25 Result(s)
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Article
Synthesis of optically active through-space conjugated polymers consisting of planar chiral pseudo-meta-disubstituted [2.2]paracyclophane
The polymerization of enantiopure pseudo-meta-diethynyl[2.2]paracyclophane with a diiodobenzene derivative was carried out through Sonogashira-Hagihara cross-coupling. The synthesized polymers consisted of three-...
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Article
π-Conjugated polymer-layered structures: synthesis and self-assembly
π-Conjugated polymers capped with a boronic acid end-functional group were synthesized by chain-growth Suzuki–Miyaura polycondensation. The obtained polymers were reacted with a π-stacked-polymer scaffold, develo...
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Article
Synthesis of optically active through-space conjugated polymers consisting of planar chiral [2.2]paracyclophane and quaterthiophene
The alternating copolymers containing planar chiral 4,12-disubstituted[2.2]paracyclophane and quaterthiophene units in the main chain were prepared. The obtained optically active polymers exhibited mirror imag...
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Article
Synthesis and characterization of an alternating copolymer with 1,2-disubstituted and 9,12-disubstituted o-carborane units
The alternating copolymer containing p-phenylene-ethynylene, 1,2-disubstituted o-carborane and 9,12-disubstituted o-carborane units in the main chain was prepared. Through the Sonogashira–Hagihara coupling, the d...
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Article
Synthesis of unsymmetrical P-stereogenic oligophosphines and chemoselective cleavage of phosphine-borane coordinate bonds
This paper describes the synthetic details and coordination abilities of optically active P-stereogenic tetraphosphine and hexaphosphine with different substituted groups on their phosphorus atoms. The polymer...
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Article
Aromatic-ring-layered polymers composed of fluorene and xanthene
Aromatic-ring-layered polymers were synthesized by Sonogashira–Hagihara coupling reaction using xanthene as a scaffold. The polymers were characterized by various spectroscopic and electrochemical methods. The...
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Article
Synthesis and low-temperature dehydrating imidation polymerization of 1,4-dihydro-1,4-diarsininetetracarboxylic acid dianhydride
cis-1,4-Dihydro-1,4-dimethyl-1,4-diarsinine-2,3,5,6-tetracarboxylic acid dianhydride (cis-DHDADA) was quantitatively formed from cis-1,4-dihydro-1,4-dimethyl-2,3,5,6-tetrakis(t-butoxycarbonyl)-1,4-diarsinine (cis
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Article
Naphthalene-based oligothiophene-stacked polymers
We report the synthesis and properties of π-stacked polymers consisting of oligothiophene and naphthalene as the stacked π-system and the scaffold, respectively. The titled polymers were obtained by the Suzuki...
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Article
Aromatic ring-layered polymer containing 2,7-linked carbazole on xanthene
New aromatic ring-layered polymer comprising the 2,7-linked carbazole and xanthene units was synthesized by the Sonogashira coupling reaction. The structure and optical properties of the 2,7-linked carbazole-l...
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Article
Through-space conjugated polymer containing [2.2]paracyclophane and dithiafulvene units in the main chain
A new through-space conjugated polymer containing alternate [2.2]paracyclophane and dithiafulvene units was synthesized by cycloaddition polymerization of aldothioketene derived from 4,16-diethynyl[2.2]paracyc...
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Article
Synthesis, Structure, and Properties of Aromatic Ring-Layered Polymers Containing Ferrocene as a Terminal Unit
[2.2]Paracyclophane-layered polymers 4a and 4b end-capped by ferrocene and [2.2]paracyclophane, respectively, were synthesized by using a xanthene skeleton as a scaffold. Two model compounds, 4,5-bis(ferrocenylet...
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Article
Synthesis of through-space conjugated polymers containing the pseudo-ortho-linked [2.2]paracyclophane moiety
New through-space conjugated polymers comprising the pseudo-ortho-linked [2.2]paracyclophane moiety were synthesized by the Sonogashira coupling reaction. All the synthesized polymers were soluble in common organ...
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Article
Synthesis of PAMAM Dendrimers Possessing [2.2]Paracyclophane on Their Surface
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Article
Synthesis of Optically Active Dendrimers Having Chiral Bisphosphine as a Core
First and second generation chiral dendrimers P-1G1, P-2G1, P-1G2 and P-2G2 containing chiral bisphosphine as a core were synthesized via a reaction of chiral bisphosphine compound (S,S)-1 with benzyl ether dendr...
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Article
Synthesis and Characterization of π-Conjugated Polymers with a 2,5-Substituted Phosphole Skeleton
Novel π-conjugated polymers 10a-c having the phosphole ring were prepared by PdCl2(PPh3)2/CuI catalyzed coupling of 1-phenyl-2,5-bis(p-bromophenyl)phosphole 8 with fluorine-substituted diethynylbenzene 9a-c. The ...
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Article
Synthesis of Conjugated Polymers Containing Phosphole with the 5-Member Fused Carbocycle
Novel conjugated polymers 9a–c possessing the phosphole ring with the 5-member fused carbocycle were synthesized by palladium catalyzed coupling reaction of 1-phenyl-2,5-bis(p-bromophenyl)phosphole 7 with diethyn...
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Article
Synthesis of the Optically Active Polymer Consisting of Chiral Phosphorus Atoms and p-Phenylene-ethynylene Units
We successfully synthesized optically active polymer 4 by using chiral bisphosphine, (S,S)-1,2-bis(boranato(t-butyl)methylphosphino)ethane (S,S)-1, as a key building block. The structure of the polymer was charac...
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Article
Oxidation of Dithia[3.3]metacyclophane-Containing Through-Space π-Conjugated Polymer
The oxidation reaction of dithia[3.3]metacyclophane-containing π-conjugated polymer (3) was performed by the treatment with m-chloroperbenzoic acid (m-CPBA). The reaction proceeded smoothly to obtain the correspo...
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Article
Novel Conjugated Polymers Containing [2.2]Paracyclophane and Carbazole Units with Efficient Photoluminescence
Novel through-space conjugated polymers based on PPE having [2.2]paracyclophane and N-alkylcarbazole units in the main chain were synthesized by Sonogashira-coupling reaction. All polymers were quite soluble in a...
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Article
Synthesis and Properties of PPV–Based (η6–Arene)Cr(CO)3–Containing Polymers Having Alkyldiphenylamine or Triarylamine in the Main Chain
Novel poly(p–phenylenevinylene)–based (η6–arene)Cr(CO)3–containing polymers including the alkyldiphenylamine or triarylamine units in the main chain were synthesized by the Homer–Wadsworth–Emmons coupling reactio...
