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The complex 1 [Zn(BTC)2/3 ] ⋅ [HCON(CH3)2] ⋅ [C2H5OH]}n(1) was prepared from 1,3,5-benzenetricarboxylic acid (H3 BTC) and Zn(H) cation via a solvothermal technique. The complex 1 was characterized by single crystal X-ray diffraction (SXRD), Fourier transform-infrared spectroscopy (FT-IR), thermogravimetric analysis (TGA), powder X-ray diffraction (PXRD) and fluorescence spectroscopy. Single crystal X-ray diffraction analysis indicates that complex 1 belongs to space group P21/n of the monoclinic system. In complex 1, the Zn(II) ion is coordinated with BTC3- anion through the oxygen atom on the carboxyl group, forming a three-dimensional Zn(II) metal-organic framework (MOF) structure with channels. And through intermolecular hydrogen bond interaction, ethanol and N, N'-dimethylformamide (DMF) molecules are encapsulated into parallelogram channels. Fluorescence spectrum analysis at room temperature shows that when the excitation wavelength is 297 nm, complex 1 has the strongest emission peak at 601 nm. [ABSTRACT FROM AUTHOR]

Compounds 1 and 2 were synthesized and characterized based on different viologen ligands. They showed different structures, photochromism and applications. [Display omitted] • Two novel multifunctional Cd-viologen coordination polymers have been synthesized. • Compounds 1 and 2 exhibit high sensitivity to UV light. • Compound 2 has the ability to detect amines. The self-assembly of Cd(II) ions with two kind of viologen ligands 1-(3,5-dicarboxybenzyl)-4,4′-bipyridinium chloride (H 2 L1+Cl −), 1-(3-carboxybenzyl)-4,4′-bipyridinium chloride (HL2+Cl −) and 1,3,5-benzenetricarboxylic acid (H 3 BTC) under solvothermal and hydrothermal conditions results in two coordination polymers, namely, {[Cd(L1)OH]} n (1) and {[Cd(L2)(HBTC)H 2 O]·2H 2 O} n (2). Due to the formation of viologen radicals, they exhibit reversible photochromism through electron transfer, and the order of light response time is 2 > 1. The time-dependent density functional theory (TDDFT)-B3LYP/lanl2dz method was used to deeply understand the donor–acceptor structures, the matching rules between L and acid parts, and the intermolecular/intramolecular atom- atom close contact based on the fraction of intercontact. Compound 1 exhibit intramolecular electron transfer. Compound 2 exhibits two electron transfer modes: intramolecular and intermolecular electron transfer. In addition, when exposed to various amines (NH 3 , TEA = triethylamine, MA = o-methylaniline, aniline), compound 1 displays significantly different visual color changes. [ABSTRACT FROM AUTHOR]

The two coordination polymers have good reversible photochromic properties and ammonia sensing properties. Complexes 1 and 2 exhibit a difference in sensing, with a response rate of 2 > 1 to light. [Display omitted] • Two metal coordination polymers were designed and synthesized, and their structures were studied. • Complexes 1 and 2 both exhibit stimuli-responsive properties to light, have photochromic properties. • Complexes 1 and 2 are sensitive to ammonia vapor and can be further explored in the field of ammonia sensing. Synthesized two supramolecular coordination polymers, {Cd 3 [(bcbpy) 3 Cl 6 ]·8H 2 O} n (1) (bcbpy = 1,1′-bis(3-carboxybenzyl)-4,4′-bipyridinium) and {Zn[(bcbpy) 0.5 (nip)]·H 2 O} n (2) (nip2- = 5-nitroisophthalic acid anion), showed good photochromic properties when both coordination polymers changed from yellow to dark green under light stimulation, and the primary color could be restored at 85–95 °C for 60 min, this reversible cycle can be repeated more than 5 times. This photochromism is caused by photoinduced electron transfer to viologen free radicals. In addition, in ammonia vapor, both complexes changed from yellow to tan, showing good ammonia sensing characteristics. Research has found that complexes 1 and 2 exhibit sensing differences, with a response rate to light of 2 > 1. This sensing difference is mainly related to the D-A distance between molecules, π-π interactions, and the regulatory effect of metal ions or secondary ligands. [ABSTRACT FROM AUTHOR]

Highlights: [•] The 2000–2634aa region of HUWE1 mediates the interaction with BRCA1 degron. [•] HUWE1 promotes the degradation of BRCA1 through the ubiquitin–proteasome pathway. [•] HUWE1 expression is inversely correlated with BRCA1 in breast cancer cells. [•] RNAi inhibition of HUWE1 confers increased resistance of MCF-10F cells to IR and MMC. [ABSTRACT FROM AUTHOR]