A5101507725- X-ray Diffraction in Crystallography
- Crystallization and Solubility Studies
- Crystallography and molecular interactions
- Supramolecular Chemistry and Complexes
- Luminescence and Fluorescent Materials
- Molecular Sensors and Ion Detection
- Metal-Organic Frameworks: Synthesis and Applications
- Supramolecular Self-Assembly in Materials
- Axial and Atropisomeric Chirality Synthesis
- Magnetism in coordination complexes
- Porphyrin and Phthalocyanine Chemistry
- Per- and polyfluoroalkyl substances research
- CO2 Reduction Techniques and Catalysts
- Epoxy Resin Curing Processes
- Photochromic and Fluorescence Chemistry
- Organometallic Complex Synthesis and Catalysis
- Photochemistry and Electron Transfer Studies
- Synthesis and pharmacology of benzodiazepine derivatives
- Membrane Separation and Gas Transport
- Advanced Chemical Physics Studies
- Stuttering Research and Treatment
- Synthesis and properties of polymers
- Fullerene Chemistry and Applications
- Porphyrin Metabolism and Disorders
- Metal complexes synthesis and properties
The University of Texas at Austin
2021-2024
Beijing Normal University
2006-2024
National University of Defense Technology
2017
Hunan Normal University
2017
Capital Normal University
2006
Per- and polyfluoroalkyl substances (PFAS) accumulate in water resources pose serious environmental health threats due to their nonbiodegradable nature long persistence times. Strategies for the efficient removal of PFAS from contaminated are needed address this concern. Here, we report a fluorinated nonporous adaptive crystalline cage (F-Cage 2) that exploits electrostatic interaction, hydrogen bonding, F–F interactions achieve perfluorooctanoic acid (PFOA) aqueous source phases. F-Cage 2...
Abstract Host-guest complex solid state molecular motion is a critical but underexplored phenomenon. In principle, it can be used to control machines that function in the state. Here we describe system operates on basis of complexation between an all-hydrocarbon macrocycle, D 4d -CDMB-8 , and perylene. Molecular this machine induced by exposure organic solvents or grinding gives rise different co-crystalline, mixed crystalline, amorphous forms. Distinct time-dependent emissive responses are...
This feature article summarises recent contributions of the authors in area flexible imidazolium macrocycle and related anion-induced supramolecular self-assembly.
Described here is a three-component self-assembly system that displays emergent behavior differs from of its constituents. The comprises an all-hydrocarbon octaaryl macrocycle cyclo[8](1,3-(4,6-dimethyl)benzene (D4d-CDMB-8), corannulene (Cora), and I2. No appreciable interaction seen between any pair these three-components, either in cyclohexane or under various crystallization conditions. On the other hand, when all three-components are mixed allowed to undergo crystallization,...
Substituent effects play critical roles in both modulating reaction chemistry and supramolecular self-assembly processes. Using substituted terephthalate dianions (p-phthalic acid dianions; PTADAs), the effect of varying type, number, position substituents was explored terms their ability to regulate inherent anion complexation features a tetracationic macrocycle, cyclo[2](2,6-di(1H-imidazol-1-yl)pyridine)[2](1,4-dimethylenebenzene) (referred as Texas-sized molecular box; 14+), form its...
Controllable solid-state transformations can provide a basis for novel functional materials. Herein, we report series of systems that be readily transformed between amorphous, co-crystalline, and mixed crystalline states via grinding or exposure to solvent vapors. The present solid materials were constructed using an all-hydrocarbon macrocycle, cyclo[8](1,3-(4,6-dimethyl)benzene) (D4d-CDMB-8) (host), neutral aggregation-caused quenching dyes (guests), including 9,10-dibromoanthracene (1),...
Molecular folding regulation with environmental stimuli is critical in living and artificial molecular machine systems. Herein, we described a macrocycle, cyclo[4] (1,3-(4,6-dimethyl)benzene)[4](1,3-(4,6-dimethyl)benzene)(4-pyridine). Under 298 K, it has three stable stiff atropisomers names as 1 (Cs symmetry), 2 3 (C4v symmetry). At 393 can reversibly transform into 2, but at 473 irrevocably 3. 338 (PhCN)2PdCl2 complex to produce the metal-organic cage 4. Only K does combination of or...
A new thermally activated all-hydrocarbon rigid macrocycle receptors system, cyclo[8](1,3-(4,6-dimethyl)benzene) (<bold>CDMB-8</bold>) has been reported.
Electron transport chains (ETCs) are ubiquitous in nearly all living systems. Replicating the complexity and control inherent these multicomponent systems using ensembles of small molecules opens up promising avenues for molecular therapeutics, catalyst design, development innovative energy conversion storage Here, we present a noncovalent, multistep artificial electron comprising cyclo[8]pyrrole (1), meso-aryl hexaphyrin(1.0.1.0.1.0) (naphthorosarin 2), I2 trifluoroacetic acid (TFA)....
Abstract Solid‐state fluorescent materials play a critical role in the manufacture of light‐emitting diodes, laser dyes, storage materials, and fluorescence sensors. However, it remains challenging to produce solid‐state using traditional organic dyes since most are subject aggregation‐caused quenching (ACQ) solid state. Here, macrocycle‐derived crystalline framework is reported that captures various cationic test‐ACQ (e.g., Basic Red 2 (BR2)) stabilizes them form....
We report a molecular switching ensemble whose states may be regulated in synergistic fashion by both protonation and photoirradiation. This allows hierarchical control kinetic thermodynamic sense. These pseudorotaxane-based devices exploit the so-called Texas-sized box (cyclo[2]-(2,6-di(1H-imidazol-1-yl)pyridine)[2](1,4-dimethylenebenzene); 14+, studied as its tetrakis-PF6- salt) wheel component. Anions of azobenzene-4,4'-dicarboxylic acid (2H+•2) or 4,4'-stilbenedicarboxylic (2H+•3) serve...
We report here an expanded porphyrinoid, cyclo[2]pyridine[8]pyrrole, 1, that can exist at three closed-shell oxidation levels. Macrocycle 1 was synthesized via the oxidative coupling of two open chain precursors and fully characterized by means NMR UV–vis spectroscopies, MS, X-ray crystallography. Reduction oxidized form (1, blue) with NaBH4 produced either half-oxidized (2, teal) or reduced forms (3, pale yellow), depending on amount reducing agent used presence absence air. Reduced...
Macrocyclic conformations play a crucial role in regulating their properties. Our understanding of the determinants to control macrocyclic conformation interconversion is still its infancy. Here we present macrocycle, octamethyl cyclo[4](1,3-(4,6)-dimethylbenzene)[4]((4,6-benzene)(1,3-dicarboxylate) (OC-4), that can exist at 298 K as two stable atropisomers with C2v and C4v symmetry denoted C2v-OC-4 C4v-OC-4, respectively. Heating induces efficient stepwise conversion C2v- C4v-OC-4 via...
Stuttering is a neurodevelopmental speech disorder characterized by common symptoms such as pauses, exclamations, repetition, and prolongation. Speech-language pathologists typically assess the type severity of stuttering observing these symptoms. Many effective end-to-end methods exist for detection, but commonly overlooked challenge uncertain relationship between tasks involved in this process. Using suitable multi-task strategy could improve detection performance. This paper presents...
Abstract C 62 H 64 Cu 2 I O 4 P , triclinic, 1̅ (no. 1), a = 10.0989(2) Å, b 12.8084(1) c 12.8423(2) α 65.074(1)°, β 84.31°, γ 87.854(1)°, V 1499.0 Å 3 Z 1, R gt (F) 0.036, wR ref (F ) 0.098, T 293 K.