Light‐Responsive Circularly Polarized Luminescence Polymers with INHIBIT Logic Function

Abstract

Dynamically tuning the emission of circularly polarized luminescence (CPL) materials through external stimuli is fascinating because of their fundamental and application interests. In this work, light‐responsive and luminescence‐tunable CPL‐active materials are synthesized by mixing achiral helical polymer containing vibration‐induced emission (VIE) molecules and spiropyran (SP) with a chiral helical polymer. Through regulating the distinct emission of VIE molecules and the reversible photoisomerization of SP, the dynamic Förster resonance energy transfer (FRET) can be explored to reversibly control the emission color of CPL in different states after light‐controlled isomerization. This project is the first comprehensive investigation of CPL‐active materials with VIE properties. Finally, taking the advantage of the multistimuli responsive CPL signal in different states, an “INHIBIT” logic gate with CPL signal output based on the combination of control of UV/vis light irradiation time and state alternation is constructed.

Frontiers in circularly polarized luminescence: molecular design, self-assembly, nanomaterials, and applications

“…[ [164][165][166] and Ma et al [167] have further demonstrated the "Matching Rule" is potentially applicable to numerous chiral matters and achiral fluorophores, clearly confirming the wide universality and superiority of the strategy. Although striking advancements have been and are being achieved continuously, the development of polymer-based CPL materials is still at the infant state.…”

Photoswitch-Based Fluorescence Encoding of Microspheres in a Limited Spectral Window for Multiplexed Detection

“…In addition, the photochromic compounds also should have good photostability, wide spectral shift between different states, and a high extinction coefficient. Thus, naphthopyran (NP) was chosen in this work instead of azobenzene, , spiropyran, , and dithienylethene. , In 2017, Inagaki et al reported the NP derivatives with simple synthesis and superior photochromic performance. To ensure a good spectral overlap with common fluorescent dyes emitting in the visible range, we synthesized NP1, NP2, and NP3 (Figure b) by introducing electron-donating groups (methoxy and piperidino groups) to red-shift the absorbance (see Figures S1–S9 for NMR and MS characterizations) .…”

Tunable Circularly Polarized Luminescent Supramolecular Systems: Approaches and Applications

“…Ma et al reported a photoactive achiral copolymer (Figure 1a) modified with spiropyrans. [23] Spiropyran units (SPCH) and vibration-induced emissive units (DPCH) were both introduced into the achiral polymer to achieve multicolor fluorescence through Förster resonance energy transfer (FRET). Surprisingly, before UV irradiation, no FRET was detected between DPCH and SPCH.…”