Cation Complexation, Photochromism, and Photoresponsive Ion-Conducting Behavior of Crowned Spirobenzopyran Vinyl Polymers

Kimura, Kazuhiro; Sakamoto, Hidefumi; Uda, Ryoko M.

doi:10.1021/ma035644g

Cited by 30 publications

(16 citation statements)

References 22 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Therefore, investigations dealing with immobilisation of photoresponsive crown compounds in polymeric materials are of considerable interest. [58][59][60] Currently, development works on luminescent sensors on the basis of quantum dots modified by crown compounds are in progress. [61] The design of nanostructured systems incorporating macrocyclic compounds is a new trend in the research into optical chemosensors and photoswitchable devices.…”

Section: Discussionmentioning

confidence: 99%

Crown Ether Based Optical Molecular Sensors and Photocontrolled Ionophores

Ushakov¹,

Алфимов²,

Gromov³

2010

MHC

View full text Add to dashboard Cite

show abstract

Section: Discussionmentioning

confidence: 99%

Crown Ether Based Optical Molecular Sensors and Photocontrolled Ionophores

Ushakov¹,

Алфимов²,

Gromov³

2010

MHC

View full text Add to dashboard Cite

show abstract

“…27,28 The complexing ability of 16 toward alkali metal ions was estimated by a solvent-extraction technique, being in the order of Na…”

Section: ·6 Photochromic Crown Ether Polymersmentioning

confidence: 99%

Analytical and Separation Chemistry by Taking Advantage of Organic Photochromism Combined with Macrocyclic Chemistry

Kimura

Nakahara

2009

ANAL. SCI.

Self Cite

View full text Add to dashboard Cite

Photochromic crown compounds, such as monomeric and polymeric crown compounds incorporating spirobenzopyran, spironaphthooxazine, spirobenzothiapyran, Malachite Green, and Crystal Violet moieties, were synthesized for applications in the fields of analytical and separation chemistry. The photochromic crown compounds, especially crowned spirobenzopyran derivatives, were applied to metal ion extraction, extraction spectrophotometry, membrane transport, and ion chromatography, the sensitivity and selectivity of which were controlled and enhanced photochemically. Also, micelles and vesicles containing lipophilic crowned spirobenzopyrans and Malachite Greens were tested for their usefulness in spectrophotometric and fluorometric metal-ion determination and photocontrol of organic substance in aqueous systems. The polymeric crowned spirobenzopyrans were tried to use as a photochemical valve based on photochemical rheology changes. Moreover, attempts were made to directly observe photoinduced aggregation of the spirobenzopyran moiety and photoresponsive rheology changes of the polymeric crowned spirobenzopyran, by using chemical force microscopy.

show abstract

“…Recently, spiropyrans and spirooxazines of the indoline series 81a-e, 82, and 83a,b containing various crown ether receptors were synthesized [111][112][113][114][115][116][117][118]. The crown-containing styryl dyes 87-90, which form molecular dimers in the presence of metal ions, were described in the cycle of papers [122][123][124][125][126][127][128].…”

Section: Photoswitchable Chemosensorsmentioning

confidence: 99%

Organic chemosensors with crown-ether groups (review)

Цуканов

Дубоносов

Breń

et al. 2008

Chem Heterocycl Comp

View full text Add to dashboard Cite

Recent advances in the chemistry of organic chemosensors containing crown-ether groups are reviewed.Organic chemosensors are molecules of abiotic nature capable of interacting selectively and irreversibly with a specific substrate (ion, molecule) with corresponding changes in one or more characteristics of the system. A series of reviews have described methods for the synthesis of chemosensors [1] and their use in the determination of metal cations [2-8], anions, and molecules [4, 9, 10]. Some of them treat the various types of fluorescent chemosensors [5][6][7][8] or photoswitching compounds [11][12][13][14] selectively. In this review, based exclusively on the results of recent years, sensors containing crown-ether groups are examined. Special attention is paid to the various mechanisms of action of crown-containing chemosensors, which are classified according to their electronic and photochemical characteristics.In the general case a chemosensor molecule consists of signal and receptor parts with a bridge between them although the latter may be absent. As a rule chemosensors can be subdivided into chromogenic, fluorescent, and photoswitchable.During the interaction of a chromogenic sensor with the substrate (in particular with a metal ion) a hypsochromic or bathochromic shift of the long-wave absorption band of the initial compound is observed. If the shift of the bands is significant and takes place in the visible part of the spectrum it leads to a visually discernable change in the color of the solution. Such signal systems are usually called colorimetric or "naked-eye" chemosensors.The action of fluorescent chemosensors is based both on change of the fluorescence intensity and on shift of the emission band of the initial compounds during the formation of a complex with the substrate.Photoswitchable chemosensors are capable of reversible "switching on-switching off" of their sensor characteristics under the influence of light.Among ionophore-receptors capable of combining with positively charged ions, it is possible to include chelating agents, podands, coronands (or crown ethers), cryptands, calixarenes, cyclodextrins, etc. [15].Crown ethers, discovered by Pedersen in 1962, occupy a special position among receptors and are widely used in the design of new chemosensors based on their unique ability to combine with the cations of alkali metals, their fairly high selectivity, and their accessibility. In addition to alkali metals, crown ethers are also effective complexing reagents for the cations of alkaline-earth metal, Pb 2+ , and Tl 2+ , and when nitrogen and sulfur atoms are inserted into their structure they become sensitive to Ag + , Hg 2+ , and Cd 2+ ions. The __________________________________________________________________________________________

show abstract

Cation Complexation, Photochromism, and Photoresponsive Ion-Conducting Behavior of Crowned Spirobenzopyran Vinyl Polymers

Cited by 30 publications

References 22 publications

Crown Ether Based Optical Molecular Sensors and Photocontrolled Ionophores

Crown Ether Based Optical Molecular Sensors and Photocontrolled Ionophores

Analytical and Separation Chemistry by Taking Advantage of Organic Photochromism Combined with Macrocyclic Chemistry

Organic chemosensors with crown-ether groups (review)

Contact Info

Product

Resources

About