TY - JOUR
T1 - Modulating spectral response of raw photosynthetic pigments via ternary cadmium chalcogenide quantum dots
T2 - simultaneous enhancement at green spectrum and inhibition at UV region
AU - Aykut, Sümeyye
AU - Ük, Nida
AU - Coşkun, İbrahim Yağız
AU - Keskin, Sultan Şahin
AU - Nar, Ilgın
AU - Trabzon, Levent
AU - Ünlü, Caner
N1 - Publisher Copyright:
© The Author(s) 2024.
PY - 2024/4
Y1 - 2024/4
N2 - Photosynthesis relies on the absorption of sunlight by photosynthetic pigments (PPs) such as chlorophylls and carotenoids. While these pigments are outstanding at harvesting light, their natural structure restricts their ability to harvest light at specific wavelengths. In this study, Oleic acid-capped CdSeS and CdTeS ternary quantum dots (QDs) were synthesized using a novel two-phase synthesis method. Then, these QDs were used to interact with raw PPs, a mixture of chlorophylls and carotenoids isolated from spinach. Our findings revealed the following: (1) Interacting QDs with raw PPs effectively inhibited the chlorophyll fluorescence of the pigments upon excitation in UV light region (250–400 nm) without causing any damage to their structure. (2) By forming an interaction with QDs, the chlorophyll fluorescence of raw PPs could be induced through excitation with green-light spectrum. (3) The composition of the QDs played a fundamental role in their interaction with PPs. Our study demonstrated that the photophysical properties of isolated PPs could be modified by using cadmium-based QDs by preserving the structure of the pigments themselves.
AB - Photosynthesis relies on the absorption of sunlight by photosynthetic pigments (PPs) such as chlorophylls and carotenoids. While these pigments are outstanding at harvesting light, their natural structure restricts their ability to harvest light at specific wavelengths. In this study, Oleic acid-capped CdSeS and CdTeS ternary quantum dots (QDs) were synthesized using a novel two-phase synthesis method. Then, these QDs were used to interact with raw PPs, a mixture of chlorophylls and carotenoids isolated from spinach. Our findings revealed the following: (1) Interacting QDs with raw PPs effectively inhibited the chlorophyll fluorescence of the pigments upon excitation in UV light region (250–400 nm) without causing any damage to their structure. (2) By forming an interaction with QDs, the chlorophyll fluorescence of raw PPs could be induced through excitation with green-light spectrum. (3) The composition of the QDs played a fundamental role in their interaction with PPs. Our study demonstrated that the photophysical properties of isolated PPs could be modified by using cadmium-based QDs by preserving the structure of the pigments themselves.
KW - Chlorophyll fluorescence
KW - Photosynthesis
KW - Quantum dots
UR - http://www.scopus.com/inward/record.url?scp=85186245298&partnerID=8YFLogxK
U2 - 10.1007/s11120-024-01085-7
DO - 10.1007/s11120-024-01085-7
M3 - Article
AN - SCOPUS:85186245298
SN - 0166-8595
VL - 160
SP - 1
EP - 16
JO - Photosynthesis Research
JF - Photosynthesis Research
IS - 1
ER -