S-Shaped Double Helicene Diimides: Synthesis, Self-Assembly, and Mechanofluorochromism.
Sign Up to like & getrecommendations! Published in 2021 at "Organic letters"
DOI: 10.1021/acs.orglett.1c00678
Abstract: Herein we present a synthesis of an S-shaped double helicene with fused imide moieties, achieving a contorted aromatic diimide (DHDI) with good fluorescence properties in both solution and the solid state. DHDI demonstrates distinct mechanofluorochromism… read more here.
Keywords: shaped double; mechanofluorochromism; double helicene; helicene diimides ... See more keywords
Double [4]Helicene-like Naphthobisbenzothiophene Diimides and Their Thienyl-S,S-dioxidized Derivatives with Attractive Solid-State Fluorescence and High Electron Affinity.
Sign Up to like & getrecommendations! Published in 2023 at "Organic letters"
DOI: 10.1021/acs.orglett.3c00001
Abstract: A series of double [4]helicene-like naphthobisbenzothiophene diimides and their thienyl-S,S-dioxidized derivatives are synthesized via MoCl5-catalyzed cyclization and m-CPBA-mediated oxidation reactions. The functional five-membered ring diimides show a helicene-like geometry, strong solid-state fluorescence, and deep LUMO… read more here.
Keywords: double helicene; naphthobisbenzothiophene diimides; helicene like; like naphthobisbenzothiophene ... See more keywords
Double-Helicene-Based Hole-Transporter for Perovskite Solar Cells with 22% Efficiency and Operation Durability
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DOI: 10.1021/acsenergylett.9b01949
Abstract: Amelioration of the mobility and, in particular, the thermal stability of a hole-transporting molecular semiconductor is a practicable strategy to attain the enhancement of both power conversion ef... read more here.
Keywords: hole transporter; perovskite solar; based hole; transporter perovskite ... See more keywords
Synthesis of sterically congested double helicene by alkyne cycloisomerization.
Sign Up to like & getrecommendations! Published in 2024 at "Chemical communications"
DOI: 10.1039/d4cc01573h
Abstract: Alkyne cycloisomerization of 2,7,10,15-tetra(ortho-alkynylphenyl)benzo[g,p]chrysene containing bulky 4-alkoxy-2,6-dimethylphenyl groups at the alkyne terminals selectively proceeded at the sterically crowded bay-region. The obtained double helicene adopts a distorted structure with a high racemization barrier due to the… read more here.
Keywords: sterically congested; congested double; double helicene; alkyne cycloisomerization ... See more keywords
Double helicene possessing B–N dative bonds built on 1,4-dihydropyrrolo[3,2-b]pyrrole core
Sign Up to like & getrecommendations! Published in 2025 at "Chemical Science"
DOI: 10.1039/d5sc00540j
Abstract: Just four steps are required to transform 2-nitrobenzaldehyde into centrosymmetric, quadrupolar N,B-doped nanographenes possessing two nitrogen–boron dative bonds. A convergent fragment coupling strategy allowed rapid access to key intermediates bearing the 1,4-dihydropyrrolo[3,2-b]pyrrole core. 2,6-Di-tert-butylpyridine turned… read more here.
Keywords: dative bonds; double helicene; dihydropyrrolo pyrrole; pyrrole core ... See more keywords