Designing chiral organic small molecules for circularly polarized light detection via group theory
4 affiliations
- 1State Key Laboratory for Mechanical Behavior of Materials Xi'an Jiaotong University Xi'an The People's Republic of China
- 2Frontiers Science Center for New Organic Matter, Tianjin Key Lab for Rare Earth Materials and Applications, Renewable Energy Conversion and Storage Center (RECAST), School of Materials Science and Engineering Nankai University Tianjin The People's Republic of China
- 3Institute of Molecular Engineering Plus, College of Chemistry Fuzhou University Fuzhou The People's Republic of China
- 4State Key Laboratory of Applied Organic Chemistry (SKLAOC), Key Laboratory of Special Function Materials and Structure Design (MOE), College of Chemistry and Chemical Engineering Lanzhou University Lanzhou The People's Republic of China
Abstract
Circularly polarized light (CPL) photodetectors are of great interest for applications in polarization imaging, information encryption, and optical communication. Chiral organic small molecules have emerged as attractive active materials due to their structural tunability, well‐defined intrinsic chirality, and solution processability. However, in most chiral organic small molecule systems, molecular‐scale effects and optical selection rules lead to mismatch in magnitude and spatial orientation between the magnetic and electric transition dipole moments, resulting in low absorption dissymmetry factors ( g abs ) and poor compatibility between chiroptical response and charge transport. This review summarizes the recent progress in chiral organic small molecules for CPL detection from the perspective of group theory. By comparing the representative chiral point groups such as C 1 , C n , and D n , we elucidate how point group symmetry imposes constraints on the relative arrangement of transition dipole moments, thereby governing the molecular g abs . In particular, the D 2 point group can enforce both electric and magnetic transition dipole alignment along the principal molecular axes, yielding an optimal orientation (0° or 180°) and thus enabling the high g abs . Recent advances in chiral organic small molecules D 2 point group demonstrate their potential to simultaneously achieve strong chiroptical responses and efficient charge transport, offering a clear structural guideline for the rational design of high‐performance CPL photodetectors based on chiral organic small molecules. image
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BibTeX
@article{li2026designing,
title = {{Designing chiral organic small molecules for circularly polarized light detection via group theory}},
author = {Z K Li and Wenkai Zhao and Jiajun Fu and Wenhan Wu and Xingshuo Chu and Zihao Xu and Yu-Wu Zhong and Hailong Zhang and Wei Ma and Guankui Long and Xiaobo Shang},
journal = {InfoMat},
year = {2026},
month = jun,
doi = {10.1002/inf2.70155},
url = {https://doi.org/10.1002/inf2.70155},
note = {CC BY},
}
RIS
TY - JOUR
TI - Designing chiral organic small molecules for circularly polarized light detection via group theory
AU - Z K Li
AU - Wenkai Zhao
AU - Jiajun Fu
AU - Wenhan Wu
AU - Xingshuo Chu
AU - Zihao Xu
AU - Yu-Wu Zhong
AU - Hailong Zhang
AU - Wei Ma
AU - Guankui Long
AU - Xiaobo Shang
PY - 2026
DA - 2026/06/09
JO - InfoMat
DO - 10.1002/inf2.70155
UR - https://doi.org/10.1002/inf2.70155
AB - Circularly polarized light (CPL) photodetectors are of great interest for applications in polarization imaging, information encryption, and optical communication. Chiral organic small molecules have emerged as attractive active materials due to their structural tunability, well‐defined intrinsic chirality, and solution processability. However, in most chiral organic small molecule systems, molecular‐scale effects and optical selection rules lead to mismatch in magnitude and spatial orientation between the magnetic and electric transition dipole moments, resulting in low absorption dissymmetry factors ( g abs ) and poor compatibility between chiroptical response and charge transport. This review summarizes the recent progress in chiral organic small molecules for CPL detection from the perspective of group theory. By comparing the representative chiral point groups such as C 1 , C n , and D n , we elucidate how point group symmetry imposes constraints on the relative arrangement of transition dipole moments, thereby governing the molecular g abs . In particular, the D 2 point group can enforce both electric and magnetic transition dipole alignment along the principal molecular axes, yielding an optimal orientation (0° or 180°) and thus enabling the high g abs . Recent advances in chiral organic small molecules D 2 point group demonstrate their potential to simultaneously achieve strong chiroptical responses and efficient charge transport, offering a clear structural guideline for the rational design of high‐performance CPL photodetectors based on chiral organic small molecules. image
SN - 2567-3165
SN - 2770-5110
ER -