【摘要】：農(nóng)用薄膜在農(nóng)業(yè)生產(chǎn)中發(fā)揮著越來越重的作用,對其添加轉(zhuǎn)光劑使薄膜具有轉(zhuǎn)光作用可以顯著的提高農(nóng)作物對太陽光的利用率,增加農(nóng)產(chǎn)品產(chǎn)量。傳統(tǒng)的轉(zhuǎn)光劑主要包括有機染料類、稀土配合物類、無機鹽類等,這些傳統(tǒng)轉(zhuǎn)光劑在實際生產(chǎn)和應用中往往存在發(fā)光效率低下、易團聚、成膜困難、生產(chǎn)成本高等缺點。因此研制更加高效的轉(zhuǎn)光材料對高效利用光能至關重要。本文制備了三種新型轉(zhuǎn)光材料,并將其制備成膜,取得較為滿意的效果。(1)以熒光效應較強的稀土鋱為中心,選擇高分子長鏈聚乙丙交酯為第一配體,對水溶液中形成的配合物進行了研究。實驗確定了鋱、聚乙丙交酯以及甘氨酸為優(yōu)良協(xié)配體的最佳用量。進一步研究發(fā)現(xiàn),加入不同表面活性劑可以對配合物熒光強度產(chǎn)生增強的效果,其中十二烷基磺酸鈉效果最好;同時探究了酸堿性對體系熒光的影響。最終確定在pH為9的情況下,鋱:聚乙丙交酯:甘氨酸:十二烷基磺酸鈉為1:0.5:3:1時熒光效果最強。對于獲得的鋱-聚乙丙交酯-甘氨酸配合物,其熒光激發(fā)波長為249nm,發(fā)射波長為544 nm,將該配合物以摻雜法制備聚氯乙烯薄膜,得到的薄膜可將太陽光的紫外光轉(zhuǎn)化為作物光合作用需要的可見光。(2)選擇熒光效應較強的稀土元素銪為中心離子,以甲基苯駢三氮唑為第一配體,以鄰菲羅啉為協(xié)配體,對乙醇溶液中形成的配合物熒光進行了研究。試驗確定了銪、甲基苯駢三氮唑和鄰苯二甲酸癸酯的最佳體積配比。進一步研究發(fā)現(xiàn),加入表面活性劑十六烷基三甲基溴化銨會顯著的增強配合物的熒光。對于獲得的銪-甲基苯駢三氮唑-鄰苯二甲酸癸酯-十六烷基三甲基溴化銨配合物,將其摻雜到塑料薄膜中,并對薄膜熒光表征。得到熒光激發(fā)波長為350 nm,發(fā)射波長為613 nm,即得到可以使太陽光的紫外部分轉(zhuǎn)換為農(nóng)作物光合作用所需要的紅橙光的稀土光轉(zhuǎn)換膜。(3)選用熒光效應強的羅丹明B,以聚乙二醇1000為長鏈,通過酯化反應對其衍生,得到具有脂溶性長鏈的羅丹明B衍生物。并對獲得的衍生物進行紅外、熒光表征。對于獲得的羅丹明B衍生物,其熒光激發(fā)波長為568 nm,而發(fā)射波長為603 nm,將該衍生物以一定比例加到農(nóng)用塑料薄膜中,制備出可以使日光的黃綠光轉(zhuǎn)化為作物光合作用所需的紅橙光的有機光轉(zhuǎn)化膜。
[Abstract]:Agricultural film plays a more and more important role in agricultural production. Adding light conversion agent to the film can significantly improve the utilization ratio of agricultural crops to sunlight and increase the yield of agricultural products. The traditional transmitters mainly include organic dyes, rare earth complexes, inorganic salts and so on. These traditional transmitters often have the disadvantages of low luminous efficiency, easy agglomeration, difficult film formation and high production cost in practical production and application. Therefore, the development of more efficient light conversion materials is very important for the efficient use of light energy. In this paper, three new light conversion materials were prepared, and the films were prepared with satisfactory results. (1) with the rare earth terbium with strong fluorescence effect as the center, the polymer with long chain poly (ethylene lactide) as the first ligand was selected as the first ligand. The complex formed in aqueous solution was studied. The optimum dosage of terbium, poly (ethylene lactide) and glycine as excellent coligand was determined. It was found that the fluorescence intensity of the complex could be enhanced by adding different surfactants, and the effect of sodium dodecyl sulfonate was the best, and the effect of acid and alkalinity on the fluorescence of the system was also investigated. At pH 9, the fluorescence effect of terbium: poly (ethyllactide), glycine and sodium dodecyl sulfonate was 1: 0.5: 3: 1. For the terbium polyglycine complex, the fluorescence excitation wavelength and emission wavelength are 249 nm and 544 nm respectively. The film can convert UV light from solar light to visible light needed by crop photosynthesis. (2) Europium, a rare earth element with strong fluorescence effect, is selected as center ion, methyl benzotriazole as first ligand and o-phenanthroline as coligand. The fluorescence of complex formed in ethanol solution was studied. The optimum volume ratio of europium, methyl benzotriazole and decyl phthalate was determined. It was found that the addition of cetyltrimethylammonium bromide significantly enhanced the fluorescence of the complex. The complexes of europi-methyl benzotriazole-decyl phthalate and cetyltrimethylammonium bromide were doped into plastic film and characterized by fluorescence. The fluorescence excitation wavelength is 350 nm and the emission wavelength is 613 nm, that is, the rare earth light conversion film which can convert the ultraviolet part of the solar light into the red orange light needed for the photosynthesis of crops is obtained. (3) Rhodamine B with strong fluorescence effect is selected. Polyethylene glycol 1000 is a long chain, Rhodamine B derivatives with fat soluble long chain were obtained by esterification reaction. The obtained derivatives were characterized by IR and fluorescence. For the Rhodamine B derivative, the fluorescence excitation wavelength is 568 nm and the emission wavelength is 603 nm. An organic light conversion film was prepared, which can transform the yellowish green light from sunlight into the red orange light needed for crop photosynthesis.
【學位授予單位】：山東農(nóng)業(yè)大學
【學位級別】：碩士
【學位授予年份】：2016
【分類號】：O641.4

【參考文獻】

相關期刊論文 前10條

1 侯培毅;馬元寶;;農(nóng)用轉(zhuǎn)光棚膜的研究開發(fā)與利用[J];農(nóng)業(yè)與技術;2015年21期

2 陳桂香;尹桂波;陳和春;;新型轉(zhuǎn)光劑的合成與抗紫外研究[J];印染助劑;2014年12期

3 楊繼勉;郭秀蘭;徐莉;;稀土無機轉(zhuǎn)光材料聚合物改性及在農(nóng)膜方面應用進展[J];膠體與聚合物;2014年04期

4 Garrido-Hernández A;García-Murillo A;Carrillo-Romo F de J;Cruz-Santiago L A;Chadeyron G;Morales-Ramírez A de J;Velumani S;;Structural studies of BaTiO_3:Er~(3+) and BaTiO_3:Yb~(3+) powders synthesized by hydrothermal method[J];Journal of Rare Earths;2014年11期

5 高繼紅;楊天林;;酰胺型開鏈冠醚類稀土配合物的合成及其與DNA的作用研究[J];中國稀土學報;2014年04期

6 朱文慶;瞿芳;陳浩軍;李卓;劉斌;;Synthesis of SmOHCO_3 micro/nano particles from the coupling route of homogeneous precipitation with microemulsion[J];Journal of Rare Earths;2014年06期

7 朱維晃;袁博;楊瑞;;蒽醌類溶解有機質(zhì)和模擬太陽光耦合驅(qū)動下的Fenton法對羅丹明B脫色特征的影響因素研究[J];環(huán)境科學學報;2015年02期

8 陳和春;尹桂波;;雙元配體轉(zhuǎn)光劑的合成及其在防紫外線織物中的應用[J];紡織學報;2014年05期

9 王東新;郗曉云;李英奇;;稀土離子Tb~(3+)與阿霉素相互作用的光譜研究[J];山西醫(yī)科大學學報;2014年04期

10 M.Runowski;S.Balabhadra;S.Lis;;Nanosized complex fluorides based on Eu~(3+) doped Sr_2LnF_7(Ln=La, Gd)[J];Journal of Rare Earths;2014年03期

，

本文編號：2195806