Two rhodamine derivatives, L.sub.1 and L.sub.2, bearing 2-methoxy-1-naphthaldehyde and 5-bromo-3-methoxy salicylaldehyde units were synthesized using microwave-assisted organic synthesis and used for reversible sequential fluorescence detection of aluminum ion (Al.sup.3+) and azide (N.sub.3.sup.−) in aqueous acetonitrile solution.

Two rhodamine derivatives, L.sub.1 and L.sub.2, bearing 2-methoxy-1-naphthaldehyde and 5-bromo-3-methoxy salicylaldehyde units were synthesized using microwave-assisted organic synthesis and used for reversible sequential fluorescence detection of aluminum ion (Al.sup.3+) and azide (N.sub.3.sup.−) in aqueous acetonitrile solution.

The invention relates to compounds of the general formulae (I)-(IV), which are characterized by substituents B comprising one or more sulfonic acid groups and their use as marker groups for the detection of analytes.

The invention relates to compounds of the general formulae (I)-(IV), which are characterized by substituents B comprising one or more sulfonic acid groups and their use as marker groups for the detection of analytes.

The present application discloses a tetrastyrene-based compound, an application thereof, and an electronic device using the same. The tetrastyrene-based compound has a general structural formula as shown in the following Formula 1:

##STR00001##

The tetrastyrene-based compound includes an aromatic amine and a rigid tetrastyrene structure, wherein the aromatic amine can effectively improve the hole injection and transport performance, and the rigid tetrastyrene structure is conducive to the formation of evaporation materials of melting type.

The present application discloses a tetrastyrene-based compound, an application thereof, and an electronic device using the same. The tetrastyrene-based compound has a general structural formula as shown in the following Formula 1:

##STR00001##

The tetrastyrene-based compound includes an aromatic amine and a rigid tetrastyrene structure, wherein the aromatic amine can effectively improve the hole injection and transport performance, and the rigid tetrastyrene structure is conducive to the formation of evaporation materials of melting type.

The present disclosure relates to a plurality of host materials, an organic electroluminescent compound, and an organic electroluminescent device comprising the same. By comprising a specific combination of compounds according to the present disclosure as a plurality of host materials, or by comprising the compound according to the present disclosure, it is possible to produce an organic electroluminescent device having improved driving voltage, luminous efficiency and/or lifetime properties, compared to the conventional organic electroluminescent device.

The present disclosure relates to a plurality of host materials, an organic electroluminescent compound, and an organic electroluminescent device comprising the same. By comprising a specific combination of compounds according to the present disclosure as a plurality of host materials, or by comprising the compound according to the present disclosure, it is possible to produce an organic electroluminescent device having improved driving voltage, luminous efficiency and/or lifetime properties, compared to the conventional organic electroluminescent device.

An object of the present invention is to provide a method for producing a peptide with high purity and high efficiency, a protective group-forming reagent having excellent deprotective properties, and a novel condensed polycyclic compound. According to the present invention, there are provided a method for producing a peptide including a step of using a polycyclic compound represented by Formula (1), a protective group-forming reagent containing the polycyclic compound, and the polycyclic compound. At least one of R.sup.1 to R.sup.8 and R.sup.110 has R.sup.A, R.sup.A represents an aliphatic hydrocarbon group or an organic group having an aliphatic hydrocarbon group, and at least one aliphatic hydrocarbon group has 3 or more carbon atoms.

##STR00001##

An object of the present invention is to provide a method for producing a peptide with high purity and high efficiency, a protective group-forming reagent having excellent deprotective properties, and a novel condensed polycyclic compound. According to the present invention, there are provided a method for producing a peptide including a step of using a polycyclic compound represented by Formula (1), a protective group-forming reagent containing the polycyclic compound, and the polycyclic compound. At least one of R.sup.1 to R.sup.8 and R.sup.110 has R.sup.A, R.sup.A represents an aliphatic hydrocarbon group or an organic group having an aliphatic hydrocarbon group, and at least one aliphatic hydrocarbon group has 3 or more carbon atoms.

##STR00001##