Tubular All-Benzene Nanocarbon with Evolving Excited-State Chirality

Gaolei Li; Xueli Wang; Liang Liang Mao; Jia Nan Gao; Xueliang Shi; Hongwei Li; Zi Tong Li; Zi Ye Huo; Yiming Chen; Hai Bo Yang; Jinquan Chen; Chen Ho Tung; Li Zhu Wu; Huan Cong

doi:10.1002/anie.202518587

Tubular All-Benzene Nanocarbon with Evolving Excited-State Chirality

Gaolei Li
, Xueli Wang
, Liang Liang Mao
, Jia Nan Gao
, Xueliang Shi
, Hongwei Li
, Zi Tong Li
, Zi Ye Huo
, Yiming Chen
, Hai Bo Yang
, Jinquan Chen^*
, Chen Ho Tung
, Li Zhu Wu
, Huan Cong^*

^*Corresponding author for this work

CAS - Technical Institute of Physics and Chemistry
East China Normal University
Peking University

Research output: Contribution to journal › Article › peer-review

7 Scopus citations

Abstract

Molecular nanocarbons with precisely defined conjugated scaffolds can provide an ideal platform for investigating mechanistic insights into photophysical properties. Here, we report the synthesis and time-resolved spectroscopic characterization of two isomeric tubular all-benzene nanocarbon (TANC) molecules, named meso- and chiral-TANC, respectively. Structurally, they feature triple covalent linkages, with different connectivity, between coaxially stacked cycloparaphenylene units. While meso-TANC maintains conformational rigidity, chiral-TANC shows photo-induced dynamic helicity. Femtosecond transient absorption (TA) and time-resolved circularly polarized luminescence (TRCPL) spectroscopy demonstrate that chiral-TANC undergoes ultrafast relaxation accompanied by untwisting motions within 8 ps upon photoexcitation, establishing the direct correlation between photo-induced conformational evolution and chiroptical dynamics in heteroatom-free, fully conjugated molecules.

Original language	English
Article number	e202518587
Journal	Angewandte Chemie - International Edition
Volume	64
Issue number	49
DOIs	https://doi.org/10.1002/anie.202518587
State	Published - 1 Dec 2025

Keywords

All-benzene scaffold
Circularly polarized luminescence
Excited-state chirality
Time-resolved spectroscopy
Tubular nanocarbons

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10.1002/anie.202518587

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title = "Tubular All-Benzene Nanocarbon with Evolving Excited-State Chirality",

abstract = "Molecular nanocarbons with precisely defined conjugated scaffolds can provide an ideal platform for investigating mechanistic insights into photophysical properties. Here, we report the synthesis and time-resolved spectroscopic characterization of two isomeric tubular all-benzene nanocarbon (TANC) molecules, named meso- and chiral-TANC, respectively. Structurally, they feature triple covalent linkages, with different connectivity, between coaxially stacked cycloparaphenylene units. While meso-TANC maintains conformational rigidity, chiral-TANC shows photo-induced dynamic helicity. Femtosecond transient absorption (TA) and time-resolved circularly polarized luminescence (TRCPL) spectroscopy demonstrate that chiral-TANC undergoes ultrafast relaxation accompanied by untwisting motions within 8 ps upon photoexcitation, establishing the direct correlation between photo-induced conformational evolution and chiroptical dynamics in heteroatom-free, fully conjugated molecules.",

keywords = "All-benzene scaffold, Circularly polarized luminescence, Excited-state chirality, Time-resolved spectroscopy, Tubular nanocarbons",

author = "Gaolei Li and Xueli Wang and Mao, \{Liang Liang\} and Gao, \{Jia Nan\} and Xueliang Shi and Hongwei Li and Li, \{Zi Tong\} and Huo, \{Zi Ye\} and Yiming Chen and Yang, \{Hai Bo\} and Jinquan Chen and Tung, \{Chen Ho\} and Wu, \{Li Zhu\} and Huan Cong",

note = "Publisher Copyright: {\textcopyright} 2025 Wiley-VCH GmbH.",

year = "2025",

month = dec,

day = "1",

doi = "10.1002/anie.202518587",

language = "英语",

volume = "64",

journal = "Angewandte Chemie - International Edition",

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TY - JOUR

T1 - Tubular All-Benzene Nanocarbon with Evolving Excited-State Chirality

AU - Li, Gaolei

AU - Wang, Xueli

AU - Mao, Liang Liang

AU - Gao, Jia Nan

AU - Shi, Xueliang

AU - Li, Hongwei

AU - Li, Zi Tong

AU - Huo, Zi Ye

AU - Chen, Yiming

AU - Yang, Hai Bo

AU - Chen, Jinquan

AU - Tung, Chen Ho

AU - Wu, Li Zhu

AU - Cong, Huan

PY - 2025/12/1

Y1 - 2025/12/1

N2 - Molecular nanocarbons with precisely defined conjugated scaffolds can provide an ideal platform for investigating mechanistic insights into photophysical properties. Here, we report the synthesis and time-resolved spectroscopic characterization of two isomeric tubular all-benzene nanocarbon (TANC) molecules, named meso- and chiral-TANC, respectively. Structurally, they feature triple covalent linkages, with different connectivity, between coaxially stacked cycloparaphenylene units. While meso-TANC maintains conformational rigidity, chiral-TANC shows photo-induced dynamic helicity. Femtosecond transient absorption (TA) and time-resolved circularly polarized luminescence (TRCPL) spectroscopy demonstrate that chiral-TANC undergoes ultrafast relaxation accompanied by untwisting motions within 8 ps upon photoexcitation, establishing the direct correlation between photo-induced conformational evolution and chiroptical dynamics in heteroatom-free, fully conjugated molecules.

AB - Molecular nanocarbons with precisely defined conjugated scaffolds can provide an ideal platform for investigating mechanistic insights into photophysical properties. Here, we report the synthesis and time-resolved spectroscopic characterization of two isomeric tubular all-benzene nanocarbon (TANC) molecules, named meso- and chiral-TANC, respectively. Structurally, they feature triple covalent linkages, with different connectivity, between coaxially stacked cycloparaphenylene units. While meso-TANC maintains conformational rigidity, chiral-TANC shows photo-induced dynamic helicity. Femtosecond transient absorption (TA) and time-resolved circularly polarized luminescence (TRCPL) spectroscopy demonstrate that chiral-TANC undergoes ultrafast relaxation accompanied by untwisting motions within 8 ps upon photoexcitation, establishing the direct correlation between photo-induced conformational evolution and chiroptical dynamics in heteroatom-free, fully conjugated molecules.

KW - All-benzene scaffold

KW - Circularly polarized luminescence

KW - Excited-state chirality

KW - Time-resolved spectroscopy

KW - Tubular nanocarbons

UR - https://www.scopus.com/pages/publications/105018310513

U2 - 10.1002/anie.202518587

DO - 10.1002/anie.202518587

M3 - 文章

AN - SCOPUS:105018310513

SN - 1433-7851

VL - 64

JO - Angewandte Chemie - International Edition

JF - Angewandte Chemie - International Edition

IS - 49

M1 - e202518587

ER -

Tubular All-Benzene Nanocarbon with Evolving Excited-State Chirality

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Keywords

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