Synthesis and resolution of multi-chiral carbonyl-N embedded hetero[7]helicenes for efficient circularly polarized luminescence DOI
Yuxiang Wang, Qi Liao,

Yabin Feng

et al.

Chemical Communications, Journal Year: 2024, Volume and Issue: 60(63), P. 8292 - 8295

Published: Jan. 1, 2024

Novel carbonyl-N embedded hetero[7]helicene diastereomers incorporating axially chiral binaphthyl were facilely synthesized and separated. The separated homochiral hetero[7]helicenes exhibit intense green photoluminescence circularly polarized luminescence (CPL) with dissymmetry factors (

Language: Английский

Biopolymer-based hydrogels for biomedical applications: Bioactivity and wound healing properties DOI
Fariba Mehvari, Vahid Ramezanzade, Jusung An

et al.

Coordination Chemistry Reviews, Journal Year: 2024, Volume and Issue: 518, P. 216093 - 216093

Published: July 25, 2024

Language: Английский

Citations

12
Oxa-helicenes embedding heptagons by stepwise cyclization of [6]helicene unit DOI
Jiang‐Feng Xing, Kang Li, Wan Xiang

et al.

Chinese Chemical Letters, Journal Year: 2025, Volume and Issue: unknown, P. 110982 - 110982

Published: Feb. 1, 2025

Language: Английский

Citations

0
Chiral nanographenes exhibiting circularly polarized luminescence DOI Creative Commons
V. Ravi Kumar,

J. Páez,

Sandra Míguez‐Lago

et al.

Chemical Society Reviews, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 1, 2025

Chiral nanographenes: molecular architecture, key constituents, and their circularly polarized luminescence.

Language: Английский

Citations

0
Recent development of azahelicenes showing circularly polarized luminescence DOI Creative Commons
Chihiro Maeda, Tadashi Ema

Chemical Communications, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 1, 2025

This feature article summarizes the recent developments of azahelicenes showing circularly polarized luminescence.

Language: Английский

Citations

0
Nonalternant B,N‐Embedded Helical Nanographenes Containing Azepines: Programmable Synthesis, Responsive Chiroptical Properties and Spontaneous Resolution into a Single‐Handed Helix DOI Creative Commons

Weiwen Zhuang,

Faan‐Fung Hung, Chi‐Ming Che

et al.

Angewandte Chemie International Edition, Journal Year: 2024, Volume and Issue: unknown

Published: July 19, 2024

Abstract Heteroatom‐embedded helical nanographenes (NGs) constitute an important and appealing class of intrinsically chiral materials. In this work, a series B,N‐embedded NGs (BN‐HNGs) bearing azepines was synthesized via stepwise regioselective cyclodehydrogenation. First, the phenyl‐ or nitrogen‐bridged dimers were efficiently clipped into highly congested model compounds 1 2 . Later, controllable Scholl reactions tetraphenyl‐tethered precursor generated 1, 7 8 new C−C bonds, thereby establishing robust method for preparation nonalternant BN‐HNGs with up to 31 fused rings. The bilayer nature unambiguously verified by X‐ray diffraction analysis. chirality transferred stereogenic boron centers upon fluoride coordination, concave‐concave structure comply skeleton. Notably, largest BN‐HNG ( 6 ) spontaneously resolved homochiral 4 helix as molecular spiral staircase during crystallization conglomerate formation at single‐crystal scale. large twisted C ‐symmetric π‐surface dynamic skeleton induced curved might have synergistic effects on self‐recognition enantiomers achieve intriguing spontaneous resolution behavior. chiroptical properties enantiomer further investigated, revealing that had strong response in visible range (400–700 nm).

Language: Английский

Citations

3
Nonalternant B,N‐Embedded Helical Nanographenes Containing Azepines: Programmable Synthesis, Responsive Chiroptical Properties and Spontaneous Resolution into a Single‐Handed Helix DOI Creative Commons

Weiwen Zhuang,

Faan‐Fung Hung, Chi‐Ming Che

et al.

Angewandte Chemie, Journal Year: 2024, Volume and Issue: 136(42)

Published: July 19, 2024

Abstract Heteroatom‐embedded helical nanographenes (NGs) constitute an important and appealing class of intrinsically chiral materials. In this work, a series B,N‐embedded NGs (BN‐HNGs) bearing azepines was synthesized via stepwise regioselective cyclodehydrogenation. First, the phenyl‐ or nitrogen‐bridged dimers were efficiently clipped into highly congested model compounds 1 2 . Later, controllable Scholl reactions tetraphenyl‐tethered precursor generated 1, 7 8 new C−C bonds, thereby establishing robust method for preparation nonalternant BN‐HNGs with up to 31 fused rings. The bilayer nature unambiguously verified by X‐ray diffraction analysis. chirality transferred stereogenic boron centers upon fluoride coordination, concave‐concave structure comply skeleton. Notably, largest BN‐HNG ( 6 ) spontaneously resolved homochiral 4 helix as molecular spiral staircase during crystallization conglomerate formation at single‐crystal scale. large twisted C ‐symmetric π‐surface dynamic skeleton induced curved might have synergistic effects on self‐recognition enantiomers achieve intriguing spontaneous resolution behavior. chiroptical properties enantiomer further investigated, revealing that had strong response in visible range (400–700 nm).

Language: Английский

Citations

1
Synthesis and resolution of multi-chiral carbonyl-N embedded hetero[7]helicenes for efficient circularly polarized luminescence DOI
Yuxiang Wang, Qi Liao,

Yabin Feng

et al.

Chemical Communications, Journal Year: 2024, Volume and Issue: 60(63), P. 8292 - 8295

Published: Jan. 1, 2024

Novel carbonyl-N embedded hetero[7]helicene diastereomers incorporating axially chiral binaphthyl were facilely synthesized and separated. The separated homochiral hetero[7]helicenes exhibit intense green photoluminescence circularly polarized luminescence (CPL) with dissymmetry factors (

Language: Английский

Citations

0