(Small) Amphiphilicity-Controlled Polychromatic Emissive Supramolecular Self-Assemblies for Highly Sensitive and Efficient Artificial Light-Harvesting Systems
作者：Chen, X.; Cao, K.; Bisoyi, H. K.; Zhang, S.; Qian, N.; Guo, L.; Guo, D.*; Yang, H.*; Li, Q.*
關鍵字：Supramolecular Self-Assembly
論文來源：期刊
具體來源：Small, 2022, 18, 2204360.
發表時間：2022年
Dynamic sequential control of photoluminescence by supramolecular
approaches has become a great issue in supramolecular chemistry. However,
developing a systematic strategy to construct polychromatic photoluminescent
supramolecular self-assemblies for improving the efficiency and
sensitivity of artificial light-harvesting systems still remains a challenge.
Here, a series of amphiphilicity-controlled supramolecular self-assemblies
with polychromatic fluorescence based on lower-rim hexyl-modified sulfonatocalix[
4]arene (SC4A6) and N-alkyl-modified p-phenylene divinylpyridiniums
(PVPn, n = 2–7) as efficient light-harvesting platforms is reported.
PVPn shows wide ranges of polychromatic fluorescence by co-assembling
with SC4A6, whose emission trends significantly depend on the modified
alkyl-chains of PVPn. The formed PVPn-SC4A6 co-assemblies as light-harvesting
platforms are extremely sensitive for transferring the energy to two
near-infrared emissive acceptors, Nile blue (NiB) and Rhodamine 800. After
optimizing the amphiphilicity of PVPn-SC4A6 systems, the PVPn-SC4A6-NiB
light-harvesting systems achieve an ultrasensitive working concentration
for NiB (2 nm) and an ultrahigh antenna effect up to 91.0. Furthermore, the
two different kinds of light-harvesting nanoparticles exhibit good performance
on near-infrared imaging in the Golgi apparatus and mitochondria,
respectively.