Triplet state stabilization and synergistic energy transfer in BOPHY-functionalized NU-1000 for enhanced photocatalytic aerobic oxidation

Y. Choe

doi:10.1039/D6DT00478D

Triplet state stabilization and synergistic energy transfer in BOPHY-functionalized NU-1000 for enhanced photocatalytic aerobic oxidation

2026-04-17

0

PRE

AI

Y

Y. Choe

S

Seung Jun Lee †

T

Tra Phuong Trinh

H

Hyung Joo Lee

H

Hyun Seok Lee

I

In Guk Song

H

Hyejin Kang

G

Gajendra Gupta *

J

Jun‐Hyun Kim *

C

Chul Hoon Kim *

C

Chang Yeon Lee *

DOI：10.1039/D6DT00478D

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Abstract

En 中文

Herein; we report the post-synthetic incorporation of an iodinated boron-difluoroboron hydrazone photosensitizer (I-BOPHYPhCOOH) into a zirconium-based metal–organic framework (NU-1000) via solvent-assisted ligand incorporation (SALI). In methanol; the spatial confinement within the hierarchical pores of NU-1000 significantly prolongs the triplet state lifetime of the anchored I-BOPHY to 3.81 microseconds; effectively reducing solvent-induced non-radiative decay pathways observed in protic bulk solution. This stabilization of long-lived triplet states; combined with efficient resonance energy transfer from the excited pyrene linkers; maximizes the light-harvesting and oxygen-activation efficiency of the system. Consequently; I-BOPHY@NU-1000 exhibits exceptional photocatalytic activity and high selectivity for the oxidation of sulfides to sulfoxides under mild aerobic conditions. This work demonstrates how the synergistic interplay between framework-induced triplet stabilization and intrinsic chromophore energy transfer can be exploited to construct superior MOF-based photocatalysts.

Keywords:

Triplet state stabilization

Energy transfer

BOPHY-functionalized MOF

Photocatalysis

Aerobic oxidation

Triplet state stabilization and synergistic energy transfer in BOPHY-functionalized NU-1000 for enhanced photocatalytic aerobic oxidation

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