Sensing Performances of Oligosilane Functionalized Fluorescent Film to Nitrobenzene in Aqueous Solution

Zhang, Yuan; He, Gang; Liu, Taihong; Yang, Meini; Ding, Liping; Fang, Yu

doi:10.1166/sl.2009.1251

Cited by 9 publications

(4 citation statements)

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“…Therefore, the development of sensitive and selective NB sensors is of importance. This is why there have been so many papers published during the last few years that are relevant to the determination of NB in both the gaseous phase and solution state. , Considering the electron-rich property and the conjugated structure of the fluorophore, CholG-3T-Py, employed in the development of the present fluorescent films, the fluorescence-quenching effect of NB on the emission of the films tested was examined. The test was conducted in the way as described below.…”

Section: Experimental Sectionmentioning

confidence: 99%

Fluorescent Films Based on Molecular-Gel Networks and Their Sensing Performances

Liu

Chen

et al. 2013

ACS Appl. Mater. Interfaces

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A pyrene-capped terthiophene of cholesteryl derivative (CholG-3T-Py) was designed, synthesized, and utilized for the fabrication of a fluorescent film. Unlike the commonly adopted direct-coating method, the film was fabricated by the physical immobilization of the fluorophore, CholG-3T-Py, onto a glass plate surface via preformed low-molecular-mass gelator (LMMGs)-based molecular-gel networks. The photophysical behavior of the film as prepared and its sensing performances to nitrobenzene (NB) were conducted after activation with toluene. It was found that the film as prepared and activated is sensitive to the presence of NB, and the sensing process is fully reversible. Furthermore, the effects of commonly found interferents, including structural analogues, raw materials, which are commonly used for the production of NB, and other nitroaromatics (NACs), on the sensing process were also tested. It was shown that only aniline and phenol possess slight interference. The present work not only extends the applications of LMMGs-based molecular gels but also provids a new approach for preparation of micro- and nano-structure-based fluorescent sensing films.

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Section: Experimental Sectionmentioning

confidence: 99%

Fluorescent Films Based on Molecular-Gel Networks and Their Sensing Performances

Liu

Chen

et al. 2013

ACS Appl. Mater. Interfaces

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“…This film was also tested in aqueous solution to detect NACs. 62 Similar to the case of SAMs of PAHs, the ''spacer layer'' was also formed in conjugated oligomer-functionalized SAM film when it was used in aqueous solution. As a result, this identical film exhibited a higher superquenching efficiency to NB (detection limit: 1.5 Â 10 À10 M) than to TNT in aqueous solution, which imparts the film with versatile selectivity based on the testing environment.…”

Section: Fluorescent Film Sensors Based On Sams Of Conjugated Oligome...mentioning

confidence: 91%

Chemically assembled monolayers of fluorophores as chemical sensing materials

2010

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The development of fluorescent chemical sensors has been an active research topic for many research fields. Design strategies play an important role in the sensing performance of the desired sensors. The use of chemically assembled monolayers of fluorophores to fabricate film sensors has shown several advantages: highly stable, re-useable, non-consumptive, and easy to be made into devices, etc. The present tutorial review gives an overview of the fluorescent film sensors based on chemical monolayer assemblies of fluorophores that have been developed in our laboratory along with some representative publications of others over the past decade. Different sensing mechanisms were taken into account in the sensor designs, including hydrogen-bond formation, static complex with quenchers, and more interestingly, the "spacer layer screening effect". Various neutral organic chemicals and anions were targeted by these film sensors with great selectivity and sensitivity. In particular, the specific "spacer layer screening effect" imparts these particular type of films with tuned selectivity, opening a novel direction in developing fluorescent film sensors.

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“…Additionally, the fluorescence technique helps to obtain sufficient output signal due to its high sensitivity. A sensor array consisting of five kinds of fluorescent sensing films, which had been developed by our group, [20][21][22][23][24][25][26][27] enables us to detect different metal ions and nitroaromatic compounds in aqueous medium with different quenching efficiencies. The fabrication, characterization, and sensing performances of the sensing films had been systematically studied and described previously in the references cited.…”

Section: Fluorescent Film Sensormentioning

confidence: 99%

“…19 By combining the advantages of the mono-molecular layer chemistry method and those of the CPs, a series of novel fluorescent sensing films have been created over the past few years which form the basis of the present device. [20][21][22][23][24][25][26][27] As it is well known, classification of nitroaromatic explosives in real-life detection is almost impossible by using a single sensor, and thereby sensor arrays were proposed recently for the discrimination of them. 28 These arrays have been known as electronic tongues 29 or electronic noses 30 according to their application in aqueous or gaseous media.…”

Section: Introductionmentioning

confidence: 99%

A portable and autonomous multichannel fluorescence detector for on-line and in situ explosive detection in aqueous phase

Xin¹,

Wang²,

Liu³

et al. 2012

Lab Chip

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Sensing Performances of Oligosilane Functionalized Fluorescent Film to Nitrobenzene in Aqueous Solution

Cited by 9 publications

References 0 publications

Fluorescent Films Based on Molecular-Gel Networks and Their Sensing Performances

Fluorescent Films Based on Molecular-Gel Networks and Their Sensing Performances

Chemically assembled monolayers of fluorophores as chemical sensing materials

A portable and autonomous multichannel fluorescence detector for on-line and in situ explosive detection in aqueous phase

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