+ Resolve Article
+ Follow Us
Follow on FacebookFollow on Facebook
Follow on TwitterFollow on Twitter

+ Translate
+ Subscribe to Site Feed
GeoScience Most Shared ContentMost Shared Content

A compact tetrathiafulvalene-benzothiadiazole dyad and its highly symmetrical charge-transfer salt: ordered donor π-stacks closely bound to their acceptors

, : A compact tetrathiafulvalene-benzothiadiazole dyad and its highly symmetrical charge-transfer salt: ordered donor π-stacks closely bound to their acceptors. Chemistry 20(23): 7136-7143

A compact and planar donor-acceptor molecule 1 comprising tetrathiafulvalene (TTF) and benzothiadiazole (BTD) units has been synthesised and experimentally characterised by structural, optical, and electrochemical methods. Solution-processed and thermally evaporated thin films of 1 have also been explored as active materials in organic field-effect transistors (OFETs). For these devices, hole field-effect mobilities of μFE = (1.3±0.5)×10(-3) and (2.7±0.4)×10(-3)  cm(2)  V s(-1) were determined for the solution-processed and thermally evaporated thin films, respectively. An intense intramolecular charge-transfer (ICT) transition at around 495 nm dominates the optical absorption spectrum of the neutral dyad, which also shows a weak emission from its ICT state. The iodine-induced oxidation of 1 leads to a partially oxidised crystalline charge-transfer (CT) salt {(1)2I3}, and eventually also to a fully oxidised compound {1I3}⋅1/2I2. Single crystals of the former CT compound, exhibiting a highly symmetrical crystal structure, reveal a fairly good room temperature electrical conductivity of the order of 2 S cm(-1). The one-dimensional spin system bears compactly bonded BTD acceptors (spatial localisation of the LUMO) along its ridge.


PMID: 24737663

DOI: 10.1002/chem.201304688

Other references

Paganelli, S.; Tassini, R.; L.S.rella, G.; Piccolo, O.; Baldi, F.; Rathod, V.D., 2015: Aqueous biphasic treatment of some nitrocompounds with hydrogen in the presence of a biogenerated Pd-polysaccharide. A strain of Klebsiella oxytoca BAS-10, known to produce a specific exopolysaccharide (EPS), when grown aerobically in static mode in the presence of Pd(NO3)2, generated the species Pd-EPS that was used as catalyst precursor in the aqueous biphasic...

Widner, B.; Sepp, N.; Kowald, E.; Kind, S.; Schmuth, M.; Fuchs, D., 2000: Degradation of tryptophan in patients with systemic lupus erythematosus. Systemic lupus erythematosus (SLE), a progressive autoimmune disorder, is associated with chronic stimulation of various components of the immune system. Since cell-mediated immunity is also activated, we were interested to test for abnormalities...

Gottsch, J.D.; Liu, S.H.; Stark, W.J., 1992: Mooren's ulcer and evidence of stromal graft rejection after penetrating keratoplasty. A Mooren's ulcer developed in a 6-year-old girl after a penetrating keratoplasty for Peters' anomaly. A destructive, circumferential, and centripetal stromal ulceration recurred despite conjunctival resection, corneal gluing, topical and...

Riva, L.; Galzin, A.M.rie, 1996: Pharmacological characterization of a specific binding site for angiotensin IV in cultured porcine aortic endothelial cells. This study demonstrated the existence of a specific binding site for angiotensin IV in porcine aortic endothelial cells. Non-equilibrium kinetic analyses at 37 degrees C allowed the calculation of a kinetic Kd of 0.44 nM. Pseudo-equilibrium satura...

Hirakata, H.; Onoyama, K.; Iseki, K.; Kumagai, H.; Fujimi, S.; Omae, T., 1984: Worsening of anemia induced by long-term use of captopril in hemodialysis patients. During long-term captopril administration to hypertensive patients on maintenance hemodialysis, a decrease in hemoglobin, hematocrit, and red blood cell count was observed in 9 out of 12 cases. The maximum decrease in hemoglobin, on the average, w...

Sivaperuman, C.; Jayson, EA., 2002: Occurrence of northern shoveller Anas clypeata Linn. in Kole wetlands of Thrissur, Kerala. Journal of the Bombay Natural History Society. December; 993: 517-518

Jarry, A.; Cortez, A.; René, E.; Muzeau, F.; Brousse, N., 1990: Infected cells and immune cells in the gastrointestinal tract of AIDS patients. An immunohistochemical study of 127 cases. Human immunodeficiency virus (HIV) proteins were detected by immunohistochemistry in the duodenal and rectal mucosa of 30% of 127 AIDS patients studied. HIV-infected cells were present in the lamina propria in 95% of the positive biopsies. They we...

Lonardo, A.; Loria, P., 2002: Apolipoprotein synthesis in nonalcoholic steatohepatitis. The pathophysiology of hepatic steatosis, a prerequisite of nonalcoholic fatty liver disease, is poorly understood. Because very-low-density lipoprotein (VLDL) formation is the chief route of hepatic lipid export, we hypothesized that the synthesi...

Feinendegen L.E., 1988: Cerebral glucose consumption patterns measured by pet in patients with thalamic infarction. European Journal Of Nuclear Medicine6: 224

Kolo, A.I.; Frederiksen, R.A., 1998: Effect of sowing dates on the incidence of long smut (Tolyposporium ehrenbergii) on sorghum. Early sowing of sorghum significantly reduced the level of T. ehrenbergii infection, independently of sorghum genotype, in experimental plots in southwestern Niger. With early-maturing cultivars late sowing should be avoided.