Highly Efficient and Direct Ultralong All‐Phosphorescence from Metal–Organic Framework Photonic Glasses

作者：Zhou Bo; Qi Zhenhong; Yan Dongpeng

来源：Angewandte Chemie, 2022, 134(39).

DOI：10.1002/ANGE.202208735

• Active Waveguide
• MOF Glasses
• Persistent Luminescence
• Quantum Yield
• Room-Temperature Phosphorescence

Realizing efficient and ultralong room‐temperature phosphorescence (RTP) is highly desirable but remains a challenge due to the inherent competition between excited state lifetime and photoluminescence quantum yield (PLQY). Herein, we report the bottom‐up self‐assembly of transparent metal–organic framework (MOF) bulk glasses exhibiting direct ultralong all‐phosphorescence (lifetime: 630.15?ms) with a PLQY of up to 75?% at ambient conditions. These macroscopic MOF glasses have high Young's modulus and hardness, which provide a rigid environment to reduce non‐radiative transitions and boost triplet excitons. Spectral technologies and theoretical calculations demonstrate the photoluminescence of MOF glasses is directly derived from the different triplet excited states, indicating the great capability for color‐tunable afterglow emission. We further developed information storage and light‐emitting devices based on the efficient and pure RTP of the fabricated MOF photonic glasses.(#br)A new class of transparent MOF glasses are made by a bottom‐up self‐assembly strategy. They exhibit a rare direct ultralong room‐temperature phosphorescence (RTP) output with high photoluminescence quantum yield (PLQY) of up to 75?%. Exploiting the highly efficient ultralong RTP of these MOF glasses, further photonic applications, such as all‐photonic information storage and light‐emitting devices, were developed.

• 单位
  北京师范大学