Solvent assisted fluorescence modulation of a C₃-symmetric organogelator

Directed Self‐Organization Ensured Enhancement of Charge Carrier Mobilities in a Star‐Shaped Organic Semiconductor

“…It was clear from the thermogram that the molecule was reversibly stable for subsequent heating and cooling cycles up to 400 °C. In the pure form, the solid compound did not exhibit any intermediate thermal phase transitions between room temperature and melting point, which affirmed the absence of any liquid‐crystalline phase in its thermal cycle unlike in the earlier report of its homologue …”

“…The oxadiazole units are conjugated on the outside to bis‐thiophene units which is recognized for its hole transporting properties (red circles). Synthesis, solution‐state photophysical properties of FDT‐8 and self‐assembling behaviour of its higher alkyl homologue has been reported earlier …”

Effect of Atomic‐Scale Differences on the Self‐Assembly of Thiophene‐based Polycatenars in Liquid Crystalline and Organogel States

“…The solution with lower concentration showedm onoexponential decay with as ingle excited species (T 1 = 1.05 ns (100 %)). [14,22] At this point, we were curious to comparet he emission of the LC aggregates in the thin films and gels of 1c and 2c.A n overlay of the emission spectra of these compoundsi nt he solution, gel, and thin-film states showed that the emission intensity of the LC thin films was quite high compared with the solution and gel states ( Figure 18). Similar behavior was observedf or 2c.T he fluorescencel ifetimes of the excited species formed in the 20 mm and 5.51 mm solutionsof2c in decane were measured by monitoring at their emission maxima( l = 487 nm for the dilute solutiona nd l = 538 nm for the concentrateds olution).T he 20 mm solutions howed as ingle species (T 1 = 0.55 ns (100 %)).…”

“…For compound 2c,b oth blueshifted and slightly redshifted bands are present in the excitation spectra,w hich corresponds to the formation of both H-and J-aggregates, with the latter being the major product. [14,22] At this point, we were curious to comparet he emission of the LC aggregates in the thin films and gels of 1c and 2c.A n overlay of the emission spectra of these compoundsi nt he solution, gel, and thin-film states showed that the emission intensity of the LC thin films was quite high compared with the solution and gel states (Figure 18). It is surprising to see that the thin filmo f1c exhibited fivefold-enhanced emission (Figure 18 a), whereas 2c exhibited ninefold-enhanced emission with respectt ot he solution state (Figure 18 b).…”

Supramolecular polymerization of hydrogen-bonded rosettes with anthracene chromophores: regioisomeric effect on nanostructures

“…This spectral change implies that the π-conjugated units of 1 stack in a face-to-face arrangement, typically classified as H-type stacking (Figure 2c). 34,35 For 2, in contrast, the absorption band corresponding to the electronic transitions of the transition dipole moment along the molecular long axis displayed a pronounced bathochromic shift of 40 nm with the growth of a new shoulder band at 610 nm. This spectral change Polymerization of hydrogen-bonded rosettes DD Prabhu et al suggests a slipped-stacking arrangement typically classified as J-type stacking.…”