Herein, we designed and synthesized water-soluble coumarin-12-crown-4 (C12C4) which can be encapsulated by γ-cyclodextrin (γ-CD) with 2:1 ratio forming psuedorotaxane, accompanying the morphology from nanotubes to regular nanosheets with a range of edge lengths (2–10 μm) and a range of thicknesses (200–500 nm). With α-CD, β-CD as references, the encapsulation by γ-CD could promote the photodimerization process of C12C4 after irradiation with 365 nm light. Meanwhile, the morphology of pseudorotaxane C12C4⊂γ-CD changed into a chapped surface. By virtue of this, the pseudorotaxane C12C4⊂γ-CD was doped into poly (vinyl alcohol) (PVA) and a phosphorescence emission at 515 nm (τ = 458.80 ms) appeared and showed green afterglow for 3 s. Further doping commercial dye rhodamine B (RhB) into C12C4⊂γ-CD@PVA, a highly efficient triplet-to-singlet Förster-resonance energy transfer (TS-FRET) system was obtained with multicolor afterglows. More interestingly, both the phosphorescence of C12C4⊂γ-CD@PVA and the delayed fluorescence of C12C4⊂γ-CD + RhB@PVA could be tuned by 365 nm light irradiation. Finally, the photo-controlled phosphorescence smart materials were used to constructed INHIBIT logic gate, logic operation of INHIBIT + AND and time resolved anti-counterfeiting.

中文翻译：

---

基于 γ-环糊精加速香豆素-12-冠-4 光二聚化的光可调磷光能量转移


在此，我们设计并合成了水溶性香豆素-12-冠-4 （C12C4），它可以被 γ-环糊精 （γ-CD） 封装，以 2：1 的比例形成伪嗜酸性紫杉烷，伴随着从纳米管到具有一系列边缘长度 （2-10 μm） 和一系列厚度 （200-500 nm） 的常规纳米片的形态。以 α-CD、β-CD 为参考，γ-CD 封装可促进 C12C4 在 365 nm 光照射后的光二聚化过程。同时，伪轮烷 C12C4⊂γ-CD 的形态转变为干裂表面。因此，将伪轮烷 C12C4⊂γ-CD 掺杂到聚乙烯醇 （PVA） 中，在 515 nm 处 （τ = 458.80 ms） 出现磷光发射，并显示出持续 3 s 的绿色余辉。进一步将商业染料罗丹明 B （RhB） 掺杂到 C12C4⊂γ-CD@PVA 中，获得了具有多色余辉的高效三重态到单重态 Förster 共振能量转移 （TS-FRET） 系统。更有趣的是，C12C4⊂γ-CD@PVA 的磷光和 C12C4⊂γ-CD + RhB@PVA 的延迟荧光都可以通过 365 nm 光照射进行调节。最后，采用光控磷光智能材料构建 INHIBIT 逻辑门、INHIBIT + AND 逻辑运算和时间分辨防伪。