A Novel Covalently Linked Zn Phthalocyanine‐Zn Porphyrin Dyad for Dye‐sensitized Solar Cells

Abstract

A novel Zn phthalocyanine‐Zn porphyrin (ZnPc‐ZnPor) dyad (1), in which a zinc porphyrin moiety is linked covalently with an ABAB‐type zinc phthalocyanine moiety, has been designed and synthesized. The ZnPc‐ZnPor dyad 1 can absorb over a wide spectral range of visible light. The fluorescence spectrum of dyad 1 revealed an intramolecular efficient energy transfer from Zn porphyrin to Zn phthalocyanine. When dyad 1 was used as a light‐harvesting sensitizer for dye‐sensitized solar cells, the cell sensitized by dyad 1 provided a power conversion efficiency of 2.7 % under simulated air mass 1.5 global sunlight. The incident photon‐to‐current efficiency spectrum of the dyad 1 cell suggested the contribution of both components in dyad 1 for the current generation.

Direct Imaging of Precursor Adcomplex States during Cryogenic-Temperature On-Surface Metalation: Scanning Tunneling Microscopy Study on Porphyrin Array with Fe Adsorption at 78.5 K

“…Obtained metal–molecule complexes via on-surface metalation play an important role in extreme miniaturization of functional units and their atomically precise bottom-up fabrication process toward future high-functional devices. For this task, increasing attention focuses on porphyrin [see Figure ] and similar planar π-conjugated molecules as promising building blocks to self-assemble well-ordered one- or two-dimensional templates, , which allow us to design supramolecular architectures. , The synthesized metal–molecule complexes exhibit tremendous diversity in physical/chemical properties based on the guest metal species and thus provide a vast range of functionalities such as chemical sensor, − catalysts, − solar cells, − and information storage devices. − …”

Near‐Infrared‐Absorbing Metal‐Free Organic, Porphyrin, and Phthalocyanine Sensitizers for Panchromatic Dye‐Sensitized Solar Cells

“…Yamamoto et al synthesized aporphyrin-phthalocyanine dyad (Por-Phth). [97] Comparison of the absorbance spectrum of the dyad to the porphyrin subunit showedar elatively unchanged Soret band, suggesting that the interaction between porphyrina nd phthalocyanine moieties is negligible. However,d ye molecules were suggested to aggregate heavily on the TiO 2 surface.…”

Iron Phthalocyanine Incorporated Metallo-Supramolecular Polymer for Superior Electrochromic Performance with High Coloration Efficiency and Switching Stability

“…For this purpose, we synthesized an ABAB-type asymmetrical iron phthalocyanine moiety by the mixed statistical condensation of 4-(3-pentadecyl phenol)-phthalonitrile with 4-iodophthalonitrile and further attached a terpyridine ligand by the Suzuki coupling reaction . By this approach, the Pc spacer functionalized with two terpyridines at the opposite sites of the Pc ring, enabling a linear arrangement of the metallo-supramolecular polymer, could be constructed. , The synthesized Pc-based terpyridine ligand ( FePc-TP ) was complexed with Fe­(II) by reaction with Fe­(BF 4 ) 2 to yield an iron phthalocyanine incorporated iron metallo-supramolecular polymer ( Pc-Fe-polymer ) (Scheme ). The detailed synthetic procedures are given in the Experimental Section.…”

“…33 By this approach, the Pc spacer functionalized with two terpyridines at the opposite sites of the Pc ring, enabling a linear arrangement of the metallosupramolecular polymer, could be constructed. 34,35 The synthesized Pc-based terpyridine ligand (FePc-TP) was complexed with Fe(II) by reaction with Fe(BF 4 ) 2 to yield an iron phthalocyanine incorporated iron metallo-supramolecular polymer (Pc-Fe-polymer) (Scheme 1). The detailed synthetic procedures are given in the Experimental Section.…”