## 1 Introduction  
Phthalocyanines (PCs) are synthetic, tetrapyrrolic macrocycles revealing interesting physicochemical properties and many practical applications in technology [1]. Pcs have been successfully utilized as green chemistry catalysts for electrochemical reduction of CO\({}_{2}\)[2, 3] or as components in alkaline membrane fuel cells [4]. Moreover, Pcs are considered useful materials for chemical sensors, non-linear optics applications, and data storage [5]. One of the unique features of Pcs is their ability to generate singlet oxygen and other reactive oxygen species upon excitation with visible light. Therefore, Pcs have been applied or at least considered as promising candidates for photosensizers (PSs) in photodynamic therapy (PDT) and photodynamic antimicrobial chemotherapy (PACT) [6, 7, 8]. Tetrapyrazinoporphyrazines constitute a distinct class of Pcs aza-analogues. Both metal-free tetrapyrazinoporphyrazines and their metal complexes have demonstrated interesting optical and electrochemical properties and also potential applications in technology and medicine [9, 10, 11, 12, 13, 14, 15, 16]. Tetrapyrazinoporphyrazines similarly to Pcs reveal comparable abilities to generate singlet oxygen [17]. Moreover, they exhibit excellent electrochemical properties, which make their application in Li/SOCl\({}_{2}\) batteries possible and has resulted in improved performance in terms of their capacity and discharge voltage [18]. Implementing a thiophene moiety into the designed macrocycle was related to encouraging reports on photosensizers substituted with this heterocycle in the periphery. Brominated BODIPYs with thiophene rings were studied as potential photosensitizers for photodynamic therapy using a low irradiance excitation [19]. The presence of thiophene rings significantly influenced the red-shifts in their absorption maxima. In another study, halogenated thien[3,2-\(b\)] thiophene fused BODIPY revealed not only long wavelength absorptions at maximum up to 720 nm but also photocytotoxicity upon irradiation with light NIR laser in living HeLa cells [20]. In the study performed by [PERSON] et al., a near-infrared and lysosomal targeting thiophene-BODIPY photosensitizer was studied in terms of its photocytotoxicity against A549 cancer cells [21]. Moreover, [PERSON] et al. revealed photoinduced anti-inflammatory activities of a thiophene-substituted subphthalocyanine derivative on mammalian macrophages in vitro [22]. They noted this compound's influence on the extracellular levels of inflammatory cytokines and their gene expression levels. Studies that have been presented so far for various phthalocyanines and porphyazines revealed the potential of thiophene rings in the modification of their physicochemical properties. [PERSON] et al. reported that conjugating thiophene ring with phthalocyanine systems could significantly improve their multi-proton absorption cross-section [23], which can be of value for potential applications of these macrocycles in the third-order nonlinear optics. In another study, a self-assembled monolayer of cobalt thiopheneethoxy-substituted phthalocyanine presented interesting electrocatalytic behavior towards catalytic oxidation of thiocyanate, L-cysteine, and 2-mercaptoethanolhand [24]. Many papers have been published on porphyazines with annulated strongly electron-withdrawing thia- and selenodiaazole rings, which revealed distinct structural, electronic, UV-Vis spectroscopic, and electrochemical features [25]. Unfortunately, there are few examples of porphyazines containing 5-membered heteroaromatic rings substituted directly to the \(\beta\)-position of the macrocyclic system. One example is a coplanar binuclear magnesium(II) porphyrazine bearing six bis-(trimethylthiophenyl) photochromic functionalities at the periphery, which was considered as a molecule of potential applications for technology in information data storage, and as a component of imaging devices and switches [26].