Efficient Quenching of a Guanidinium-Containing Fluorescence Sensor

George, Wayne N.; Giles, Melanie; McCulloch, Iain; Steinke, Joachim H. G.; deMello, John C.

doi:10.1002/cphc.201000943

Cited by 7 publications

(6 citation statements)

References 31 publications

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“…Those changes caused by the presence of individual charged molecules may reveal a unique response in the photophysical properties of the conjugated chromophore. The resulting fluorescence quenching or enhanced emission can indicate presence of ions [70], oxygen [71], surfactants [70,72,75,79,92], detergents [76,79], MV 2+ ions [68], solvent polarity [80], anionic biopolymer carboxymethylcellulose [77,78], biomolecules [93], and bacteria [69]. The oligomers were used for processes monitoring of e.g., amyloid formation [61,73], enzymatic activity [74], and photochemical reaction processes [71].…”

Section: Oligo(arylene Ethynylene) Electrolytesmentioning

confidence: 99%

“…[71], surfactants [70,72,75,79,92], detergents [76,79], MV 2+ ions [68], solvent polarity [80], anionic biopolymer carboxymethylcellulose [77,78], biomolecules [93], and bacteria [69]. The oligomers were used for processes monitoring of e.g., amyloid formation [61,73], enzymatic activity [74], and photochemical reaction processes [71].…”

Section: Oligo(arylene Ethynylene) Electrolytesmentioning

confidence: 99%

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Well-Defined Conjugated Macromolecules Based on Oligo(Arylene Ethynylene)s in Sensing

Krywko‐Cendrowska

Szweda

2020

Processes

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Macromolecules with well-defined structures in terms of molar mass and monomer sequence became interesting building blocks for modern materials. The precision of the macromolecular structure makes fine-tuning of the properties of resulting materials possible. Conjugated macromolecules exhibit excellent optoelectronic properties that make them exceptional candidates for sensor construction. The importance of chain length and monomer sequence is particularly important in conjugated systems. The oligomer length, monomer sequence, and structural modification often influence the energy bang gap between the highest occupied molecular orbital (HOMO) and the lowest unoccupied molecular orbital (LUMO) of the molecules that reflect in their properties. Moreover, the supramolecular aggregation that is often observed in oligo-conjugated systems is usually strongly affected by even minor structural changes that are used for sensor designs. This review discusses the examples of well-defined conjugated macromolecules based on oligo(arylene ethynylene) skeleton used for sensor applications. Here, exclusively examples of uniform macromolecules are summarized. The sensing mechanisms and importance of uniformity of structure are deliberated.

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Section: Oligo(arylene Ethynylene) Electrolytesmentioning

confidence: 99%

Section: Oligo(arylene Ethynylene) Electrolytesmentioning

confidence: 99%

Well-Defined Conjugated Macromolecules Based on Oligo(Arylene Ethynylene)s in Sensing

Krywko‐Cendrowska

Szweda

2020

Processes

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“…Those changes caused by the presence of individual charged molecules may reveal a unique response in the photophysical properties of the conjugated chromophore. The resulting fluorescence quenching or enhanced emission can indicate presence of ions [68], oxygen [69], surfactants [68,70,73,77,90], detergents [74,77], MV 2+ ions [66], solvent polarity [78], anionic biopolymer carboxymethylcellulose [75,76], biomolecules [91] and bacteria [67]. The oligomers were used for processes monitoring of e.g.…”

Section: Oligo(arylene Ethynylene) Electrolytesmentioning

confidence: 99%

Well-defined Conjugated Macromolecules in Sensing

Krywko‐Cendrowska¹,

Szweda²,

Szweda³

2020

Preprint

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Macromolecules with well-defined structures in terms of molar mass and monomer sequence became interesting building blocks for modern materials. The precision of the macromolecular structure makes fine-tuning of the properties of resulting materials possible. Conjugated macromolecules exhibit excellent optoelectronic properties that make them exceptional candidates for sensors construction. The importance of chain length and monomer sequence is particularly important in conjugated systems. The sequence lengths, monomer sequence and structural modification often influence the energy bang gap between HOMO and LUMO orbitals of the molecules that reflect in their properties. Moreover, the supramolecular aggregation that is often observed in oligo-conjugated systems is usually strongly affected by even minor structural changes that are used for sensor designs. This review summarizes the examples of well-defined conjugated macromolecules based on oligo(arylene ethynylene)s skeleton used for sensor applications. The sensing mechanisms and importance of uniformity of structure are discussed.

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“…Bringing the anion closer to the fluorophore, as in guanidinium probe 7a , can also increase the quenching effect (Figure 7). [60] The increased proximity produced a four-fold increase in response compared to a similar ammonium probe ( 7b ).…”

Section: Charged Speciesmentioning

confidence: 99%

Ion and Molecular Recognition Using Aryl–Ethynyl Scaffolding

Vonnegut

Tresca

Johnson

et al. 2015

Chemistry An Asian Journal

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The aryl–ethynyl linkage has been extensively employed in the construction of hosts for a variety of guests. Uses range from ion detection (e.g., of metal cations in the environment or industrial waste and of anions prevalent in nature), to molecular mimics for biological systems, and to applications targeting future safety issues (such as CO2 capture and indicators for the manufacture of chemical weapons). This Focus Review examines the utilization of the aryl–ethynyl linkage in engineering host molecules for a variety of different guests, and how the alkyne unit plays an integral part as both a rigid scaffolding section in host geometry design as well as a linker to allow conjugative communication between discrete π-electron systems.

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Efficient Quenching of a Guanidinium-Containing Fluorescence Sensor

Cited by 7 publications

References 31 publications

Well-Defined Conjugated Macromolecules Based on Oligo(Arylene Ethynylene)s in Sensing

Well-Defined Conjugated Macromolecules Based on Oligo(Arylene Ethynylene)s in Sensing

Well-defined Conjugated Macromolecules in Sensing

Ion and Molecular Recognition Using Aryl–Ethynyl Scaffolding

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