Abstract：
Making full use of the captured energy by phosphorescence light-harvesting systems (PLHSs) and the tunable photoluminescence in energy transfer process to realize the multiple applications is still the challenge of PLHSs research. In this study, we have successfully constructed a highly effective PLHS with tunable multicolor luminescence and efficient conversion of photosensitizer types, which can further be used in photocatalytic organic conversion, information anti-counterfeiting and storage. The supramolecular polymer of BDBP-CB[8], which is generated by cucurbit[8]uril (CB[8]) and 4-(4-bromophenyl)-pyridine derivative (BDBP), realizes a phosphorescence emission and a change in luminescence color. Notably, white light emission was achieved and the logic gate systems were constructed utilizing the application of adjustable luminescence color. More interestingly, PLHS can be constructed by employing BDBP-CB[8] as energy donors, Sulforhodamine 101 (SR101) and Cyanine5 (Cy5) as energy acceptors, which results in a remarkably tunable multicolor photoluminescence to achieve the information storage. Furthermore, we have also found that BDBP-CB[8] can serve as type II photosensitizer for the effective production of singlet oxygen (1O2) during the photooxidation process of styrene in aqueous environments, attaining a remarkable output rate reaching as high as 89 %. Particularly, compared with 1O2 produced by type II photosensitizer BDBP-CB[8], the construction of PLHS can effectively convert type II photosensitizer to type I photosensitizer and efficiently generate superoxide anion radical (O2•-), which can be used for photocatalytic cross-dehydrogenative coupling (CDC) reaction in the aqueous solution with a yield of 90 %. Thus, we have created a PLHS that not only achieves tunable multicolor emission for information anti-counterfeiting and storage, but also realizes the conversion of reactive oxygen species (ROS) for different types photocatalytic oxidation reactions.
摘要：
充分利用磷光光捕获系统(PLHSs)捕获的能量和能量转移过程中的可调谐光致发光来实现多种应用仍然是PLHSs研究的挑战。在这项研究中,我们已经成功地构建了一个具有可调多色发光和光敏剂类型的高效转换的高效PLHS，可进一步用于光催化有机转化，信息防伪和存储。BDBP-CB的超分子聚合物[8]，由葫芦[8]脲（CB[8]）和4-（4-溴苯基）-吡啶衍生物（BDBP）产生，实现磷光发射和发光颜色的变化。值得注意的是,实现了白光发射，并利用可调发光颜色的应用构建了逻辑门系统。更有趣的是，PLHS可以通过采用BDBP-CB[8]作为能量供体来构建，磺酰罗丹明101（SR101）和Cyanine5（Cy5）作为能量受体，这导致了显著可调的多色光致发光来实现信息存储。此外，我们还发现，BDBP-CB[8]可以作为II型光敏剂，用于在水性环境中苯乙烯的光氧化过程中有效产生单线态氧（1O2），实现了高达89%的显著产出率。特别是,与II型光敏剂BDBP-CB产生的1O2相比[8]，PLHS的构建可以有效地将II型光敏剂转化为I型光敏剂，并有效地产生超氧阴离子自由基（O2•-），可用于水溶液中的光催化交叉脱氢偶联（CDC）反应，收率为90％。因此，我们创造了一个PLHS，不仅实现了信息防伪和存储的可调多色发射，而且还实现了不同类型光催化氧化反应的活性氧（ROS）的转化。
