固态上转换材料制备及其性能研究

Study on Preparation and Properties of Solid Upconversion Materials

摘要:

摘要：有机上转换（UC）是一种通过双光子机制将低能量（长波长）的光转换为高本文尝试选择固态聚合物聚二甲基硅氧烷（PDMS）为基质，将光敏剂四苯基卟啉钯（PdTPP）和发光剂9,10-二苯基蒽（DPA）分散其中，制得了固态上转换材料（PdTPP/DPA/PDMS），有效隔绝了空气中的氧气对光敏剂与发光剂三线态的淬灭，在空气气氛中固态上转换的稳定时间可延长至10 h以上；更重要的是，其上转换效率（uc）最高可达26.3%，这是目前文献报道的最高值。

Abstract:

Abstract：Solid upconversion materials were prepared by using polydimethylsiloxane (PDMS) as polymer matrix to soak PdTPP (sensitizer) and DPA (emitter), the resulting solid upconversion system (PdTPP/DPA/PDMS) can prevent triplet-states of both sensitizer and emitter from quenching by oxygen, which can maintain stability for more than 10 h in the air. More importantly, PDMS can effectively enhance upconversion efficiency (UC) as high as 26.3%, which was the highest value in the reported literatures.