3241-20-1Relevant articles and documents
Synthesis and applications of novel acceptor-donor-acceptor organic dyes with dithienopyrrole- and fluorene-cores for dye-sensitized solar cells
Sahu, Duryodhan,Padhy, Harihara,Patra, Dhananjaya,Yin, Jen-Fu,Hsu, Ying-Chan,Lin, Jiann-T'Suen,Lu, Kuang-Lieh,Wei, Kung-Hwa,Lin, Hong-Cheu
, p. 303 - 311 (2011)
Four novel symmetrical organic dyes (S1-S4) configured with acceptor-donor-acceptor (A-D-A) structures containing electron donating fluorene (S1 and S2) and N-alkyl dithieno[3,2-b:2′,3′-d]pyrrole (DTP) (S3 and S4) cores terminated with two anchoring cyanoacrylic acids (as electron acceptors) were synthesized and applied to dye-sensitized solar cells (DSSCs). The DSSC device based on S2 dye showed the best photovoltaic performance among S1-S4 dyes: a maximum monochromatic incident photon-to-current conversion efficiency (IPCE) of 76%, a short circuit current (JSC) of 12.27 mA/cm2, an open circuit voltage (VOC) of 0.61 V, a fill factor (FF) of 0.63, and an overall power conversion efficiency (η) of 4.73%. Besides, the utilization of chenodoxycholic acid (CDCA) as a co-adsorbent in the DSSC device based on S3 dye showed a significant improvement in its η value (from 3.70% to 4.31%), which is attributed to the suppression of dye aggregation on TiO2 surface and thus to increase the JSC value eventually. Copyright
Multifunctional materials for OFETs, LEFETs and NIR PLEDs
Steckler,Lee,Chen,Fenwick,Andersson,Cacialli,Sirringhaus
, p. 5133 - 5141 (2014/07/07)
A family of phthalimide-thiophene copolymers with linear and branched alkyl chains attached to the imide nitrogen have been synthesized. Their optical and electronic properties were investigated along with their applications in OFETs and LEFETs. The phthalimide-thiophene copolymer having a C16 straight alkyl chain on the phthalimide yielded the highest mobilities and PLQE with mobilities of 1 × 10-3 cm2 V-1 s -1 for holes and 1 × 10-2 cm2 V -1 s-1 for electrons with a PLQE of ～28% in the solid state. Since these polymers are ambipolar and emissive, they have proven to be useful for applications as a host material for NIR PLEDs. In this study a 1% loading of NIR emitting DAD segments based on bisthienyl(thiadiazoloquinoxaline) or bisthienyl(benzotriazolothiadiazole) were incorporated into the phthalimide-thiophene polymerization. Using the branched CH(C8H 17)2 alkyl chain on the host phthalimide-thiophene copolymer combined with the bisthienyl(benzotriazolothiadiazole) emitter resulted in the most efficient (emission maximum ≥ 850 nm) single layer NIR-emitting PLED to date with an EQE of 0.27% emitting at 885 nm.
Synthesis and antimicrobial activity of symmetrical two-tailed dendritic tricarboxylato amphiphiles
Sugandhi, Eko W.,Falkinham III, Joseph O.,Gandour, Richard D.
, p. 3842 - 3853 (2008/02/09)
Two series of water-soluble, symmetrical two-tailed homologous dendritic amphiphiles-R2NCONHC((CH2)2COOH)3, 2(n,n), and R2CHNHCONHC((CH2)2COOH)3, 3(n,n), where R = n-CnH2n+1-were synthesized and compared to R″NHCONHC((CH2)2COOH)3, 1(n), R″ = n-CnH2n+1, to determine whether antimicrobial activity was influenced by total or individual alkyl chain lengths, and whether antimicrobial activity depends on hydrophobicity or tail topology (one or two). In a broad screen of 11 microorganisms, 2(n,n) and 3(n,n) generally displayed higher minimal inhibitory concentrations (MICs) than 1(n) against growth as measured by broth microdilution assays. Chain-length specificity was observed against Candida albicans as 1(16), 2(8,8), and 3(8,8) showed the lowest MIC in their respective series. The one case where two-tailed compounds displayed the lowest MICs-3(10,10), 15 μM; 3(11,11), 7.2 μM; and 3(12,12), 6.9 μM-was against Cryptococcus neoformans.
