.png){kind=icon}
.png){kind=icon}
Return
Host-guest coupling modulation creates reversible photoresponsive intelligent supramolecular materials
.png){kind=icon}
PRE
AI
Z
L
W
Y
H
X
DOI：10.1007/s11426-026-3500-1.png)
.png){kind=icon}
Original request for help.png){kind=icon}
Share.png){kind=icon}
Save
Abstract
En 中文
Photochromic materials hold significant importance for intelligent optical devices and information security. However, they commonly exhibit limitations including slow response speeds, poor fatigue resistance, and insufficient reversibility at ambient temperature. Herein, a novel ternary supramolecular photochromic material, designated SOFs-TCB, was constructed utilizing the closo-B12H 12 2− anion as the electron donor, protonated 2,4,6-tris(4-pyridyl)-1,3,5-triazine (TPTH 3 3+ )as the electron acceptor, and cucurbit[7]uril (CB[7]) as the macrocyclic host. Upon 365 nm ultraviolet (UV) irradiation, SOFs-TCB demonstrates a distinct and reversible color transition from off-white to green. Crystallographic analysis and theoretical calculations reveal that the encapsulation of TPTH 3 3+ within CB[7] introduces steric hindrance that precisely regulates the donor-acceptor distance, thereby optimizing the photoinduced electron transfer pathway. This structural design facilitates efficient radical generation while substantially enhancing the material’s reversibility at room temperature. Owing to its rapid photoresponse and exceptional cycling stability, SOFs-TCB has been successfully implemented in dynamic information encryption, time-resolved displays, and multi-level anti-counterfeiting, encompassing pattern encryption, fingerprint identification, and smart responsive quick-response (QR) codes. This work not only delineates a design strategy for high-performance supramolecular photochromic materials but also advances the development of smart materials toward practical applications.
Keywords:
supramolecule
photochromism
intelligent material
closo-dodecaborate
radical pair
Journal
IF:
9.7
Papers:
5.4K
Citations:
1.5W
Organization
Cited Papers