In:
Advanced Optical Materials, Wiley, Vol. 11, No. 10 ( 2023-05)
Abstract:
Herein, two kinds of amorphous solid‐state supramolecular systems with purely organic room temperature phosphorescence (RTP) from calix[3]phenothiazine ( C[3]Pz ) activated by 1,2‐/1,3‐dicyanobenzene ( 1,2‐/1,3‐DCB ) are reported. Different from macrocycle‐confined guest phosphorescence emission, RTP of these two amorphous solid‐state supramolecular systems is entirely from the 1,2‐/1,3‐DCB rivets C[3]Pz cavity to form dense supramolecular complex through CH … π interactions, leading to two different phosphorescence emissions at 566/524 nm under 430 nm excitation, respectively. Although C[3]Pz shows a regular arrangement in the crystal, the vibration dissipation of the benzene ring results in C[3]Pz emitting only fluorescence at 508 nm at room temperature. 1,2‐DCB and 1,3‐DCB can act as molecular rivets to fix the C[3]Pz to inhibit molecular vibration so as to reduce nonradiative relaxation, which enables C[3]Pz to achieve effective RTP emission with 20.8–36.8% quantum yields. This kind of guest‐activated host RTP, which is fairly rare in supramolecular systems, is successfully used for color QR codes and information encryption.
Type of Medium:
Online Resource
ISSN:
2195-1071
,
2195-1071
DOI:
10.1002/adom.202300326
Language:
English
Publisher:
Wiley
Publication Date:
2023
detail.hit.zdb_id:
2708158-8
