Guangdong Provincial Engineering Technology Research Center for Optical Agriculture, College of Materials and Energy, South China Agricultural University, Guangzhou 510642, China.
Guangdong Provincial Engineering Technology Research Center for Optical Agriculture, College of Materials and Energy, South China Agricultural University, Guangzhou 510642, China.
Carbohydr Polym. 2016 Oct 20;151:245-250. doi: 10.1016/j.carbpol.2016.05.063. Epub 2016 May 20.
Transparent sunlight conversion film based on carboxymethyl cellulose (CMC) and carbon dots (CDs) has been developed for the first time through dispersion of CDs in CMC aqueous solution. Due to the hydrogen bonds interaction, CMC can effectively absorb the CDs, whose surfaces are functionalized by lots of polar groups. The results from atomic force microscopy (AFM), scanning electron microscopy (SEM) confirm that the composite film possesses a homogeneous and compact structure. Besides, the CMC matrix neither competes for absorbing excitation light nor absorbs the emissions of CDs, which reserves the inherent optical properties of the individual CDs. The composite films can efficiently convert ultraviolet light to blue light. What's more, the film is transparent and possesses excellent mechanical properties, expected to apply in the field of agricultural planting for sunlight conversion.
首次通过在羧甲基纤维素（CMC）水溶液中分散碳点（CDs）制备了基于羧甲基纤维素（CMC）和碳点（CDs）的透明阳光转换膜。由于氢键相互作用，CMC 可以有效地吸收 CDs，其表面由许多极性基团官能化。原子力显微镜（AFM）、扫描电子显微镜（SEM）的结果证实了复合膜具有均匀致密的结构。此外，CMC 基质既不竞争吸收激发光，也不吸收 CDs 的发射，保留了单个 CDs 的固有光学特性。复合膜可以有效地将紫外光转换为蓝光。更重要的是，该薄膜透明且具有优异的机械性能，有望应用于农业种植领域的阳光转换。
