Highlights with ‘ADF’

Ambipolar Organic Field-Effect Transistors – Thienoisoindigo Derivatives

A series of substituted, unsymmetrical thienoisoindigo (TIIG) analogues were prepared, crystallized, and tested in thin-film transistors. TIIG and six modifications have been studied experimentally and computationally. The different intermolecular interactions lead to different stacking motifs,...

New single-layer 2D Covalent Organic Framework discovered: TANG-COF

The discovery of ballistic charge transport in graphene ignited the quest for two-dimensional (2D) materials and they are now used in various applications, such as electronics and materials science. In particular, 2D π-conjugated covalent organic...

Improved deep-blue thermally activated delayed fluorescence emitter: TMCz-BO

Traditionally, OLEDs only achieved an internal quantum efficiency of 25% since only singlet excited states can be used to emit fluorescence. The other 75% is excited to a triplet state and recently heavy metals have...

Improved absolute configuration determination of complex molecules with VCD

All biological systems are three-dimensional and determining the exact configuration of the system is important for pharmaceutical applications and drug design. However, determining 3D-structures is complicated and difficult. Vibrational circular dichroism is a method using...

Double hybrids: recommendations for accurate thermochemistry & kinetics

Double hybrids especially excel in thermochemistry, kinetics, transition metal chemistry, and the description of strained organic systems. They often provide improvements over the best performing, dispersion-corrected hybrid functionals. With the recent efficient MP2 implementation in...

Fast & efficient plasmonic excitations in metallic nanoparticles

The great potential of employing tight-binding approximations after a regular DFT ground state calculation has been demonstrated in a recent paper. With the TD-DFT+TB approach (see thesis by Robert Rüger), plasmon resonances in large silver, gold,...

Unraveling structure and reactivity of Pt complexes: NMR & EPR

A recent combined experimental and theoretical study by the Kaupp group scrutinizes transition metal phosphanide chemistry which helps to understand catalytic processes involved in C-P bond formation and breaking. The reaction of a Pt-PPh3 with...

Rationalize your Chemical Reactions

A recent Nature protocol paper describes a, step-by-step, easy to follow protocol to assist scientists with rationalizing factors controlling molecular reactivity [1]. Our close collaborators from the theoretical chemistry department at the VU describe how...

Microstructure of doped lead halide perovskites from solid-state NMR

Multi-component lead halide perovskites have recently emerged as new promising materials for solar cells and light emitting devices. Essential to their remarkable performance is the notion of doping with inorganic and organic cations such as...

Geometry Optimization with the Optimally Tuned Range-Separated Hybrid Functional

The state-of-the-art DFT is, as it turns out, too accurate for gas-phase calculations to be relevant to materials research.  Dielectric effects can be readily accounted for within the optimally tuned range-separated hybrid (OT-RSH) functional framework...