Tailoring optoelectronic properties of thieno[3,2-b]thiophene comprising homopolymers via electron acceptor moieties: thienopyrrolodione, 2,1,3-benzoselenadiazole, isoindigo

Highly stable bulk heterojunction organic solar cells based on asymmetric benzoselenadiazole‐oriented organic chromophores

“…24,25 In contrast, Se atom possesses a much larger atomic size, high dipole moment, and ability to form a quinoid structure because their coplanar structure might also increase the molecular planarity and rigidity of the molecular framework. 26,27 As claimed in previous studies, the presence of Se atom in D-A framework formed a head-to-head dimer which might facilitate the π-π stacking in thin film through strong intramolecular Se-N interactions. 28 It is also noteworthy that noncovalent Se-Se intermolecular interaction or selenium-aromatic interaction occurs in the molecules containing selenium atoms as a propensity of high polarizable features.…”

“…Also, Se‐containing BSe unit chromophores are barely applied in solar cells than their analog S‐containing BTD and its derivatives despite having almost the same chemical properties such as electronegativity and electron‐withdrawing nature 24,25 . In contrast, Se atom possesses a much larger atomic size, high dipole moment, and ability to form a quinoid structure because their coplanar structure might also increase the molecular planarity and rigidity of the molecular framework 26,27 . As claimed in previous studies, the presence of Se atom in D–A framework formed a head‐to‐head dimer which might facilitate the π‐π stacking in thin film through strong intramolecular Se–N interactions 28 .…”

Tailoring Thiazole Decorated Polymer with Benzoselenadiazole for Enhanced SO2 Sensing

“…They used a C[4]-DT LB fabricated sensor for the sensitive and selective detection of DCM . Additionally, incorporating a benzoselenadiazole ring in the CPs promotes electron-deficient behavior and decreases the band gap of the CPs. , Moreover, the strong polarizability of Se provides an electrophilic center that allows weak interactions with other molecules . The π–π interaction between the polymeric chain also accelerates the charge carrier mobility, leading to increased sensitivity toward targeted molecules. , …”

“…1−5 The interaction between the chains of the CPs decreases the HOMO−LUMO gap, resulting in improved electrical properties. 6,7 Moreover, the introduction of heteroatoms into the conjugated polymers can significantly enhance the performances of the derived devices. Recently, CPs have been considered as a preferable option to inorganic semiconductors for sensing materials used in detecting toxic gases.…”

“…14 The π−π interaction between the polymeric chain also accelerates the charge carrier mobility, leading to increased sensitivity toward targeted molecules. 7,15 Today, there is significant concern about the impact of industrial development and the release of large amounts of toxic gases and volatile organic compounds (VOCs) into the environment. One particularly harmful air pollutant, sulfur dioxide (SO 2 ), 16 is commonly emitted from activities such as burning fossil fuels, industrial processes, motor vehicle emissions, thermal power plants, and forest fires.…”