Aggregation-Induced Emission of EuIII Complexes Balanced with Bulky and Amphiphilic Imidazolium Cations in Ethanol/Water Binary Mixtures

Chemistry : a European Journal
Geping ZhangJingcheng Hao

Abstract

A series of EuIII complexes with thenoyltrifluoroacetone (tta) as the ligands were synthesized, which are balanced with imidazolium cations bearing naphthyl and branched alkyl chains. The complex with the longest alkyl chain (1Eu(tta)4 ) shows aggregation behavior in ethanol and water mixtures. It exists as individuals at low water percentages (VH2O ), and form particles with solid interiors at VH2O ≥50 % the sizes of which decrease with the increase of VH2O . At VH2O =90 %, vesicles were observed. The aggregation of 1Eu(tta)4 in ethanol and water binary mixtures induced changes of the photoluminescence (PL) properties where an abrupt increase in PL intensity, quantum yield, and lifetime were noticed above VH2O =50 %. This PL enhancement can be explained by the encapsulation of 1Eu(tta)4 inside the aggregates, preventing it from quenching by the active hydroxyls of water molecules. Contrary to the aggregation-induced emission (AIE) of the Eu complex, the naphthyl group in the imidazolium cation exhibited an aggregation-caused quenching (ACQ) effect. When the length of the alkyl chain in the imidazolium cation is reduced, no PL enhancement can be observed owing to the difficulty in forming the aggregates.

References

Nov 15, 2005·Chemical Society Reviews·Jean-Claude G Bünzli, Claude Piguet
Oct 19, 2006·Journal of the American Chemical Society·Peter NockemannKoen Binnemans
May 24, 2007·Chemical Reviews·Koen Binnemans
Sep 2, 2008·Angewandte Chemie·Sifu TangAnja-Verena Mudring
Dec 18, 2008·Dalton Transactions : an International Journal of Inorganic Chemistry·Kyra LunstrootAndré Vioux
Mar 28, 2009·Accounts of Chemical Research·Evan G MooreKenneth N Raymond
Dec 22, 2009·Chemical Society Reviews·Svetlana V Eliseeva, Jean-Claude G Bünzli
Jan 26, 2010·The Journal of Chemical Physics·J MezykF Meinardi
Jul 30, 2011·Chemical Society Reviews·Yuning HongBen Zhong Tang
Sep 22, 2011·Journal of the American Chemical Society·Jing LiuNobuo Kimizuka
Mar 1, 2012·Angewandte Chemie·Sukumaran Santhosh BabuTakashi Nakanishi
Sep 15, 2012·Chemical Society Reviews·Jing Feng, Hongjie Zhang
Mar 1, 2013·Langmuir : the ACS Journal of Surfaces and Colloids·Hongguang LiTakashi Nakanishi
Jun 6, 2013·Nature Communications·Sukumaran Santhosh BabuTakashi Nakanishi
Aug 27, 2013·Chemical Communications : Chem Comm·Sukumaran Santhosh Babu, Takashi Nakanishi
Oct 1, 2013·Langmuir : the ACS Journal of Surfaces and Colloids·Masa-Aki MorikawaNobuo Kimizuka
Jul 1, 2014·Advanced Materials·Ju MeiBen Zhong Tang
Oct 23, 2015·Chemical Reviews·Ju MeiBen Zhong Tang
Mar 2, 2016·Chemistry : a European Journal·Hongxia ZhuJingcheng Hao
Sep 30, 2016·Langmuir : the ACS Journal of Surfaces and Colloids·Jing LiuNobuo Kimizuka
Apr 26, 2017·Langmuir : the ACS Journal of Surfaces and Colloids·Pritam ChoudhuryPrasanta Kumar Das
Sep 2, 2017·Chemical Communications : Chem Comm·Avijit Ghosh, Takashi Nakanishi

❮ Previous
Next ❯

Related Concepts

Trending Feeds

COVID-19

Coronaviruses encompass a large family of viruses that cause the common cold as well as more serious diseases, such as the ongoing outbreak of coronavirus disease 2019 (COVID-19; formally known as 2019-nCoV). Coronaviruses can spread from animals to humans; symptoms include fever, cough, shortness of breath, and breathing difficulties; in more severe cases, infection can lead to death. This feed covers recent research on COVID-19.

Blastomycosis

Blastomycosis fungal infections spread through inhaling Blastomyces dermatitidis spores. Discover the latest research on blastomycosis fungal infections here.

Nuclear Pore Complex in ALS/FTD

Alterations in nucleocytoplasmic transport, controlled by the nuclear pore complex, may be involved in the pathomechanism underlying multiple neurodegenerative diseases including Amyotrophic Lateral Sclerosis and Frontotemporal Dementia. Here is the latest research on the nuclear pore complex in ALS and FTD.

Applications of Molecular Barcoding

The concept of molecular barcoding is that each original DNA or RNA molecule is attached to a unique sequence barcode. Sequence reads having different barcodes represent different original molecules, while sequence reads having the same barcode are results of PCR duplication from one original molecule. Discover the latest research on molecular barcoding here.

Chronic Fatigue Syndrome

Chronic fatigue syndrome is a disease characterized by unexplained disabling fatigue; the pathology of which is incompletely understood. Discover the latest research on chronic fatigue syndrome here.

Evolution of Pluripotency

Pluripotency refers to the ability of a cell to develop into three primary germ cell layers of the embryo. This feed focuses on the mechanisms that underlie the evolution of pluripotency. Here is the latest research.

Position Effect Variegation

Position Effect Variagation occurs when a gene is inactivated due to its positioning near heterochromatic regions within a chromosome. Discover the latest research on Position Effect Variagation here.

STING Receptor Agonists

Stimulator of IFN genes (STING) are a group of transmembrane proteins that are involved in the induction of type I interferon that is important in the innate immune response. The stimulation of STING has been an active area of research in the treatment of cancer and infectious diseases. Here is the latest research on STING receptor agonists.

Microbicide

Microbicides are products that can be applied to vaginal or rectal mucosal surfaces with the goal of preventing, or at least significantly reducing, the transmission of sexually transmitted infections. Here is the latest research on microbicides.