Exploration of highly efficient light conversion agents for agricultural film based on the bay-substituted perylene diimides derivatives
Exploration of highly efficient light conversion agents for agricultural film based on the bay-substituted perylene diimides derivatives
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基于湾取代苝二酰亚胺衍生物的高效农膜光转换剂的探索
DOI：
10.1016/j.dyepig.2018.07.015
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发表时间：
2018
影响因子：
4.5
通讯作者：
Liu Xiaohong
中科院分区：
文献类型：
--
作者：
Yu Yongjiang;Wang Yongtao;Liu Wenjing;Jia Xin;Ma Lei;Ren Litong;Xue Mei;Liu Xiaohong
为探索农用薄膜用高效黄绿光转换剂，制备了6种月桂基取代的苝酰亚胺及其掺杂聚氯乙烯薄膜（质量添加量为0.5%）。发光体掺杂聚氯乙烯薄膜的最大吸收峰和发射峰分别位于581-609 nm和647-667 nm。更重要的是，在掺杂膜中，PTCDA、t-BuOPTCDA和m-MeOPTCDA的荧光量子产率分别高达0.88、0.84和0.78。太阳辐射增强和户外暴露分别持续160 min和2个月，m-MeOPTCDA掺杂薄膜的发光强度依次出现轻微变化和9%的波动。综合透射率、相容性、机械性能和热稳定性，m-MeOPTCDA被选为最有效的光转换材料。为了更好地理解发光体的光学性质，通过理论计算完成了分子构型优化、电子云密度分布和分子轨道能级。同时，m-MeOPTCDA和三苯基丙烯腈共挤薄膜在350 nm和580 nm的双波段激发和430 nm和651 nm的双波段发射上取得了成功，通过优化m-MeOPTCDA和三苯基丙烯腈的配比，有望得到适合不同作物的转光薄膜。
To explore highly efficient yellow-green light conversion agents used for agricultural film, six bay-substituted perylene diimides and their polyvinyl chloride doped films (by 0.5% weight addition) were prepared. The maximum absorption and emission peaks of the luminogens-doped polyvinyl chloride films are located at 581–609 nm and 647–667 nm, respectively. More importantly, the fluorescence quantum yields of PTCDA, t-BuOPTCDA and m-MeOPTCDA are up to 0.88, 0.84 and 0.78 in doping film, respectively. The strengthening solar radiation and outdoor exposure to sunlight last 160 min and two months respectively and the emission intensity of m-MeOPTCDA-doped film displays slight changes and 9% fluctuation in turn. Combined transmittance, compatibility, mechanical properties and thermal stability, m-MeOPTCDA is chosen as the best effective light conversion materials. To better understand the optical properties of the luminogens, molecular configuration optimization, electron cloud density distribution and molecular orbital energy levels were completed by theoretical calculation. Further, the double layer coextrusion film containing m-MeOPTCDA and Triphenyl acrylonitrile is succeed in dual band excitation(350 nm and 580 nm)and emission (430 nm and 651 nm), by optimizing the proportion of m-MeOPTCDA and Triphenyl acrylonitrile, the special light conversion films for different crops will be expected.