Chiral Memory‐Driven Helical Supramolecular Photodetector for Deciphering Circularly Polarized Light
Abstract
ABSTRACT Chiral π‐conjugated organic small molecules, due to their intrinsic chirality, well‐defined molecular structures and ease of modification, are promising for circularly polarized light (CPL) detection. However, their practical application is hindered by low absorption dissymmetry factor ( g abs ), arising from imbalanced electric and magnetic transition dipole moments ( µ and m ). Here, a template‐free method using chiral memory effect was reported to fabricate helical supramolecules with high g abs . Two chiral dinaphthocoronene tetraimides enantiomer pairs were synthesized: ( R )‐PDI‐( R )‐NI‐Ph/( S )‐PDI‐( S )‐NI‐Ph and ( S )‐PDI‐( R )‐NI‐Ph/( R )‐PDI‐( S )‐NI‐Ph. After annealing films at 350°C to remove chiral pendants, ( R )‐PDI‐( R )‐NI/( S )‐PDI‐( S )‐NI films showed much higher | g abs | (0.08) than the other set (0.01), with helical assemblies formed via chiral memory effect. Notably, large‐area arrays of ( R )‐PDI‐( R )‐NI films enabled CPL imaging, and a bionic artificial visual system was constructed with this film as “retina” and an artificial neural network as “neural center” for reliable CPL discrimination, offering a scalable strategy for high‐performance chiral optoelectronics.
Article Details
Authors (16)
Ke Gao
State Key Laboratory of Bioactive Substance and Function of Natural Medicines, CAMS Key Laboratory of Enzyme and Biocatalysis of Natural Drugs, and NHC Key Laboratory of Biosynthesis of Natural Products
Ye In Cho
School of Chemical and Biological Engineering Institute of Chemical Processes Seoul National University Seoul Republic of Korea
Wenkai Zhao
Frontiers 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, National Institute for Advanced Materials
Shijie Wang
Yunnan Key Laboratory of International Rivers and Transboundary Eco-Security/Ministry of Education Key Laboratory for Transboundary Eco-Security of Southwest China, Institute of International Rivers and Eco-Security, Yunnan University
Sang Hyuk Lee
Jaeyong Ahn
Department of Chemical Engineering
Wenda Zhao
Zhaoyu Wang
Frontiers 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, National Institute for Advanced Materials
Zhiwei Wang
International Joint Research Laboratory of Nano-Micro Architecture Chemistry, Institute of Theoretical Chemistry and College of Chemistry
Zhenping Li
Xingshuo Chu
State Key Laboratory of Porous Metal Materials School of Materials Science and Engineering Xi'an Jiaotong University Xi'an P. R. China
Pei Zhou
School of Chemistry, Engineering Research Center of Energy Storage Materials and Devices, Ministry of Education, Xi’an Key Laboratory of Sustainable Polymer Materials
Wei Ma
Guankui Long
Frontiers 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, National Institute for Advanced Materials
Joon Hak Oh
School of Chemical and Biological Engineering Institute of Chemical Processes Seoul National University Seoul Republic of Korea
Xiaobo Shang
State Key Laboratory for Porous Metal Materials Shaanxi International Research Center for Soft Matter School of Materials Science and Engineering Xi'an Jiaotong University Xi'an 710049 P.R. China