Abstract The development of new strategies to construct on-demand porous lattice frameworks from simple motifs is desirable. However, mitigating complexity while combing multiplicity and reversibility in the architectures a challenging task. Herein, based on synergy dynamic intermolecular interactions flexible molecular conformation cyano-modified tetraphenylethylene tecton, eleven kinetic-stable hydrogen-bonded organic (HOFs) with various shapes two thermo-stable non-porous structures rare...

While monoradical emitters have emerged as a new route toward efficient organic light-emitting diodes, the luminescence property of diradicaloids is still scarcely explored. Herein, by devising novel radical–radical coupling-based synthetic approach, we report class sulfone-functionalized Chichibabin's hydrocarbon derivatives, SD-1–3, featuring varied substituent patterns and moderate to high diradical characters 0.44–0.70, highly stable with rarely seen NIR emission beyond 900 nm. Via...

Abstract Multidrug‐resistant (MDR) bacteria pose serious threats to public health as there is currently a lack of effective and biocompatible drugs kill MDR bacteria. Here, bifunctional aggregation‐induced emission luminogen (AIEgen), triphenylethylene‐naphthalimide triazole (TriPE‐NT), reported, which capable both staining killing Gram‐positive (G+) Gram‐negative (G−) The intrinsic fluorescence generating ability the TriPE unit enables TriPE‐NT monitor drug–bacteria interactions, meanwhile,...

The reactivities of enamines and predistorted (strained) dipolarophiles toward perfluoroaryl azides (PFAAs) were explored experimentally computationally. Kinetic analyses indicate that PFAAs undergo (3 + 2) cycloadditions with up to 4 orders magnitude faster than phenyl azide reacts these dipolarophiles. DFT calculations used identify the origin this rate acceleration. Orbital interactions between cycloaddends are larger due relatively low-lying LUMO PFAAs. triazolines resulting from...

Significance The work described represents a strategy in the design and development of theranostic pure nanodrugs for combating drug-resistant bacteria. significance this includes: ( i ) modular synthetic preparation ciprofloxacin derivatives high yields one step at room temperature without any catalysts; ii stable nanoaggregates, prepared following principle aggregation-induced emission, successfully used as fluorescent organic dots to image bacteria; iii formulation that showed...

Silver staining, which exploits the special bioaffinity and chromogenic reduction of silver ions, is an indispensable visualization method in biology. It a most popular for in-gel protein detection. However, it limited by run-to-run variability, background inability quantification, compatibility with mass spectroscopic (MS) analysis; limitations that are largely attributed to tricky visualization. Herein, we reported novel water-soluble fluorogenic Ag+ probe, sensing mechanism based on...

Many aggregation-induced emission (AIE) materials are featured by the diphenylethene (DPE) moiety which exhibits rich photophysical and photochemical activities. The understanding of these activities behind AIE is essential to guide design fluorescent with improved performance. Herein fusing a flexible DPE rigid spiro scaffold, we report class novel deep-blue material solid-state quantum yield (ΦF) up 99.8%. Along phenomenon, identified reversible photocyclization (PC) on visible chromism,...

Abstract A “turn‐on” fluorescent sensing strategy was developed for ultrasensitive detection of heavy metal mercury ion (Hg 2+ ) directly in water. It utilized an aqueous soluble aggregation‐induced emission (AIE)‐active probe, named 1,1,2,2‐tetrakis(4‐(1H‐tetrazol‐5‐yl)phenyl)ethene (TPE‐4TA), composing a luminescent tetraphenylene core and multiple anionic tetrazolate spawns. The probe retained dark when molecularly dissolved However, ions can ligate with groups to form infinite...

The electronic structure of nanographene fragments (NGs) is closely related to heteroatom-doping, which a continuous research hotspot in the fields organic electronics and spintronics materials. Without altering number π-electrons aromaticity, "pyridinic" nitrogen-doping can finely tune π-electronic NGs, thus manipulating optical, electronic, magnetic properties as well assembly patterns. However, exact influence pyridinic N-doping on these features has been still ambiguous due lack...

The analysis of albumin has clinical significance in diagnostic tests and obvious value to research studies on the albumin-mediated drug delivery therapeutics. present immunoassay, instrumental techniques, colorimetric methods for detection are either expensive, troublesome, or insensitive. Herein, a class water-soluble tetrazolate-functionalized derivatives with aggregation-induced emission (AIE) characteristics is introduced as novel fluorescent probes detection. They can be selectively...

Extension of oxygen-embedded polycyclic aromatic hydrocarbons (PAHs), in particular with a defined topology, is synthetically challenging primarily because limited regio-specific methods and poor solubility PAHs. We reported herein an efficient way to construct quinoidal pentacenes nonacenes regular zigzag O-inserted edges. These O-embedded backbones composed benzene, pyranyl, cyclohexa-1,4-diene moieties provided access new class longitudinally conjugated acenes superior stability. Their...

PtS2, a group-10 transition metal dichalcogenide, has prominent layer-depended band structure, and can enable extremely high phonon-limited mobility at room temperature. Here, we demonstrate the theoretical study on electronic structures of PtS2 with different thickness by using density functional theory (DFT), as well experimental realization large-area synthesis few-layer film direct sulfurization pre-deposited Pt. The synthetic process suggested that reaction pressure is key factor in...

Aryl amides are efficiently synthesized from the rearrangement of triazolines, which formed in base-catalyzed azide–aldehyde cycloaddtion.

Multistimuli-responsive enaminitrile-based configurational switches displaying aggregation-induced emission (AIE), fluorescence turn-on effects, and supergelation properties are presented. The E-isomers dominated (>97%) in neutral/basic solution, the structures underwent precisely controlled switching around enamine C═C bond upon addition of acid/base. Specific output was observed response to different external input solution solid states. In H+, resulted complete formation nonemissive...

Abstract We report an anti ‐folded bowl‐shaped bisdibenzocorannulene ( BDBC ) featuring a new chair‐cyclohexane‐like hexagon as bridge of two dibenzocorannulene moieties. The neutral compound showed multiple redox‐active properties and could be converted to the corresponding redox states through chemical reduction or oxidation. Chemical by stoichiometric addition metallic potassium in presence [18]crown‐6 ether, provided radical anion .− dianion 2− , respectively; while oxidation silver...

Here we report stepwise solution-synthesis of linear nonalternant nanoribbons (NNRs), featuring pentagonal rings peri-fused onto the repeating perylene unit. The X-ray single-crystal structures demonstrated their π-backbones as a twisted ribbon, with longest crystalline length nanoribbon up to 3.9 nm. NNRs exhibited an orange deep-red photoluminescence even under room light, absolute ΦF 82 %, most likely due ring-strain induced molecular stiffness. Benefiting from enlarged size and...

Abstract Dynamic materials undergoing adaptive solid‐state transitions are attractive for soft mechanics and information technology. Here, we report a novel porous framework system based on macrocyclic trimers assembled from open‐shell tetraarylethylene building blocks with aryldicyanomethyl radicals as coupling linkers. Under mechanical, thermal, or chemical stimuli, the showed adaptability by activating conformational dynamics radical‐based transformations, thus displaying macroscopic...

The stable radical cation of large aromatic hydrocarbons remains a challenge, due to the recessive character and high reactivity. Here we report design, synthesis, characterization new π-radical cations from one π-electron oxidation bay-twisted dibenzoperopyrene derivatives. Experimental observations theoretical calculations revealed that these had significant resonance hybrid structures, advantageous spin- charge-delocalizations over molecular backbones emerging global aromaticity in...

Sensitive and portable quantification of biomarkers has particular significance in the monitoring treatment clinical diseases. Conventional immunoassays were accustomed to introducing or incorporating enzymes for signal amplification, which commonly suffered from poor stability inferior tolerance. Herein, we constructed a novel nonenzyme amplification methodology based on fluorogenic Ag+-tetrazolate aggregation coupled with silver corrosion sensitization biomarker determination. A...

We report herein an organic charge transfer cocrystal complex, consisting of a stable radical TPVr and electron acceptor TCNQF4, as rare sort all-organic-based magnetic bistable materials with thermally activated hysteresis loop over the temperature range from 170 to 260 K. Detailed X-ray crystallographic studies theoretical calculations revealed that while π-associated anion dimer was formed upon integer process TCNQF4 molecules within lattice, resulting TCNQF4·- π-dimers were found exhibit...