Photoresponsive polymers based on a coumarin moiety for the controlled release of pesticide 2,4-D
作者:Sanghamitra Atta、Amrita Paul、Rakesh Banerjee、Manoranjan Bera、Mohammed Ikbal、Dibakar Dhara、N. D. Pradeep Singh
DOI:10.1039/c5ra18944f
日期:——
excellent photoresponsive controlled release formulation based on a coumarin copolymer for pesticide 2,4-D. In the present work, acrylate and polyethylene glycol (PEG) based coumarin photoresponsive polymers were synthesised. The newly synthesised coumarin based polymers exhibited dual functionalities, namely as “fluorophores” and “phototriggers” for the controlled release of pesticide 2,4-D. The fluorescence
我们报告了一种基于香豆素共聚物的农药2,4-D的优秀光响应控释制剂。在本工作中,合成了基于丙烯酸酯和聚乙二醇(PEG)的香豆素光敏聚合物。新合成的香豆素基聚合物表现出双重功能,即“荧光团”和“光引发剂”,可控制农药2,4-D的释放。香豆素基聚合物的荧光性质帮助我们监测了聚合物配方中2,4-D的释放。香豆素类聚合物在紫外光照射下可释放农药。TGA结果表明,与游离农药2,4-D相比,香豆素聚合物包封的农药具有良好的热稳定性。进一步的浸出实验还表明,与游离农药2,4-D相比,聚合物包封的农药浸出缓慢。植物中的生物测定研究表明,香豆素聚合物包裹的农药有效地将2,4-D传递到了植物组织(南瓜类植物)中。西葫芦)改善其除草活性。我们的结果表明,基于荧光香豆素聚合物的递送装置用于通过光控制农药的释放对于现场应用具有极大的兴趣。