Zhang Qiaona, Cui Fengyao, Dang Xiaoman, Wang Qi, Li Zheng-Yi, Sun Xiao-Qiang, Xiao Tangxin
School of Petrochemical Engineering, Changzhou University, Changzhou, 213164, China.
State Key Laboratory for Organic Electronics and Information Displays & Institute of Advanced Materials (IAM), Nanjing University of Posts & Telecommunications, Nanjing, 210023, China.
Chemistry. 2024 Jul 19;30(41):e202401426. doi: 10.1002/chem.202401426. Epub 2024 Jun 25.
The fabrication of supramolecular light-harvesting systems (LHS) with sequential energy transfer is of significance in utilizing light energy. In this study, we report the non-covalent self-assembly of a sequential LHS by pillar[5]arene-based host-guest interaction in water and its applications in white light-emitting diode (LED) device and latent fingerprint imaging. The host-guest complex WP5 G self-assembles into nanoparticles in water and shows enhanced aggregation-induced emission (AIE) effect. The nanoparticles can be further used to construct sequential LHS with fluorescent dyes 4,7-di(2-thienyl)-benzo[2,1,3]thiadiazole (DBT) and sulforhodamine 101 (SR101). Impressively, the system shows white-light emission when the molar ratio of WP5 G/DBT/SR101 is 1100/2/16. The material can be coated on a LED bulb to achieve white-light emission. In addition, the sequential LHS exhibit multicolor fluorescence including red emission, which have been successfully applied to high-resolution imaging of latent fingerprints. Therefore, we demonstrated a general strategy for the construction of sequential LHS in water based on macrocyclic host-guest interaction and explored its multi-functional applications in white-light LED device and imaging of latent fingerprints, which will promote future development and application of supramolecular LHSs.
构建具有顺序能量转移的超分子光捕获系统（LHS）对于光能利用具有重要意义。在本研究中，我们报道了基于柱[5]芳烃主客体相互作用在水中非共价自组装的顺序LHS及其在白光发光二极管（LED）器件和潜指纹成像中的应用。主客体复合物WP5·G在水中自组装成纳米颗粒，并表现出增强的聚集诱导发光（AIE）效应。这些纳米颗粒可进一步用于与荧光染料4,7-二（2-噻吩基）-苯并[2,1,3]噻二唑（DBT）和磺基罗丹明101（SR101）构建顺序LHS。令人印象深刻的是，当WP5·G/DBT/SR101的摩尔比为1100/2/16时，该系统呈现白光发射。该材料可涂覆在LED灯泡上以实现白光发射。此外，顺序LHS表现出包括红色发射在内的多色荧光，已成功应用于潜指纹的高分辨率成像。因此，我们展示了一种基于大环主客体相互作用在水中构建顺序LHS的通用策略，并探索了其在白光LED器件和潜指纹成像中的多功能应用，这将推动超分子LHS的未来发展和应用。
