Li S, Ma R, Xu S, Zheng T, Fu G, Wu Y, Liao Z, Kuang Y, Hou Y, Wang D, Petkov PS, Simeonova K, Feng X, Wu LZ, Li XB, Zhang T (2022)
Publication Type: Journal article
Publication year: 2022
Book Volume: 144
Pages Range: 13953-13960
Journal Issue: 30
DOI: 10.1021/jacs.2c06042
Vinylene/olefin-linked two-dimensional covalent organic frameworks (v-2D-COFs) have emerged as advanced semiconducting materials with excellent in-plane conjugation, high chemical stabilities, and precisely tunable electronic structures. Exploring new linkage chemistry for the reticular construction of v-2D-COFs remains in infancy and challenging. Herein, we present a solid-state benzobisoxazole-mediated aldol polycondensation reaction for the construction of two novel isomeric benzobisoxazole-bridged v-2D-COFs (v-2D-COF-NO1 and v-2D-COF-NO2) with trans and cis configurations of benzobisoxazole. Interestingly, the isomeric benzobisoxazole linkers endow the two v-2D-COFs with distinct optoelectronic and electrochemical properties, ranging from light absorption and emission to charge-transfer properties. When employed as the photocathode, v-2D-COF-NO1 exhibits a photocurrent of up to ∼18 μA/cm2under AM 1.5G irradiation at -0.3 V vs reversible hydrogen electrode (RHE), which is twice the value of v-2D-COF-NO2 (∼9.1 μA/cm2). With Pt as a cocatalyst, v-2D-COF-NO1 demonstrates a photocatalytic hydrogen evolution rate of ∼1.97 mmol h-1g-1, also in clear contrast to that of v-2D-COF-NO2 (∼0.86 mmol h-1g-1) under identical conditions. This work demonstrates the synthesis of v-2D-COFs via benzobisoxazole-mediated aldol polycondensation with isomeric structures and distinct photocatalytic properties.
APA:
Li, S., Ma, R., Xu, S., Zheng, T., Fu, G., Wu, Y.,... Zhang, T. (2022). Direct Construction of Isomeric Benzobisoxazole-Vinylene-Linked Covalent Organic Frameworks with Distinct Photocatalytic Properties. Journal of the American Chemical Society, 144(30), 13953-13960. https://doi.org/10.1021/jacs.2c06042
MLA:
Li, Shengxu, et al. "Direct Construction of Isomeric Benzobisoxazole-Vinylene-Linked Covalent Organic Frameworks with Distinct Photocatalytic Properties." Journal of the American Chemical Society 144.30 (2022): 13953-13960.
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