|
|
|
题名
|
作者
|
年代
|
出处
|
被引量
|
| 1 | Characterization and properties of a Sr2Si5N8:Eu^2+-based light-conversion agricultural film显示文摘In this paper,the fracture surfaces of a light-conversion film were observed using a scanning electron microscope(SEM),and then,the fluorescence spectra and mechanical properties of the film were tested.The SEM results show that the average diameter of the light conversion agent is 500 nm.The results of the mechanical properties tests show that the tensile strengths of light-conversion film increase from9.86 to 12.16 MPa and that the strain at breakage increases from 2.37%to 2.75%.In addition,the application effects of the light-co nversion film were studied.The results indicate that plant height,length of the maximum leaf,width of the maximum leaf and breadth of the plants increase by 24.43%,15.30%,15.60%and 19.07%,respectively.The quality of Chinese flowering cabbages treated with the lightconversion film is superior,including a 9.09%increase in the soluble protein content,a 21.27%increase in the polyphenol content,and a 19.15%increase in the soluble sugar content.Based on these results,light-conversion films can be applied in agricultural production. | Weibin Wu Zhenbang Zhang Riyue Dong Gening Xie Jianxian Zhou Kejue Wu Haonan Zhang Qianpei Cai Bingfu Lei | 2020 | Journal of Rare Earths2020，38，5： | 7 |
| 2 | 上转换光致发光的原理及应用进展显示文摘上转换光致发光属于反斯托克斯发光过程,可以将低能量(低频率、长波长)的激发光转变成高能量(高频率、短波长)的发射光,实现频率或能量的“上转换”光致发光。文章介绍了上转换光致发光的基本原理,并概述了上转换发光在不同领域中的应用研究进展,包括生物医学、太阳能电池、光学超分辨成像、传感与检测、指纹提取、防伪印刷、作物种植等。随着科学技术的发展和相关研究工作的深入,上转换发光有望扩展到更宽广的应用领域中去。 | 陆冉华 李安明 杨杰杰 赵严威 李淑冰 袁硕昕 | 2022 | 科技创新与应用2022，12，1： | 3 |
| 3 | 多核稀土离子掺杂有机配合物转光剂的制备与应用显示文摘为加快实现农业新旧动能转换,建设现代农业强国,转光农膜一直被作为“光学农业”领域的重要研究方向之一。转光农膜的制备需要具有良好耐候性和优异转光特性的转光剂,但是现有的转光剂存在发射光谱单一和发射范围窄的问题,这导致转光剂的发射光谱与植物光合作用吸收光谱匹配度较差,严重限制了转光农膜的发展。本文合成了一类以水杨酸和邻菲啰啉为配体、多种稀土离子(Sm^(3+)、Eu^(3+)和Y^(3+))掺杂的有机配合物(转光剂)发光材料。数据表明,通过Sm^(3+)的掺入显著拓宽了该类转光剂的荧光光谱。利用吹塑法将合成的转光剂掺入乙烯-1-己烯共聚物(PO)薄膜中,制备了具有紫外光转红光作用的转光农膜。采用FTIR和XPS确定转光剂的成分和结构组成。同时利用TGA55和组合式瞬态/稳态荧光光谱仪(FLS920)对转光剂和转光农膜的热稳定性和光学性质进行表征。测试结果表明,合成的转光剂可以吸收紫外光(波长λ=250~400 nm)并发射出红光(λ=610~660 nm),该光谱性质与植物光合作用在红光区的吸收光谱匹配性较高,并且利用该类转光剂制备的转光农膜仍旧保持了良好的发光性能,这将有利于转光剂在农膜领域中的推广和应用。本文为拓宽转光剂荧光发射范围,提高与植物光合作用在红光波段吸收光谱的匹配度,提供了一种切实可行的方法,并将转光剂成功应用于制备转光农膜,达到了较好的紫外转红光的目的。 | 周明明 刘威 杨成祥 赵修贤 杨震 路翔翔 蒋绪川 | 2023 | 复合材料学报2023，40，4： | 2 |
| 4 | 荧光硅量子点作为叶面光肥提高生菜对光能利用率的机理研究显示文摘采用水热法制备了荧光硅量子点。通过透射电镜、红外光谱、X射线光电子能谱、光致激发和发射光谱及荧光衰减曲线等手段对样品形貌及发光性能进行了研究。通过生菜种植实验,研究了荧光硅量子点作为叶面光肥提高生菜对光能利用效率的效应。实验结果表明,透射电镜测得所制备的荧光硅量子点尺寸均一,平均尺寸为3.6 nm。傅里叶红外变换光谱及X射线光电子能谱表明该量子点表面具有丰富的含氧官能团,因而具有优异分水散性。光致荧光光谱表明,该量子点的最佳激发和发射峰位分别为385 nm和450 nm,且不具备激发波长依赖特性。荧光硅量子点与生菜的离体叶绿体复合后发现,荧光强度下降但激发态寿命基本不变,同时,复合物对2,6-二氯酚靛酚的还原速率提高。以上结果表明,荧光硅量子点与叶绿体复合时产生了内滤效应,生菜的叶绿体吸收了硅量子点发射的蓝光用于光合作用,从而使生菜的干鲜重均得到了显著性提高。通过叶绿素荧光成像实验进一步验证了喷施荧光硅量子点叶面光肥时生菜的光合作用速率得到了提高。 | 潘晓琴 李常健 张浩然 郑胤建 董日月 李唯 宋世威 杨暹 刘应亮 雷炳富 | 2020 | 发光学报2020，41，7： | 2 |
| 5 | Function, energy and environment orientation in innovation research of rare earth materials显示文摘Rare earths(REs),as a kind of key elements widely used in high-tech industry,have been paid more and more attention all over the world.At a time when the world trade war is raging,dignitaries and executives are trying to control this strategic resource,while scientific and technological re-searchers are trying to solve the scientific and technological problems in the development of RE industry.The innovation research of RE materials are orientated by three main aspects as shown in Figure 1:one is to make the production process of RE materials more green and sustainable,the second is to strengthen the material properties and save energy,and the third is to find new functional materials with improved quality.. | ZHOU XueZhen LI HongYang LIU YanZhu LI YongXiu | 2019 | Science China(Technological Sciences)2019，62，12： | 0 |
您所在的机构暂未开通此部分的功能，请联系管理员