Excited-state symmetry breaking is an ultrasensitive tool for probing microscopic electric fields

B Dereka, N Maroli, YM Poronik, DT Gryko… - Chemical …, 2024 - pubs.rsc.org
Microscopic electric fields are increasingly found to play a pivotal role in catalysis of
enzymatic and chemical reactions. Currently, the vibrational Stark effect is the main …

The effect of rigidity on the emission of quadrupolar strongly polarized dyes

B Szymański, SR Sahoo, R Valiev, O Vakuliuk… - New Journal of …, 2024 - pubs.rsc.org
Hybrid dyes comprising 1, 4-dihydropyrrolo [3, 2-b] pyrrole and two strongly electron-
withdrawing benzoxadiazole substituents, differing in their level of planarization, offer an …

Shedding new light on quadrupolar 1, 4-dihydropyrrolo [3, 2-b] pyrroles: impact of electron-deficient scaffolds over emission

B Szymański, SR Sahoo, O Vakuliuk, R Valiev… - Chemical …, 2025 - pubs.rsc.org
In this work, we disclose a series of seven quadrupolar centrosymmetric 1, 4-dihydropyrrolo
[3, 2-b] pyrroles (DHPPs) linked to the two peripheral, strongly electron-accepting …

1,4-Dihydropyrrolo[3,2-b]pyrroles with Two Embedded Heptagons via Alkyne Annulation

G Sanil, Ł Dobrzycki, MK Cyrański… - The Journal of …, 2025 - ACS Publications
Drastic changes to the character of the acidic catalyst enable the reversal of the double
alkyne benzannulation reaction output. In the presence of a strong Brønsted acid, 1, 4 …

Strongly Polarized π-Extended 1,4-Dihydropyrrolo[3,2-b]pyrroles Fused with Tetrazolo[1,5-a]quinolines

MB Teimouri, I Deperasinska, M Rammo… - The Journal of …, 2024 - ACS Publications
A straightforward route to 1, 4-dihydropyrrolo [3, 2-b] pyrroles comprised of two electron-
withdrawing quinoline or tetrazolo [1, 5-a] quinoline scaffolds has been developed. The …

Poly (dimethylsiloxane) as a room-temperature solid solvent for photophysics and photochemistry

JA Clark, S Robinson, EM Espinoza, D Bao… - Physical Chemistry …, 2024 - pubs.rsc.org
Medium viscosity strongly affects the dynamics of solvated species and can drastically alter
the deactivation pathways of their excited states. This study demonstrates the utility of poly …