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Measuring the size and complex refractive index of an aqueous aerosol particle using electromagnetic heating and cavity-enhanced Raman scattering
A quantitative understanding of light scattering by small homogeneous particles requires accurate knowledge of particle geometry and complex refractive index, m = n + ik. In weakly absorbing particles, k can be on the order of 10−9, which is well below the detection limit of almost all light scatter...

4,4[prime or minute],4[prime or minute][prime or minute]-Triaminotriphenylamine-based porous polyimide as a visible-light-driven photocatalyst
Aiming to develop a visible-light-driven polymeric photocatalyst that can be fabricated by an easy-to-scale-up polymerization method, a porous polyimide (PPI) with a specific surface area (SBET) of 79.3 m2 g−1 was synthesized by a facile polycondensation of 3,3′,4,4′-benzophenonetetracarboxylic dian...

A dual pH-responsive supramolecular gelator with aggregation-induced emission properties
Functionalising AIE-active aromatic thioethers with self-complementary zwitterionic binding sites leads to a dual pH-responsive supramolecular organogelator with aggregation-induced emission (AIE) properties. The self-assembled fibrillar gel network is highly fluorescent (λem = 490 nm), whereas the ...

Asymmetric Organocatalytic Synthesis of Chiral 3,3-Disubstituted Oxindoles via 1,6-Conjugate Addition Reaction
A highly efficient synthesis of chiral 3,3-disubstituted oxindoles was developed by using a chiral spirocyclic phosphoric acid catalyzed 1,6-conjugate addition reaction of para-quinone methoids derived from N-unprotected isatins with indoles. The reaction proceeds under mild reaction conditions to p...

Dynamical resonances in chemical reactions
The transition state is a key concept in the field of chemistry and is important in the study of chemical kinetics and reaction dynamics. Chemical reactions in the gas phase are essentially molecular scattering processes, which are quantum mechanical in nature. Thus probing and understanding detaile...

Anodic dissolution growth of metal–organic framework HKUST-1 monitored via in situ electrochemical atomic force microscopy
In situ electrochemical atomic force microscopy (ec-AFM) is utilised for the first time to probe the initial stages of metal–organic framework (MOF) coating growth via anodic dissolution. Using the example of the Cu MOF HKUST-1, real time surface analysis is obtained that supports and verifies many ...

Chemiluminescence of black phosphorus quantum dots induced by hypochlorite and peroxide
For the first time, black phosphorus quantum dots (BP QDs) were found to show chemiluminescence (CL) properties in the presence of hydrogen peroxide (H2O2) and hypochlorite (ClO−). Excited phosphorus oxides (HPO) resulting from the oxidation of BP QDs account for CL emission. Taking triacetone tripe...

K11RbB28O48: A New Triple-layered Borate with an Unprecedented [B28O57] Fundamental Building Block
A new mixed-alkali borate, K11RbB28O48, has been obtained using the high-temperature solution method. It features a new [B28O57] fundamental building block. Meanwhile, these units further polymerize to form unusual triple-layered anionic groups. Thermal analysis, optical property measurement, and th...

Charge designable and tunable GFP as a target pH-responsive carrier for intracellular functional protein delivery and tracing
A charge designable and tunable green fluorescent protein (GFP)-based protein delivery strategy was proposed. The acquired His29GFP selectively permeates the cell membrane at a target pH of 6.5 and escapes from the endosome efficiently. The delivered RNase A caused substantial mRNA degradation in He...

On Mechanisms for Mesocrystal Formation: Magnesium Ions and Water Environments Regulate Crystallization of Amorphous Minerals
Nature produces hierarchical, functional materials by shaping amorphous mineral precursors under physiological conditions. Although biominerals inspire the architectures of synthetic counterparts, the biogenic phase transformations yielding precise crystalline forms, polymorphs and structures are un...

A bifunctional cationic metal–organic framework based on unprecedented nonanuclear copper(II) cluster for high dichromate and chromate trapping and highly efficient photocatalytic degradation of organic dyes under visible light irradiation
A bifunctional cationic metal–organic framework {[Cu9(OH)6Cl2(itp)6(1,4-bdc)3](NO3)2(OH)2·20H2O}n (1-NO3-OH·20H2O) was synthesized and characterized (itp = 1-imidazol-1-yl-3-(1,2,4-triazol-4-yl)propane, 1,4-bdc = 1,4-benzenedicarboxylate). In 1-NO3-OH·20H2O, three [Cu3(μ3-OH)(μ2-OH)] trimeric cluste...

New sarcosine–metal halide complexes related to ferroelectric TSCC
There are relatively few sarcosine metal halide complexes. Of these, tris sarcosine calcium chloride (TSCC) ((C3NO2H7)3CaCl2) stands out as an unusual example of a molecular ferroelectric. Here we report the syntheses of eight new related sarcosine–metal halide complexes by slow evaporation. The new...

Sustainable hydrophobic terpene-based eutectic solvents for the extraction and separation of metals
Sustainable hydrophobic eutectic solvents, composed of low-priced and biodegradable terpenes and fatty acids, were used for the extraction and separation of Cu(II) from other transition metals in mildly acidic solutions. Multiple parameters were evaluated for metal extraction and the hydrophobic eut...

High contrast mechanochromic and thermochromic luminescence switching by a deep red emitting organic crystal
In this study, we report a deep red emissive organic crystal that displays high contrast fluorescence switching under mechanical- and thermal stimulation. Upon mechanical grinding, the pristine red emissive crystals of 1R (λem = 667 nm) transformed to green emissive crystalline powder (λem = 550 nm)...

Effects of diminished steric protection at phosphorus on stability and reactivity of oxaphosphirane complexes
Readily available P-tBu substituted Li/Cl phosphinidenoid complexes react with carbonyl compounds to furnish sterically almost unhindered oxaphosphirane complexes that reveal new and surprisingly facile intra- and intermolecular ring expansion reactions. 1,3,2-Dioxaphosphole complex formation is exp...


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