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.

为了探索用于农业薄膜的高效黄绿色光转换剂，制备了六个海湾取代的per二酰亚胺及其掺杂聚氯乙烯的薄膜（添加0.5％的重量）。掺杂发光剂的聚氯乙烯薄膜的最大吸收和发射峰分别位于581–609 nm和647–667 nm。更重要的是，掺杂薄膜中PTCDA，t-BuOPTCDA和m-MeOPTCDA的荧光量子产率分别高达0.88、0.84和0.78。增强的太阳辐射和室外暴露于太阳光分别持续了160分钟和2个月，掺杂m-MeOPTCDA的薄膜的发射强度出现了细微变化，并依次出现了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。为了更好地了解发光剂的光学特性，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。此外，通过优化m-MeOPTCDA和三苯基丙烯腈的比例，包含m-MeOPTCDA和三苯基丙烯腈的双层共挤出膜可成功实现双波段激发（350 nm和580 nm）和发射（430 nm和651 nm）。预计将有针对不同作物的特殊光转换膜。