Dalton Transactions Blog

Fabrication of high performance, multi-layered phosphorescent organic light-emitting diodes (PhOLEDs) is often done by vacuum deposition of small organic molecules which can be a lengthy and costly process. Solution processing (layers can either be coated or printed from solution) is a more viable technique in terms of cost. However when it is used to make multilayered devices the lower layer can be affected by the solvent from upper layers due to inter-miscibility. It would be better to have electron and hole transporter materials together in a single layered device.

Yan Huang, Zhiyun Lu and colleagues have reported two novel orange iridium(III) complexes. The complexes were synthesized by modifying the phenyl moiety of the parent complex, (bt)₂Ir(acac) (bt = phenylbenzothiazole, acac = acetylacetonate). The new complexes have good thermostability and film amorphism meaning that they were able to be tested in a solution-processed single layer PhOLED. Both complexes demonstrated higher luminescence and efficiency than the parent complex. The improved characteristics of the two new Ir(III) complexes mean that they are promising candidates for use in low cost fabrication of PhOLEDs for large area displays.

To find out more, read the full Dalton Transactions article:

Iridium(III) complexes with enhanced film amorphism as guests for efficient orange solution-processed single-layer PhOLEDs with low efficiency roll-off
Jun Dai, Kaifeng Zhou, Ming Li, Huiqin Sun, Yunqing Chen, Shijian Su, Xuemei Pu, Yan Huang and Zhiyun Lu
Dalton Transactions, DOI: 10.1039/C3DT50834J

Congratulations to Philip Power, who has been awarded the inaugural Dalton Distinguished Lectureship in recognition of his work on transition metal and main group chemistry.

Supported by Dalton Transactions, this lectureship is awarded yearly to an outstanding senior researcher in the field of inorganic chemistry. Besides providing recognition for high quality chemistry research, it also facilitates interaction between researchers in different institutions.

Philip will be presenting his lecture at University of California, Berkeley on the 7th February 2014.

Philip received his B.A. from the University of Dublin in 1974, and commenced on his PhD research at the University of Sussex under M.F. Lappert. After graduating in 1977, he spent two years working as a postdoctoral researcher in Stanford under R.H. Holm. In 1981, he started a faculty position at University of California, Davis, where he is currently a Professor.

We would like to congratulate Trevor Hayton, who has been awarded the 2013-2014 Dalton Lectureship, in recognition of his work on actinides, especially his ground-breaking work on f-element chemistry.

This lectureship, sponsored by Dalton Transactions, aims to enhance communication between the best researchers, and is awarded yearly to an outstanding young investigator in the general field of inorganic chemistry.

Trevor will be presenting his lecture at University of California, Berkeley in early 2014, where he will also be spending time with the faculty, postdocs and students.

Trevor Hayton grew up in Surrey, British Columbia. In 1998, he received his B.Sc. in Chemistry from the University of British Columbia, whereupon he began his Ph.D. research, also at UBC, under the direction of Peter Legzdins. After graduating in 2003, he began a postdoctoral fellowship at Los Alamos National Laboratory, working under the direction of James M. Boncella. In 2006 he started a faculty position at University of California, Santa Barbara, where he is currently an Associate Professor.

Here are some of the most cited articles published in 2012. Read what has been making an impact in the inorganic world from Dalton Transactions.

Applications of luminescent inorganic and organometallic transition metal complexes as biomolecular and cellular probes
Kenneth Kam-Wing Lo, Alex Wing-Tat Choi and Wendell Ho-Tin Law
Dalton Trans., 2012, 41, 6021-6047
DOI: 10.1039/C2DT11892K

Carbene-stabilized main group diatomic allotropes
Yuzhong Wang and Gregory H. Robinson
Dalton Trans., 2012, 41, 337-345
DOI: 10.1039/C1DT11165E

New trends in polyoxometalate photoredox chemistry: From photosensitisation to water oxidation catalysis
Carsten Streb
Dalton Trans., 2012, 41, 1651-1659
DOI: 10.1039/C1DT11220A

A series of isostructural mesoporous metal–organic frameworks obtained by ion-exchange induced single-crystal to single-crystal transformation
Qingxia Yao, Junliang Sun, Kuo Li, Jie Su, Maxim V. Peskov and Xiaodong Zou
Dalton Trans., 2012, 41, 3953-3955
DOI: 10.1039/C2DT12088G

Double N–H bond activation of N,N′-bis-substituted hydrazines with stable N-heterocyclic silylene
Ramachandran Azhakar, Rajendra S. Ghadwal, Herbert W. Roesky, Jakob Hey and Dietmar Stalke
Dalton Trans., 2012,41, 1529-1533
DOI: 10.1039/C1DT11708D

A cationic iridium(III) complex showing aggregation-induced phosphorescent emission (AIPE) in the solid state: synthesis, characterization and properties
Guo-Gang Shan, Ling-Yu Zhang, Hai-Bin Li, Shuang Wang, Dong-Xia Zhu, Peng Li, Chun-Gang Wang, Zhong-Min Su and Yi Liao
Dalton Trans., 2012, 41, 523-530
DOI: 10.1039/C1DT11215E

Allylic alcohols as synthetic enolate equivalents: Isomerisation and tandem reactions catalysed by transition metal complexes
Nanna Ahlsten, Agnieszka Bartoszewicz and Belén Martín-Matute
Dalton Trans., 2012, 41, 1660-1670
DOI: 10.1039/C1DT11678A

Influence of terminal substitution on structural, DNA, Protein binding, anticancer and antibacterial activities of palladium(II) complexes containing 3-methoxy salicylaldehyde-4(N) substituted thiosemicarbazones
P. Kalaivani, R. Prabhakaran, E. Ramachandran, F. Dallemer, G. Paramaguru, R. Renganathan, P. Poornima, V. Vijaya Padma and K. Natarajan
Dalton Trans., 2012, 41, 2486-2499
DOI: 10.1039/C1DT11838B

Calcium manganese(IV) oxides: biomimetic and efficient catalysts for water oxidation
Mohammad Mahdi Najafpour, Babak Pashaei and Sara Nayeri
Dalton Trans., 2012, 41, 4799-4805
DOI: 10.1039/C2DT12189A

Small organometallic compounds as antibacterial agents
Malay Patra, Gilles Gasser and Nils Metzler-Nolte
Dalton Trans., 2012, 41, 6350-6358
DOI: 10.1039/C2DT12460B

This month sees the following articles in Dalton Transactions that are in the top ten most accessed:-

Recent progress in the synthesis of inorganic nanoparticles 
C. N. R. Rao, H. S. S. Ramakrishna Matte, Rakesh Voggu and A. Govindaraja  
Dalton Trans., 2012,41, 5089-5120 
DOI: 10.1039/C2DT12266A   

Ln(iii) complexes of a bis(5-(pyridine-2-yl)-1,2,4-triazol-3-yl)methane ligand: synthesis, structure and fluorescent properties 
Alexey N. Gusev, Miki Hasegawa, Galyna A. Nishchymenko, Victor F. Shul’gin, Svetlana B. Meshkova, Pavel Doga and Wolfgang Linert   
Dalton Trans., 2013,42, 6936-6943 
DOI: 10.1039/C3DT50297J   

Enhancing selective CO₂ adsorption via chemical reduction of a redox-active metal–organic framework 
Chanel F. Leong, Thomas B. Faust, Peter Turner, Pavel M. Usov, Cameron J. Kepert, Ravichandar Babarao, Aaron W. Thornton and Deanna M. D’Alessandro   
Dalton Trans., 2013, Advance Article 
DOI: 10.1039/C3DT00083D   

New two-dimensional Mn(ii) metal–organic framework featured spin canting 
Xin Chen, Yao-Yu Wang, Bin Liu, Bing Yin, Ping Liu and Qi-Zhen Shi   
Dalton Trans., 2013,42, 7092-7100 
DOI: 10.1039/C3DT32556C   

Synthesis, structures and magnetic characterizations of isostructural tetranuclear Ln₄ clusters (Ln = Dy, Ho, and Eu) 
Bong Ho Koo, Kwang Soo Lim, Dae Won Ryu, Woo Ram Lee, Eui Kwan Koh and Chang Seop Hong 
Dalton Trans., 2013,42, 7204-7209 
DOI: 10.1039/C3DT00056G   

Synthesis and characterization of hexa-coordinated Sn(iv) complexes of meso-aryl dipyrrins 
Ritambhara Sharma, Avijit Ghosh, Benedikt Wolfram, Martin Bröring and Mangalampalli Ravikanth   
Dalton Trans., 2013,42, 5627-5630 
DOI: 10.1039/C3DT00031A   

Cu₁₂ and Cd₁₆ coordination cages and their Cu₃ and Cd₃ subcomponents, and the role of inter-ligand p-stacking in stabilising cage complexes 
Andrew Stephenson, Daniel Sykes and Michael D. Ward 
Dalton Trans., 2013,42, 6756-6767 
DOI: 10.1039/C3DT50161B  

An unusual copper(i) halide-based metal–organic framework with a cationic framework exhibiting the release/adsorption of iodine, ion-exchange and luminescent properties 
Bingjing Xin, Guang Zeng, Lu Gao, Yun Li, Shanghua Xing, Jia Hua, Guanghua Li,  Zhan Shi and Shouhua Feng   
Dalton Trans., 2013, Advance Article 
DOI: 10.1039/C3DT50238D   

Synthesis, characterization and catalytic activity of copper(ii) complexes containing a redox-active benzoxazole iminosemiquinone ligand 
S. Esmael Balaghi, Elham Safaei, Linus Chiang, Edwin W. Y. Wong, Didier Savard, Ryan M. Clarke and Tim Storr 
Dalton Trans., 2013,42, 6829-6839 
DOI: 10.1039/C3DT00004D   

Facile one-pot synthesis of uniform TiO₂–Ag hybrid hollow spheres with enhanced photocatalytic activity 
Sunli Wang, Huanhuan Qian, Yong Hu, Wei Dai, Yijun Zhong,  Jiafu Chen and Xiao Hu   
Dalton Trans., 2013,42, 1122-1128 
DOI: 10.1039/C2DT32040A   

Why not take a look at the articles today and blog your thoughts and comments below.

Fancy submitting an article to Dalton Transactions? Then why not submit to us today or alternatively email us your suggestions.