• 공업화학
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• 제21권2호
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• pp.137-141
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• 2010

4,7-Di-thiophen-2-yl-benzo(1,2,5)thiadiazole과 1,4-bis(dodecyloxy)-2,5-divinylbenzene을 Heck coupling 중합법을 이용하여 poly[4,7-Di-thiophen-2-yl-benzo(1,2,5)thiadiazole]-alt-1,4-bis(dodecyloxy)-2,5-divinylbenzene (PPVTBT) 공중합체를 합성하였다. 합성한 PPVTBT의 최대흡수파장과 band gap은 각각 550 nm와 1.74 eV이고 HOMO와 LUMO enegry level은 각각 -5.24 eV, -3.50 eV로 나타났다. 합성한 공중합체인 PPVTBT와 (6)-1-(3-(methoxycarbonyl)propyl)-{5}-1-phenyl[5,6]-$C_{61}$(PCBM)을 1 : 6의 중량비로 blend하여 제작한 소자의 효율은 AM 1.5 G, 1 sun 조건($100mA/cm^{2}$)에서 0.16%의 효율을 보였다. 그리고 소자의 Jsc (short circuit current), FF (fill factor)와 Voc (open circuit voltage)는 각각 $0.74mA/cm^{2}$, 31%, 0.71 V로 나타났다.

• Bulletin of the Korean Chemical Society
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• 제32권12호
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• pp.4227-4232
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• 2011

A number of new 2,5-disubstituted 1,3,4-thiadiazole and their S- or N-substituted derivatives as well as the corresponding sugar hydrazone derivatives were synthesized and tested for their antimicrobial activity against Bacillus subtilis (Gram-positive), Pseudomonas aeruginosa (Gram-negative), and Streptomyces species (Actinomycetes). The synthesized compounds displayed different degrees of antimicrobial activities or inhibitory actions.

• Bulletin of the Korean Chemical Society
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• 제24권12호
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• pp.1843-1844
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• 2003

• Bulletin of the Korean Chemical Society
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• 제32권3호
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• pp.1011-1016
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• 2011

A series of thiadiazole derivatives were synthesized with differently substituted benzoic acids which were cyclized to give differently substituted thiazolidin-4-one. Elemental analysis, IR, $^1H$ NMR, $^{13}C$ NMR and mass spectral data confirmed the structure of the synthesized compounds. The derivatives of these moieties were evaluated for anticonvulsant activity by MES model and neurotoxicity by rotarod method. The synthesized compounds showed good potential for anticonvulsant activity besides this, the compounds also showed neurotoxic effect. It was observed that compounds with $OCH_3$ at 3, 4 position of phenyl ring [5(a-l)] showed less protection against convulsions as compared to compounds having unsubstituted phenyl ring [4(a-l)].

• 대한화학회지
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• 제17권2호
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• pp.126-129
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• 1973

회전백금전극을 지시전극으로하고 수은-요오드화수은(II)을 기준전극으로하여 암모니아수용액에서 2.5-dimercapto-1,3,4-thiadiazole에 의한 은의 전류적정법을 연구하였다. 암모니아수용액에서 EDTA를 은폐제로 사용하여 여러 가지 이온들의 존재 하에 미량의 은을 직접 적정할 수가 있었으며 백금과 금 이온만이 방해하였다. 이 방법으로 미량의 은을 상대 오차 ${\pm}3{\%}$이내 정량할 수 있다.

• Fibers and Polymers
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• 제2권4호
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• pp.212-220
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• 2001

A series of polymeric dyes wre synthesized by free radical addition polymerication of monomeric dyes. The 2-amino-5-mrecapto-1,3,4-thiadiazole was diazotized and coupled with various N-arlmaleimides to give monomeric dyes. All the polymeric dyes were characterized by elemental analysis, infrared spectroscopy, visible absorption spectroscopy, viscometry. and thermogravimetric analysis. Color and dyeing properties of the polymeric dyes were discussed by comparing them with those of the corresponding monomeric dyes. The dyeing performance of these dyes was assessed on nylon fiber. These dyes were found to give various color shades with good to very good depth and levelness on the fiber. The dyeing of the monomeric dyes showed moderate fastness to light and good to excellent fastness properties. The dyebath exhaustion and fixation on nylon fiber has been found to be good.

• Bulletin of the Korean Chemical Society
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• 제31권8호
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• pp.2345-2350
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• 2010

A series of thiadiazole derivatives were synthesized with differently substituted benzoic acids which were cyclized to give differently substituted thiazolidin-4-one. Elemental analysis, IR, $^1H$ NMR, $^{13}C$ NMR and mass spectral data confirmed the structure of the newly synthesized compounds. The derivatives of these moieties were evaluated for antimicrobial activity. Most of the synthesized compounds showed good antimicrobial activity at 200 and $100\;{\mu}g/mL$. Compounds showed most significant antibacterial activity against gram negative test organism Escherichia coli and most significant antifungal activity against test organisms Aspergillus niger and Candida albicans. It was observed that compounds with $OCH_3$ at 3, 4 position of phenyl ring [5(a-l)] were more potent against microbes as compared to compounds having unsubstituted phenyl ring [4(a-l)].

• Bulletin of the Korean Chemical Society
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• 제3권1호
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• pp.9-13
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• 1982

Sulfametrole, $C_9H_{10}N_4O_3S_2$, crystallizes in the monoclinic system, space group $P2_1/n$ , with a = 8.145(2), b = 16.505(4), c = 9.637(1)${\AA},{\beta}=103.72(1)^{\circ},D_m=1.52gcm^{-3}$,Z=4.Intensities for 3594(2143 observed) unique reflections were measured on a four-circle diffractometer with Mo $K{\alpha}$ radiation $({\lambda}=0.71069{\AA})$. The structure was solved by direct method and refined by full-matrix least squares to a final R of 0.070. The geometrical features of the thiadiazole ring indicate some ${pi}$-electron delocalization inside the ring. The least squares planes defined by the benzene and thiadiazole rings are nearly perpendicular to each other(dihedral angle; $93.9^{\circ}$ ). All the potential hydrogen-bond donor atoms in the molecule, N(1) and N(2), are included in the hydrogen bonding. The molecules through hydrogen bonding form three dimensional network.

• 약학회지
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• 제54권5호
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• pp.328-333
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• 2010

Comparative molecular field analyses (CoMFA) on the antiproliferative activity of N-substituted (R) 2-amino-5-(2,4-dihydroxyphenyl)-1,3,4-thiadiazole analogues (ADTs: 1-17) against bladder cancer (HCV29T) and rectal cancer (SW707) cells were studied quantitatively. The statistical predictability and fitness of CoMFA A1 model for bladder cancer cells were better than those of CoMFA F1 model for rectal cancer cells and the antiproliferative activity of ADTs depends on steric field (HCV29T: 93.1% & SW707: 83.8%). Also, from the contour maps of optimized CoMFA models, the activity for bladder cancer cells had predicted to increase when sterically favored groups were substituted on meta- and para-position, and sterically disfavored groups were substituted on one ortho-position of phenyl ring. The activity for rectal cancer cells had predicted to increase when sterically favored groups were substituted on para-position, and sterically disfavored groups were substituted on two ortho-position of phenyl ring as R-group.

• Bulletin of the Korean Chemical Society
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• 제29권2호
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• pp.335-338
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• 2008

New efficient red emitter having short p?-conjugation length and asymmetric bulky structure, 2-(7-diphenylamino-benzo[1,2,5]thiadiazole-4-ylmethylene)-malononitrile, was synthesized and characterized. Using this material as a dopant, we fabricated electroluminescence device with a structure of ITO/DNTPD/NPD/BTZA (5 wt% in Alq3)/Alq3/LiF/Al. The device exhibited a high brightness of 761 cd/m2 at a driving voltage of 4.8 V, and current efficiency is 0.75 cd/A. The Commission International de IEclairage (CIE) coordinates of the EL device were found to be (0.62, 0.37) at 10 mA/cm2.