Meso-Linked Multiporphyrins as Model for Light Harvesting Systems: Review

Abstract

Nature has always been the fundamental source of inspiration for researchers to understand the complex biological functions. Photosynthesis is among the important natural phenomena and hence, gained interest towards developing the artificial photosynthetic reaction centers. Electron and energy transfer process between various porphyrin units within the multiporphyrin arrays is the important key in developing such systems. Long duration of charge separated state and spectral coverage scope of the accepting porphyrin units are another important factor that contribute to an efficient mimic of the photosynthetic reaction center. Meso-linked porphyrin architectures provide a great aspect in this regard because of short inter-porphyrinic distance with optimal dihedral angle. The present review highlights the design of various kinds of meso-linked multiporphyrins and study of electron and energy transfer processes between them that serve as an efficient model for light harvesting systems.

The Role of Porphyrinoid Photosensitizers for Skin Wound Healing

“…Porphyrins and analogs are a class of N-heterocyclic macrocycles well-known for their mediation in important biological functions, such as respiration and photosynthesis, but also by their role in a wide range of clinical and non-clinical applications that have high impacts on human life [1][2][3]. Natural tetrapyrrolic macrocycles like heme (iron(II) complex of PP-IX) and chlorophylls (Figure 1), but also the synthetic porphyrins and analogs ones (e.g., benzoporphyrins, chlorins, phthalocyanines) [4,5] are recognized to present unique structural, physicochemical, and photochemical features to be used in the development of dyes for dye-sensitized solar cells (DSSC) [6][7][8][9][10][11][12][13], (chemo) sensors [14][15][16][17][18][19][20], (photo)catalysts [21][22][23][24][25][26][27], biomarkers [14,28,29] or as therapeutic photosensitizers (PS) [30][31][32][33][34][35][36][37][38][39][40], among other applications [1]. The strong absorption usually exhibited by these highly ...…”