Transient Activation Windows Program Adaptive Photochemical Responses
Abstract
ABSTRACT Biological systems regulate photochemical functions through transient activation states that determine when a stimulus can produce a response. Inspired by this principle, we develop a temporally gated molecular platform in which dynamic pH evolution controls visible‐light photochemistry. The system integrates a proton‐responsive charge‐transfer complex (CTC) sensitizer and a diarylethene photoswitch. Reversible protonation of the CTC enables chemical gating of triplet‐sensitized photochromism, which further generates a transient activation window via coupling with a dissipative, pH‐regulation network. As a result, identical optical stimuli lead to distinct outcomes depending on when they are applied during chemical evolution, effectively promoting chemical gating to temporal gating of molecular photoswitch. The progressive modulation of the sensitizer induces a time‐dependent attenuation of photochemical responses, enabling adaptive behaviors reminiscent of visual fatigue in biological photo‐reception.
Article Details
Authors (7)
Jinghong Dai
Key Laboratory for Advanced Materials and Joint International Research Laboratory of Precision Chemistry and Molecular Engineering, Feringa Nobel Prize Scientist Joint Research Center, School of Chemistry and Molecular Engineering
Zhiwei Zhang
Key Laboratory for Advanced Materials and Joint International Research Laboratory of Precision Chemistry and Molecular Engineering, Feringa Nobel Prize Scientist Joint Research Center, School of Chemistry and Molecular Engineering
Wenhui Wang
Key Laboratory for Advanced Materials and Joint International Research Laboratory of Precision Chemistry and Molecular Engineering, Feringa Nobel Prize Scientist Joint Research Center, School of Chemistry and Molecular Engineering, Frontiers Center for Materiobiology and Dynamic Chemistry
Muhua Ding
Key Laboratory for Advanced Materials and Joint International Research Laboratory of Precision Chemistry and Molecular Engineering Feringa Nobel Prize Scientist Joint Research Center School of Chemistry and Molecular Engineering East China University of Science & Technology Shanghai P. R. China
Fengpu Pan
Shenzhen International Graduate School Tsinghua University Shenzhen P. R. China
Junji Zhang
Key Laboratory for Advanced Materials and Joint International Research Laboratory of Precision Chemistry and Molecular Engineering, Feringa Nobel Prize Scientist Joint Research Center, School of Chemistry and Molecular Engineering
He Tian
Center of Electron Microscopy, School of Materials Science and Engineering, Zhejiang University, Hangzhou, China.