Chemosensor fluorescing

McFarland SA, Finney NS (2001) Fluorescent chemosensors based on conformational restriction of a biaryl fluorophore. J Am Chem Soc 123 1260-1261... [Pg.22]

Bahr N, Tierney E, Reymond JL (1997) Highly Photoresistant chemosensors using acridone as fluorescent label. Tetrahedron Lett 38 1489-1492... [Pg.58]

Chang KC, Su I, Senthilvelan A, Chung W (2007) Triazole-modified calix[4]crown as a novel fluorescent on—off switchable chemosensor. Org Lett 9 3363-3366... [Pg.59]

An r/rr/mnv -squaraine-based chemosensor 23a absorbing at 635 nm (eM = 260,000 M 1cm 1) and emitting at 665 nm signals alkaline and earth-alkaline metal ions in millimolar concentrations in acetonitrile [81]. In presence of Na+ ions, the fluorescence signal weakly increases while it significantly decreases in presence of Ca2+, Mg2+, and Ba2+ and does not change substantially upon addition of K+ ions. The same squaraine 23a and the azacrown-squaraine 23b [82] were used for Na+ and K+ sensing in a plasticized PVC matrix [83]. The squaraine derivatives exhibited fluorescence emission based optical responses to... [Pg.81]

A Ca2+-specific fluorescent chemosensor 25 in aqueous buffer signals Ca2+ via a decrease in fluorescence intensity, whereas excess of Mg2+ ions has no effect on the emission [85]. This probe has limited solubility in aqueous solution after binding to Ca2+. A Zn2+ sensitive probe 26 showing different fluorescence responses depending on the complexation stoichiometry is described in [86],... [Pg.82]

The dihydroxyaniline-squaraine chromophore was used by Akkaya and Isgor in the fluorescent chemosensor 30 for the measurement of pH [90]. This chemosensor, having the molar absorptivity about 200,000 M em 1 and quantum yield 0.2,... [Pg.83]

Oguz U, Akkaya EU (1997) One-pot synthesis of a red-fluorescent chemosensor from an azacrown, phloroglucinol and squaric acid a simple in-solution construction of a functional molecular device. Tetrahedron Lett 38 4509 1512... [Pg.102]

Oguz U, Akkaya EU (1998) A squaraine-based sodium selective fluorescent chemosensor. Tetrahedron Lett 39 5857-5860... [Pg.102]

Akkaya EU, Turkyilmaz S (1997) A squaraine-based near IR fluorescent chemosensor for calcium. Tetrahedron Lett 38 4513—4516... [Pg.103]

Isgor YG, Akkaya EU (1997) Chemosensing in deep red a squaraine-based fluorescent chemosensor for pH. Tetrahedron Lett 38 7417-7420... [Pg.103]

Wang S, Chang YT (2006) Combinatorial synthesis of benzimidazolium dyes and its diversity directed application toward GTP-selective fluorescent chemosensors. J Am Chem Soc 128 10380-10381... [Pg.186]

A method has been proposed for evaluation of LIP concentration in living cells based on the fluorescent probe calcein (Breuer etai, 1995 Epsztejn etai, 1997). The authors assumed that calcein bound Fe2+. However, a more recent thermodynamic and kinetic study indicates that the preferred form bound is Fe3+, and that calcein is a good chemosensor of Fe3+ (Thomas, etai., 1999). The iron... [Pg.205]

Tsien, R. Y. Fluorescent and photochemical probes of dynamic biochemical signals inside living cells. In Fluorescent Chemosensors for Ion and Molecule Recognition. ACS symposium series 538, 1993. [Pg.941]

Szmacinski, H. Lacowicz, J. R. Lifetime-based Sensing Using Phase-Modulation Fluorometry. In Fluorescent Chemosensor for Ion and Molecule Recognition. ACS Symposium Series 538, 1993. [Pg.942]

Several pyridyl-substituted indolizines are fluorescent and their photophysics have been studied <1999MI155, 2002MI279>. This property has found application in the synthesis of indolizine-substituted /3-cyclodextrins <2005T3939> used as fluorescent chemosensors for organic guest molecules <2005CAR1706, 2005JFC385>. [Pg.369]

Three new fluorescent indolizine modified /3-cyclodextrins have been investigated as molecular chemosensors for the detection of volatile organic compdounds <2007MI312>. [Pg.399]

J.-S. Yang and T.M. Swager, Fluorescent porous polymer films as TNT chemosensors electronic and structural effects, J. Am. Chem. Soc., 120 11864-11873, 1998. [Pg.289]

Fig. 32 Effect of analyte coordination in (a) a traditional molecular chemosensor system, (b) receptors wired in series in a conjugated polymer, (c) chemosensors grafted onto the surface of a nanoparticle, and (d) a fluorescent dendrimer. The curved arrows indicate the active...

Parkesh R, Lee TC, Gunnlaugsson T (2007) Highly selective 4-amino-1,8-naphthalimide based fluorescent photoinduced electron transfer (PET) chemosensors for Zn(II) under physiological pH conditions. Org Biomol Chem 5 310-317... [Pg.99]

Chang CJ, Nolan EM, Jaworski J et al (2004) Bright fluorescent chemosensor platforms for imaging endogenous pools of neuronal zinc. Chem Biol 11 203-210... [Pg.99]

Vance DH, Czamik AW (1994) Real-time assay of inorganic pyrophosphatase using a high-affinity chelation-enhanced fluorescence chemosensor. J Am Chem Soc 116 9397-9398... [Pg.99]

Bodenant B, Weil T, Businelli-Pourcel M et al (1999) Synthesis and solution structure analysis of a bispyrenyl bishydroxamate calix[4]arene-based receptor, a fluorescent chemosensor for Cu2+ and Ni2+ metal ions. J Org Chem 64 7034-7039... [Pg.100]

Lee HN, Xu Z, Kim SK et al (2007) Pyrophosphate-selective fluorescent chemosensor at physiological pH formation of a unique excimer upon addition of pyrophosphate. J Am Chem Soc 129 3828-3829... [Pg.100]

Mello JV, Finney NS (2005) Reversing the discovery paradigm a new approach to the combinatorial discovery of fluorescent chemosensors. J Am Chem Soc 127 10124-10125... [Pg.100]

Choi K, Hamilton AD (2001) A dual channel fluorescence chemosensor for anions involving intermolecular excited state proton transfer. Angew Chem Int Ed 40 3912-3913... [Pg.102]

Coskun A, Baytekin BT, Akkaya EU (2003) Novel fluorescent chemosensor for anions via modulation of oxidative PET a remarkable 25-fold enhancement of emission. Tetrahedron Lett 44 5649-5651... [Pg.102]

Zhou Q, Swager TM (1995) Fluorescent chemosensors based on energy migration in conjugated polymers the molecular wire approach to increased sensitivity. J Am Chem Soc 117 12593-12602... [Pg.105]

Bonacchi S, Rampazzo E, Montalti M et al (2008) Amplified fluorescence response of chemosensors grafted onto silica nanoparticles. Langmuir 24 8387-8392... [Pg.105]

An overview of the synthesis, structure, photophysical properties, and applications of squaraine rotaxanes as fluorescent imaging probes and chemosensors is provided in a recent review [67]. Although a variety of squaraine dyes form rotaxanes with the molecular cage 25 or with a tetralactam macrocyclic system introduced by Leigh and co-workers [16, 17], there is no evidence in the literature that conventional cyanine dyes can be embedded in these macrocycles. [Pg.180]

Fan L-J, Zhanga Y, Murphy CB, Angell SE, Parker MFL, Flynn BR, Jones WE Jr (2009) Fluorescent conjugated polymer molecular wire chemosensors for transition metal ion recognition and signaling. Coord Chem Rev 253 401 122... [Pg.383]

Zhou G, Cheng Y, Wang L, Jing X, Wang F (2005) Novel polyphenylenes containing phenol-substituted oxadiazole moieties as fluorescent chemosensors for fluoride ion. Macromolecules 38 2148-2153... [Pg.384]

Murphy CB, Zhang Y, Troxler T, Ferry V, Martin JJ, Jones WE Jr (2004) Probing Forster and Dexter energy-transfer mechanisms in fluorescent conjugated polymer chemosensors. J Phys Chem B 108 1537-1543... [Pg.386]

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