Issue 1, 2013
From the journal:

Dalton Transactions

Pt(ii) diimine complexes bearing carbazolyl-capped acetylide ligands: synthesis, tunable photophysics and nonlinear absorption†

Rui Liu,ab   Hongbin Chen,a   Jin Chang,ac   Yuhao Li,b   Hongjun Zhu*a  and  Wenfang Sun*b  

* Corresponding authors

a Department of Applied Chemistry, College of Science, Nanjing University of Technology, Nanjing 210009, P.R. China
E-mail: zhuhj@njut.edu.cn
Fax: +86-25-83587428

b Department of Chemistry and Biochemistry, North Dakota State University, Fargo, ND 58108-6050, USA
E-mail: Wenfang.Sun@ndsu.edu
Fax: (+1) 701-231-8831

c Discipline of Chemistry, Queensland University of Technology, 2 George St., Brisbane, Australia

Abstract

A series of new Pt(II) diimine complexes with different carbazolyl-capped acetylide ligands (Pt-1–Pt-5) were synthesized and characterized. Their photophysical properties were investigated systematically via spectroscopic and theoretical methods. All complexes exhibit ligand-centered 1π,π* transitions in the UV region, and broad, structureless metal-to-ligand charge transfer (1MLCT)/ligand-to-ligand charge transfer (1LLCT) absorption bands in the visible spectral region. All complexes are emissive in solution at room temperature, with the emitting state being tentatively assigned to the 3MLCT/3LLCT states for Pt-1–Pt-4, and the emitting state of Pt-5 exhibiting a switch from the 3π,π* state in high-polarity solvents to the 3MLCT state in low-polarity solvents. Complexes Pt-1–Pt-5 all exhibit moderate triplet transient absorption (TA) from the visible to the NIR region, where reverse saturable absorption (RSA) could occur. The spectroscopic studies and theoretical calculations indicate that the photophysical properties of these Pt complexes can be tuned drastically by the carbazolyl-capped acetylide ligand, which would be useful for rational design of transition-metal complexes with high emission quantum yield, long excited-state lifetime, broadband excited-state absorption, and strong nonlinear transmittance for organic light-emitting and/or broadband nonlinear transmission applications.

Graphical abstract: Pt(ii) diimine complexes bearing carbazolyl-capped acetylide ligands: synthesis, tunable photophysics and nonlinear absorption

About
Cited by
Related
Download options Please wait...

Supplementary files

Article information

DOI
https://doi.org/10.1039/C2DT31869E
Article type
Paper
Submitted
15 Aug 2012
Accepted
17 Sep 2012
First published
19 Sep 2012

Dalton Trans., 2013,42, 160-171

Permissions

Request permissions

Pt(II) diimine complexes bearing carbazolyl-capped acetylide ligands: synthesis, tunable photophysics and nonlinear absorption

R. Liu, H. Chen, J. Chang, Y. Li, H. Zhu and W. Sun, Dalton Trans., 2013, 42, 160 DOI: 10.1039/C2DT31869E

To request permission to reproduce material from this article, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Read more about how to correctly acknowledge RSC content.

Social activity

Spotlight

Advertisements