stable linkage of naphthloyl moieties with chitin nanofiver holds high potential for biosensing and pollutant screening applications.