Perylene imide derivatives: Structural modification of imide position, aggregation caused quenching mechanism, light-conversion quality and photostability

Bridging of poly(acetylene)s and PEG-modified poly(olefin)s through ring-opening metathesis copolymerization (ROMCP)

“…Tuning the fluorescent properties of the PDI unit from ACQ to aggregation induced emission (AIE) has been typically achieved via molecular engineering of both the amide and bay functionality with bulky groups designed to control the π-π stacking and aggregation behavior. [55][56][57] Our tandem approach offers a versatile platform for accessing a range of tunable PEG 750 -incorporating chromophores within the non-conjugated polymer matrix, serving as a copolymer counterpart of the cyclopolymerization-derived conjugated poly(acetylene). Our findings demonstrate that tandem cyclopolymerization, followed by ROMP, yields copolymers with diverse properties and applications including electrical conductivity, bioimaging and photoluminescence.…”

Photosensitive Chitosan-Based Injectable Hydrogel Chemically Cross-Linked by Perylene Bisimide Dopamine with Robust Antioxidant and Cytotoxicity Enhancer Properties for In Vitro Photodynamic Therapy of Breast Cancer

“…Perylene diimide (PDI) derivatives exhibited tremendous potential as a PS in PDT applications due to their excellent thermal and photostability, high extinction coefficients, low dark toxicity, and significant singlet oxygen quantum yield. , Structurally, PDI is a rigid hydrophobic aromatic polycyclic molecule, and its π–π aggregation has limited its biological application. , Interestingly, by conjugating PDIs with biological molecules such as amino acids and short peptide sequences, soluble structures are created with unique optical, physicochemical, and structural properties, which could modulate the self-assembly of PDI for different biomedical applications. − Several groups have reported using conjugated PDI derivatives due to their stability, phototoxicity, and biocompatibility properties in PDT …”

ESIPT‐AIE Active Schiff Base Fluorescent Organic Nanoparticles Based on 2‐(2‐(4‐(4‐bromo Phenyl) Thiazol‐2‐yl)Vinyl)Phenol (BTVP) Utilized as a Multi‐Functional Fluorescent Probe

“…This limits their usefulness in applications such as living cell imaging or optoelectronic devices. [27][28][29] On the other hand, aggregation-induced emission (AIE) is the opposite phenomenon, where certain types of fluorophores called AIEgens are non-emissive or emit weak fluorescence in dilute solutions but emit strong fluorescence upon aggregation in solutions with poor solubility or in solid-state. [30][31][32] This property makes AIEgens very useful for applications with high fluorescence intensity in the aggregated or solid state, such as in fabricating organic light-emitting diodes (OLEDs) [33,34] or in the bioimaging of living cells.…”