Themed collection Molecular Materials and Devices

Welcome to this themed collection of Materials Chemistry Frontiers entitled: ‘Molecular Materials and Devices’.

The material selection, working mechanism and target application in the development of electrolyte-gated light-emitting transistors are summarized.

This review introduces basic concepts and recent progress in self-assembled monolayers as a powerful tool for interface engineering of organic thin film transistors.

Design and effective synthesis methods for high-performance polymer semiconductor-based OFETs.

This review presents a general overview of polymer–nanocrystal hybrid solar cells (HSCs). The device structure and operation mechanism of bulk heterojunction HSCs are introduced, and recent works that have been done to improve the device performance or clarify the operation mechanism are summarized and discussed in detail. Also, the challenges and perspectives of HSCs are presented.

Small bandgap 2D perovskites were synthesized with desired orientation and the corresponding solar cells presented high efficiency and good stability.

A photolithography compatible way for the fabrication of Micro-OLED devices via area-selective growth is developed.

Blue-green-emitting solution-processable OLEDs have been realized by the incorporation of a saturated dendrimer onto alkynylgold(III) complexes.

Side-chain engineering of three new conjugated D–A terpolymers by varying the number of branching and linear alkyl chains is presented for OFET studies.

A pseudo-rigid fluorophore with multiple conformers enables highly reliable single-fluorophore ratiometric temperature sensing.

We test the potential of resonance energy transfer to enhance the performance of conjugated copolyelectrolyte donor–acceptor luminescent solar concentrators immobilised within a photoactive organic–inorganic ureasil waveguide.

A molecular donor STB-4 with a dithieno[2,3-d′:2′,3′-d′]benzo[1,2-b:4′,5′-b′]dithiophene core was synthesized for organic solar cells with a power conversion efficiency of 8.17%.

A new glutamic acid modified cellulose fibrous composite has been developed for Cu²⁺ and Hg²⁺ adsorption. The adsorption reaction follows a pseudo-second-order model, indicating the overall rates for the adsorption on GMC are controlled by chemical adsorption.

The pH-sensitive multifunctional fluorescent probe PNPM based on N-annulated perylene was firstly developed for detecting HOCl selectively. And the probe could detect pH and HOCl simultaneously, and was successfully employed to detect HOCl in serum and water samples.

Bithenopyrroledione based polymer semiconductors formed micro-sized fibers and were well dispersed in polymer semiconductor/PMMA blend films. The blend film transistors showed ambipolar behavior in a N₂ atmosphere with a hole mobility of 0.1 cm² V⁻¹ s⁻¹ and an electron mobility of 0.05 cm² V⁻¹ s⁻¹.

Kita-type coupling and Scholl-type oxidative cyclodehydrogenation to afford acene from binaphthalene and mesitylene is as an effective alternative to the reported approaches.

Rotation restricted multicarbazolyl substituted TTM radicals: red-shift of fluorescence emission with enhanced luminescence efficiency.

A unipolar thermoelectric device of poly[K_x(Ni-ethylenetetrathiolate)] was patterned via an electrochemical process on a prepatterned PET substrate with printed PDMS.

Cyano groups were introduced into two vinylene-bridged monomers and four polymers were synthesized, and their FET performances were fully studied.

An amino-substituted conjugated polymer (PPDI-F3N) is synthesized and used as a multifunctional interfacial layer to modify TiO₂ films in conventional planar perovskite solar cells, leading to a higher efficiency, better stability and reduced hysteresis.

Thermal annealing can be used to achieve thickness-insensitive non-fullerene polymer solar cells.

Two carbazole and diphenylamine terminated D–A type molecules were developed as TADF materials, achieving highly efficient blue and green emitting devices with low on-set voltages and reduced efficiency roll-off.

The efficient encapsulation of TNT by numerous hydrophobic cavities inside the hyperbranched conjugated polymer core allows for amplified fluorescence quenching detection of TNT down to 0.8 ppb.

A novel supramolecular system based on conjugated polymers is developed to realize specific targeting and imaging of organelles in living cells.

Dithieno[3,2-a:3′,2′-j][5,6,11,12]chrysene diimides (DTCDIs), a new class of organic dyes, with a twisted molecular backbone were designed and synthesized.

Halogenated conjugated molecules containing F, Cl, Br and I with high crystallinity were developed to show high electron mobilities of 1.3 cm² V⁻¹ s⁻¹ in field-effect transistors and power conversion efficiencies above 9% in non-fullerene solar cells.

A novel carbon material graphdiyne and thermally deposited Al–Al₂O₃ core–shell NPs were employed to realize flexible multilevel RRAM.