Computational investigations of the detailed mechanism of reverse intersystem crossing in inverted singlet–triplet gap molecules

D Valverde, CT Ser, G Ricci, K Jorner… - … Applied Materials & …, 2024 - ACS Publications
Inverted singlet–triplet gap (INVEST) materials have promising photophysical properties for
optoelectronic applications due to an inversion of their lowest singlet (S1) and triplet (T1) …

Artificial design of organic emitters via a genetic algorithm enhanced by a deep neural network

AK Nigam, R Pollice, P Friederich, A Aspuru-Guzik - Chemical Science, 2024 - pubs.rsc.org
The design of molecules requires multi-objective optimizations in high-dimensional
chemical space with often conflicting target properties. To navigate this space, classical …

Enhanced inverted singlet–triplet gaps in azaphenalenes and non-alternant hydrocarbons

MH Garner, JT Blaskovits… - Chemical Communications, 2024 - pubs.rsc.org
Inverted singlet–triplet gaps may lead to novel molecular emitters if a rational design
approach can be achieved. We uncover a substituent strategy that enables tuning of the gap …

Ultrafast computational screening of molecules with inverted singlet–triplet energy gaps using the Pariser–Parr–Pople semiempirical quantum chemistry method

K Jorner, R Pollice, C Lavigne… - The Journal of Physical …, 2024 - ACS Publications
Molecules with an inverted energy gap between their first singlet and triplet excited states
have promising applications in the next generation of organic light-emitting diode (OLED) …

Reverse intersystem crossing dynamics in vibronically modulated inverted singlet–triplet gap system: A Wigner phase space study

P Karak, P Manna, A Banerjee, K Ruud… - The Journal of …, 2024 - ACS Publications
We inspect the origin of the inverted singlet–triplet gap (INVEST) and slow change in the
reverse intersystem crossing (rISC) rate with temperature, as recently observed. A Wigner …

Molecular geometry impact on deep learning predictions of inverted singlet–triplet gaps

L Barneschi, L Rotondi, D Padula - The Journal of Physical …, 2024 - ACS Publications
We present a deep learning model able to predict excited singlet–triplet gaps with a mean
absolute error (MAE) of≈ 20 meV to obtain potential inverted singlet–triplet (IST) …

Searching the best double-hybrid density functional to correctly predict the singlet–triplet excited-state inversion in organic systems

A Derradji, D Valverde, É Brémond… - The Journal of …, 2024 - ACS Publications
The theoretically disclosed, and experimentally confirmed, energy inversion of the lowest
singlet (S 1) and triplet (T 1) excited states of organic molecules (ie, Hund's rule violation) is …

Computational design of multiple resonance-type bn molecules for inverted singlet and triplet excited states

YJ Pu, D Valverde, JC Sancho-García… - The Journal of Physical …, 2023 - ACS Publications
A computational design of linearly extended multiple resonance (MR)-type BN molecules
based on DABNA-1 is proposed herein in the quest to find potential candidates that exhibit a …

Singlet–Triplet Inversions in Through-Bond Charge-Transfer States

JT Blaskovits, C Corminboeuf… - The journal of physical …, 2024 - ACS Publications
Molecules where the lowest excited singlet state is lower in energy than the lowest triplet are
highly promising for a number of organic materials applications as efficiency limitations …

Experimental and computational studies of the optical properties of 2, 5, 8-tris (phenylthiolato) heptazine with an inverted singlet–triplet gap

D Blasco, RT Nasibullin, RR Valiev, M Monge… - Physical Chemistry …, 2024 - pubs.rsc.org
Photophysical properties of the three-fold symmetric 2, 5, 8-tris (phenylthiolato) heptazine
molecule (1) are studied from combined experimental and computational viewpoints. The …