The discovery of efficient organic light-emitting diodes (OLEDs) based on small molecules and conjugated polymers, has triggered an intense investigation of their applications in high-efficiency flat-panel displays and solid-state lighting. Significant progress in the materials synthesis and device construction has led to the realization of full color as well as white OLEDs with improved effici...

In this paper, three organic semiconductors such as 9-[(5-nitropyridin-2-aminoethyl)iminiomethyl]-anthracene (a), N?-((pyren-4-yl)methylene)isonicotinohydrazide (b), and novel semiconductor N-(2-((pyren-4-yl)methyleneamino)ethyl)-5-nitropyridin-2-amine (c) were prepared. Their structures assessed using NMR elemental analysis techniques. While compound (a) have the same wing unit ([(5-nitropyrid...

In this work, centimeter-scale macrocrystals of nonpolar colloidal quantum dots (QDs) incorporated into anthracene were grown for the first time. The exciton transfer from the anthracene host to acceptor QDs was systematically investigated, and anisotropic emission from the isotropic QDs in the anthracene macrocrystals was discovered. Results showed a decreasing photoluminescence lifetime of th...

RNA was isolated by a phenol extraction method from mouse embryo cells treated in culture with either [G-3H]-7-methylbenz(a)anthracene or [G-3H]-7-methylbenz(a)anthracene 5,6-oxide (the K-region epoxide). The RNA was degraded to ribonucleosides, mixed with ultraviolet-absorbing quantities of the epoxide ribonucleoside products isolated from RNA that had reacted with 7-methylbenz(a)anthracene 5,...

RNA was isolated by a phenol extraction method from mouse embryo cells treated in culture with either [G-~H]-7 methylbenz[a]anthracene or [G-:'H]-7-methylbenz[a]anthracene 5,6-oxide (the K-region epoxide). The RNA was degraded to ribonucleosides, mixed with ultraviolet-absorbing quantit ies of the epoxide ribonucleoside products isolated from RNA that had reacted with 7-methylbenz[a]anthracene ...

The CoI2(PPh3)2/Zn system effectively catalyzes the [2 + 2 + 2] ene-diyne cycloaddition of 1,6-heptadiynes with allenes in a highly regio- and chemoselective fashion to yield substituted benzene derivatives in good to excellent yields.

A new strategy for Rh(I)-catalyzed [2+2+2] cycloadditions of 1,6-diynes with potassium (Z)-(2-bromovinyl)trifluoroborate as the third two-atom unit has been realized, which provides a facile entry to polysubstituented benzene derivatives.

Several kinds of compounds available as model systems to investigation on metal-metal interaction in metalloproteins and on interaction of aromatics with nucleobases in arene intercalation to DNA were synthesized and characterized by spectrometry. Double and triple layered porphyrinophanes linked with 1,1'- or 1,3-disubstituted ferrocene moieties and their iron and cobalt complexes were prepare...

Hexa-substituted benzene derivatives show larger two-photon cross sections than the corresponding dipolar counterparts and the largest values of delta(max) = 2000 GM and delta(max)/MW = 2.25 GM g(-1) have been obtained with a compound having C[triple bond]C and C=C bonds in the conjugation bridge.

We have successfully developed a new synthetic approach to modulate the electrostatic potentials of metallocavitands and thus their selective recognition towards substituted benzene derivatives via integrating two metal cations of different electronegativity into a self-assembled system.