Changing Benzoxazole Ring into Nonring Imine Linkages on Covalent Organic Frameworks with Tuning H2O2 Photosynthesis Performance

Xueqing Peng; Yue Tian; Tao Yang; Xi Wang; Chunmei Song; Aiguo Kong

doi:10.1021/acsami.4c06179

Changing Benzoxazole Ring into Nonring Imine Linkages on Covalent Organic Frameworks with Tuning H₂O₂ Photosynthesis Performance

Xueqing Peng, Yue Tian, Tao Yang, Xi Wang, Chunmei Song, Aiguo Kong

Institute for Advanced Study in Precision Spectroscopy

East China Normal University

Research output: Contribution to journal › Article › peer-review

8 Scopus citations

Abstract

Two π-conjugated covalent organic frameworks (COFs) with nonring imine or benzoxazole ring linkages were prepared by reacting 3,3′-dihydrooxybenzidine (BDOH) with 3,5-triformylbenzene (Tb) in the presence or absence of benzimidazole (BDOH-Tb-IM and BDOH-Tb-BO). Although two COFs indicated similar composition, crystalline structures, and morphologies, imine-based BDOH-Tb-IM exhibited a photocatalytic H₂O₂ production rate of 2490 μmol·g^-1·h^-1 in sacrificial reagent-free pure water, higher than that of benzoxazole-based BDOH-Tb-BO-a (1168 μmol·g^-1·h^-1). The higher photocatalytic activity of BDOH-Tb-IM was attributed to its more efficient photoinduced charge separation and utilization efficiency and different 2e^- ORR active sites over the two COFs. This study demonstrated an available ring effect to adjust photocatalytic performance between π-conjugated COFs.

Original language	English
Pages (from-to)	40180-40189
Number of pages	10
Journal	ACS Applied Materials and Interfaces
Volume	16
Issue number	30
DOIs	https://doi.org/10.1021/acsami.4c06179
State	Published - 31 Jul 2024

Keywords

benzoxazole
covalent organic framework
hydrogen peroxide
imine
photosynthesis
ring effect

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10.1021/acsami.4c06179

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title = "Changing Benzoxazole Ring into Nonring Imine Linkages on Covalent Organic Frameworks with Tuning H2O2 Photosynthesis Performance",

abstract = "Two π-conjugated covalent organic frameworks (COFs) with nonring imine or benzoxazole ring linkages were prepared by reacting 3,3′-dihydrooxybenzidine (BDOH) with 3,5-triformylbenzene (Tb) in the presence or absence of benzimidazole (BDOH-Tb-IM and BDOH-Tb-BO). Although two COFs indicated similar composition, crystalline structures, and morphologies, imine-based BDOH-Tb-IM exhibited a photocatalytic H2O2 production rate of 2490 μmol·g-1·h-1 in sacrificial reagent-free pure water, higher than that of benzoxazole-based BDOH-Tb-BO-a (1168 μmol·g-1·h-1). The higher photocatalytic activity of BDOH-Tb-IM was attributed to its more efficient photoinduced charge separation and utilization efficiency and different 2e- ORR active sites over the two COFs. This study demonstrated an available ring effect to adjust photocatalytic performance between π-conjugated COFs.",

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author = "Xueqing Peng and Yue Tian and Tao Yang and Xi Wang and Chunmei Song and Aiguo Kong",

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doi = "10.1021/acsami.4c06179",

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T1 - Changing Benzoxazole Ring into Nonring Imine Linkages on Covalent Organic Frameworks with Tuning H2O2 Photosynthesis Performance

AU - Peng, Xueqing

AU - Tian, Yue

AU - Yang, Tao

AU - Wang, Xi

AU - Song, Chunmei

AU - Kong, Aiguo

PY - 2024/7/31

Y1 - 2024/7/31

N2 - Two π-conjugated covalent organic frameworks (COFs) with nonring imine or benzoxazole ring linkages were prepared by reacting 3,3′-dihydrooxybenzidine (BDOH) with 3,5-triformylbenzene (Tb) in the presence or absence of benzimidazole (BDOH-Tb-IM and BDOH-Tb-BO). Although two COFs indicated similar composition, crystalline structures, and morphologies, imine-based BDOH-Tb-IM exhibited a photocatalytic H2O2 production rate of 2490 μmol·g-1·h-1 in sacrificial reagent-free pure water, higher than that of benzoxazole-based BDOH-Tb-BO-a (1168 μmol·g-1·h-1). The higher photocatalytic activity of BDOH-Tb-IM was attributed to its more efficient photoinduced charge separation and utilization efficiency and different 2e- ORR active sites over the two COFs. This study demonstrated an available ring effect to adjust photocatalytic performance between π-conjugated COFs.

AB - Two π-conjugated covalent organic frameworks (COFs) with nonring imine or benzoxazole ring linkages were prepared by reacting 3,3′-dihydrooxybenzidine (BDOH) with 3,5-triformylbenzene (Tb) in the presence or absence of benzimidazole (BDOH-Tb-IM and BDOH-Tb-BO). Although two COFs indicated similar composition, crystalline structures, and morphologies, imine-based BDOH-Tb-IM exhibited a photocatalytic H2O2 production rate of 2490 μmol·g-1·h-1 in sacrificial reagent-free pure water, higher than that of benzoxazole-based BDOH-Tb-BO-a (1168 μmol·g-1·h-1). The higher photocatalytic activity of BDOH-Tb-IM was attributed to its more efficient photoinduced charge separation and utilization efficiency and different 2e- ORR active sites over the two COFs. This study demonstrated an available ring effect to adjust photocatalytic performance between π-conjugated COFs.

KW - benzoxazole

KW - covalent organic framework

KW - hydrogen peroxide

KW - imine

KW - photosynthesis

KW - ring effect

UR - https://www.scopus.com/pages/publications/85198921278

U2 - 10.1021/acsami.4c06179

DO - 10.1021/acsami.4c06179

M3 - 文章

C2 - 39016448

AN - SCOPUS:85198921278

SN - 1944-8244

VL - 16

SP - 40180

EP - 40189

JO - ACS Applied Materials and Interfaces

JF - ACS Applied Materials and Interfaces

IS - 30

ER -

Changing Benzoxazole Ring into Nonring Imine Linkages on Covalent Organic Frameworks with Tuning H₂O₂ Photosynthesis Performance

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Keywords

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