Photoinduced electron transfer across an organic molecular wall: octa acid encapsulated ESIPT dyes as electron donors

2017 ◽  
Vol 16 (6) ◽  
pp. 840-844 ◽  
Author(s):  
Fabiano S. Santos ◽  
Elamparuthi Ramasamy ◽  
V. Ramamurthy ◽  
Fabiano S. Rodembusch

Efficient photoinduced electron transfer from proton transfer dyes encapsulated within water soluble supramolecular host octa acid to electron acceptors present outside the capsule was observed in aqueous solution.

2017 ◽  
Vol 16 (8) ◽  
pp. 1335-1335
Author(s):  
Fabiano S. Santos ◽  
Elamparuthi Ramasamy ◽  
V. Ramamurthy ◽  
Fabiano S. Rodembusch

Correction for ‘Photoinduced electron transfer across an organic molecular wall: octa acid encapsulated ESIPT dyes as electron donors’ by Fabiano S. Santos et al., Photochem. Photobiol. Sci., 2017, 16, 840–844.


2018 ◽  
Vol 42 (19) ◽  
pp. 15587-15592 ◽  
Author(s):  
Jing Huang ◽  
Yu Ding ◽  
Hongyu Fu ◽  
Bo Chen ◽  
Yifeng Han

A new Excited State Intramolecular Proton Transfer (ESIPT) based water-soluble fluorescent chemodosimeter for the ratiometric detection of palladium ions has been rationally designed and developed.


RSC Advances ◽  
2016 ◽  
Vol 6 (5) ◽  
pp. 3783-3791 ◽  
Author(s):  
Maria A. Cardona ◽  
Carl J. Mallia ◽  
Ulrich Baisch ◽  
David C. Magri

Two novel anthracene-based chemosensors appended with amino(ethanesulfonate) groups function as fluorescent PET turn-on probes for protons and turn-off probes for ferric ions in water.


An aqueous mixture of chloroplasts, hydrogenase and an electron transfer catalyst on illumination liberates H 2 , the source of the H atoms being water. The rate and duration of H 2 production from such a system depends on the stability of chloroplast and hydrogenase activities in light and oxygen. Both chloroplasts and hydrogenases can be stabilized to a certain degree by immobilization in gels or by incubation in bovine serum albumin. Natural electron carriers of hydrogenases are ferredoxin, cytochrome c 3 and NAD. Viologen dyes and synthetic iron-sulphur particles (Jeevanu) can substitute for the biological carriers. Methyl viologen, photoreduced in the presence of chloroplasts, can liberate H 2 in combination with Pt (Adam’s catalyst). An aqueous solution of proflavine can be photoreduced in the presence of organic electron donors such as EDTA, cysteine, dithiothreitol, etc.; the reduced proflavine can subsequently liberate H 2 with MV-Pt, MV-hydrogenase, ferredoxin-hydrogenase or cytochrome-hydrogenase systems.


The Analyst ◽  
2014 ◽  
Vol 139 (12) ◽  
pp. 2986-2989 ◽  
Author(s):  
Jiyoung Kim ◽  
Youngmi Kim

A water-soluble sulfonate-BODIPY dye1was developed for the selective detection of HOCl/OCl−in aqueous buffer solution. The probe, which displays extremely weak fluorescence owing to efficient photoinduced electron transfer (PeT) from the pendant catechol donor, responds to HOCl/OCl−through a dramatic enhancement of its fluorescence intensity.


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