Abstract
This paper describes the use of a phenyl bis(dithiocarbamate) (PBTC) linker to enhance the quantum yield of photoinduced electron transfer (eT) from a zinc porphyrin (ZnP) molecule (donor) to a CdSe quantum dot (QD) (acceptor), where quantum yield is defined as the fraction of photoexcited ZnP molecules in the sample that donate an electron to the QD. The PBTC ligand links the ZnP to the QD by coordinating to Cd2+ on the surface of the QD and the Zn metal center in ZnP via its dithiocarbamate groups. Compared with the donor-acceptor complex formed in the absence of PBTC linkers, where the ZnP molecule adsorbs to the QD through its carboxylate moiety, the PBTC linkage increases the binding affinity between ZnP molecules and QDs by an order of magnitude, from 1.0 × 105 ± (0.7 × 104) M-1 to 1.0 × 106 ± (1.0 × 105) M-1, and thereby increases the eT quantum yield by, for example, a factor of 4 (from 8% to 38%) within mixtures where the molar ratio ZnP:QD = 1:1.
| Original language | English |
|---|---|
| Pages (from-to) | 5195-5202 |
| Number of pages | 8 |
| Journal | Journal of Physical Chemistry C |
| Volume | 119 |
| Issue number | 9 |
| DOIs | |
| Publication status | Published - Mar 5 2015 |
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ASJC Scopus subject areas
- Physical and Theoretical Chemistry
- Electronic, Optical and Magnetic Materials
- Surfaces, Coatings and Films
- Energy(all)
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Enhancement of the yield of photoinduced charge separation in zinc porphyrin - Quantum dot complexes by a bis(dithiocarbamate) linkage. / Jin, Shengye; Tagliazucchi, Mario; Son, Ho Jin; Harris, Rachel D.; Aruda, Kenneth O.; Weinberg, David J.; Nepomnyashchii, Alexander B.; Farha, Omar K.; Hupp, Joseph T; Weiss, Emily A.
In: Journal of Physical Chemistry C, Vol. 119, No. 9, 05.03.2015, p. 5195-5202.Research output: Contribution to journal › Article
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TY - JOUR
T1 - Enhancement of the yield of photoinduced charge separation in zinc porphyrin - Quantum dot complexes by a bis(dithiocarbamate) linkage
AU - Jin, Shengye
AU - Tagliazucchi, Mario
AU - Son, Ho Jin
AU - Harris, Rachel D.
AU - Aruda, Kenneth O.
AU - Weinberg, David J.
AU - Nepomnyashchii, Alexander B.
AU - Farha, Omar K.
AU - Hupp, Joseph T
AU - Weiss, Emily A
PY - 2015/3/5
Y1 - 2015/3/5
N2 - This paper describes the use of a phenyl bis(dithiocarbamate) (PBTC) linker to enhance the quantum yield of photoinduced electron transfer (eT) from a zinc porphyrin (ZnP) molecule (donor) to a CdSe quantum dot (QD) (acceptor), where quantum yield is defined as the fraction of photoexcited ZnP molecules in the sample that donate an electron to the QD. The PBTC ligand links the ZnP to the QD by coordinating to Cd2+ on the surface of the QD and the Zn metal center in ZnP via its dithiocarbamate groups. Compared with the donor-acceptor complex formed in the absence of PBTC linkers, where the ZnP molecule adsorbs to the QD through its carboxylate moiety, the PBTC linkage increases the binding affinity between ZnP molecules and QDs by an order of magnitude, from 1.0 × 105 ± (0.7 × 104) M-1 to 1.0 × 106 ± (1.0 × 105) M-1, and thereby increases the eT quantum yield by, for example, a factor of 4 (from 8% to 38%) within mixtures where the molar ratio ZnP:QD = 1:1.
AB - This paper describes the use of a phenyl bis(dithiocarbamate) (PBTC) linker to enhance the quantum yield of photoinduced electron transfer (eT) from a zinc porphyrin (ZnP) molecule (donor) to a CdSe quantum dot (QD) (acceptor), where quantum yield is defined as the fraction of photoexcited ZnP molecules in the sample that donate an electron to the QD. The PBTC ligand links the ZnP to the QD by coordinating to Cd2+ on the surface of the QD and the Zn metal center in ZnP via its dithiocarbamate groups. Compared with the donor-acceptor complex formed in the absence of PBTC linkers, where the ZnP molecule adsorbs to the QD through its carboxylate moiety, the PBTC linkage increases the binding affinity between ZnP molecules and QDs by an order of magnitude, from 1.0 × 105 ± (0.7 × 104) M-1 to 1.0 × 106 ± (1.0 × 105) M-1, and thereby increases the eT quantum yield by, for example, a factor of 4 (from 8% to 38%) within mixtures where the molar ratio ZnP:QD = 1:1.
UR - http://www.scopus.com/inward/record.url?scp=84924149368&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84924149368&partnerID=8YFLogxK
U2 - 10.1021/acs.jpcc.5b00074
DO - 10.1021/acs.jpcc.5b00074
M3 - Article
VL - 119
SP - 5195
EP - 5202
JO - Journal of Physical Chemistry C
JF - Journal of Physical Chemistry C
SN - 1932-7447
IS - 9
ER -