Synthesis and photophysical properties of neutral luminescent rhenium-based molecular rectangles

T. Rajendran; Bala Manimaran; Rong Tang Liao; Ren Jay Lin; P. Thanasekaran; Gene Hsiang Lee; Shie Ming Peng; Yen Hsiang Liu; I. Jy Chang; S. Rajagopal; Kuang Lieh Lu

doi:10.1021/ic034099x

Synthesis and photophysical properties of neutral luminescent rhenium-based molecular rectangles

T. Rajendran, Bala Manimaran, Rong Tang Liao, Ren Jay Lin, P. Thanasekaran, Gene Hsiang Lee, Shie Ming Peng, Yen Hsiang Liu, I. Jy Chang^*, S. Rajagopal, Kuang Lieh Lu

^*Corresponding author for this work

Department of Chemistry

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

81 Citations (Scopus)

Abstract

A series of neutral luminescent molecular rectangles [{Re(CO) ₃(μ-bpy)Br}{Re(CO)₃(μ-L)Br}]₂ (1-4) having fac-Re(CO)₃Br as corners and 4,4′-bipyridine (bpy) as the bridging ligand on one side and other bipyridyl ligands of varying length (L) on the other side have been synthesized and characterized. The crystal structure of 1 shows a rectangular cavity with the dimensions of 11.44 x 7.21 Å. When the cavity size is tuned from 1 to 4, a dimension of 11.4 x 20.8 Å could be achieved, as revealed by the molecular modeling. These rectangles exhibit luminescence in solution at room temperature. In particular, compound 4 containing 1,4-bis(4′-pyridylethynyl)benzene (bpeb) as bridging ligand shows the excited-state lifetime of 495 ns. Fine-tuning of the cavity size of the rectangles improves their excited-state properties. These properties facilitate the study of excited-state electron-transfer reactions with electron acceptors and donors and host-guest binding. Crystallographic information: 1·6CH₃COCH₃ is monoclinic, P2 ₁/c, with a = 12.0890(2), b = 24.2982(2), and c = 12.8721(2) Å, β = 107.923(1)°, and Z = 2.

Original language	English
Pages (from-to)	6388-6394
Number of pages	7
Journal	Inorganic Chemistry
Volume	42
Issue number	20
DOIs	https://doi.org/10.1021/ic034099x
Publication status	Published - 2003 Oct 6

ASJC Scopus subject areas

Physical and Theoretical Chemistry
Inorganic Chemistry

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10.1021/ic034099x

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@article{9b42577e837a41c7aa100092fb905990,

title = "Synthesis and photophysical properties of neutral luminescent rhenium-based molecular rectangles",

abstract = "A series of neutral luminescent molecular rectangles [{Re(CO) 3(μ-bpy)Br}{Re(CO)3(μ-L)Br}]2 (1-4) having fac-Re(CO)3Br as corners and 4,4′-bipyridine (bpy) as the bridging ligand on one side and other bipyridyl ligands of varying length (L) on the other side have been synthesized and characterized. The crystal structure of 1 shows a rectangular cavity with the dimensions of 11.44 x 7.21 {\AA}. When the cavity size is tuned from 1 to 4, a dimension of 11.4 x 20.8 {\AA} could be achieved, as revealed by the molecular modeling. These rectangles exhibit luminescence in solution at room temperature. In particular, compound 4 containing 1,4-bis(4′-pyridylethynyl)benzene (bpeb) as bridging ligand shows the excited-state lifetime of 495 ns. Fine-tuning of the cavity size of the rectangles improves their excited-state properties. These properties facilitate the study of excited-state electron-transfer reactions with electron acceptors and donors and host-guest binding. Crystallographic information: 1·6CH3COCH3 is monoclinic, P2 1/c, with a = 12.0890(2), b = 24.2982(2), and c = 12.8721(2) {\AA}, β = 107.923(1)°, and Z = 2.",

author = "T. Rajendran and Bala Manimaran and Liao, {Rong Tang} and Lin, {Ren Jay} and P. Thanasekaran and Lee, {Gene Hsiang} and Peng, {Shie Ming} and Liu, {Yen Hsiang} and Chang, {I. Jy} and S. Rajagopal and Lu, {Kuang Lieh}",

year = "2003",

month = oct,

day = "6",

doi = "10.1021/ic034099x",

language = "English",

volume = "42",

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journal = "Inorganic Chemistry",

issn = "0020-1669",

publisher = "American Chemical Society",

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T1 - Synthesis and photophysical properties of neutral luminescent rhenium-based molecular rectangles

AU - Rajendran, T.

AU - Manimaran, Bala

AU - Liao, Rong Tang

AU - Lin, Ren Jay

AU - Thanasekaran, P.

AU - Lee, Gene Hsiang

AU - Peng, Shie Ming

AU - Liu, Yen Hsiang

AU - Chang, I. Jy

AU - Rajagopal, S.

AU - Lu, Kuang Lieh

PY - 2003/10/6

Y1 - 2003/10/6

N2 - A series of neutral luminescent molecular rectangles [{Re(CO) 3(μ-bpy)Br}{Re(CO)3(μ-L)Br}]2 (1-4) having fac-Re(CO)3Br as corners and 4,4′-bipyridine (bpy) as the bridging ligand on one side and other bipyridyl ligands of varying length (L) on the other side have been synthesized and characterized. The crystal structure of 1 shows a rectangular cavity with the dimensions of 11.44 x 7.21 Å. When the cavity size is tuned from 1 to 4, a dimension of 11.4 x 20.8 Å could be achieved, as revealed by the molecular modeling. These rectangles exhibit luminescence in solution at room temperature. In particular, compound 4 containing 1,4-bis(4′-pyridylethynyl)benzene (bpeb) as bridging ligand shows the excited-state lifetime of 495 ns. Fine-tuning of the cavity size of the rectangles improves their excited-state properties. These properties facilitate the study of excited-state electron-transfer reactions with electron acceptors and donors and host-guest binding. Crystallographic information: 1·6CH3COCH3 is monoclinic, P2 1/c, with a = 12.0890(2), b = 24.2982(2), and c = 12.8721(2) Å, β = 107.923(1)°, and Z = 2.

AB - A series of neutral luminescent molecular rectangles [{Re(CO) 3(μ-bpy)Br}{Re(CO)3(μ-L)Br}]2 (1-4) having fac-Re(CO)3Br as corners and 4,4′-bipyridine (bpy) as the bridging ligand on one side and other bipyridyl ligands of varying length (L) on the other side have been synthesized and characterized. The crystal structure of 1 shows a rectangular cavity with the dimensions of 11.44 x 7.21 Å. When the cavity size is tuned from 1 to 4, a dimension of 11.4 x 20.8 Å could be achieved, as revealed by the molecular modeling. These rectangles exhibit luminescence in solution at room temperature. In particular, compound 4 containing 1,4-bis(4′-pyridylethynyl)benzene (bpeb) as bridging ligand shows the excited-state lifetime of 495 ns. Fine-tuning of the cavity size of the rectangles improves their excited-state properties. These properties facilitate the study of excited-state electron-transfer reactions with electron acceptors and donors and host-guest binding. Crystallographic information: 1·6CH3COCH3 is monoclinic, P2 1/c, with a = 12.0890(2), b = 24.2982(2), and c = 12.8721(2) Å, β = 107.923(1)°, and Z = 2.

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JO - Inorganic Chemistry

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ER -

Synthesis and photophysical properties of neutral luminescent rhenium-based molecular rectangles

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