Cationic recognition by tert-butylcalix[4]arene-functionalized nanoprobes

Yan, Hong; Luo, Jin; Xie, Hongming; Xie, Dexun; Su, Qiong; Yin, Jun; Wanjala, Bridgid N.; Diao, Han; An, Delie; Zhong, Chuan‐Jian

doi:10.1039/c0cp02658a

Cited by 19 publications

(6 citation statements)

References 30 publications

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“…An and Zhong et al described a AuNPs-based strategy for cationic detection using structurally-tailored 11. 41 Compound 11 shows a cone-conformation based on 1 H NMR patterns arising from the ArCH 2 Ar methylene protons. Upon the addition of K + , Ba 2+ and Pb 2+ to the solution of Au@11, the surface plasmon band evidenced reduced absorbance at 533 nm with an increase at 620 nm.…”

Section: Cation Sensorsmentioning

confidence: 99%

Host–guest sensing by calixarenes on the surfaces

et al. 2012

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The present critical review reports on recent developments of optical nanoparticles based on the association of gold, silver, silica and quantum dots and calixarenes. These hybrid organic-inorganic compounds characterized by a thick organic layer self-assembled on the surface of a core of mineral surface atoms take advantage of the supramolecular recognition of luminescent calixarenes to fabricate nanodevices of nanoparticle size, capable of detecting metal cations, polyaromatic hydrocarbons and pesticides. Also presented is an explanation of the involvement of such nanoparticles in biochemical systems. This critical review provides an overview of their preparation, the manner in which they are characterized, and their use (108 references).

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Section: Cation Sensorsmentioning

confidence: 99%

Host–guest sensing by calixarenes on the surfaces

et al. 2012

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“…Other studies have focused on the recognition of cations. Yan et al [139] have developed 6 nm sized gold nanoparticles capped with methylthio-para-tert-butylcalixarene derivatives 11, 12 and 13 ( Figure 25). They used the cationic recognition of structurally-tailored paratert-butylcalixarenes to control access of the cationic guest to the cone cavity.…”

Section: Calix[n]arenesmentioning

confidence: 99%

Molecular recognition by gold, silver and copper nanoparticles

Tauran¹,

Brioude²,

Coleman³

et al. 2013

WJBC

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The intrinsic physical properties of the noble metal nanoparticles, which are highly sensitive to the nature of their local molecular environment, make such systems ideal for the detection of molecular recognition events. The current review describes the state of the art concerning molecular recognition of Noble metal nanoparticles. In the first part the preparation of such nanoparticles is discussed along with methods of capping and stabilization. A brief discussion of the three common methods of functionalization: Electrostatic adsorption; Chemisorption; Affinity-based coordination is given. In the second section a discussion of the optical and electrical properties of nanoparticles is given to aid the reader in understanding the use of such properties in molecular recognition. In the main section the various types of capping agents for molecular recognition; nucleic acid coatings, protein coatings and molecules from the family of supramolecular chemistry are described along with their numerous applications. Emphasis for the nucleic acids is on complementary oligonucleotide and aptamer recognition. For the proteins the recognition properties of antibodies form the core of the section. With respect to the supramolecular systems the cyclodextrins, calix[n]arenes, dendrimers, crown ethers and the cucurbitales are treated in depth. Finally a short section deals with the possible toxicity of the nanoparticles, a concern in public health.

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“…46,47 The UV-Vis spectra of 5 exhibited absorption band at 523 nm, which is attributed to the surface plasmon resonance (SPR) band of the functionalized gold nanoparticles. 17,[22][23][24][25][26][27][28][29]47 The TEM image of 5 exhibits discrete particles and no aggregation is noted, the average size of the particles determined by TEM is 2-5 nm. The EDX analysis of 5 confirmed the presence of gold (18.26 atomic%) in this material.…”

Section: Resultsmentioning

confidence: 99%

“…[13][14][15][16] Therefore, detection of both of these metal ions is important and significant progress has been made in this direction by designing molecular sensors based on fluorescence, surface plasmon resonance, colorimetry and voltametry. [17][18][19][20][21] Among these various detection techniques, colorimetric method is less studied, which in fact allow onsite naked-eye detection and do not require any specialized analytical instrument. With recent development in nanotechnology, the * For correspondence metal nanoparticles are emerging as important colorimetric receptor for the designing of colorimetric sensors.…”

Section: Introductionmentioning

confidence: 99%

Colorimetric detection of Cu2+ and Pb2+ ions using calix[4]arene functionalized gold nanoparticles

et al. 2014

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Calixarene functionalized gold nanoparticles (CFAuNPs) have been prepared and characterized by spectroscopic and microscopic (TEM) techniques. To use this material as potential colorimetric sensor, the binding property of this new material has been investigated with a large number of metal ions. It exhibited sharp colour change from dark brown to green and blue, detectable by naked-eye, in the presence of Cu 2+ and Pb 2+ ions, respectively. It has also triggered substantial change in surface plasmon resonance (SPR) band of the functionalized gold nanoparticles, which in case of Pb(II) is due to the inter particle plasmon coupling arising from the metal-induced aggregation of the nanoparticles and for Cu(II), it is because of the formation of AuCu alloy due to anti-galvanic exchange. The size and aggregation of the nanoparticles are confirmed from HRTEM images, elemental analysis and the line profiling for both the metal ions have been done by STEM-EDX analysis.

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Cationic recognition by tert-butylcalix[4]arene-functionalized nanoprobes

Cited by 19 publications

References 30 publications

Host–guest sensing by calixarenes on the surfaces

Host–guest sensing by calixarenes on the surfaces

Molecular recognition by gold, silver and copper nanoparticles

Colorimetric detection of Cu2+ and Pb2+ ions using calix[4]arene functionalized gold nanoparticles

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