Themed collection Journal of Materials Chemistry C HOT Papers

We summarize the molecular design of photoresponsive liquid-crystalline polymers, manipulation at multiple scales and various applications based on their intrinsic properties, providing an opportunity for future development in this field.

This article provides a comprehensive review of chiral quantum dots used for bioapplications. The chiral mechanisms, g factor and some bioapplications are also discussed.

In optical systems for communication, sensing, and imaging, integrating optoelectronic and electronic components on-chip to develop optoelectronic applications has become the focus of future research.

Carbazole–cyanostilbene conjugates exhibit promising optical properties, including AIE and MFC. This review explores their diverse applications across various fields, highlighting their unique characteristics and potential impact.

Using thin AlO_x as dielectrics, low-voltage polymer monolayer TFTs were attained with a SS of 86 mV dec⁻¹. The resultant unipolar and complementary inverters exhibited high voltage gains of 251 V/V at V_DD = −3 V and 841 V/V at V_DD = 5 V.

Four pairs of chiral Ag₆L₆ nanoclusters, synthesized using ligand engineering with thiazithione and oxazinthione, exhibit enhanced luminescence quantum yield attributed to S⋯S interactions and demonstrate supramolecular chirality inversion regulated by peripheral methyl and phenyl groups.

C₈H₆IN₃O₄ exhibits a substantial birefringence of 0.55 at 550 nm, surpassing commercially available birefringent materials, and this phenomenon is attributed to the uniform alignment of π-conjugated [NO₃]⁻ and [C₈H₆IN₂O]⁺ groups.

Cd-free QLEDs with tunable emission from 603 to 524 nm were constructed by regulating the non-stoichiometric Cu : Ga molar ratio, and the green QLEDs showed high performance with an EQE of 5.8% and a high brightness of 7016 cd m⁻².

We used temperature-dependent spark plasma sintering to induce phase transformations of metastable 3D c-BN to mixed-phase 3D/2D c-BN/h-BN and ultimately to the stable 2D h-BN phase at high temperature, useful for extreme-temperature technology.

BaTiO₃ all-dielectric metasurfaces exhibit a broader SPhPs propagation range and possess a higher Q-factor compared to conventional fully dielectric supersurfaces.

Chiral mesostructured In₂O₃ films composed of nanoflakes with different exposed facets exhibit spin chiral anisotropy, which manifests as chirality-dependent but external magnetic field-independent asymmetric magnetic circular dichroism signals.

This paper employs regression models based on machine learning to propose a method for predicting the energy level distribution rules of Cr³⁺ and Fe³⁺ in various doped crystals.

Low band gap and high hole mobility benzothiadiazole–oligothiophene conjugated polymers free from side chains are readily synthesized and deposited in the form of thin films via chemical vapor deposition.

Collaborative optimization of strong coordination and hydrogen bonds is employed to impede phase separation and enhance photoluminescence for mixed-halide QDs.

Near-infrared circularly polarized organic room temperature phosphorescence is achieved by doping a naphthalimide derivative guest into a tartaric acid derivative host.

Colloidal graphene quantum dots, NaYF₄:Yb, Er upconverting nanoparticles, and PbS quantum dots were formulated for inkjet fabrication of detectors and displays with optical properties tunable from the ultraviolet to the near-infrared.

By encapsulating luminol and Co²⁺ within UiO-67-bpydc, we construct an enhanced chemiluminescence MOF material. UiO-67-bpydc⊃Co+Lu exhibits excellent sensing properties for H₂O₂ and glucose, and can accurately image skin inflammation.

A-site-ordered and -disordered GdBaCo₂O₆ films were synthesized through topotactic oxidation. These films exhibit distinct magnetic and conductive properties, attributed to variations in Co spin states driven by changes in ionic arrangement.

An artificial synaptic device based on amorphous oxides is created inspired by biological synapse, and a three-layer artificial neural network is constructed using the data of a LTP-LTD circle.

Revealing the photobehaviour of a new BTD-based HOF shows the occurrence of intramolecular charge-transfer and intermolecular proton-transfer photoevents leading to different emission spectra and lifetimes when compared to the molecular units.

In this study, two isomers BP1 and BP2, featuring diindolophenthiazine as the donor and benzophenone as the acceptor, are designed and synthesized for the first time.

Achieving a colour-tuneable afterglow by selectively activating different exciton transfer channels in a carbon dot–cyanuric acid composite by alkali induction.

This work reports the fabrication of regenerated cellulose-based separators with efficient ion transport properties, high porosity, and excellent electrolyte wettability using vacuum freeze-dried cellulose membranes.

A novel superconductive structure of P2₁/m GeSH₁₄ is predicted with a T_c of 128 K at 180 GPa. It is composed of covalent hydrogen chains bridging the adjacent Ge–S–H polyhedra, favorable for stabilizing the structure and enhancing superconductivity.

The advanced synthetic methodologies for discrete chiral Au nanorods promote understanding the effect of structure parameters, intrinsic chirality and extrinsic chirality on the chiral plasmonic couplings.

Photocatalytic water splitting reactions (HER and OER) on the asymmetric surfaces of Janus MXenes with the help of intrinsic electric field (E_i).

The novel ionic liquid (IL) salt BMIMPF6 doping TFB elevates the work functions and surface potentials of the TFB HTL, and promotes effective charge transfer within the QDs, resulting in a significant improvement in device performance.

The introduction of an equivalent RLC circuit loss mechanism realizes strong EMW absorption in a low-filling ratio and even lower thicknesses.

The performance of a gas sensor was improved by incorporating organic additives with various amine functional groups into the P3HT active layer due to the strong binding energy between the amine functional groups and the target gas.

The armor-like heptacyclic framework enhances the rigidity and stability of host materials named Hept-TRZ. The luminescent devices based on Hept-TRZ as the red host achieve high efficiency and long lifetime of PhOLEDs.

Polypyrrole/NiFe-layered double hydroxide composite with excellent microwave absorption capability and anti-corrosion performance that can be used in marine environments.

A self-trapped excition emission in alkali iodide nanocrystals performance a broad yellow emitting via Sn(II) doping.

A family of ca. 350 double perovskites Cs₂(Ag,Na)M^IIICl₆, M^III = Bi, Sb, In, Fe, with two or three alloyed M^III cations was produced by high-throughout robot-assisted synthesis revealing non-additive compositional dependences of spectral properties.

A new 2-D 8-connected rare earth (RE) MOF based on a hexanuclear (RE³⁺)₆ SBU, the increase of the dimensionality through SCSC linker installation reactions and the turn-on of the temperature sensing capability upon these reactions are reported.

2,6-Diaminopyridinium hydrobromide has dual functions of etching and passivation. It can peel off the outer layers and simultaneously passivate the internal crystal structure, ultimately achieving high-performance deep blue CsPbBr₃ NPLs.

Terminal flexible chains in homoleptic tris-Ir(III) complexes from ethylhexyl carboxylic ester to hexyl induced dramatic differences in absorption and emission, and in particular had an opposite effect in ternary organic solar cells.

Herein, we propose a feasible design for enhancing PLQY, SOC and achieving balanced carrier mobility of the HLCT blue emitter. The non-doped OLED base on PPIFB with higher PLQY (91%), higher SOC (14.7 cm⁻¹) and the balanced carrier mobilities.

Defect tolerance, which plays a crucial role in the outstanding photoelectric performance of hybrid organic–inorganic perovskites (HOIPs), is dynamically responsive to illumination. Continuous illumination can induce local structural reorganization leading to dynamic PL enhancement.

This study delves into the intricate interplay of vibrational coupling within isoelectronic frameworks featuring both zigzag and armchair topologies, aiming to better understand the topological and heteroatom impacts on reorganization energy.

Lead-free halide perovskites Cs₂SnX₆ (X = Cl, Br, I) exhibit favorable humidity sensing with a response sequence of Cs₂SnCl₆ > Cs₂SnBr₆ > Cs₂SnI₆, enabling great potential for real-time non-contact human breath and finger monitoring.

In situ X-ray absorption spectroscopy on C-doped Ge₂Sb₂Te₅ thin films reveals that C-content increases the rigidity of the Ge–Te bond in the amorphous phase, but curiously, only at moderate doping levels.

Lightweight SSE-EVA foam (SEF) with excellent compression resilience and mechanical-thermal protection was prepared by foaming. It owned application potential in thermal camouflage and thermal storage materials.

In this work, we designed a RPL material SrF₂:Eu which could achieve PL discoloration after X-ray irradiation. The SrF₂:Eu bulk was optimized to improve the imaging quality, which is the excellent candidate for time-lapse imaging.

Ambient solution-processed halide perovskite thin films are susceptible to oxygen and moisture. Composition and morphology control of the films via anti-solvents treatment, i.e., DCB, EtOH, and CB affect their crystallization and solar cell performance.

A fluorescent probe enables dual-channel selective “turn-on” detection of Hg²⁺ and Ag⁺via distinct thiophilic effects was designed. Mechanisms of this chemosensor and the opposite luminescence behavior of the molecules were carefully explored.

This research thoroughly analyzes strain sensing performance and thermal stability of metallic glass (MG) electrodes. The amorphous characteristic of MG film endows a high gauge factor and bending motion detection of the strain sensor device.

Sheet-on-sheet architectural heterojunction (DLS-2D-Co-TCPP(Fe)/ANS–rGO-0.5) with Fe–N₄ units was prepared which exhibited superior sensing performance toward NO at room temperature, including a pLOD of 100 ppb and long-term stability over 60 days.

A new surface engineering approach that allows for enhanced control over ligands by decoupling colloidal-stabilization and property-engineering ligands was developed.

TFS-TFMS was introduced to modulate the upper interface in n–i–p structured perovskite solar cells, resulting in significantly improved device performance owing to the synergistic engineering of fluorine and sulfonate functional sites.

We demonstrate the modulation of Auger recombination via facet engineering in CsPbBr₃ perovskite nanocrystals, where the static dielectric screening effect is revealed to prevail over the dynamic polaronic screening effect.

A performance-stable tactile neuron is developed, which integrates a stretch-insensitive triboelectric nanogenerator with an artificial neuron in a single device, and a 64 × 64 neuromorphic tactile matrix is established to process touch signals.

An active dual-stimulus responsive coloured cholesteric fibre that enables orthogonal modulation of reflection bands and reflectance by optical and gaseous means, respectively.

Sliding antiferromagnetic bilayers have attracted considerable attention due to their multiferroic properties coupled with layers.

Faced with a huge amount of information, the brain relies on attention mechanisms to highly select information for efficient processing.

Ce:LuAG–Al₂O₃ nanoceramics prepared through glass crystallization present an ultrahigh luminous flux (LF) of 5124.7 lm and an excellent luminous density of 4235.5 lm mm⁻² in LD-driven lighting.

Ln-MOFs were designed for anti-counterfeiting labels by using texture codes. Moreover, three visual probes based on 1-Eu for MEAA detection are fluorescent films, RGB intelligent detection sensor platforms, and portable logic detectors.

The TADF emitter TCPP-DTPA with a multilayered π-stacked structure accelerates the RISC process and achieves extremely low-efficiency roll-off in red OLEDs.

An ionic-hydrogel based temperature sensor with anti-freezing capabilities, anti-strain interference capabilities and luminescence properties is presented.

Lead-free perovskite composites were prepared by in situ doping and crystallization. The optimized scintillators achieved improved stability, light yield and transparency, which resulted high X-ray sensitivity and low detection limit.