Volatile alcoholic compounds fibre optic nanosensor

Elosúa, César; Bariain, Cándido; Matı́as, Ignacio R.; Arregui, Francisco J.; Luquín, Asunción; Laguna, Mariano

doi:10.1016/j.snb.2005.10.014

Cited by 69 publications

(29 citation statements)

References 25 publications

(22 reference statements)

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“…These VOCs have encouraged many researchers to develop chemical sensors (chemosensors) optically with high sensing capabilities in sensitivity, selectivity and reusability as well as low-cost precursors [3][4]. By using organic chromophores as a chemosensor, the detection of the vapors with organic chromophores (vapochromics) as chemosensors have been studied to evaluate the changes in luminescence (color, emission intensity and lifetime) [5], absorption (transmittance) [6], thermal resistivity [7], refractive index [8], swelling [9], mass [9], permittivity [10] and etc.…”

Section: Introductionmentioning

confidence: 99%

“…Since phosphorescent compounds are indicated by its longer luminescent lifetime from the metal-metal interactions than the fluorescence, many complexes from d 6 , d 8 and d 10 metal ions with extended π-system or coordination donors have been synthesized as phosphorescent metal complexes. The resulting metal complexes have revealed color changes from vapor-triggered luminescence owing to metal-solvent, metal-metal, π-π, hydrogen bonding and host-guest interactions [12].…”

Section: Introductionmentioning

confidence: 99%

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Supramolecular Phosphorescent Trinuclear Copper(I) Pyrazolate Complexes for Vapochromic Chemosensors of Ethanol

2017

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We highlight that by using supramolecular single crystals of phosphorescent trinuclear copper(I) pyrazolate complexes with different molecular structures (2 A-E ), vapochromic chemosensors were successfully designed for sensing ethanol with high sensing capability. These complexes 2 A-E were synthesized from non-side chain, 3,5-dimethyl, 3,5-bis(trifluoromethyl), 3,5-diphenyl and 4-(3,5-dimethoxybenzyl)-3,5-dimethyl samping, 3,5-dimetil, 3,5-bis(trifluorometil), 3,5-difenil dan 4-(3,5-dimetoksibensil)-3,5-dimetil dengan hasil 83, 97, 99, 88 ABSTRAK Kami menyoroti bahwa dengan menggunakan kristal tunggal supramolekul dari kompleks tembaga(I) pirazolat tiganuklir pendarfosfor dengan perbedaan struktur molekul, vapokromik kemosensor telah dengan berhasil dirancang untuk mendeteksi etanol dengan kemampuan deteksi tinggi. Kompleks 2 A-E ini masing-masing telah disintesis dari ligan pirazol (1 A-E ) tidak berantai

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Supramolecular Phosphorescent Trinuclear Copper(I) Pyrazolate Complexes for Vapochromic Chemosensors of Ethanol

2017

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“…Recent studies have proven that substitution reactions between the ligand at the Ag atoms and the VOCs are responsible for the observed behaviour, and that the emission is localized in the tetranuclear Au I /Ag I cores [96]. This type of Au I /Ag I polymers can be incorporated into fibre optics for optical measurements [97][98][99][100][101][102]. The coordination polymers {Cu[Au(CN) 2 ](solvent) 2 } n , which can be obtained in two polymorphic forms depending on the solvent, exhibit visible colour changes on exposure to various volatiles, including water, MeCN, DMF, dioxane, pyridine and NH 3 .…”

Section: Detection Of Gases and Volatile Organic Compoundsmentioning

confidence: 99%

Chromo- and Fluorogenic Organometallic Sensors

Fletcher

Lagunas

2009

Topics in Organometallic Chemistry

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Compounds that change their absorption and/or emission properties in the presence of a target ion or molecule have been studied for many years as the basis for optical sensing. Within this group of compounds, a variety of organometallic complexes have been proposed for the detection of a wide range of analytes such as cations (including H + ), anions, gases (e.g. O 2 , SO 2 , organic vapours), small organic molecules, and large biomolecules (e.g. proteins, DNA). This chapter focuses on work reported within the last few years in the area of organometallic sensors. Some of the most extensively studied systems incorporate metal moieties with intense long-lived metal-to-ligand charge transfer (MLCT) excited states as the reporter or indicator unit, such as fac-tricarbonyl Re(I) complexes, cyclometallated Ir(III) species, and diimine Ru(II) or Os(II) derivatives. Other commonly used organometallic sensors are based on Pt-alkynyls and ferrocene fragments. To these reporters, an appropriate recognition or analyte-binding unit is usually attached so that a detectable modification on the colour and/or the emission of the complex occurs upon binding of the analyte. Examples of recognition sites include macrocycles for the binding of cations, H-bonding units selective to specific anions, and DNA intercalating fragments. A different approach is used for the detection of some gases or vapours, where the sensor's response is associated with changes in the crystal packing of the complex on absorption of the gas, or to direct coordination of the analyte to the metal centre.

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“…Prominent citations on applications of LPFG-based biosensors include: antibody-antigen detection, 7 chemical sensing, 8 pH sensing, 9 glucose detection, 10 DNA, 11,12 bacterial detection, and other medical diagnostic applications. 13,14 Functionalizing the LPFG surface with molecular recognition elements such as enzymes, nucleic acids (DNA), antibodies, and antigens involves several bioreceptor immobilization methods which include covalent bonding, 15,16 ionic bonding, 17,18 absorption, 19 avidinbiotin interaction, and cross-linking through a multifunctional reagent. 20,21 While covalent bonding has been considered most effective of all the methods because it allows the active sites to remain chemically reactive and unobstructed, enzymes have also been considered usefully utilized as molecular recognition elements.…”

Section: Introductionmentioning

confidence: 99%

Enzyme-functionalized thin-cladding long-period fiber grating in transition mode at dispersion turning point for sugar-level and glucose detection

Badmos

Sun

et al. 2017

J. Biomed. Opt

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, "Enzyme-functionalized thin-cladding long-period fiber grating in transition mode at dispersion turning point for sugar-level and glucose detection," J. Biomed. Opt. Abstract. Enzyme-functionalized dual-peak long-period fiber grating (LPFG) inscribed in 80-μm-cladding B/Ge codoped single-mode fiber is presented for sugar-level and specific glucose detection. Before enzyme functionalization, the dual-peak LPFG was employed for refractive index sensing and sugar-level detection and high sensitivities of ∼4298.20 nm∕RIU and 4.6696 nm∕% were obtained, respectively. Glucose detection probe was attained by surface functionalization of the dual-peak LPFG via covalent binding with aminopropyl triethoxysilane used as a binding site. Optical micrographs confirmed the presence of enzyme. The surface-functionalized dual-peak LPFG was tested with D-(+)-glucose solution of different concentrations. While the peak 2 at the longer wavelength was suitable only to measure lower glucose concentration (0.1 to 1.6 mg∕ml) recording a high sensitivity of 12.21 AE 0.19 nm∕ðmg∕mlÞ, the peak 1 at the shorter wavelength was able to measure a wider range of glucose concentrations (0.1 to 3.2 mg∕ml) exhibiting a maximum resonance wavelength shift of 7.12 AE 0.12 nm∕mg∕ml. The enzyme-functionalized dual-peak LPFG has the advantage of direct inscription of highly sensitive grating structures in thin-cladding fibre without etching, and most significantly, its sensitivity improvement of approximately one order of magnitude higher than previously reported LPFG and excessively tilted fibre grating (Ex-TFG) for glucose detection.

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Volatile alcoholic compounds fibre optic nanosensor

Cited by 69 publications

References 25 publications

Supramolecular Phosphorescent Trinuclear Copper(I) Pyrazolate Complexes for Vapochromic Chemosensors of Ethanol

Supramolecular Phosphorescent Trinuclear Copper(I) Pyrazolate Complexes for Vapochromic Chemosensors of Ethanol

Chromo- and Fluorogenic Organometallic Sensors

Enzyme-functionalized thin-cladding long-period fiber grating in transition mode at dispersion turning point for sugar-level and glucose detection

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