98 research outputs found
4-(2,3-Dihydroxybenzylideneamino)-3-methyl-1H-1,2,4-triazol-5(4H)-one
All the non-H atoms of the title compound, C10H10N4O3, are almost coplanar, the maximum deviation from planarity being 0.065 (3) Å. The dihedral angle between the aromatic rings is 1.66 (6)°. The molecule adopts the enol–imine tautomeric form with an intramolecular hydrogen-bonding interaction between the Schiff base N atom and the hydroxy group. In the crystal, intermolecular N—H⋯O and O—H⋯O hydrogen bonds link the molecules into a three-dimensional network
5-Diethylamino-2-[(E)-(2,4-dimethoxyphenyl)iminomethyl]phenol
The title Schiff base, C19H24N2O3, exists in the crystal structure in the phenol–imine tautomeric form with an intramolecular O—H⋯N hydrogen bond. The planes of the aromatic rings form a dihedral angle of 36.8 (8)°. The crystal packing is characterized by C—H⋯O hydrogen bonds and π–π stacking interactions [centroid–centroid distance = 3.478 (4)Å]
Amorf Hidrojenlenmiş Karbon İnce Filmlerin Yasak Enerji Bant Aralıklarının Optiksel İncelenmesi
Bu çalışmada plazma depozisyonu metodu ile üretilmiş amorf Hidrojenlenmiş Karbon (a-C:H) ince filmlerin yasak enerji bant aralıkları, optiksel geçirgenlik spektroskopisi aracılığı ile incelenmiştir. Analizler sonucu, ince film kalınlıklarının ve yasak enerji bant aralığı değerlerinin, film üretiminde kullanılan elektrik güç arttıkça, arttıkları tespit edilmiştir. Elde edilen sonuçlar teorik olarak modellenerek, iyi bilinen bazı renklerde verimli çalışma potansiyeline sahip cihazların üretiminde kullanılabilecek olası güç değerlerinin tahmininde kullanılmıştır
4-(4-Methoxyphenethyl)-3-methyl-1H-1,2,4-triazol-5(4H)-one
The dihedral angle between the two rings in the title compound, C12H15N3O2, is 49.03 (1)°. The crystal structure is stabilized by intermolecular N—H⋯O and C—H⋯O hydrogen bonds and π–π stacking interactions between the triazole rings with a centroid–centroid distance of 3.394 Å
3-(2-Nitrophenoxy)phthalonitrile
In the title compound, C14H7N3O3, the dihedral angle between the two arene units is 62.57 (12)°
Effects of CdTe Quantum Dot Dispersal on Current-Voltage Characteristics in Liquid Crystalline Mediums of E63, E7 and SCLP
The usage of nano-sized quantum dots (QDs) particularly in guest-host based hybrid mediums revealed enhancements in electro-optical properties of the mediums, therefore the focus of considerable amount of contemporary studies has been about dispersal of QDs for improvements in medium. This study investigates the effects of CdTe QD dispersal on current-voltage characteristics of some liquid crystalline materials such as E63, E7 and SCLP. Current is increased for all samples due to QD dispersal, however the best improvement is obtained for E7. Hence, current-voltage characteristics of E7 and QD dispersed E7 mediums were also investigated under UV light exposure. Current values of both mediums were found to increase with increasing UV light power due to generation of electron-hole pairs. Photocurrent’s dependence on light power revealed that QD dispersal does not affect recombination mechanism in the medium. On the other hand, UV light responsivity of QD dispersed E7 was obtained approximately twice of that of E7. Thus, it was concluded that CdTe QDs make considerable contribution to current-voltage and photoconductivity characteristics of E7 in dark and under UV light illumination
2-[(E)-(2-Chlorophenyl)iminomethyl]-6-methylphenol
The title compound, C14H12ClNO, a Schiff base derived from 3-methylsalicylaldehyde, crystallizes in the phenol–imine tautomeric form with an E conformation for the imine functionality. The molecule is not planar, the dihedral angle between the aromatic rings being 36.38 (5)°. The hydroxy H atom is involved in a strong intramolecular O—H⋯N hydrogen bond, generating an S(6) ring
5-(Thiophen-2-ylmethyl)-1,3,4-thiadiazol-2-amine
In the title molecule, C7H7N3S2, the dihedral angle between the thiophene and thiadiazole rings is 72.99 (5)°; the two rings are oriented so that the S atoms in each ring are on the same side. In the crystal, the three-dimensional network involves strong N—H⋯O hydrogen bonds, as well as C—H⋯π and π–π stacking interactions [centroid–centroid distances = 3.654 (1) and 3.495 (1) Å]
PCDTBT:PCBM Tabanlı Organik Schottky Diyotlarının ve Heteroeklem Güneş Hücrelerinin Optoelektronik Karakterizasyonu
Bu çalışmada Gümüş/n-tipi
Silisyum/poly[N-9′-heptadecanyl-2,7–carbazole–alt-5,5-(4′,7′-di–2–thienyl-2′,1′,3′-benzothiadiazole:[6,6]-phenyl-C61-butyric
acid methyl ester/Altın (Ag/n-Si/PCDTBT:PC61BM/Au) organik
metal-polimer yarıiletken Schottky bariyer diyotları, polimer arayüz olarak %20
PCDTBT ve %80 PCBM karışımı kullanılarak üretilmiştir. Üretilen diyotların 240
- 350 K sıcaklık aralığında akım-voltaj ölçümleri yapılarak, bu sıcaklıklardaki
diyot idealite faktörü değerlerinin 1,80 ve 2,26 aralığında değiştiği
gözlemlenmiştir. Çalışmanın ikinci aşamasında, İndiyum Kalay Oksit/PCDTBT:PCBM/Gümüş
(ITO/PCDTBT:PCBM/Ag) organik güneş hücresi %20:%80 PCDTBT:PCBM hacimsel oranına
sahip olacak şekilde üretilmiş ve güç dönüştürme verimi % 0,85 olarak bulunmuştur
Ethyl 4-(3-ethyl-5-oxo-4,5-dihydro-1H-1,2,4-triazol-4-yl)benzoate
In the title compound, C13H15N3O3, the dihedral angle between the two aromatic ring is 51.06 (1)°. In the crystal, molecules are connected by pairs of N—H⋯O hydrogen bonds into centrosymmetric dimers
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