This work reports on the structural and photophysical characterization of D4-symmetrical octanuclear circular LnIII helicates, [(R)- or (S)-iPr-Pybox]8(LnIII)8(THP)8 (where Ln = Eu Tb, THP trianionic tris-β-diketonate, iPr-Pybox chiral bis(4-isopropyl-2-oxazolinyl)pyridine). X-ray crystallographic analysis revealed that helicate possesses square antiprism architecture consists four (S)-iPr-Pybox]2LnIII2(THP)2 asymmetric units arranged in a closed ring form. Ligand-to-ligand interactions...

The optical property of an ionic metal nanocluster (NC) is affected by the interaction with counter ions. Here, we report that modification trianionic [Ag29(BDT)12(TPP)4]3- NC (BDT: 1.3-benzenedithiol; TPP: triphenylphosphine) silver(I) complexes led to intense photoluminescence (PL) in near-infrared (NIR) region. binding peripheral region Ag29 confirmed single-crystal X-ray diffraction (SCXRD) measurement, which further supported electrospray ionization mass spectrometry (ESI-MS) and...

Abstract A homoleptic zinc(II) helicate organized by a pair of achiral dipyrromethene ligands through coordination was synthesized to evaluate the chiroptical properties. This zinc complex showed strong exciton‐coupled responses from helical configuration with large absorption dissymmetry factor | g abs (up 0.20). More importantly, intense polarized luminescence in far‐red region (700–850 nm) fluorescence quantum yield Φ FL 0.23 observed for this lum 0.022, largest value among rare‐earth‐...

π-Electronic ion pairs are of interest for fabricating electronic materials that use intermolecular interactions based on electrostatic and dispersion forces, defined as iπ–iπ interactions, to provide dimension-controlled assemblies. Porphyrin ions, whose charge is delocalized in the core units, suitable ordered arrangement assemblies by pairing. Herein, charged porphyrins were found form solid-state solution-state stacked according peripheral electron-donating groups (EDGs)...

Nonlinear photochromic reactions that work with weak incoherent light are important for molecular operations high spatial resolution and multiple photofunctions based on single molecules. However, nonlinear compounds generally require complex design, restricting accessibility in various fields. Herein, we report properties a perylene-substituted rhodamine spirolactam derivative (Rh-Pe), which is synthesized from B facile procedures. Direct excitation of Rh-Pe produces the triplet excited...

The circularly polarized luminescence of a chiral europium(<sc>iii</sc>) (Eu^III) complex species has been successfully evaluated in an ensemble system.

Anion-responsive sign inversion of circularly polarized luminescence (CPL) was successfully achieved by N

Abstract Perfluoroalkyl substances (PFASs) and fluorinated polymers (FPs) have been extensively utilized in various industries, whereas their extremely high stability poses environmental persistence difficulty waste treatment. Current decomposition approaches of PFASs FPs typically require harsh conditions such as heating over 400 °C. Thus, there is a pressing need to develop new technique capable decomposing them under mild conditions. Here, we demonstrated that perfluorooctanesulfonate...

Perfluoroalkyl substances (PFASs) and fluorinated polymers (FPs) have been extensively utilized in various industries, whereas their extremely high stability poses environmental persistence waste treatment. Current decomposition approaches of PFASs FPs typically require harsh conditions such as heating over 400°C. Thus, there is a pressing need to develop new technique capable decomposing them under mild conditions. Here, we demonstrated that perfluorooctanesulfonate (PFOS), known...

Stepwise two-photon absorption processes have received considerable attention, especially in photocatalysis, due to their relatively lower power threshold, characteristic spatial selectivity, amplification of chemical reactions, and so on. Meanwhile, studies on the relaxation dynamics higher excited states condensed systems been limited for several molecular short-lived nature these states. In this study, we synthesized perylene-substituted perylene bisimide (PBI) its derivate as model...

Dithienylnitrophenols were synthesized as precursors of π-electronic anions, which stabilized by intramolecular chalcogen bonding, forming various ion pairs in combination with cations. The modes solid-state charge-by-charge assemblies, along solution-state stacking and photoinduced electron transfer behaviors, modulated the constituent ionic species.

We report on the design and synthesis of triscyclometalated iridium (Ir) complexes that contain aryloxy groups at end diamino linkers, which exhibit an extraordinarily long-emission lifetime, were prepared by regioselective substitution reactions fac-tris-homoleptic cyclometalated Ir complexes, fac-Ir(tpy)3 (tpy = 2-(4′-tolyl)pyridine). It was found Ir(tpy)3 complex, equipped with approximately one to six 6-N,N-dimethylamino-2-naphthoic acid (DMANA) through appropriate alkyl exhibited...

Nine nona-coordinated Eu(III) complexes (1–9) studied here have three unsymmetric β-diketonate ligands and one chiral Ph-Pybox ligand, which can produce eight possible coordination isomers, depending on the position of ligands. Substituents cause a rational structural rearrangement upon crystallization. with higher polarity, including −CN, −F, −Cl, −Br, −OMe, −OEt, employ intercomplex hydrogen bonding to generate an association complex through lower −CF3, −SMe, −Me, most energetically...

Time-dependent dual photopatterning using an induction period in photochromic reactions was achieved a supramolecular gel medium.

Organic ligands on the surface of nanocrystals (NCs) are extremely important in influencing various physical properties, such as dispersibility, electrical and optical properties. Recent studies have revealed that a slight difference molecular structure aliphatic organic significantly affects dispersibility NCs. On other hand, effects excited-state dynamics NCs remain elusive. In this study, we synthesized series colloidal ZnO capped with different alkyl phosphonic acids investigated their...

Perfluoroalkyl substances (PFASs) have been extensively utilized in various industries. However, their extremely high stability poses significant challenges, such as environmental persistence and waste treatment. Current PFAS decomposition approaches typically require harsh conditions. Thus, there is a pressing need to develop new technique capable of decomposing them under mild Here, we showcase method wherein perfluorooctanesulfonate, known "persistent chemical," Nafion, widely sulfonated...

Long-range chirality recognition between the two chiral guest ligands can be tuned based on helix distances (<italic>d</italic>_Ln–Ln = 11.5 and 14.0 Å) of bis-diketonate bridged dinuclear lanthanide complexes (<bold>2Th</bold> <bold>3Th</bold>, respectively).

We demonstrate that the phenoxyl-imidazolyl radical complex (PIC), which is a rate-tunable fast photoswitch, can be used as ligand directly coordinates with iridium ( iii ) ions.

This work demonstrated that the ligand symmetry of europium(iii) complexes controls ratiometric luminescence characteristics lanthanides. Nona-coordinated having unsymmetrical β-diketonate ligands (Cs) exhibit distinctive spectral variations in extremely narrow f-f transition bands over temperature range from 253 to 323 K. In contrast, no such change can be observed a series nona-coordinated containing symmetrical (C2v). The remarkable difference depending on (Csvs. C2v) suggests...

Porphyrin ion pairs, the charge of which is delocalized in core units, form tightly associated structures through i π-i π interactions. 5,10,15-Triphenyl-substituted porphyrin-AuIII complex, favorable for forming stacked a stable ion, has been synthesized. Ion-pair metathesis based on hard and soft acids bases theory enabled combination with porphyrin anions possessing electronic states controlled by electron-donating electron-withdrawing groups. Transient absorption spectroscopy suggested...

Photochromic reactions of the phenoxyl-imidazolyl radical complex (PIC), which is one rate-tunable fast T-type photoswitches, dramatically change by introduction bulky substituents around photochromic units. While these are expected to affect initial bond dissociation processes, they have not been elucidated yet. Here, we revealed ultrafast processes PIC derivatives with different subpicosecond nanosecond transient absorption spectroscopy. We that units decelerate whereas largely accelerate...

Abstract Nonlinear photochromic reactions that work with weak incoherent light are important for molecular operations high spatial resolution and multiple photofunctions based on single molecules. However, nonlinear compounds generally require complex design, restricting accessibility in various fields. Herein, we report properties a perylene‐substituted rhodamine spirolactam derivative (Rh−Pe), which is synthesized from B facile procedures. Direct excitation of Rh−Pe produces the triplet...

We herein report photodoping and thereby photochromism of semiconductor nanocrystals under air in a temperature-responsive supramolecular gel its back reactions induced by direct heating or near-infrared photothermal conversion. also present their application to the spatiotemporal patterning photoluminescence.