Host-guest encapsulation of electron-rich naphthalene molecules into a weakly emissive porous metal-organic framework based on π-electron-deficient (π-acidic) diimide tectons leads to orange-emissive crystals, which can be used sense strongly basic organic amines in fast response, high photostability, and tunable sensitivity. Moreover, such host-guest inclusion crystals are also good photochromic probe for the detection N-methyl-2-pyrrolidone N,N-dimethylformamide molecules.

Multichromophoric macrocycles and cyclophanes are important supramolecular architectures for the elucidation of interchromophoric interactions originating from precise spatial organization. Herein, by combining an axially chiral binaphthol bisimide (BBI) a bay-substituted conformationally labile twisted perylene (PBI) within cyclophane well-defined geometry, we report PBI hetero-cyclophane (BBI-PBI) that shows intramolecular energy solvent-regulated chirality transfer BBI to subunit....

Abstract Organic scintillators, pivotal in security and medical applications, face challenges due to limited X‐ray absorption exciton utilization. Herein, a novel class of organic scintillators is introduced, named guest‐induced thermally activated delayed fluorescence (TADF) within supramolecular macrocycles via host‐guest through‐space charge transfer (TSCT). Four co‐crystals are obtained through orthogonal crystallizations involving calix[3]acridan (C[3]A) calix[3]phenothiazine (C[3]P) as...

Abstract Organic thermally activated delayed fluorescent (TADF) scintillators hold promising potential for applications in medical radiography and security detection, but the poor X‐ray absorption ability inferior radioluminescence (RL) hampered their progression. Herein, study has pioneered development of high‐performance TADF Ag(I)‐based from M 2 X (dppb) (M = Ag, Cu; Cl, Br, I) complexes with 1,2‐Bis(diphenylphosphino)benzene ligand. In comparison Cu(I) complexes, Ag(I) series generally...

Two organic halogen co-crystal scintillators with strong halogen-bond-induced charge-transfer interactions enable a fast response, low detection limit and ultra-high-resolution imaging.

Cuprous complex scintillators show promise for X-ray detection with abundant raw materials, diverse luminescent mechanisms, and adjustable structures. However, their synthesis typically requires a significant amount of organic solvents, which conflict green chemistry principles. Herein, we present the two high-performance cuprous using simple mechanochemical method first time, namely [CuI(PPh

Metal-free molecular perovskites have shown great potential for X-ray detection due to their tunable chemical structures, low toxicity, and excellent photophysical properties. However, limited absorption environmental instability restrict practical application. In this study, cesium-based (MDABCO-CsX3, X = Cl, Br, I) are developed by introducing Cs+ at the B-site enhance while retaining toxicity. The effects of halide modulation on physical properties device performance systematically...

Single crystal X-ray analysis reveals a flat perylene π-scaffold for bisimide bearing bulky 2,6-diphenylphenoxy substituents at the 1,7 bay positions. The structure provides sharp vibronic progressions in absorption and fluorescence spectra, sterical shielding outstanding quantum yields solid state.

To elucidate the impact of widely employed solubilizing phenoxy substituents on structural and functional properties perylene bisimide (PBI) dyes a series 1,7-diphenoxy-substituted PBIs was prepared from 1,7-dibromo PBI which exhibit hydrogen, methyl, isopropyl or phenyl at one both ortho positions substituents. Despite increasing sterical congestion high yields 74–88% could be obtained for all twofold aromatic nucleophilic substitution reactions. The optical in solution solid state were...

A panchromatic hybrid crystal of anionic iodoplumbate nanowires and J-aggregated protonated naphthalene diimides has been formed through charge-assisted anion–π lone pair–π interactions.

Four metal–organic coordination compounds Zn2(bcbp)Cl4 (1), Zn(bcbp)(PO3F) (2), [CdCl(Hbcbp)(bcbp)]·(ClO4)2 (3), and [Cd2(bcbp)4]·(ClO4)·F3 (4) (H2bcbp·2PF6 = 1,1′-bis(4-carboxyphenyl)-(4,4′-bipyridinium) hexafluorophosphate) have been synthesized via a solvothermal method structurally characterized. Compound 1 is 1D polymer, while compound 2 shows 2D + → 3D inclined polycatenation structure. In the case of 3, due to capped chlorine atoms uncoordinated carboxyl bcbp ligand, it exhibits...

A stable three-dimensional coordination polymer, [Eu3(bcbp)3(NO3)7(OH)2]n (1) (H2bcbp·2Cl = 1,1′-bis(4-carboxyphenyl)-(4,4′-bipyridinium) dichloride), was prepared by the solvothermal reaction of Eu(NO3)3·6H2O and H2bcbp·2Cl in methanol, which characterized infrared spectroscopy, single-crystal X-ray diffraction, powder thermogravimetric analyses. In solid state, 1 consists an unusual trinuclear Eu(III) unit (Eu3(CO2)6(NO3)7(OH), Eu3–SBU), further connects to six neighboring ones through...

Abstract Unprecedented neutral perylene‐3,4:9,10‐tetracarboxylic acid bisimide (PBI) radicals and biradicals were synthesized by facile chemical oxidation of 4‐hydroxyaryl‐substituted PBIs. Subsequent characterization optical magnetic spectroscopic techniques, as well quantum calculations, revealed an open‐shell singlet biradical ground state for the PBI OS ‐ 2 .. (〈s 〉=1.2191) with a relatively small singlet–triplet energy gap 0.041 eV large character y =0.72.

Photoexcited perylene diimide radical anions exhibit remarkable substituent-dependent photocatalytic activities towards the reduction of aryl halides, which are mainly controlled by their excited-state potentials and SOMO−1 energies.

Donor-acceptor (D-A) hybrid frameworks with visual X-ray photochromism at room temperature are fascinating because of their promising applications as detectors. Herein, a 3-fold interpenetrated D-A framework, [Eu(bcbp)1.5(DMF)(H2O)2][Co(CN)6]·4H2O·CH3OH (1), has been obtained by incorporating electron-rich Co(CN)63- into the electron-deficient europium viologen which interestingly exhibits ultraviolet and low-power dual remarkable color change from brown to green. Experimental theoretical...

Abstract Organic fluorescence scintillators, owing to the ultrafast response time, versatile chemical structures, low processing temperature, and cost, are considered as one of promising materials for medical diagnostics, radiation detection, X‐ray astronomy. However, radioluminescence (RL) intensity sensitivity hinder their practical applications. In this work, a highly efficient organic fluorescent scintillator, 4,4′‐bis(9‐carbazolyl)biphenyl (CBP), is presented, exhibiting high RL...

Organic scintillators with efficient X-ray excited luminescence are essential for medical diagnostics and security screening. However, achieving excellent organic scintillation materials is challenging due to low absorption coefficients inferior radioluminescence (RL) intensity. Herein, supramolecular interactions incorporated, particularly halogen bonding, into enhance their properties. By introducing heavy atoms (X = Cl, Br, I) 9,10-bis(4-pyridyl)anthracene (BPA), the formation of bonding...

Metal-ion-directed assembly of naphthalene diimide tectons cooperatively enhanced by anion-π interactions giant anions, PMo12O40(3-), leads to a novel organic-inorganic hybrid with ultrafast-responsive photochromic properties, which is attributed the polyoxometalate-sensitized photo-induced radical generation units.

Due to the different lone pair–π interactions between capped halogen atoms and electron-deficient naphthalene diimide moieties in three isostructural coordination networks, they exhibit electron-transfer photochromic behaviours upon irradiation.

Two semiconductive inorganic–organic hybrid coordination polymers constructed from metal iodide clusters and naphthalene diimide components have been synthesized, which exhibited different photo-induced electron-transfer properties.