Dalton Transactions Blog

In this Dalton Transactions Hot article, calcium silicate microparticles doped with rare earth ions were loaded with ibuprofen and tested for their drug delivery properties.

The microparticles showed strong luminescence, which increased as the ibuprofen was released, allowing the drug delivery to be monitored, a highly useful property in therapeutics.

Preparation of luminescent and mesoporous Eu3+/Tb3+ doped calcium silicate microspheres as drug carriers via a template route
Xiaojiao Kang, Shanshan Huang, Piaoping Yang, Ping’an Ma, Dongmei Yang and Jun Lin
Dalton Trans., 2011, Advance Article
DOI: 10.1039/C0DT01390K, Paper

READ FOR FREE until 5th February

In this Dalton Transactions Hot article, the kinetics of rhodium porphyrin b-hydroxy alkyl reactions in water and DMSO are investigated.

Understanding the mechanics of these types of reaction will lead to better selectivity in catalytic oxidation of alkenes and, as the authors say,  ‘may lead to the development of water soluble catalysts’. These can then be used to produce a green form of oxidation chemistry.

FREE TO READ until January 20th

Mechanistic comparison of β-H elimination, β-OH elimination, and nucleophilic displacement reactions of β-hydroxy alkyl rhodium porphyrin complexes
Bing Wu, Jiadi Zhang, Lin Yun and Xuefeng Fu
Dalton Trans., 2011, Advance Article
DOI: 10.1039/C0DT01146K, Paper

In this Dalton Transactions Hot article, researchers at Nanjing University, China have developed a fluorescent sensor to detect the biologically important anion pyrophosphate.

Pyrophosphate in the body is integral to the production of ATP and DNA, and is involved in preventing the formation of hydroxyapatite in extracellular fluid. A lack of pyrophosphate leads to medial calcification, while an excess has been linked to calcium pyrophosphate dihydrate deposition disease, a form of rheumatism.

In this paper the authors make a ratiometric fluorescent sensor using a naphthalene appended tetraazamacrocycle (1)-Zn²⁺ complex. The sensor is not influenced by its environment, as the ratio of fluorescent intensities at two different wavelengths is measured, rather than using one lone fluorescence, as in the conventional method.

READ FOR FREE until January 20th.

A Zn2+-specific turn-on fluorescent probe for ratiometric sensing of pyrophosphate in both water and blood serum
Jinghan Wen, Zhirong Geng, Yuxin Yin, Zhong Zhang and Zhilin Wang
Dalton Trans., 2011, Advance Article
DOI: 10.1039/C0DT01262A, Paper

Shilun Qiu, Guangshan Zhu and co-workers have made a microporous organic-inorganic silsesquioxane-based framework, JUC-Z1, which is an effective absorber of both benzene and water. The team used a Yamamoto-type of Ullmann cross-coupling reaction to make the framework. ‘Its ability to selectively adsorb benzene makes JUC-Z1 greatly promising for applications dealing with environmental aromatic pollutant problems,’ say Qiu and Zhu.

Read more in their Dalton Transactions Hot Article which we have made FREE to access until the 12th January.

A covalently-linked microporous organic-inorganic hybrid framework containing polyhedral oligomeric silsesquioxane moieties 
Ye Peng, Teng Ben, Jun Xu, Ming Xue, Xiaofei Jing, Feng Deng, Shilun Qiu and Guangshan Zhu
Dalton Trans., 2011, Advance Article DOI: 10.1039/C0DT01268H, Paper

In their Dalton Transactions Hot Article, Mario Wriedt and Christian Näther from Kiel in Germany, use thermal decomposition reactions to produce μ-1,5 dicyanamide extended structures. Find out more in this article which you can read for FREE until 12th January!

Directed synthesis of μ-1,3,5 bridged dicyanamides by thermal decomposition of μ-1,5 bridged precursor compounds 
Mario Wriedt and Christian Näther
Dalton Trans., 2011, Advance Article   DOI: 10.1039/C0DT00864H, Paper

Hiromi Tobita and colleagues look into the reactions of bis(silyl)hydrido molybdenum and tungsten complexes in this Dalton Transactions Hot article. They were able to generate a 16-electron species, which when reacted with nitriles led to hydrosilylation of their CN triple bonds to give N-silylimine complexes, even at room temperature.

Synthesis and characterisation of hydrido molybdenum and tungsten complexes having a hemilabile tridentate Si,Si,O-ligand: observation of stepwise hydrosilylation of a nitrile to form an N-silylimine on the metal centre
Takashi Komuro, Rockshana Begum, Rikima Ono and Hiromi Tobita
Dalton Trans., 2011, Advance Article
DOI: 10.1039/C0DT01047B, Paper

READ FOR FREE  until 11th January

Controlling the growth of low dimensional nanostructures of organometallic complexes with well-defined properties is a significant and ongoing challenge within nanoscience and nanotechnology.

Huibiao Liu, Yuliang Li and co-workers, from the CAS Key Laboratory of Organic Solids in Beijing have made inroads into this challenge by controlling the growth of the nanowire–nanotube junctions of a dichloro-bridged dimeric iridium complex optimising the material for use in LEDs.

Find out more in their Dalton Transactions Hot Article FREE to read until 12th January.

Controlling the growth of low dimension nanostructures of an iridium complex 
Haowei Lin, Huibiao Liu, Xuemin Qian, Canbin Ouyang and Yuliang Li
Dalton Trans., 2011, Advance Article
DOI: 10.1039/C0DT01128B, Paper

In this Dalton Transactions Hot Article, Ingo Krossing and colleagues use Al salts to stabilise trihalocarbenium CX³⁺ ions extending this tricky-to-make class of carbocations to chlorine and bromine. 

Find out by reading their Dalton Transactions article below….FREE to read until the 6th January 2011.

CCl³⁺ and CBr³⁺ salts with the [Al(ORF)₄]− and [(FRO)₃Al–F–Al(ORF)₃]⁻ anions (RF = C(CF₃)₃) 
Anna J. Lehner, Nils Trapp, Harald Scherer and Ingo Krossing
Dalton Trans., 2011, Advance Article
DOI: 10.1039/C0DT01076F, Paper

In this Dalton Transactions Hot article, Shen Lin and co-workers make hybrid frameworks of molybdenum oxide chains and silver tetrazolate polymers.

The remarkable influence of the organic templating agent on the microstructure of the molybdenum oxide frameworks is demonstrated and discussed.

Inorganic–organic hybrid compounds based on molybdenum oxide chains and tetrazolate-bridged polymeric silver cations
Ming-Xing Yang, Li-Juan Chen, Shen Lin, Xiao-Hua Chen and Hua Huang
Dalton Trans., 2011, Advance Article
DOI: 10.1039/C0DT00781A , Paper

READ FOR FREE until January