Probing triplet state properties of organic chromophores via design and synthesis of Os(II)-diketonate complexes: The triplet state intramolecular charge transfer

被引：20

作者：

Yu, JK

Cheng, YM

Hu, YH

Chou, PT ^{[1
]}

Chen, YL

Lee, SW

Chi, Y

机构：

[1] Natl Taiwan Univ, Dept Chem, Taipei 106, Taiwan

[2] Natl Tsing Hua Univ, Dept Chem, Hsinchu 30043, Taiwan

来源：

JOURNAL OF PHYSICAL CHEMISTRY B | 2004年 / 108卷 / 52期

关键词：

D O I：

10.1021/jp0453111

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

We report the probe of specific triplet state properties of organic chromophores that are otherwise inaccessible in low viscous solution. The prototypical example demonstrated here is [Os(CO)(3)(Cl)(NDP)] (1) ((NDP)H = 2-naphthyl-7-dimethylanilino-1,3-propanedione), which, upon electronic excitation, undergoes intramolecular charge transfer in both S, and T, manifolds of NDP. The dipolar changes in S, and T, monitored via the solvatochromism for both fluorescence and phosphorescence were deduced to be 18.0 and 11.9 D, respectively. The appreciable difference in the dipolar change can be qualitatively rationalized by different extents of charge-transfer character between S, and T, states. The results led to the probe of other reactions in triplet manifold feasible.

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页码：19908 / 19911

页数：4

相关论文

共 24 条

[1] The triplet excited state of ruthenium(II) bis(2,2:6′,2"-terpyridine):: Comparison between experiment and theory [J].

Amini, A ;

Harriman, A ;

Mayeux, A .

PHYSICAL CHEMISTRY CHEMICAL PHYSICS, 2004, 6 (06) :1157-1164

[2] Highly efficient phosphorescent emission from organic electroluminescent devices [J].

Baldo, MA ;

O'Brien, DF ;

You, Y ;

Shoustikov, A ;

Sibley, S ;

Thompson, ME ;

Forrest, SR .

NATURE, 1998, 395 (6698) :151-154

[3] Synthesis and characterization of phosphorescent cyclometalated platinum complexes [J].

Brooks, J ;

Babayan, Y ;

Lamansky, S ;

Djurovich, PI ;

Tsyba, I ;

Bau, R ;

Thompson, ME .

INORGANIC CHEMISTRY, 2002, 41 (12) :3055-3066

[4] Synthesis and characterization of luminescent osmium(II) carbonyl complexes based on chelating dibenzoylmethanate and halide ligands [J].

Chen, YL ;

Sinha, C ;

Chen, IC ;

Liu, KL ;

Chi, Y ;

Yu, JK ;

Chou, PT ;

Lu, TH .

CHEMICAL COMMUNICATIONS, 2003, (24) :3046-3047

[5] Photophysics of Re(I) and Ru(II) diimine complexes covalently linked to pyrene: Contributions from intra-ligand charge transfer states [J].

Del Guerzo, A ;

Leroy, S ;

Fages, F ;

Schmehl, RH .

INORGANIC CHEMISTRY, 2002, 41 (02) :359-366

[6] A new, highly fluorescent terpyridine which responds to zinc ions with a large red-shift in emission [J].

Goodall, W ;

Williams, JAG .

CHEMICAL COMMUNICATIONS, 2001, (23) :2514-2515

[7] INTRAMOLECULAR PROTON-TRANSFER AND TUNNEL EFFECTS IN THE METASTABLE TRIPLET-STATES OF 2-(2'-HYDROXYPHENYL)BENZOXAZOLE STUDIED BY MICROSECOND AND NANOSECOND LASER FLASH-PHOTOLYSIS [J].

GRELLMANN, KH ;

MORDZINSKI, A ;

HEINRICH, A .

CHEMICAL PHYSICS, 1989, 136 (02) :201-211

[8] Photophysics and photochemistry of stilbene-containing platinum acetylides [J].

Haskins-Glusac, K ;

Ghiviriga, I ;

Abboud, KA ;

Schanze, KS .

JOURNAL OF PHYSICAL CHEMISTRY B, 2004, 108 (16) :4969-4978

[9] Strongly modified [2,2′-bipyridyl]-3,3′-diol (BP(OH)2):: a system undergoing excited state intramolecular proton transfer as a photostabilizer of polymers and as a solar energy collector [J].

Kaczmarek, L ;

Borowicz, P ;

Grabowska, A .

JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY, 2001, 138 (02) :159-166

[10]

Lakowicz J. R., 2006, Principles of Fluorescence Spectroscopy Springer