Single molecule of a π-conjugated polymer slowly twinkles in solution at room temperature

Shinohara, Ken‐ichi; Kato, G.; Minami, H.; Higuchi, Hideo

doi:10.1016/s0032-3861(01)00322-6

Cited by 4 publications

(3 citation statements)

References 15 publications

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“…4-Bromo-4‘- n -pentylbiphenyl, 1-bromo-4-( trans -4‘- n -pentylcyclohexyl)benzene, and p -ethoxyphenylacetylene ( P 1 ) were supplied by Merck. 9,10- Bis(phenylethynyl)anthracene, trimethylsilylacetylene, dichlorobis(triphenylphosphine)palladium(II), copper(I) iodide, tetrabutylammonium fluoride hydrate, 9,10-dibromoanthracene, dry toluene, and dry diisopropylamine were purchased from Aldrich and used without further purification; n -decyl p -bromobenzoate was prepared from p -bromobenzoic acid and n -decanol (Aldrich) as described in the literature . All reactions were carried out under an argon atmosphere using Schlenk techniques and dry solvents.…”

Section: Methodsmentioning

confidence: 99%

Luminescent Liquid Crystals Derived from 9,10-Bis(Phenylethynyl)anthracene

2004

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Liquid crystalline behavior has been found in a series of low-molecular-weight 9,10disubstituted anthracenes. In particular, nematic mesomorphism is displayed by derivatives bearing at least a 4′-pentylbiphenyl-4-ylethynyl group, showing that the presence of this substituent induces a mesophase despite the broad central core of the anthracene skeleton. These compounds can also be seen as derived from the known fluorescent material 9,10bis(phenylethynyl)anthracene (BPEA) with a p-pentylphenyl substituent (among others) along its long axis. A comparison of the optical properties of the compounds relative to the parent compound BPEA is presented in order to evaluate their applications in emissive devices. A study of a nematic compound in solution, PMMA film, and pure state in the different phases shows high fluorescence in solution in the green region that slightly shifts to higher wavelengths in PMMA films, but it is clearly red-shifted in pure state.

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Section: Methodsmentioning

confidence: 99%

Luminescent Liquid Crystals Derived from 9,10-Bis(Phenylethynyl)anthracene

2004

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“…We also directly observed hierarchical chiral structures, ranging from primary to quaternary, and demonstrated the existence of a quaternary structure consisting of a π‐electronic system capable of performing optical and electronic functions. We have also reported previously on dynamic photoluminescence of single molecules in π‐conjugated polymers using thermal energy at room temperature in a solution 12–14…”

Section: Introductionmentioning

confidence: 65%

“…We have also reported previously on dynamic photoluminescence of single molecules in -conjugated polymers us-ing thermal energy at room temperature in a solution. [12][13][14] We discovered in this study that single molecules in a chiral helical -conjugated polymer formed a unique nanostructure on the surface of a mica substrate. In this paper, we discuss the diversity of single-molecule structures in a chiral helical -conjugated polymer.…”

Section: Introductionmentioning

confidence: 85%

Direct measurement of structural diversity in single molecules of a chiral helical π‐conjugated polymer

Shinohara

Kitami

Nakamae

2004

J. Polym. Sci. A Polym. Chem.

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Using a noncontact atomic force microscope, we found that single molecules in a chiral helical -conjugated polymer could form a unique periodic structure having a pitch of about 20 nm on the surface of a mica substrate. The diversity of the periodic structures is also discussed. Some basic insights into the characteristics of single molecules (or their individual characteristics) in -conjugated polymers are revealed.

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2,1,3‐Benzothiadiazole and Derivatives: Synthesis, Properties, Reactions, and Applications in Light Technology of Small Molecules

et al. 2012

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2,1,3‐Benzothiadiazole (BTD) is one of the most important nuclei used in the chemistry of photoluminescent compounds and applicable for light technology. The understanding of its properties and reactions is fundamental for the design and application of these derivatives in molecular organic electronic devices and for other technologies. As a result of their potential as constituents of organic light‐emitting diodes, solar cells, liquid crystals, dyes, photovoltaic cells, and many others, attention has been focused on BTD π‐extended derivatives with potential use in this exciting area. Herein, we describe their syntheses, properties, reactions, and selected examples of applications in light technology using by BTD (small molecules) as the core.

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Single molecule of a π-conjugated polymer slowly twinkles in solution at room temperature

Cited by 4 publications

References 15 publications

Luminescent Liquid Crystals Derived from 9,10-Bis(Phenylethynyl)anthracene

Luminescent Liquid Crystals Derived from 9,10-Bis(Phenylethynyl)anthracene

Direct measurement of structural diversity in single molecules of a chiral helical π‐conjugated polymer

2,1,3‐Benzothiadiazole and Derivatives: Synthesis, Properties, Reactions, and Applications in Light Technology of Small Molecules

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