Phenylacetylene Dendrimers Containing a Fluorene Core: Synthesis and Spectroscopic Studies

被引：5

作者：

Wang Chengyun ^{[1
]}

Zhong Hanbin

Li Shanshan

Shu Weifu

Shen Yongjia

机构：

[1] E China Univ Sci & Technol, Key Lab Adv Mat, Shanghai 200237, Peoples R China

来源：

CHINESE JOURNAL OF CHEMISTRY | 2010年 / 28卷 / 05期

基金：

中国国家自然科学基金;

关键词：

dendrimers; fluorescence; fluorene; band-gap; quantum yield; BLUE; HOST; LUMINESCENCE; POLYDENDRONS; RECOGNITION; CONJUGATION; CONVERGENT; CARBAZOLE; DIODES; GREEN;

D O I：

10.1002/cjoc.201090134

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Phenylacetylene dendrimers 9-11 containing fluorene as the core with a larger HOMO-LUMO energy gap were synthesized and characterized. Their structure and properties were studied by UV, FL, H-1 NMR, MS etc. These novel phenylacetylene dendrimers exhibit unique photophysical properties. They exist a new absorption band around 340 nm whose molar coefficient decreases with increasing generation. The band-gaps of 9-11 are 3.54, 3.43 and 3.02 respectively. The fluorescence quantum yield of 10 is as high as 0.61.

引用

页码：699 / 704

页数：6

共 29 条

[1] Light-harvesting in carbonyl-terminated phenylacetylene dendrimers:: The role of delocalized excited states and the scaling of light-harvesting efficiency with dendrimer size [J].

Ahn, Tai Sang ;

Thompson, Alexis L. ;

Bharathi, P. ;

Muller, Astrid ;

Bardeen, Christopher J. .

JOURNAL OF PHYSICAL CHEMISTRY B, 2006, 110 (40) :19810-19819

[2] IMPROVEMENTS IN THE SYNTHESIS OF PHENYLACETYLENE MONODENDRONS INCLUDING A SOLID-PHASE CONVERGENT METHOD [J].

BHARATHI, P ;

PATEL, U ;

KAWAGUCHI, T ;

PESAK, DJ ;

MOORE, JS .

MACROMOLECULES, 1995, 28 (17) :5955-5963

[3] Synthesis and luminescence properties of four-armed conjugated structures containing 1,3,4-oxadiazole moieties [J].

Cha, SW ;

Choi, SH ;

Kim, K ;

Jin, JI .

JOURNAL OF MATERIALS CHEMISTRY, 2003, 13 (08) :1900-1904

[4] 2,4-Dicyano-3-diethylamino-9,9-diethylfluorene Based Blue Light-emitting Star-shaped Compounds: Synthesis and Properties [J].

Chen Xiaohang ;

Chen Xiaopeng ;

Zhao Zujin ;

Lue Ping ;

Wang Yanguang .

CHINESE JOURNAL OF CHEMISTRY, 2009, 27 (05) :971-977

[5] Fullerene derivatives substituted with differently branched phenyleneethynylene dendrons:: Synthesis, electronic and excited state properties [J].

Clifford, John N. ;

Gegout, Aline ;

Zhang, Sheng ;

De Freitas, Rossimiriam Pereira ;

Urbani, Maxence ;

Holler, Michel ;

Ceroni, Paola ;

Nierengarten, Jean-Francois ;

Armaroli, Nicola .

EUROPEAN JOURNAL OF ORGANIC CHEMISTRY, 2007, 2007 (35) :5899-5908

[6] Energy transfer in dendritic macromolecules: Molecular size effects and the role of an energy gradient [J].

Devadoss, C ;

Bharathi, P ;

Moore, JS .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1996, 118 (40) :9635-9644

[7] Conjugated dendrimers with poly(phenylenevinylene) and poly(phenyleneethynylene) scaffolds [J].

Garcia-Martinez, Joaquin C. ;

Diez-Barra, Enrique ;

Rodriguez-Lopez, Julian .

CURRENT ORGANIC SYNTHESIS, 2008, 5 (03) :267-290

[8] Effect of repeat unit flexibility on dendrimer conformation as studied by atomistic molecular dynamics simulations [J].

Gorman, CB ;

Smith, JC .

POLYMER, 2000, 41 (02) :675-683

[9] Synthesis of phenylacetylene dendrimers having sterically congested diazo units and characterization of their photoproducts [J].

Itoh, T ;

Maemura, T ;

Ohtsuka, Y ;

Ikari, Y ;

Wildt, H ;

Hirai, K ;

Tomioka, H .

EUROPEAN JOURNAL OF ORGANIC CHEMISTRY, 2004, 2004 (14) :2991-3003

[10] Novel Oligo-9,9′-spirobifluorenes through ortho-Linkage as Full Hydrocarbon Host for Highly Efficient Phosphorescent OLEDs [J].

Jiang, Zuoquan ;

Yao, Haiqing ;

Zhang, Zhiqiang ;

Yang, Chuluo ;

Liu, Zhongyin ;

Tao, Youtian ;

Qin, Jingui ;

Ma, Dongge .

ORGANIC LETTERS, 2009, 11 (12) :2607-2610

← 1 2 3 →