高强度稀土纳米复合发光水凝胶中的级联能量传递  

Sequential Energy Transfer in Tough Nanocomposite Luminescent Hydrogel

作　　者：朱孔义 董宁宁 秦艳 李彬 李志强[2] ZHU Kong-yi;DONG Ning-ning;QIN Yan;LI Bin;LI Zhi-qiang(Inner Mongolia Yitai Petrochemical Co.,Ltd.,Erdos 010700,China;School of Chemical Engineering and Technology,Hebei University of Technology,Tianjin 300130,China)

机构地区：[1]内蒙古伊泰石化有限责任公司,内蒙古鄂尔多斯010700 [2]河北工业大学化工学院,天津300130

出　　处：《化学试剂》2022年第12期1756-1761,共6页Chemical Reagents

基　　金：国家自然科学基金资助项目(22171069,21871075)。

摘　　要：光捕获系统在自然光合作用和光电子器件中发挥着重要作用。制备具有多步连续能量转移特征,并能实现高效能量传递的光捕获材料对解决人类面临的能源问题和人工模拟光合作用都具有重要意义。水凝胶与生物体中的许多组织,如肌肉、软骨和皮肤等具有相似的结构,加之其良好的生物相容性,使得它比其他任何人工材料更接近于活体组织,是人造替代器官的理想材料。因此,水凝胶中的光捕获系统更加备受关注。通过将稀土配合物、N-异丙基丙烯酰胺(NIPA)、罗丹明B(RhB)和锂皂石纳米片原位共聚合构筑了高强度纳米复合发光水凝胶。该水凝胶实现了从天线分子到稀土再到RhB的级联能量传递。与目前被广泛报道的超分子凝胶能量传递体系相比,锂皂石和稀土配合物同时作为交联剂显著提高了水凝胶的机械强度,该策略有望为高强度光捕获凝胶体系的构筑提供一种通用方法。Light harvesting system plays an important role in photosynthesis and photoelectronic devices,thus,the preparation of light capture materials with efficient sequential energy transfer characteristics is of great significance for solving energy problems and artificial simulating photosynthesis.Hydrogels have similar structures to many tissues,such as muscle,cartilage,and skin,together with good biocompatibility,making them promising candidates for artificial organs.Therefore,light harvesting in hydrogels has attracted more attention.We reported the construction of nanocomposite luminescent hydrogel via in situ copolymerization of lanthanide complex,NIPA,rhodamine B,and laponite nanosheets.Sequential energy transfer from antenna molecule to lanthanide ion,and rhodamine B was observed.Both laponite nanosheets and lanthanide complex can crosslink the hydrogel network and thus significantly improve the mechanical strength of the obtained nanocomposite hydrogels.This strategy is expected to provide a general method for the construction of a light harvest system in the robust hydrogel.

关 键 词：稀土配合物 水凝胶 能量传递 锂皂石 荧光性能 

分 类 号：O64[理学—物理化学]