Lanthanide complexes with aggregation-induced emission(AIE)integrate the unique photo-physical properties of lanthanide ions and the AIE features,making them applicable in diverse areas.However,the progress in this area has been rarely reviewed.Herein,we summarize the advance of AIE lanthanide complexes based on the number of lanthanide centers they contain,along with the mechanism and applications in the fields of stimulus-responsive and biological imaging.Meanwhile,the current challenges and the future research directions in this area are also briefly discussed.
Circularly polarized luminescence(CPL) materials exhibit significant potential in applications such as dynamically tunable helical structures and readily functionaliz able side chains, constitute an ideal platform for the construction of smart CPL materials. Precise control over their helical conformations and ordered self-assembly is essential for achieving high-performance CPL and functional integration. This article reviews the research progress of helical poly(3,5-disubstituted phenylacetylene) systems, with a particular emphasis on the mechanisms by which intramolecular interactions regulate helical conformations and enable reversible switching of circularly polarized and insights for establishing controllable construction routes from helical polymers to macroscopic chiral photonic functional materials. In addition, the applications of CPL-active poly(3, 5-disubstituted phenylacetylene)s in func & hybull;tional materials, such as chiral recognition and detection as well as mechanochromic fluorescence, are introduced.Finally, this article summarizes the challenges currently faced by this class of materials in terms of side-chain functional expansion, solid-state device fabrication, and comprehensive performance optimization, and offers perspectives on future development directions.
This review summarizes recent advances in unconventional hyperbranched luminescent polymers containing Si, P, and B. These luminescent polymers form three-dimensional hyperbranched topological structures through organic-inorganic hybrid units such as Si-O-C, P-O-C, and B-O-C. Internally enriched with heteroatoms bearing lone pairs(e.g., O, N, S), these heteroatoms spontaneously form clusteroluminogens through spatial n/pi interactions, multiple hydrogen-bond networks and nonmetallic coordination bonds. Exhibiting excellent biocompatibility, these luminescent materials demonstrate significant application potential in fields such as drug-controlled-release visualization, cellular bioimaging, and advanced information encryption. We focus on discussing the luminescence mechanism and structure-property relationships of this luminescent material, while identifying current challenges and future research directions.
The spatio-temporal analysis of organelles and their microenvironments is pivotal to understanding cellular life processes. Conventional fluorescent dyes suffer from limitations such as quenching at high concentrations and poor photostability, rendering them unsuitable for long-term, high signal-to-noise ratio live-cell imaging. Aggregation-induced emission(AIE) materials have emerged to address these challenges, demonstrating unique advantages. This paper systematically summarises design strategies for AIE molecular probes and their imaging reticulum, and Golgi apparatus. It identifies challenges in super-resolution imaging, molecular design of near-infrared AIE probes, cross-species imaging, logic response, and toxicity assessment, while outlining future directions for organelle imaging with AIE molecular probes.
Optical visualization provides a highly sensitive, non-invasive, and straightforward approach for the in situ monitoring of bulk polymerization processes. This paper synthesized a 9,14-diphenyl-9,14-dihydrodibenzo[a,c] phenazine(DPAC)-based molecule, whose distinct excited-state conformational responses under different micro-environments enabled the monitoring of microscopic dynamic changes within the system. During the polymerization of methyl methacrylate(MMA), the system transfer from a liquid monomer to a solid polymer. Accompanying this process, the fluorescence of DPAC shifts from red to blue, reflecting the increase in local viscosity and the restriction of molecular motion. Subsequently, the gradual enhancement of phosphorescence and the extension of its lifetime indicate the rising rigidity of the polymer network. Through dual-channel monitoring based on ratio-metric fluores & hybull; cence and phosphorescence, this strategy makes the visual tracking of bulk polymerization feasible.
