Photochemically and Thermally Programmed Optical Multi-States from a Single Diacetylene-Functionalized Cyanostilbene Luminogen.

Adv Sci (Weinh)

Department of Polymer-Nano Science and Technology, Department of Nano Convergence Engineering, Jeonbuk National University, Jeonju, 54896, Republic of Korea.

Published: March 2024

AI Article Synopsis

  • * A new compound called diacetylene-functionalized cyanostilbene luminogen (DACSM) is created by linking diacetylene and cyanostilbene to generate multiple molecular states using only one dye.
  • * The DACSM exhibits tunable properties through thermal and photochemical reactions, leading to applications like switchable optical patterns and secure coding methods.

Article Abstract

To develop advanced optical systems, many scientists have endeavored to create smart optical materials which can tune their photophysical properties by changing molecular states. However, optical multi-states are obtained usually by mixing many dyes or stacking multi-layered structures. Here, multiple molecular states are tried to be generated with a single dye. In order to achieve the goal, a diacetylene-functionalized cyanostilbene luminogen (DACSM) is newly synthesized by covalently connecting diacetylene and cyanostilbene molecular functions. Photochemical reaction of cyanostilbene and topochemical polymerization of diacetylene can change the molecular state of DACSM. By thermal stimulations and the photochemical reaction, the conformation of polymerized DACSM is further tuned. The synergetic molecular cooperation of cyanostilbene and diacetylene generates multiple molecular states of DACSM. Utilizing the optical multi-states achieved from the newly developed DACSM, switchable optical patterns and smart secret codes are successfully demonstrated.

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Source
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC10953535PMC
http://dx.doi.org/10.1002/advs.202307791DOI Listing

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