一种新型稀土光转换剂的合成及其对烤烟光合作用的影响

Synthesis of a Novel Rare Earth Light Conversion Agent and its Effect on Photosynthesis of Tobacco

为提高农用塑料薄膜对光能的利用率,采用相转移催化法合成了2-辛基-1,3-二苯基-1,3-丙二酮及其Sm配合物(C1)———光转换剂,用IR、EA和1HNMR对C1进行了表征,并对C1与聚乙烯(PE)的相容性以及含C1的PE薄膜对烤烟品种K326、RG11和GB-1光合作用的影响进行了试验。结果表明,C1与PE具有较好的相容性;C1及其在PE薄膜中能在波长650nm处光致发光,该波长与植物光合作用所需的光波长643nm和660nm相近;在PE农膜中适量加入Cl可促进烟叶叶绿素的合成,从而提高了烤烟整体的光合效率。

In order to improve the utilization rate of light energy with agricultural plastic film, 2-octyl-1,(3-diphenyl-1,3-propandione) and its Sm complexes (C1) were synthesized by phase transfer catalysis. C1 was characterized by IR, EA and ~1H NMR. The compatibility between C1 and polyethylene (PE) and the effects of PE film containing C1 on the photosynthesis of some Virginia tobacco cultivars, such as K326?RG11 and GB-1, were tested. The results showed that: 1) C1 and PE showed relatively good compatibility while adding a long carbon chain compound; 2) C1 excitated by light of 391nm could emit 650nm light which was in the vicinity of the wavelengths, 643nm and 660nm, needed by plant photosynthesis; and 3) the photosynthetic rate of tobacco plant was improved as the chlorophyll synthesis in tobacco leaf was promoted by agricultural PE film incorporated with a right amount (of C1.)