Document Detail


Coordination self-assembly of tetranuclear Pt(ii) macrocycles with an organometallic backbone for sensing of acyclic dicarboxylic acids.
MedLine Citation:
PMID:  23258385     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
Coordination self-assembly of a series of tetranuclear Pt(ii) macrocycles containing an organometallic backbone incorporating ethynyl functionality is presented. The 1 : 1 combination of a linear acceptor 1,4-bis[trans-Pt(PEt(3))(2)(NO(3))(ethynyl)]benzene () with three different dipyridyl donor 'clips' () afforded three [2 + 2] self-assembled Pt(II)(4) macrocycles () in quantitative yields, respectively [ = 1,3-bis(3-pyridyl)isothalamide; = 1,3-bis(3-pyridyl)ethynylbenzene; = 1,8-bis(4-pyridyl)ethynylanthracene]. These macrocycles were characterized by multinuclear NMR ((1)H and (31)P); ESI-MS spectroscopy and the molecular structures of and were established by single crystal X-ray diffraction analysis. These macrocycles () are fluorescent in nature. The amide functionalized macrocycle is used as a receptor to check the binding affinity of aliphatic acyclic dicarboxylic acids. Such binding affinity is examined using fluorescence and UV-Vis spectroscopic methods. A solution state fluorescence study showed that macrocycle selectively binds (K(SV) = 1.4 × 10(4) M(-1)) maleic acid by subsequent enhancement in emission intensity. Other aliphatic dicarboxylic acids such as fumaric, succinic, adipic, mesaconic and itaconic acids caused no change in the emission spectra; thereby demonstrating its potential use as a macrocyclic receptor in distinction of maleic acid from other aliphatic dicarboxylic acids.
Authors:
Sankarasekaran Shanmugaraju; Arun Kumar Bar; Harshal Jadhav; Dohyun Moon; Partha Sarathi Mukherjee
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2012-12-20
Journal Detail:
Title:  Dalton transactions (Cambridge, England : 2003)     Volume:  -     ISSN:  1477-9234     ISO Abbreviation:  Dalton Trans     Publication Date:  2012 Dec 
Date Detail:
Created Date:  2012-12-21     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  101176026     Medline TA:  Dalton Trans     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Affiliation:
Department of Inorganic and Physical Chemistry, Indian Institute of Science, Bangalore 560 012, India. psm@ipc.iisc.ernet.in.
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