Silsesquioxane cages as fluoride sensors

Supphachok Chanmungkalakul; Vuthichai Ervithayasuporn; Sasikarn Hanprasit; Manlika Masik; Nicha Prigyai; Suda Kiatkamjornwong

doi:10.1039/c7cc06647c

Silsesquioxane cages as fluoride sensors

Supphachok Chanmungkalakul
, Vuthichai Ervithayasuporn
, Sasikarn Hanprasit
, Manlika Masik
, Nicha Prigyai
, Suda Kiatkamjornwong

Mahidol University
Chulalongkorn University
Royal Society of Thailand

Research output: Contribution to journal › Article › peer-review

73 Citations (Scopus)

Abstract

Pyrene functionalized silsesquioxane cages (PySQ) not only provide significant fluorescence from pyrene-pyrene excimers with a very large Stokes shift (Δλ = 143 nm, 69 930 cm^-1) in DMSO but also exhibit fluoride capture results coincidentally with a π-π∗ fluorescence enhancement. On the other hand, PySQ-F^- in THF significantly exhibits π-π∗ fluorescence quenching and a color change can be observed with the naked eye from light yellow to deep orange by forming a charge-transfer (CT) complex among the pyrenyl rings. Moreover, PySQ selectively captures F^- with a response time of <2 min and with a very low detection limit (1.61 ppb), while ¹⁹F NMR is used to confirm encapsulation of F^- with Δδ = 19 ppm.

Original language	English
Pages (from-to)	12108-12111
Number of pages	4
Journal	Chemical Communications
Volume	53
Issue number	89
DOIs	https://doi.org/10.1039/c7cc06647c
Publication status	Published - 2017
Externally published	Yes

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title = "Silsesquioxane cages as fluoride sensors",

abstract = "Pyrene functionalized silsesquioxane cages (PySQ) not only provide significant fluorescence from pyrene-pyrene excimers with a very large Stokes shift (Δλ = 143 nm, 69 930 cm-1) in DMSO but also exhibit fluoride capture results coincidentally with a π-π∗ fluorescence enhancement. On the other hand, PySQ-F- in THF significantly exhibits π-π∗ fluorescence quenching and a color change can be observed with the naked eye from light yellow to deep orange by forming a charge-transfer (CT) complex among the pyrenyl rings. Moreover, PySQ selectively captures F- with a response time of <2 min and with a very low detection limit (1.61 ppb), while 19F NMR is used to confirm encapsulation of F- with Δδ = 19 ppm.",

author = "Supphachok Chanmungkalakul and Vuthichai Ervithayasuporn and Sasikarn Hanprasit and Manlika Masik and Nicha Prigyai and Suda Kiatkamjornwong",

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doi = "10.1039/c7cc06647c",

language = "English",

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TY - JOUR

T1 - Silsesquioxane cages as fluoride sensors

AU - Chanmungkalakul, Supphachok

AU - Ervithayasuporn, Vuthichai

AU - Hanprasit, Sasikarn

AU - Masik, Manlika

AU - Prigyai, Nicha

AU - Kiatkamjornwong, Suda

PY - 2017

Y1 - 2017

N2 - Pyrene functionalized silsesquioxane cages (PySQ) not only provide significant fluorescence from pyrene-pyrene excimers with a very large Stokes shift (Δλ = 143 nm, 69 930 cm-1) in DMSO but also exhibit fluoride capture results coincidentally with a π-π∗ fluorescence enhancement. On the other hand, PySQ-F- in THF significantly exhibits π-π∗ fluorescence quenching and a color change can be observed with the naked eye from light yellow to deep orange by forming a charge-transfer (CT) complex among the pyrenyl rings. Moreover, PySQ selectively captures F- with a response time of <2 min and with a very low detection limit (1.61 ppb), while 19F NMR is used to confirm encapsulation of F- with Δδ = 19 ppm.

AB - Pyrene functionalized silsesquioxane cages (PySQ) not only provide significant fluorescence from pyrene-pyrene excimers with a very large Stokes shift (Δλ = 143 nm, 69 930 cm-1) in DMSO but also exhibit fluoride capture results coincidentally with a π-π∗ fluorescence enhancement. On the other hand, PySQ-F- in THF significantly exhibits π-π∗ fluorescence quenching and a color change can be observed with the naked eye from light yellow to deep orange by forming a charge-transfer (CT) complex among the pyrenyl rings. Moreover, PySQ selectively captures F- with a response time of <2 min and with a very low detection limit (1.61 ppb), while 19F NMR is used to confirm encapsulation of F- with Δδ = 19 ppm.

UR - https://www.scopus.com/pages/publications/85033229177

U2 - 10.1039/c7cc06647c

DO - 10.1039/c7cc06647c

M3 - Article

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SN - 1359-7345

VL - 53

SP - 12108

EP - 12111

JO - Chemical Communications

JF - Chemical Communications

IS - 89

ER -

Silsesquioxane cages as fluoride sensors

Abstract

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