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Aggregate 2023年第3期4卷 55-70页

作者： govardhana babu bodedla Xunjin Zhu Wai-Yeung Wong Department of Applied Biology&Chemical Technology and Research Institute for Smart Energy The Hong Kong Polytechnic UniversityHong KongP.R.China The Hong Kong Polytechnic University Shenzhen Research Institute ShenzhenP.R.China Department of Chemistry Hong Kong Baptist UniversityHong KongP.R.China

One of the major obstacles of porphyrins is the aggregation-caused quenching(ACQ)of photoluminescence due to the strong intermolecularπ–πinteraction of the planar porphyrin core in the solid ***,ACQ leads to the nonradiative deactivation of the photoexcited states which results in short-lived charge-separated states and thus low photoluminescence and singlet quantum *** phenomenon would limit the utilization of porphyrins in near-infrared fluorescent bioimaging,photodynamic therapy,photocatalytic hydrogen evolution,electrochemiluminescence,and chiroptical ***,to address the ACQ property of porphyrins and enhance the performance of the above applications,a limited number of AIEgen-decorated porphyrins have been designed,synthesized,and tested for their *** has been found that the introduction of AIEgens,such as tetraphenylethylene,diphenylacrylonitrile,(3,6-bis-(1-methyl-4-vinylpyridinium)-carbazole diiodide,and iridium motif into the porphyrin core,transformed the porphyrins from ACQ to aggregation-induced emission(AIE)in their solid state due to the reduced strong intermolecularπ–πstacking of ***,such porphyrins containing AIE features are employed as potential candidates in the above-mentioned *** this review,we summarize the AIEgen-decorated porphyrins which have been published to date,and also discuss the benefits of converting porphyrins from ACQ to AIE for enhanced performance within each *** far as we know,there is no review that summarizes the structures and applications of AIEgen-decorated porphyrins to ***,we presume that this review would be helpful to design more efficient AIEgen-decorated porphyrins for a wide range of applications in the future.

关键词： aggregation-caused quenching aggregation-induced emission AIE luminogen FRET and solid state emission porphyrin

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Design of AIEgen-based porphyrin for efficient heterogeneous photocatalytic hydrogen evolution Special Collection:Aggregation-Induced Processes and Functions

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Aggregate 2023年第5期4卷 199-206页

作者： govardhana babu bodedla Muhammad Imran Jianzhang Zhao Xunjin Zhu Wai-Yeung Wong Department of Applied Biology&Chemical Technology and Research Institute for Smart Energy The Hong Kong Polytechnic UniversityHong KongP.R.China The Hong Kong Polytechnic University Shenzhen Research Institute ShenzhenP.R.China Department of Chemistry Hong Kong Baptist UniversityHong KongP.R.China State Key Laboratory of Fine Chemicals and School of Chemical Engineering Dalian University of TechnologyDalianP.R.China

Tetraphenylethylene(TPE)-conjugated porphyrin TPE-ZnPF is synthesized in high yield and characterized by single-crystal X-ray *** propeller-shaped TPE groups not only enable exceptional aggregation-induced emission(AIE)in the solid state but also abolish the strongπ-πstacking of porphyrin moieties and thus prohibit aggregation-caused quenching(ACQ).TPE-ZnPF aggregates feature longlived photoexcited states,which subsequently suppress non-radiative decay channels and enhance emission ***,its aggregates show more efficient lightharvesting ability due to the Förster resonance energy transfer from the TPE energy donor to the porphyrin core energy acceptor,well-defined nanosphere morphology,and more efficient photoinduced charge separation than the porphyrin Ph-ZnPF,which possesses ACQ and agglomerated *** a result,an excellent photocatalytic hydrogen evolution rate(ηH_(2))of 56.20 mmol g^(‒1)h^(‒1)is recorded for TPE-ZnPF aggregates,which is 94-fold higher than that of the aggregates of Ph-ZnPF(0.60 mmol g^(‒1)h^(‒1))without the TPE groups.

关键词： aggregation-induced emission AIEgen porphyrin π-π-stacking photocatalytic hydrogen evolution

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New Isomeric porphyrin molecules conjugated with naphthalimide derivatives for photocatalytic H2 evolution

New Isomeric porphyrin molecules conjugated with naphthalimi...

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2019第四届中国能源材料化学研讨会

作者： Xunjin Zhu govardhana babu bodedla Lingling Li Department of Chemistry Hong Kong Baptist University

We have designed and synthesized a new array of push-pull isomeric naphthalimide-porphyrins Zn T(o-NI)PP,Zn T(m-NI)PP,Zn T(P-NI)PP by integration of four naphthalimide moieties on meso-substituion of porphyrin macrocycle through para/meta/ortho phenyl *** these isomers were employed as photosensitizers for the photocatalytic hydrogen production,they delivered high hydrogen production rate(ηH) compared to that of Zn *** the isomers,Zn T(P-NI)PP exhibited 139 times higher ηH2 than the Zn *** could be ascribed to the efficient exciton dissociation into holes and electrons at the photoexcited state of Zn T(P-NI)PP and then electrons were transferred to the proton through *** results indicate that introduction of naphthalimide at meso-position of porphyrin through para phenyl linker is a versatile strategy to improve the PHE of porphyrin based materials.

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