A Full‐Spectrum Porphyrin–Fullerene D–A Supramolecular Photocatalyst with Giant Built‐In Electric Field for Efficient Hydrogen Production

• DOI: 10.1002/adma.202101026
• Publication Date: 2021-07-09T05:01:10Z
• Authors: Jun Yang; Jianfang Jing; Yongfa Zhu
• Keywords: Electron acceptor; Acceptor

Abstract A full‐spectrum (300–850 nm) responsive donor–acceptor (D–A) supramolecular photocatalyst tetraphenylporphinesulfonate/fullerene (TPPS/C 60 ) is successfully constructed. The theoretical spectral efficiency of TPPS/C as high 70%, offering the possibility full‐solar‐spectrum light harvesting. performs a highly efficient photocatalytic H 2 evolution rate 276.55 µmol h −1 (34.57 mmol g ), surpassing many reported organic photocatalysts. D–A structure effectively promotes electron transfer from TPPS to C , which beneficial reaction. Specifically, giant internal electric field in built via enhanced molecular dipole, dramatically charge separation (CS) by 2.35 times. Transient absorption spectra results show long‐lived CS state •+ –C •− structure, participation photogenerated electrons reduction Briefly, this work provides novel approach for designing high‐performance materials enhancing interfacial field.