Novel glassy tetra(N-alkyl-3-bromocarbazole-6-yl)silanes as building blocks for efficient and nonaggregating blue-light-emitting tetrahedral materials

Xue Ming Li; Jianwei Xu; Xuehong Lu; Chaobin He

doi:10.1021/ol050687y

Novel glassy tetra(N-alkyl-3-bromocarbazole-6-yl)silanes as building blocks for efficient and nonaggregating blue-light-emitting tetrahedral materials

Xue Ming Li^*, Jianwei Xu, Xuehong Lu, Chaobin He

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

50 Citations (Scopus)

Abstract

(Chemical Equation Presented) Tetrahedral precursors of tetra(N-alkyl-3-bromocarbazole-6-yl)silanes (1-3), which were amorphous with T_g being adjustable by changing the chain length of the N-substitutent, were developed. Fluorene-conjugated glassy compound 4 and hyperbranched polymer 5 were synthesized from the precursors via Suzuki coupling reaction. 4 and 5 emitted blue light efficiently in the condensed state with high quantum efficiencies of 80 (4) and 59% (5) and small fwhm (full width at half-maximum) of 48 (4) and 55 nm (5), indicating that they did not pack into detrimental aggregates in the solid state.

Original language	English
Pages (from-to)	2829-2832
Number of pages	4
Journal	Organic Letters
Volume	7
Issue number	14
DOIs	https://doi.org/10.1021/ol050687y
Publication status	Published - Jul 7 2005
Externally published	Yes

ASJC Scopus Subject Areas

Biochemistry
Physical and Theoretical Chemistry
Organic Chemistry

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title = "Novel glassy tetra(N-alkyl-3-bromocarbazole-6-yl)silanes as building blocks for efficient and nonaggregating blue-light-emitting tetrahedral materials",

abstract = "(Chemical Equation Presented) Tetrahedral precursors of tetra(N-alkyl-3-bromocarbazole-6-yl)silanes (1-3), which were amorphous with Tg being adjustable by changing the chain length of the N-substitutent, were developed. Fluorene-conjugated glassy compound 4 and hyperbranched polymer 5 were synthesized from the precursors via Suzuki coupling reaction. 4 and 5 emitted blue light efficiently in the condensed state with high quantum efficiencies of 80 (4) and 59% (5) and small fwhm (full width at half-maximum) of 48 (4) and 55 nm (5), indicating that they did not pack into detrimental aggregates in the solid state.",

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T1 - Novel glassy tetra(N-alkyl-3-bromocarbazole-6-yl)silanes as building blocks for efficient and nonaggregating blue-light-emitting tetrahedral materials

AU - Li, Xue Ming

AU - Xu, Jianwei

AU - Lu, Xuehong

AU - He, Chaobin

PY - 2005/7/7

Y1 - 2005/7/7

N2 - (Chemical Equation Presented) Tetrahedral precursors of tetra(N-alkyl-3-bromocarbazole-6-yl)silanes (1-3), which were amorphous with Tg being adjustable by changing the chain length of the N-substitutent, were developed. Fluorene-conjugated glassy compound 4 and hyperbranched polymer 5 were synthesized from the precursors via Suzuki coupling reaction. 4 and 5 emitted blue light efficiently in the condensed state with high quantum efficiencies of 80 (4) and 59% (5) and small fwhm (full width at half-maximum) of 48 (4) and 55 nm (5), indicating that they did not pack into detrimental aggregates in the solid state.

AB - (Chemical Equation Presented) Tetrahedral precursors of tetra(N-alkyl-3-bromocarbazole-6-yl)silanes (1-3), which were amorphous with Tg being adjustable by changing the chain length of the N-substitutent, were developed. Fluorene-conjugated glassy compound 4 and hyperbranched polymer 5 were synthesized from the precursors via Suzuki coupling reaction. 4 and 5 emitted blue light efficiently in the condensed state with high quantum efficiencies of 80 (4) and 59% (5) and small fwhm (full width at half-maximum) of 48 (4) and 55 nm (5), indicating that they did not pack into detrimental aggregates in the solid state.

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Novel glassy tetra(N-alkyl-3-bromocarbazole-6-yl)silanes as building blocks for efficient and nonaggregating blue-light-emitting tetrahedral materials

Abstract

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