1- hydroxy-3,6,8-pyrenetrisulfonic acid

A limited number of commercially available hydroxyarenes, including hydroxy-pyrenetrisulfonate ( pyranine , HPTS), have somewhat higher photoacidities than naphthols and have been used as photoacids for experiments requiring instant changes in acidity, e.g., pH jump. Again, HPTS is limited to aqueous solvents. 

SWCNTs were modified with several water-soluble pyrene derivatives (1-pyreneacetic acid, 1-pyrenecarboxylic acid, 1-pyrenebutyric acid, and 8-hydroxy-l,3,6-pyrenetrisulfonic acid) bearing negatively charged ionic head-groups, to act as anchors to several pyridium headgroups present in a series of water-soluble metalloporphyrins [MP] + (M = Zn, Co, and Fe) [60a]. Interactions between the metalloporphyrins and SWCNTs proceeded through a combination of associative van der Waals (spacer-CNT) and electrostatic interactions (metalloporphyrins-spacer-CNT), as demonstrated by the combination of spectroscopic and surface techniques. 

CAS 6358-69-6 EINECS/ELINCS 228-783-6 Synonyms 8-Hydroxy-1,3,6-pyrenetrisulfonic acid trisodium salt Solvent green 7 Trisodium... 

P-Pyrene. See Pyrene Pyrene, 1-nitro-. See 1-Nitropyrene 1,3,6-Pyrenetrisulfonic acid, 8-hydroxy-, trisodium salt. See Solvent green 7 Pyretherm. See Resmethrin Pyrethrin. See Pyrethrin II Pyrethrum Pyrethrin I... 

Pyranine 1,3,6-Pyrenetrisulfonic acid, 8-hydroxy-, trisodium salt Trisodium 8-hydroxypyrene-1,3,6-trisulfonate... 

Carbon dioxide dissolved in sea water Fiber dipped in HPTS solution Aqueous solution of 8-hydroxy-1,3,6-pyrenetrisulfonic acid-trisodium salt Fluorescence 450 530 — O-fiOO ppm 5 min 58... 

Pyranin and Prodan. Water consumption was probed during the early stage of the sol-gel reaction of TMOS by using excited state proton transfer of PYRANIN (8-hydroxy-1,3,6-pyrenetrisulfonic acid trisodium salt Fig. 20-8) (Kaufman, 1988). This PYRANIN was applied to study aminosilicate matrix (Pouxviel, 1989) and as an in situ fluorescence... 

Barnadas-Rodriguez, R. Effect and mechanism of association of 8-Hydroxy-1,3,6-pyrenetrisulfonic acid to chitosan Physicochemical properties of the complex. Macwmol. Chem. Phys. 2013, 214, 99-106. 

Hydroxypropyl)phosphonothioic acid 0,0-dibulyl ester, see D-00234 8-Hydroxy-1,3,6-pyrenetrisulfonic acid, H-00517... 

Other fluorescent colorants can be used to produce pH, pNHs, and pCX)2 optical sensors. One example is the trisodium salt of 8-hydroxy 1,3,6-pyrenetrisulfonic acid (called HOPS A or HPTS) whose basic form can be excited at 470 nm to emit fluorescence at 510 nm [203, 204]. The CX)2 optical sensor requires a silicone membrane to contain a bicarbonate solution, just like potentiometric pC02 electrodes. A further similarity with potentiometric electrodes is that the pH, pNHs and pC02 optical sensors serve as the bases for enzyme sensors. The appropriate enzymatic membrane is simply attached. The optical sensor for penicillin uses penicillinase to catalyse the transformation of penicillin into penicilloic acid. The acid is detectable with a pH optical sensor that uses fluorescein isothiocyanate (FITC) as a colored indicator [205]. 

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