Author Archive

Hot Article: Shaping uranium oxide hydroxide hydrate species

In this CrystEngComm Hot Article, Pal et al., describe a modified hydrothermal (MHT) reaction for the nucleation, growth and reversible dehydration of a well defined uranium oxide hydroxide hydrate species.

Shaping nano-/microcrystals using a ‘bottom-up’ method needs considerable attention.   This is important as the morphology, dimensionality and size of the material can have a effect on its physical and chemical properties.

Read for free until 22nd March 2011 and find out more about these different crystal morphologies here.

Interested in amazing crystal images?  Why not check out our Crystal Clear section.

Morphology controlled uranium oxide hydroxide hydrate for catalysis, luminescence and SERS studies
Mukul Pradhan, Sougata Sarkar, Arun Kumar Sinha, Mrinmoyee Basu and Tarasankar Pal*
CrystEngComm, 2011, DOI: 10.1039/C0CE00666A, Paper

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Hot Article: Controlling the size of nanocrystals

In this new CrystEngComm Hot Article, a team of Italian scientists led by M. Lucia Curri have demonstrated that monomodal or bimodal PbS nanocrystals can be produced in a single experiment.  The group were able to shed light on the mechanism of self organization in these assemblies with an aim to predict the the formation of the solid crystal phases.

It was found that the effect of several parameters, including solvent composition, nanocrystal concentration, size ratio of the two populations, strongly influenced the formation of the superlattice and the final geometry.

The ability in engineering nanocrystal building blocks is essential for designing novel architectured materials.

Find out more about this work here. FREE to read until 10th March 2011!

Self-organization of mono- and bi-modal PbS nanocrystal populations in superlattices
Michela Corricelli, Davide Altamura, Liberato De Caro, Antonella Guagliardi, Andrea Falqui, Alessandro Genovese, Angela Agostiano, Cinzia Giannini, Marinella Striccoli and M. Lucia Curri
CrystEngComm, 2011, Advance Article, DOI: 10.1039/C0CE00874E

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Psychedelic biodegradable copolyesters

Check out these amazing images in a recent CrystEngComm Advance Article by Zhaobin Qiu and Yan Yang.

Crystallisation kinectics and morphology of biodegradable poly(butylene succinate-co-ethylene succinate) depend significantly on both the comonomer composition and crystallisation temperature.  This should yield a better understanding of the structure-property relationship of biodegradable polymers.

Crystallisation kinetics and morphology of biodegradable poly(butylene succinate-co-ethylene succinate) copolyesters: effects of comonomer composition and crystallization temperature
Yan Yang and Zhaobin Qiu*
CrystEngComm, 2011, Advance Article, DOI: 10.1039/c0ce00598c

For more fascinating crystal images, why not take a look at our Crystal Clear blog posts

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Highlight: Controlling flexibility in crystal engineering

Here, Christopher Pigge (University of Iowa, US) discusses both the advantages and disadvantages that can arise when using flexible components in crystal engineering.  Both organic (mainly triaroylbenzenes) and metal-organic framework systems derived from flexible ligands are reviewed.

Read the Highlight by Christopher Pigge here.

Losing control? “Design” of crystalline organic and metal-organic networks using conformationally flexible buidling blocks
F. Christopher Pigge
CrystEngComm, 2011, Advance Article, DOI: 10.1039/c0ce00417k

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CrystEngComm issue 3 – now online!

The latest issue of CrystEngComm is now online.  Check it out!

The striking cover image depicts a vending machine for different layered motifs.  In pressing the different molecule buttons, you get either a single layer, bilayer or polar single layer networks (from top to bottom).

Take a closer look at the cover image here.

Alicia Beatty’s group from the Univeristy of Missouri-St Louis, USA, describe the syntheses and crystal structures of lamellar solids constructed from 3,5-pyrazole dicarboxylic acid and amines and that sterically demanding groups impose different hydrogen-bonding connectivity.  In the past this combination has resulted in one recurring layer motif.

Want to read more about Beatty et al.’s paper?

Exceptions to the rule: new hydrogen-bonded networks from an old reliable
Onome Ugono, Nigam P. Rath and Alicia M. Beatty*
CrystEngComm, 2011, 13, 753-758

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HOT Article: Turkey tendons as collagen scaffolds

Read this CrystEngComm HOT article by Gower et al. for FREE until 7th February 2011

A multinational team of scientists have demonstrated that biogenic collagen scaffolds obtained from turkey tendon, which consist of densely packed and oriented collagen fibrils, can also be mineralized by a polymer-induced liquid-precursor (PILP) process.

Synthetic collagen scaffolds have previously been used to demonstrate that intrafibrillar mineralization can be achieved with the PILP process which enables the unique nanostructured architecture of bone to be reproduced in vitro.

Turkey tendon is an excellent model of secondary bone formation because it mineralizes in response to increased stresses from the weight of the growing bird. The collagen is directly mineralized, leading to a collagen–mineral phase that resembles secondary bone.

Oriented hydroxyapatite in turkey tendon mineralized via the polymer-induced liquid-precursor (PILP) process

Sang Soo Jee, Rajendra Kumar Kasinath, Elaine DiMasi, Yi-Yeoun Kimae and Laurie Gower

CrystEngComm, 2011, Advance Article DOI: 10.1039/C0CE00605J, Paper

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