scholarly journals Crystal Engineering Approach To Forming Cocrystals of Amine Hydrochlorides with Organic Acids. Molecular Complexes of Fluoxetine Hydrochloride with Benzoic, Succinic, and Fumaric Acids

2004 ◽  
Vol 126 (41) ◽  
pp. 13335-13342 ◽  
Author(s):  
Scott L. Childs ◽  
Leonard J. Chyall ◽  
Jeanette T. Dunlap ◽  
Valeriya N. Smolenskaya ◽  
Barbara C. Stahly ◽  
...  
Keyword(s):  
Organic Acids ◽  
Crystal Engineering ◽  
Molecular Complexes ◽  
Engineering Approach ◽  
Fluoxetine Hydrochloride ◽  
Amine Hydrochlorides

scholarly journals Crystal Engineering Approach for Fabrication of Inverted Perovskite Solar Cell in Ambient Conditions

Energies ◽  
2021 ◽  
Vol 14 (6) ◽  
pp. 1751
Author(s):  
Inga Ermanova ◽  
Narges Yaghoobi Nia ◽  
Enrico Lamanna ◽  
Elisabetta Di Bartolomeo ◽  
Evgeny Kolesnikov ◽  
...  
Keyword(s):  
Solar Cell ◽  
Crystal Engineering ◽  
High Performance ◽  
Perovskite Solar Cells ◽  
Perovskite Solar Cell ◽  
Layer By Layer ◽  
Ambient Conditions ◽  
Sequential Method ◽  
Engineering Approach ◽  
Hole Transporting

In this paper, we demonstrate the high potentialities of pristine single-cation and mixed cation/anion perovskite solar cells (PSC) fabricated by sequential method deposition in p-i-n planar architecture (ITO/NiOX/Perovskite/PCBM/BCP/Ag) in ambient conditions. We applied the crystal engineering approach for perovskite deposition to control the quality and crystallinity of the light-harvesting film. The formation of a full converted and uniform perovskite absorber layer from poriferous pre-film on a planar hole transporting layer (HTL) is one of the crucial factors for the fabrication of high-performance PSCs. We show that the in-air sequential deposited MAPbI3-based PSCs on planar nickel oxide (NiOX) permitted to obtain a Power Conversion Efficiency (PCE) exceeding 14% while the (FA,MA,Cs)Pb(I,Br)3-based PSC achieved 15.6%. In this paper we also compared the influence of transporting layers on the cell performance by testing material depositions quantity and thickness (for hole transporting layer), and conditions of deposition processes (for electron transporting layer). Moreover, we optimized second step of perovskite deposition by varying the dipping time of substrates into the MA(I,Br) solution. We have shown that the layer by layer deposition of the NiOx is the key point to improve the efficiency for inverted perovskite solar cell out of glove-box using sequential deposition method, increasing the relative efficiency of +26% with respect to reference cells.

Supramolecular single-stranded calix[4]arene helices—towards a crystal engineering approach of homochiral assemblies

CrystEngComm ◽  
2011 ◽  
Vol 13 (12) ◽  
pp. 3979 ◽  
Author(s):  
Michael Mastalerz ◽  
Hebert Jesus Estevez Rivera ◽  
Iris M. Oppel ◽  
Gerald Dyker
Keyword(s):  
Crystal Engineering ◽  
Engineering Approach

scholarly journals Tuning colour in multi-component complexes: Molecular disorder as a design tool

2014 ◽  
Vol 70 (a1) ◽  
pp. C1007-C1007
Author(s):  
Charlotte Jones ◽  
Chick Wilson ◽  
Lynne Thomas
Keyword(s):  
Single Crystal ◽  
Crystal Engineering ◽  
Crystal Packing ◽  
Colour Change ◽  
Molecular Complexes ◽  
Design Tool ◽  
Layered Crystal ◽  
Molecular Rearrangement ◽  
Organic Systems ◽  
Inorganic Systems

The key aim of multi-component crystallisation is modification of the physicochemical properties for a specific task.[1] Tuning colour using molecular components is a relatively unexplored area, which is surprising given the possible advantages in pigment development. In crystalline materials, the optical characteristics are not solely dependent on the molecules but also on the crystal packing;[2] it follows that the optical properties could be modified using crystal engineering techniques. We have systematically investigated co-crystallising haloanilines with dinitrobenzoic acids to build an understanding of the intermolecular interactions. Molecular disorder of one or more of the components tends to lead to layered crystal structures that include stacking interactions and therefore strong colour, indicating that molecular disorder is desirable. Defects in inorganic systems are routinely exploited as a route to enhancing or introducing physical properties but similar effects in organic systems are yet to be properly exploited. We will discuss the methods by which disorder can be designed into molecular complexes, and the local ordering effects which give rise to strong diffuse scattering. Additionally we have identified a pair of thermochromic molecular complexes, 2-iodoaniline/2-bromoaniline 3,4-dinitrobenzoic acid, where disorder appears to be crucial in lending the materials their properties. Both complexes undergo a temperature-induced colour change from red to yellow corresponding to a significant molecular rearrangement. The thermochromic transition is a single-crystal to single-crystal effect; the role of molecular disorder as a facilitator for the molecular rearrangement, maintaining the crystal integrity, will be discussed. Despite the complexes being isostructural, only the bromoaniline complex shows reversible thermochromic behaviour; subtleties in the manifestation of this disorder can explain the differences in the reversibility of the transition.

An easy access to an organometallic low molecular weight gelator: a crystal engineering approach

2008 ◽  
Vol 49 (19) ◽  
pp. 3052-3055 ◽  
Author(s):  
Pathik Sahoo ◽  
D. Krishna Kumar ◽  
Darshak R. Trivedi ◽  
Parthasarathi Dastidar
Keyword(s):  
Molecular Weight ◽  
Crystal Engineering ◽  
Easy Access ◽  
Low Molecular Weight ◽  
Engineering Approach ◽  
Low Molecular Weight Gelator
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