Electrostatically Regulated Photoinduced Electron Transfer in “Cationic” Eco-Friendly CuInS2/ZnS Quantum Dots in Water. Xavier, J. A. M., Devatha, G., Roy, S., Rao, A., & Pillai, P. P. Journal of Materials Chemistry A, 6(44):22248–22255, November, 2018. Publisher: The Royal Society of ChemistryPaper doi abstract bibtex The potency of eco-friendly copper indium sulfide/zinc sulfide core/shell quantum dots (CIS/ZnS QDs) as efficient light harvesters in water is presented. A place exchange protocol is developed to prepare the much demanded cationic ([+]) CIS/ZnS QDs carrying a permanent positive charge, with ∼60% retention of the QD photoluminescence (PL) in water. Both steady-state and time-resolved photophysical studies confirm efficient electron transfer from the photoexcited CIS/ZnS QDs to indocyanine green (ICG) dye. The electrostatic attraction between the oppositely charged [+] CIS/ZnS QDs and [−] ICG dye is responsible for the formation of a strong ground state complex, which is vital for achieving an efficient electron transfer process in water. The successful demonstration of the efficient light harvesting properties using [+] CIS/ZnS QDs will be decisive in the development of artificial photosynthetic systems based on eco-friendly quantum dots.
@article{xavier_electrostatically_2018,
title = {Electrostatically {Regulated} {Photoinduced} {Electron} {Transfer} in “{Cationic}” {Eco}-{Friendly} {CuInS2}/{ZnS} {Quantum} {Dots} in {Water}},
volume = {6},
issn = {2050-7496},
url = {https://pubs.rsc.org/en/content/articlelanding/2018/ta/c8ta05269g},
doi = {10.1039/C8TA05269G},
abstract = {The potency of eco-friendly copper indium sulfide/zinc sulfide core/shell quantum dots (CIS/ZnS QDs) as efficient light harvesters in water is presented. A place exchange protocol is developed to prepare the much demanded cationic ([+]) CIS/ZnS QDs carrying a permanent positive charge, with ∼60\% retention of the QD photoluminescence (PL) in water. Both steady-state and time-resolved photophysical studies confirm efficient electron transfer from the photoexcited CIS/ZnS QDs to indocyanine green (ICG) dye. The electrostatic attraction between the oppositely charged [+] CIS/ZnS QDs and [−] ICG dye is responsible for the formation of a strong ground state complex, which is vital for achieving an efficient electron transfer process in water. The successful demonstration of the efficient light harvesting properties using [+] CIS/ZnS QDs will be decisive in the development of artificial photosynthetic systems based on eco-friendly quantum dots.},
language = {en},
number = {44},
urldate = {2020-07-27},
journal = {Journal of Materials Chemistry A},
author = {Xavier, Jewel Ann Maria and Devatha, Gayathri and Roy, Soumendu and Rao, Anish and Pillai, Pramod P.},
month = nov,
year = {2018},
note = {Publisher: The Royal Society of Chemistry},
pages = {22248--22255}
}
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