Liquid-Phase Epitaxy of Multicomponent Layer-Based Porous Coordination Polymer Thin Films of [M(L)(P)0.5] Type: Importance of Deposition Sequence on the Oriented Growth
The progressive liquid‐phase layer‐by‐layer (LbL) growth of anisotropic multicomponent layer‐based porous coordination polymers (PCPs) of the general formula [M(L)(P)0.5] (M: Cu2+, Zn2+; L: dicarboxylate linker; P: dinitrogen pillar ligand) was investigated by using either pyridyl‐ or carboxyl‐termi...
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Published in | Chemistry : a European journal Vol. 17; no. 5; pp. 1448 - 1455 |
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Main Authors | , , , , , , , , , , , , , , |
Format | Journal Article |
Language | English |
Published |
Weinheim
WILEY-VCH Verlag
01.02.2011
WILEY‐VCH Verlag Wiley Subscription Services, Inc |
Subjects | |
Online Access | Get full text |
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Summary: | The progressive liquid‐phase layer‐by‐layer (LbL) growth of anisotropic multicomponent layer‐based porous coordination polymers (PCPs) of the general formula [M(L)(P)0.5] (M: Cu2+, Zn2+; L: dicarboxylate linker; P: dinitrogen pillar ligand) was investigated by using either pyridyl‐ or carboxyl‐terminated self‐assembled monolayers (SAMs) on gold substrates as templates. It was found that the deposition of smooth, highly crystalline, and oriented multilayer films of these PCPs depends on the conditions at the early growth cycles. In the case of a two‐step process with an equimolar mixture of L and P, growth along the [001] direction is strongly preferred. However, employing a three‐step scheme with full separation of all components allows deposition along the [100] direction on carboxyl‐terminated SAMs. Interestingly, the growth of additional layers on top of previously grown oriented seeding layers proved to be insensitive to the particular growth scheme and full retention of the initial orientation, either along the [001] or [100] direction, was observed. This homo‐ and heteroepitaxial LbL growth allows full control over the orientation and the layer sequence, including introduction of functionalized linkers and pillars.
One layer at a time: The stepwise liquid‐phase layer‐by‐layer growth of anisotropic, multicomponent layer‐based porous coordination polymers (PCPs) of the general formula [M(L)(P)0.5] (M: Cu2+, Zn2+; L: dicarboxylate linker, P: dinitrogen pillar ligand) was investigated by using either pyridyl‐ or carboxyl‐terminated self‐assembled monolayers as templates. Highly oriented PCP multilayers were selectively grown along the [100] and [001] directions (see figure). |
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Bibliography: | German Research Foundation istex:3A8625A2B451F610392DF091920CDDA8CB586252 DFG ArticleID:CHEM201002381 Ruhr-University Research School ark:/67375/WNG-W2N4NJ84-H ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23 |
ISSN: | 0947-6539 1521-3765 |
DOI: | 10.1002/chem.201002381 |