Enantioenriched helicenes and helicenoids containing main-group elements (B, Si, N, P)

K Dhbaibi, L Favereau, J Crassous - Chemical reviews, 2019 - ACS Publications
In this review, we discuss the rich chemistry of helicenes and helicenoids containing main-
group elements. Enantioenriched helicenic derivatives containing main-group elements B …

Merocyanines: Electronic Structure and Spectroscopy in Solutions, Solid State, and Gas Phase

AV Kulinich, AA Ishchenko - Chemical Reviews, 2024 - ACS Publications
Merocyanines, owing to their readily tunable electronic structure, are arguably the most
versatile functional dyes, with ample opportunities for tailored design via variations of both …

[HTML][HTML] Helicene-based chiroptical switches

H Isla, J Crassous - Comptes Rendus Chimie, 2016 - Elsevier
Helicenes are molecules with ortho-fused aromatic rings that adopt an inherently chiral
helical shape. This helical topology combined with the extended π-conjugated system …

Near-Infrared, Organic Chiroptic Switch with High Dissymmetry Factors

ST Bao, S Louie, H Jiang, Q Jiang, S Sun… - Journal of the …, 2023 - ACS Publications
Here we unveil a chiral molecular redox switch derived from PDI-based twistacenes─ c
hPDI [2] that has the remarkable attributes of high-intensity and a broadband chiral …

Reversible Quadruple Switching with Optical, Chiroptical, Helicity, and Macropattern in Self‐Assembled Spiropyran Gels

W Miao, S Wang, M Liu - Advanced Functional Materials, 2017 - Wiley Online Library
Enantiomeric glutamate gelators containing a spiropyran moiety are designed and found to
self‐assemble into a nanohelix through gelation. Upon alternating UV and visible light …

Highly fluorescent [7] carbohelicene fused by asymmetric 1, 2-dialkyl-substituted quinoxaline for circularly polarized luminescence and electroluminescence

H Sakai, S Shinto, J Kumar, Y Araki… - The Journal of …, 2015 - ACS Publications
A new 1, 2-dialkylquinoxaline-fused [7] carbohelicene ([7] Hl-NAIQx) was designed and
synthesized by asymmetrically introducing two alkyl chains onto the quinoxaline unit. Direct …

Functionalized cationic [4] helicenes with unique tuning of absorption, fluorescence and chiroptical properties up to the far-red range

IH Delgado, S Pascal, A Wallabregue, R Duwald… - Chemical …, 2016 - pubs.rsc.org
Unprecedented regioselective post-functionalization of racemic and enantiopure cationic
diaza [4] helicenes is afforded. The peripheral auxochrome substituents allow a general …

Limits of the Nuclear Ensemble Method for Electronic Spectra Simulations: Temperature Dependence of the (E)-Azobenzene Spectrum

S Sršeň, J Sita, P Slavíček… - Journal of Chemical …, 2020 - ACS Publications
We explore the range of applicability of the nuclear ensemble method (NEM) for quantitative
simulations of absorption spectra and their temperature variations. We formulate a “good …

Zwitterionic [4] helicene: a water-soluble and reversible pH-triggered ECD/CPL chiroptical switch in the UV and red spectral regions

S Pascal, C Besnard, F Zinna, L Di Bari… - Organic & …, 2016 - pubs.rsc.org
The chiroptical switching properties of a readily accessible and water-soluble diaza [4]
helicene are disclosed. This zwitterionic dye displays pH-dependent absorption and …

Circularly Polarised Luminescence from Helically Chiral “Confused” N,N,O,C‐Boron‐Chelated Dipyrromethenes (BODIPYs)

R Clarke, KL Ho, AA Alsimaree, OJ Woodford… - …, 2017 - Wiley Online Library
Chiral organic fluorophores have significant promise in the development of efficient emitters
of circularly polarized light. Herein we describe a helically chiral boron dipyrromethene …