Hydrogen-bonded supramolecular polymer networks for effective removal of perchlorate in water via clustered hydrogen-bonding.

Perchlorate is a toxic, explosive, and water-soluble pollutant but while efficient and low-cost removal of ClO from water is an important challenge, suitable methods for precipitation of ClO from water are underdeveloped. Here, we demonstrate a hydrogen-bonded supramolecular polymer network crystal (HBPC) for efficient complexation of ClO. The HBPC network is constructed by an A,A'-bis-pyridyl-hydrazone-phenyl conjugate-functionalized pillar[5]arene (PYP5), which self-assembles via the formation of clustered hydrogen-bonds.

Triarylboron-Doped Polymer Matrix Ultralong Room-Temperature Phosphorescent Materials for Advanced Multidimensional Information Encryption.

Constructing polymer-based ultralong organic room-temperature phosphorescence (UORTP) materials that exhibit time-dependent phosphorescent color variation holds profound significance. Triarylboranes, as a typical class of fluorophores, are widely used in the fabrication of various functional organic luminescent materials, and achieving UORTP materials from triarylboranes has become an important studied topic. In this study, a polymer-based UORTP material is fabricated by means of doping organic phosphor () composed of boronic acid-modified triarylborane unit into a poly(vinyl alcohol) (PVA) matrix, which is attributed to the hydrogen bonding between and PVA, effectively suppressing the nonradiative decay.

A Crystalline 3D Supramolecular Polymer Constructed by Clamparene-Based Controllable Self-Assembly and Its Application in Photothermal Conversion.

The development of well-defined three-dimensional supramolecular polymers presents significant challenges, particularly in achieving crystalline state structures. This study addresses this challenge by presenting the construction of a crystalline three-dimensional supramolecular polymer through the self-assembly of clamparene () and a naphthalene diimide derivative () in the solid state. The hierarchical self-assembly progresses from one-dimensional linear supramolecular polymers to two-dimensional supramolecular polymers and ultimately to a crystalline three-dimensional supramolecular polymer.

A Pillar[5]arene-Based π-Conjugated Organic Small Molecule Emitter: Synthesis, Self-Assembly, and Selective Sensing of CrO Anion.

A triphenylamine-containing π-conjugated pillar[5]arene luminescent small organic molecule has been synthesized via Suzuki-coupling reaction. This molecule can self-assemble to form linear supramolecular polymers in both solution and solid state. The molecule shows enhanced emission compared with parent pillar[5]arene in dilute solution.

A Temperature-Sensitive Fluorescent Supramolecular Polymer Constructed by Discrete Platinum(II) Metallacycle and Pillar[5]arene-Based Host-Guest Interactions.

The application of thermosensitive fluorescent supramolecular polymers in advanced optical materials, chemical sensors, artificial optical devices, and external stimulus responses remains underdeveloped. In this study, we introduced a novel method for constructing a mechanically interlocked fluorescent supramolecular polymer utilizing host-guest interactions, including C-H···π interactions and π-π stacking. This polymer exhibits outstanding temperature-sensitive fluorescence properties and is environmentally friendly due to its recyclability.

Clamparene: Synthesis, Structure, and Its Application in Spontaneous Formation of 3D Porous Crystals.

Macrocyclic arenes have emerged as pivotal scaffolds in supramolecular chemistry. Despite their significant contributions to molecular recognition and diverse applications, challenges persist in the development of macrocyclic arene-based crystalline materials, particularly in achieving porosity and addressing limitations in adsorption efficiency resulting from the small cavity sizes of existing macrocyclic arenes. In this study, we present the design and synthesis of a novel macrocyclic arene, clamparene (), featuring a rigid backbone, easy synthesis, and a sizable cavity.

A Two-Step Fluorescence-Resonance Energy Transfer System Constructed by Platinum(II) Metallacycle Based Molecular Recognition.

Considerable progress in the construction of efficient fluorescence-resonance energy transfer (FRET) systems has promoted the development of artificial energy transfer materials. However, despite recent advances, the exploration of efficient and easy strategies to fabricate novel supramolecular systems with FRET activities is still a challenge. Here, we report that a two-step FRET system was successfully achieved, driven by platinum metallacycle based host-guest interactions.

Platinum Metallacycle-Based Molecular Recognition: Establishment and Application in Spontaneous Formation of a [2]Rotaxane with Light-Harvesting Property.

Macrocyclic molecule-based host-guest systems, which provide contributions for the design and construction of functional supramolecular structures, have gained increasing attention in recent years. In particular, platinum(II) metallacycle-based host-guest systems provide opportunities for chemical scientists to prepare novel materials with various functions and structures due to the well-defined shapes and cavity sizes of platinum(II) metallacycles. However, the research on platinum(II) metallacycle-based host-guest systems has been given little attention.

Efficient detection of L-aspartic acid and L-glutamic acid by self-assembled fluorescent microparticles with AIE and FRET activities.

Amino acids play an important role in the formation of proteins, enzymes, hormones and peptides in animals. Moreover, aspartic acid and glutamic acid have a critical impact on the central nervous system as excitatory neurotransmitters. Here, we report the highly selective detection of L-glutamic acid (L-Glu) and L-aspartic acid (L-Asp) using fluorescent microparticles constructed by the combination of aggregation-induced emission and self-assembly-induced Förster resonance energy transfer.

Fluorinated leaning pillar[6]arene: synthesis, structure and selective iodide anion binding by anion-π interactions.

Anion recognition has continuously attracted significant attention due to its important role in environmental and biological sciences. Here, we have designed and synthesized an electron-deficient fluorinated leaning pillar[6]arene 1 that contains two tetrafluoro-benzene units. The electron-deficient fluorinated leaning pillar[6]arene 1 is capable of selectively recognizing iodide anions to form a host-guest complex with 1 : 1 stoichiometry driven by anion-π interactions.

An Organoplatinum(II) Metallacycle-Based Supramolecular Amphiphile and Its Application in Enzyme-Responsive Controlled Release.

Enzyme-responsive nanomaterials are emerging as important candidates for bioanalytical and biomedical applications due to their good biocompatibilities and sensitivities. However, the lack of promising operation platforms compatible with enzyme responsiveness greatly limits the scope and functionality of smart materials. Herein, we report the design and synthesis of a naphthalene-functionalized organoplatinum(II) metallacycle by means of coordination-driven self-assembly, which is subsequently exploited as the organometallic platform to enable enzyme-responsive supramolecular materials.

Detection of Aliphatic Aldehydes by a Pillar[5]arene-based Fluorescent Supramolecular Polymer with Vaporchromic Behavior.

The detection of volatile aliphatic aldehydes is of significance because of their chemical toxicity, physical volatility and widespread applications in chemical industrial processes. In this work, the direct detection of aliphatic aldehydes is tackled using a pillar[5]arene-based fluorescent supramolecular polymer with vaporchromic behavior. Thin films with strong orange-yellow fluorescence are prepared by coating the linear supramolecular polymer on glass sheets.

A rhodamine-based dual chemosensor for the naked-eye detection of Hg and enhancement of the fluorescence emission for Fe.

A novel fluorescent chemosensor based on trimesoyl chloride-rhodamine (TR) was successfully synthesized. Rising chromogenic and fluorogenic spectral enhancements could be observed in trimesoyl chloride-rhodamine (TR) probes when Hg and Fe were added, respectively. TR has shown selectivity for Hg and Fe with high sensitivity due to metal ion complexation induced photophysical "turn-on" signaling responses.

A fluorescent supramolecular gel and its application in the ultrasensitive detection of CN by anion-π interactions.

Supramolecular gels have been widely reported on account of their unique superiority and application prospects. In this work, we constructed a novel supramolecular gel (HD-G) by using hydroxy-naphthaldehyde decorated with naphthalimide in DMSO solution, which exhibited excellent selectivity and ultrasensitive sensing properties toward CN (the lowest detection limit is 1.82 × 10 M).

Tailoring an HSO anion hybrid receptor based on a phenazine derivative.

A catechol-functionalized phenazine imidazole (PD) was tailored with 2,3-diaminophenazine and 3,4-dihydroxy benzaldehyde, and it served as a hybrid acceptor for capturing HSO anions. The selectivity and sensitivity of the PD receptor for anion sensing were studied. It was found that the PD receptor could not only display a preferable sensitivity to HSO ions with a "turn-off" fluorescence response, but also have a strong anti-interference ability toward other common anions, especially basic anions such as CHCOO, HPO, and HPO.

Th tuned aggregation-induced emission: A novel strategy for sequential ultrasensitive detection and separation of Th and Hg.

A novel strategy, Th tuned aggregation-induced emission, for sequential ultrasensitive detection and separation of Th and Hg was developed successfully. For demonstration this strategy, we designed and synthesized two tripodal gelators TH (tri-(isoniazid-4-yl)-functionalized trimesic acylhydrazine) and TA (tri-(pyridine-4-yl)-functionalized trimesic amide). The TH and TA could assemble into a stable supramolecular polymer hydrogel THTA-G in DMSO/HO (3.

In Situ Generation of AgI Quantum Dots by the Confinement of A Supramolecular Polymer Network: A Novel Approach for Ultrasensitive Response.

A novel approach for in situ generation of AgI quantum dots by the confinement of a pillar[5]arene-based supramolecular polymer network has been successfully developed. The supramolecular polymer network (SPN-QP) was constructed by using a bis-8-hydroxyquinoline-modified pillar[5]arene derivative as a host (H-QP) and a bis-pyridinium-modified decane as guest (G-PD). The SPN-QP shows ultrasensitive response for Ag .

A novel pillar[5]arene-based supramolecular organic framework gel to achieve an ultrasensitive response by introducing the competition of cationπ and ππ interactions.

Ultrasensitive response properties are an intriguing concern for stimuli-responsive materials. Herein, we report a novel method to achieve an ultrasensitive response by introducing the competition of cationπ and ππ interactions into a pillar[5]arene-based supramolecular organic framework (SOF-AMP). SOF-AMP was constructed with a novel bis-naphthalimide functionalized pillar[5]arene, which was able to form a stable supramolecular gel (SOF-AMP-G) in cyclohexanol.

Competition of cation-π and exo-wall π-π interactions: a novel approach to achieve ultrasensitive response.

A novel approach to achieve ultrasensitive response was successfully developed by rationally introducing the competition between cation-π and exo-wall π-π interactions into a pillar[5]arene-based supramolecular organogel (P5N-OG). Interestingly, the P5N-OG could be used for ion detection and separation, fluorescent display materials as well as ultrasensitive logic gates.

The Antioxidant Inhibition of Clove Effective Fraction on Lipid, Protein and Spectra Variation of LDL.

Oxidation of low density lipoprotein (LDL) has been considered as the critical factor which led to atherosclerosis (AS). Lipid and protein in LDL were oxidized to cause change of spectra during oxidation. Clove has been demonstrated to possess the strongest antioxidant capacity among 87 both medical and edible plants proclaimed by China.

Phenazine-based colorimetric and fluorescent sensor for the selective detection of cyanides based on supramolecular self-assembly in aqueous solution.

Taking advantages of both the well-known phenazine structure and the mechanism of the supramolecular self-assembly and deprotonation process, the fluorescent and colorimetric sensor (ZL) was designed and synthesized, behaving as a circulation utilization (above 10 times) receptor for selective detection of cyanide anion (CN) in aqueous media. Upon the addition of CN, the sensor displayed obvious color changes from yellow to jacinth by naked eyes and the fluorescence immediately quenched (<10s). With respect to other common anions, the sensor possessed high selectivity and sensitivity (0.

A highly selective fluorescent chemosensor for iron ion based on 1H-imidazo [4,5-b] phenazine derivative.

Two kinds of fluorescent sensors (S and S1) for Fe(3+) bearing 1H-Imidazo [4,5-b] phenazine derivatives have been designed and synthesized. Between the two sensors, S showed excellent fluorescent specific selectivity and high sensitivity for Fe(3+) in DMSO solution. The test strip based on S was fabricated, which could act as a convenient and efficient Fe(3+) test kit.