Two classical metal clusters, CuI4I4 and CuI6S6, are introduced as functional connecting nodes to construct a novel multi-metal-cluster MOF [(CuI4I4)3(CuI6)2(3-ptt)12]n·24nDEF·12nH2O (1) that incorporate their inherent luminescent properties, induced by respective metal–metal interactions. These two distinct clusters combined together for the first time perform luminophores display unusual dual emission with both thermochromic luminescence near-infrared (NIR) character.

A metal–organic framework, with chiral 41 In(OH)(CO2)2 helix chains, exhibits a high CO2 uptake under ambient conditions and outstanding selective separations of from CH4 or N2. Its stability toward humidity even boiling water is confirmed by PXRD method.

Exceptional nonlinear optical (NLO) switching behavior, including an extremely large contrast (on/off) of ∼35 and high NLO coefficients, is displayed by a solid-state reversible quadratic switch. The favorable results, induced very fast molecular motion anionic ordering, provides impetus for the design novel second-harmonic-generation switch involving motion. As service to our authors readers, this journal supporting information supplied authors. Such materials are peer reviewed may be...

A promising coordination polymer photocatalyst (Y[Ir(ppy)2(dcbpy)]2[OH]) (Ir-CP, ppy = 2-phenylpyridine, dcbpy 2,2′-bipyridine-4,4′-dicarboxylate) based on a highly efficient light-harvesting Ir unit, Ir(ppy)2(Hdcbpy), has been obtained, with good stability and exhibiting visible-light absorption over broad range, arising from the metal-to-ligand charge transfer (3MLCT) ligand-to-ligand (LLCT). The designed Ir-CP heterogeneous acts as both photosensitizer to harvest visible light, an active...

Poor stability has long been a major obstacle to the practical applications of metal–organic framework (MOF) photocatalysts. This problem can be overcome by use structural interpenetration. In this work, modifying Ru metalloligands, we have rationally designed two Ru–polypyridine based MOFs (with non-interpenetrated and interpenetrated structures, respectively), both which exhibit similar photocatalytic activities for CO2 photoreduction. Remarkably, Ru-MOF possesses good durability...

Unique 3D hierarchical flower-like metal–organic nanostructures have been reported, which can act as stable and effective heterogeneous photocatalysts for visible-light driven CO₂photoreduction.

A new noncentrosymmetric borate CsZn2B3O7 was synthesized by the solid-state reaction techniques. The crystals were obtained flux method and are of block shape without layering tendency. Single-crystal X-ray diffraction analysis reveals that crystal structure is composed [Zn2BO5]∞ two-dimensional layers bridged [B3O6]3– groups to form a three-dimensional framework with one-dimensional channels occupied Cs+ cations along c axes. Thermal indicates melts incongruently. UV–visible–near-IR...

Ru(H2dcbpy)32+, one of the Ru(bpy)32+ (dcbpy = 2,2′-bipyridine-4,4′-dicarboxylic acid, bpy 2,2′-bipyridine) derivatves, has been used as a propeller-like photoactive metalloligand to coordinate with indium(III) ions form highly symmetric metal–organic framework [InRu(dcbpy)3][(CH3)2NH2]·6H2O (1), and cubic microcrystals 1 have acquired through modified procedures. Compound manifests broad visible light absorption band strong red emission long decay lifetime, both which are originated from...

Hydrothermal reaction of zinc nitrate, 4-(4-carboxyphenoxy)phthalate acid (H3cpop), and different N-donor coligands has afforded six novel supramolecular compounds, in which the nature neutral plays a crucial structure-directing role. [Zn(Hcpop)(H2O)3]n (1) [Zn(Hcpop)(phen)(H2O)]n (2, phen = 1,10-phenanthroline) form three-dimensional (3D) frameworks linked by H-bonds π–π interactions based on discrete molecules. Similarly, [Zn2(Hcpop)2(4,4′-bpy)3(H2O)2]n·4nH2O (3) possesses 3D structure,...

An organic supramolecular co-crystal with a perovskite-like architecture, dabco·p-nitrophenol (1, dabco = 1,4-diazabicyclo[2.2.2]octane), which undergoes reversible ferroelastic phase transition the Aizu notation of 2/mF at around 128 K (Tc), displays switchable dielectric behaviors triggered by ordering molecular rotational motion in moieties. Its dynamic were investigated variable-temperature crystal structure analysis, thermal analysis and measurements. The results reveal that...

A host-guest inclusion compound [(DPA)(18-crown-6)]ClO4 (DPA = dipropylamine) undergoes a reversible phase transition at 214 K, which enables it to switch the NLO response between SHG-ON and SHG-OFF states associated with order-disorder of guest DPA cations slight tilting host 18-crown-6 molecules.

An intense visible yellow-orange emission with long lifetime and enhanced quantum yield has been achieved for a metal–organic framework based on highly light-harvesting dyclo-metalated iridium(III) unit, which shows effective detection of nitroaromatic explosives the ppm scale.

Reactions of a tripodal ligand, N,N',N″-tris(3-pyridinyl)phosphoric triamide (TPPA), and series transition-metal ions result in the assembly five discrete M(6)L(8) coordination cages [M(6)(TPPA)(8)(H(2)O)(12)](ClO(4))(12)·57H(2)O [M = Ni(2+) (1), Co(2+) (2), Zn(2+) (3), Cd(2+) (4)] [Pd(6)(TPPA)(8)]Cl(12)·22H(2)O (5). X-ray structural analyses reveal that have large internal cavities flexible windows. The ligand TPPA adopts syn conformation 1-4, but it transforms to anti cage 5. Because...

Ultrahigh pyroelectric figures of merit are achieved in a new phase-transition material, di-n-butylaminium trifluoroacetate, which the peak values an order magnitude larger than those their inorganic counterparts. Such attractive behavior detectivity is strongly related to its distinct bistable dielectric behavior, recalls excellent thermoelectric response organic molecular systems.

A novel dual-emissive metal–organic framework [Pb3(BPT)2(phen)2]·phen (1) has been obtained by hydrothermal reactions of biphenyl-3,4′,5-tricarboxylic acid (H3BPT), phen, and lead nitrate in aqueous solution. It consists a main right-handed helix three left-handed helical chains with the sharing same axis further enwinding chain alternately. The BPT3– ligands join 1D into 2D layers terminal phen liands extending upward downward, which are interdigitated 3D packing supramolecular architecture...

Donor-acceptor (D-A) hybrid frameworks with visual X-ray photochromism at room temperature are fascinating because of their promising applications as detectors. Herein, a 3-fold interpenetrated D-A framework, [Eu(bcbp)1.5(DMF)(H2O)2][Co(CN)6]·4H2O·CH3OH (1), has been obtained by incorporating electron-rich Co(CN)63- into the electron-deficient europium viologen which interestingly exhibits ultraviolet and low-power dual remarkable color change from brown to green. Experimental theoretical...

Single crystals of CdTeMoO6 have been grown from its stoichiometric melts. is non-hygroscopic and resistant to diluted HNO3 aqua-solution. It also thermally stable up 766 °C thereafter melts congruently. Transmittance spectra show a broad transmittance window in the range 345 nm 5.4 μm. Based upon single-crystal X-ray diffraction analysis, nonpolar noncentrosymmetric (NCS) features neutral layered structure consisting three types NCS chromophores, i.e. TeO4 polyhedra with stereoactive lone...

A novel molecular electric ordered compound [(Hdabco)+ClF2CCOO–] (complex 1, dabco = 1,4-diazabicyclo[2.2.2]octane) has been discovered as a switchable dielectric material, in which the N–H···O hydrogen bonds connect anions and cations together to form dimer structure. It undergoes reversible second order solid state phase transition at 165 K (Tc), was confirmed by thermal analyses including differential scanning calorimetry (DSC) specific heat (Cp) measurements. Variable temperature single...

An organic dielectric relaxor, N-isopropylbenzylammonium tetrafluoroborate (1), with tunable properties between high and low states, has been successfully constructed through the prominent strategies of reversible structure transitions associated ordering reorientation molecular motions. 1 undergoes an exceptional order–disorder solid state phase transition at 201 K, which was confirmed by variable temperature single crystal X-ray diffraction analysis, thermal analysis measurements. Owing to...

A novel supramolecular phase change material (PCM) potassium hydrogen bis(dichloroacetate)-18-crown-6 (1), which undergoes a reversible second-order transition at 181.8 K (Tc), has been successfully synthesized and grown as bulk crystals. DSC measurements confirm its with thermal hysteresis of 1.6 K. Dielectric permittivities also display obvious anomalies approaching Tc, being characteristic for the transition. Variable-temperature X-ray single-crystal diffractions demonstrate that 1...

Diisopropylammonium trifluoromethanesulfonate, a switchable molecular dielectric material, undergoes two sequential phase transitions and exhibits sequentially behaviour at around 200 340 K respectively.

Highly controllable photoelectric switches are urgently demanded in the field of nonlinear optics. In present work, high-performance quadratic molecular optical (NLO)-switches based on organic hydrogen-bonded ferroelectric materials, showing large contrasts (up to ∼68%), tunable reversibility, and superior switching "on–off" time, were first prepared from highly oriented thin polymer films, which overcome stability problems conventional photochromic counterparts throw light further research...