writer：Chen, X.; Cao, K.; Bisoyi, H. K.; Zhang, S.; Qian, N.; Guo, L.; Guo, D.*; Yang, H.*; Li, Q.*
keywords：Supramolecular Self-Assembly
source：期刊
specific source：Small, 2022, 18, 2204360.
Issue time：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.