Highly conjugated electron rich thiophene antennas on phenothiazine and phenoxazine-based sensitizers for dye sensitized solar cells

Solution-processable phenothiazine and phenoxazine substituted fluorene cored nanotextured hole transporting materials for achieving high-efficiency OLEDs

“…63 3-Formyl-10-hexylphenoxazine ( 5 ) and 3-formyl-10-hexylphenothiazine ( 6 ) were obtained by Vilsmeier-Haack formylation reaction of the 10-hexylphenoxazine ( 3 ) or 10-hexylphenothiazine ( 4 ) according to the described procedure. 64 10-Hexyl-3-(2,7-dibromofluoren-9-ylmethylene)phenoxazine ( 7 ) was prepared by the reaction of 3-formyl-10-hexylphenoxazine ( 5 ) with an excess of 2,7-dibromofluorene. The aldehyde 5 (1.0 g, 3.39 mmol) and 2,7-dibromofluorene (1.3 g, 4.07 mmol) were dissolved in toluene (10 ml) at 100 °C.…”

Multi Stimuli Responsive Non‐Doped Red Emitting AIEE Active Phenothiazine‐Based Chalcones: Crystal Structure, Solvatochromism, Turn‐on Mechanofluorochromism and Acidochromism

“…Phenothiazine based D‐π‐A‐π‐D type dark‐red colored chalcones ( C2 − C4 ) were successfully synthesized in moderate yields by simple Claisen‐Schmidt condensation reaction between 7 ‐bromo‐ 10 ‐alkyl‐ 10H ‐phenothiazine‐ 3 ‐carbaldehyde [74] and acetone in the presence of aqueous sodium hydroxide followed by purification by column chromatography (Scheme 1). Chalcones were characterized by 1 H NMR, 13 C NMR, HRMS, and IR spectroscopy (Figures S1–S9).…”

Research on dye sensitized solar cells: recent advancement toward the various constituents of dye sensitized solar cells for efficiency enhancement and future prospects

“…Reddy et al orchestrated the development of four novel organic dyes designated CSORG6, CSORG7, CSORG8, and CSORG9. 120 The dyes used electron-dense thiophene spinoffs as the donor moiety and cyanoacrylic corrosive as an acceptor, with phenothiazine or phenoxazine acting as a crossover agent. The alkyl-substituted thiophene units may boost the dyes' light gathering potential.…”