NDLI: Emission properties and Cu(I)–Cu(I) interaction in 2-coordinate dicopper(I)-bis(N-heterocyclic)carbene complexes

Content Provider	World Health Organization (WHO)-Global Index Medicus
Author	Takao, Koichiro Tsubomura, Taro Nishikawa, Michihiro Sano, Taichi Washimi, Masaya
Description	Author Affiliation: Nishikawa M ( Department of Materials and Life Science, Seikei University, Kichijoji-kitamachi, Musashino, Tokyo 180-8633, Japan. tsubomura@st.seikei.ac.jp.); Sano T ( Department of Materials and Life Science, Seikei University, Kichijoji-kitamachi, Musashino, Tokyo 180-8633, Japan. tsubomura@st.seikei.ac.jp.); Washimi M ( Department of Materials and Life Science, Seikei University, Kichijoji-kitamachi, Musashino, Tokyo 180-8633, Japan. tsubomura@st.seikei.ac.jp.); Takao K ( Research Laboratory for Nuclear Reactors, Tokyo Institute of Technology, 2-12-1 Ookayama, Meguro-ku, Tokyo 152-8550, Japan.); Tsubomura T ( Department of Materials and Life Science, Seikei University, Kichijoji-kitamachi, Musashino, Tokyo 180-8633, Japan. tsubomura@st.seikei.ac.jp.)
Abstract	The synthesis, characterization, and emission properties of 2-coordinate dicopper(I) complexes bearing two trimethylene-bridged bis-NHC ligands, $[Cu_{2}(L3Me)_{2}](PF_{6})_{2}$ (1), $[Cu_{2}(L3Et)_{2}](PF_{6})_{2}$ (2), $[Cu_{2}(L3Bu)_{2}](PF_{6})_{2}$ (3), $[Cu_{2}(L3MeOPh)_{2}](PF_{6})_{2}$ (4) and $[Cu_{2}(L3Mes)_{2}](PF_{6})_{2}$ (5), where L3R denotes trimethylene-bridged bis(N-heterocyclic)carbene (NHC) ligand substituted by two R groups at the nitrogen atoms of NHC, have been investigated. The quantum yield, Φ, and the lifetime, τ, of the emission of 2, are 0.21 and 25 μs, respectively in methanol, which is a well-known solvent for quenching the luminescence of many copper(I) complexes. The 8-shaped geometry of the dicopper(I) complexes brings a considerable copper(I)–copper(I) interaction which affects the luminescent properties. Additionally, we find that methoxyphenyl and mesityl groups substituted at the nitrogen atom of the NHC moiety drastically stabilize the bis(NHC) copper(I) complexes even in air-saturated $acetone-d_{6}.$
ISSN	14779226
Issue Number	30
Journal	Dalton Trans.
Volume Number	45
e-ISSN	13645447
Language	English
Publisher	Royal Society of Chemistry
Publisher Date	2016-07-26
Publisher Place	Great Britain (UK)
Access Restriction	Subscribed
Subject Keyword	Chemistry
Content Type	Text
Resource Type	Article
Subject	Inorganic Chemistry

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in