The Experts below are selected from a list of 279 Experts worldwide ranked by ideXlab platform
Kenzi Hori - One of the best experts on this subject based on the ideXlab platform.
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control of the superexchange interaction through Diphenyl Sulfide 4 4 diyl magnetic coupler by changing the oxidation state and conformation of the sulfur atom
Journal of the American Chemical Society, 1997Co-Authors: Kenji Matsuda, Takehiro Yamagata, Tomoo Seta, Hiizu Iwamura, Kenzi HoriAbstract:The exchange interaction between two triplet carbene centers through Diphenyl Sulfide 4,4‘-diyl, its sulfoxide and sulfone analogs, and thiaxanthene 2,7-diyl coupling units was studied. These dicarbenes were generated by photolysis of the corresponding bisdiazo precursors in MTHF matrices at cryogenic temperatures. From the temperature dependence of the ESR signals it was found that the dicarbene jointed through the Sulfide group has a quintet ground state; it serves as a ferromagnetic coupler. On the other hand, as the oxidation state or the geometry of the sulfur atom was changed to sulfoxide, sulfone, and thiaxanthene groups, antiferromagnetic interaction was observed between the two Diphenylcarbene units. The magnitude of the exchange interaction J/k was determined to be 11, −30, −92, and −21 K for Diphenyl Sulfide, sulfoxide, sulfone 4,4‘-diyl, and thiaxanthene 2,7-diyl couplers, respectively. In the ESR spectra of sterically unconstrained Sulfide and its analogs the isolated triplet signals were rat...
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Control of the “Superexchange” Interaction through Diphenyl Sulfide 4,4‘-Diyl Magnetic Coupler by Changing the Oxidation State and Conformation of the Sulfur Atom
Journal of the American Chemical Society, 1997Co-Authors: Kenji Matsuda, Takehiro Yamagata, Tomoo Seta, Hiizu Iwamura, Kenzi HoriAbstract:The exchange interaction between two triplet carbene centers through Diphenyl Sulfide 4,4‘-diyl, its sulfoxide and sulfone analogs, and thiaxanthene 2,7-diyl coupling units was studied. These dicarbenes were generated by photolysis of the corresponding bisdiazo precursors in MTHF matrices at cryogenic temperatures. From the temperature dependence of the ESR signals it was found that the dicarbene jointed through the Sulfide group has a quintet ground state; it serves as a ferromagnetic coupler. On the other hand, as the oxidation state or the geometry of the sulfur atom was changed to sulfoxide, sulfone, and thiaxanthene groups, antiferromagnetic interaction was observed between the two Diphenylcarbene units. The magnitude of the exchange interaction J/k was determined to be 11, −30, −92, and −21 K for Diphenyl Sulfide, sulfoxide, sulfone 4,4‘-diyl, and thiaxanthene 2,7-diyl couplers, respectively. In the ESR spectra of sterically unconstrained Sulfide and its analogs the isolated triplet signals were rat...
Kenji Matsuda - One of the best experts on this subject based on the ideXlab platform.
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control of the superexchange interaction through Diphenyl Sulfide 4 4 diyl magnetic coupler by changing the oxidation state and conformation of the sulfur atom
Journal of the American Chemical Society, 1997Co-Authors: Kenji Matsuda, Takehiro Yamagata, Tomoo Seta, Hiizu Iwamura, Kenzi HoriAbstract:The exchange interaction between two triplet carbene centers through Diphenyl Sulfide 4,4‘-diyl, its sulfoxide and sulfone analogs, and thiaxanthene 2,7-diyl coupling units was studied. These dicarbenes were generated by photolysis of the corresponding bisdiazo precursors in MTHF matrices at cryogenic temperatures. From the temperature dependence of the ESR signals it was found that the dicarbene jointed through the Sulfide group has a quintet ground state; it serves as a ferromagnetic coupler. On the other hand, as the oxidation state or the geometry of the sulfur atom was changed to sulfoxide, sulfone, and thiaxanthene groups, antiferromagnetic interaction was observed between the two Diphenylcarbene units. The magnitude of the exchange interaction J/k was determined to be 11, −30, −92, and −21 K for Diphenyl Sulfide, sulfoxide, sulfone 4,4‘-diyl, and thiaxanthene 2,7-diyl couplers, respectively. In the ESR spectra of sterically unconstrained Sulfide and its analogs the isolated triplet signals were rat...
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Control of the “Superexchange” Interaction through Diphenyl Sulfide 4,4‘-Diyl Magnetic Coupler by Changing the Oxidation State and Conformation of the Sulfur Atom
Journal of the American Chemical Society, 1997Co-Authors: Kenji Matsuda, Takehiro Yamagata, Tomoo Seta, Hiizu Iwamura, Kenzi HoriAbstract:The exchange interaction between two triplet carbene centers through Diphenyl Sulfide 4,4‘-diyl, its sulfoxide and sulfone analogs, and thiaxanthene 2,7-diyl coupling units was studied. These dicarbenes were generated by photolysis of the corresponding bisdiazo precursors in MTHF matrices at cryogenic temperatures. From the temperature dependence of the ESR signals it was found that the dicarbene jointed through the Sulfide group has a quintet ground state; it serves as a ferromagnetic coupler. On the other hand, as the oxidation state or the geometry of the sulfur atom was changed to sulfoxide, sulfone, and thiaxanthene groups, antiferromagnetic interaction was observed between the two Diphenylcarbene units. The magnitude of the exchange interaction J/k was determined to be 11, −30, −92, and −21 K for Diphenyl Sulfide, sulfoxide, sulfone 4,4‘-diyl, and thiaxanthene 2,7-diyl couplers, respectively. In the ESR spectra of sterically unconstrained Sulfide and its analogs the isolated triplet signals were rat...
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effect of the oxidation state of the sulfur atom on the exchange interaction between two triplet carbene units through Diphenyl Sulfide p p diyl couplers
Chemistry Letters, 1995Co-Authors: Kenji Matsuda, Takehiro Yamagata, Hiizu IwamuraAbstract:The exchange interaction between two triplet carbene centers through Diphenyl Sulfide p,p′-diyl and the corresponding sulfoxide coupling units was studied. While the former was found to be a ferromagnetic coupler, the latter was found to be an antiferromagnetic coupler.
Hiizu Iwamura - One of the best experts on this subject based on the ideXlab platform.
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control of the superexchange interaction through Diphenyl Sulfide 4 4 diyl magnetic coupler by changing the oxidation state and conformation of the sulfur atom
Journal of the American Chemical Society, 1997Co-Authors: Kenji Matsuda, Takehiro Yamagata, Tomoo Seta, Hiizu Iwamura, Kenzi HoriAbstract:The exchange interaction between two triplet carbene centers through Diphenyl Sulfide 4,4‘-diyl, its sulfoxide and sulfone analogs, and thiaxanthene 2,7-diyl coupling units was studied. These dicarbenes were generated by photolysis of the corresponding bisdiazo precursors in MTHF matrices at cryogenic temperatures. From the temperature dependence of the ESR signals it was found that the dicarbene jointed through the Sulfide group has a quintet ground state; it serves as a ferromagnetic coupler. On the other hand, as the oxidation state or the geometry of the sulfur atom was changed to sulfoxide, sulfone, and thiaxanthene groups, antiferromagnetic interaction was observed between the two Diphenylcarbene units. The magnitude of the exchange interaction J/k was determined to be 11, −30, −92, and −21 K for Diphenyl Sulfide, sulfoxide, sulfone 4,4‘-diyl, and thiaxanthene 2,7-diyl couplers, respectively. In the ESR spectra of sterically unconstrained Sulfide and its analogs the isolated triplet signals were rat...
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Control of the “Superexchange” Interaction through Diphenyl Sulfide 4,4‘-Diyl Magnetic Coupler by Changing the Oxidation State and Conformation of the Sulfur Atom
Journal of the American Chemical Society, 1997Co-Authors: Kenji Matsuda, Takehiro Yamagata, Tomoo Seta, Hiizu Iwamura, Kenzi HoriAbstract:The exchange interaction between two triplet carbene centers through Diphenyl Sulfide 4,4‘-diyl, its sulfoxide and sulfone analogs, and thiaxanthene 2,7-diyl coupling units was studied. These dicarbenes were generated by photolysis of the corresponding bisdiazo precursors in MTHF matrices at cryogenic temperatures. From the temperature dependence of the ESR signals it was found that the dicarbene jointed through the Sulfide group has a quintet ground state; it serves as a ferromagnetic coupler. On the other hand, as the oxidation state or the geometry of the sulfur atom was changed to sulfoxide, sulfone, and thiaxanthene groups, antiferromagnetic interaction was observed between the two Diphenylcarbene units. The magnitude of the exchange interaction J/k was determined to be 11, −30, −92, and −21 K for Diphenyl Sulfide, sulfoxide, sulfone 4,4‘-diyl, and thiaxanthene 2,7-diyl couplers, respectively. In the ESR spectra of sterically unconstrained Sulfide and its analogs the isolated triplet signals were rat...
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effect of the oxidation state of the sulfur atom on the exchange interaction between two triplet carbene units through Diphenyl Sulfide p p diyl couplers
Chemistry Letters, 1995Co-Authors: Kenji Matsuda, Takehiro Yamagata, Hiizu IwamuraAbstract:The exchange interaction between two triplet carbene centers through Diphenyl Sulfide p,p′-diyl and the corresponding sulfoxide coupling units was studied. While the former was found to be a ferromagnetic coupler, the latter was found to be an antiferromagnetic coupler.
Takehiro Yamagata - One of the best experts on this subject based on the ideXlab platform.
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control of the superexchange interaction through Diphenyl Sulfide 4 4 diyl magnetic coupler by changing the oxidation state and conformation of the sulfur atom
Journal of the American Chemical Society, 1997Co-Authors: Kenji Matsuda, Takehiro Yamagata, Tomoo Seta, Hiizu Iwamura, Kenzi HoriAbstract:The exchange interaction between two triplet carbene centers through Diphenyl Sulfide 4,4‘-diyl, its sulfoxide and sulfone analogs, and thiaxanthene 2,7-diyl coupling units was studied. These dicarbenes were generated by photolysis of the corresponding bisdiazo precursors in MTHF matrices at cryogenic temperatures. From the temperature dependence of the ESR signals it was found that the dicarbene jointed through the Sulfide group has a quintet ground state; it serves as a ferromagnetic coupler. On the other hand, as the oxidation state or the geometry of the sulfur atom was changed to sulfoxide, sulfone, and thiaxanthene groups, antiferromagnetic interaction was observed between the two Diphenylcarbene units. The magnitude of the exchange interaction J/k was determined to be 11, −30, −92, and −21 K for Diphenyl Sulfide, sulfoxide, sulfone 4,4‘-diyl, and thiaxanthene 2,7-diyl couplers, respectively. In the ESR spectra of sterically unconstrained Sulfide and its analogs the isolated triplet signals were rat...
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Control of the “Superexchange” Interaction through Diphenyl Sulfide 4,4‘-Diyl Magnetic Coupler by Changing the Oxidation State and Conformation of the Sulfur Atom
Journal of the American Chemical Society, 1997Co-Authors: Kenji Matsuda, Takehiro Yamagata, Tomoo Seta, Hiizu Iwamura, Kenzi HoriAbstract:The exchange interaction between two triplet carbene centers through Diphenyl Sulfide 4,4‘-diyl, its sulfoxide and sulfone analogs, and thiaxanthene 2,7-diyl coupling units was studied. These dicarbenes were generated by photolysis of the corresponding bisdiazo precursors in MTHF matrices at cryogenic temperatures. From the temperature dependence of the ESR signals it was found that the dicarbene jointed through the Sulfide group has a quintet ground state; it serves as a ferromagnetic coupler. On the other hand, as the oxidation state or the geometry of the sulfur atom was changed to sulfoxide, sulfone, and thiaxanthene groups, antiferromagnetic interaction was observed between the two Diphenylcarbene units. The magnitude of the exchange interaction J/k was determined to be 11, −30, −92, and −21 K for Diphenyl Sulfide, sulfoxide, sulfone 4,4‘-diyl, and thiaxanthene 2,7-diyl couplers, respectively. In the ESR spectra of sterically unconstrained Sulfide and its analogs the isolated triplet signals were rat...
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effect of the oxidation state of the sulfur atom on the exchange interaction between two triplet carbene units through Diphenyl Sulfide p p diyl couplers
Chemistry Letters, 1995Co-Authors: Kenji Matsuda, Takehiro Yamagata, Hiizu IwamuraAbstract:The exchange interaction between two triplet carbene centers through Diphenyl Sulfide p,p′-diyl and the corresponding sulfoxide coupling units was studied. While the former was found to be a ferromagnetic coupler, the latter was found to be an antiferromagnetic coupler.
Yangjun Xia - One of the best experts on this subject based on the ideXlab platform.
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Enhanced Organic Photovoltaic Performance through Modulating Vertical Composition Distribution and Promoting Crystallinity of the Photoactive Layer by Diphenyl Sulfide Additives.
ACS applied materials & interfaces, 2019Co-Authors: Yufei Wang, Zezhou Liang, Ningning Wang, Junfeng Tong, Chunming Yang, Xichang Bao, Yangjun XiaAbstract:To understand the vertical phase separation in the bulk junction active layer of organic photovoltaic devices is essential for controlling the charge transfer behavior and achieving effective charge collection. Here, Diphenyl Sulfide (DPS) was introduced as a novel additive into the PTB7-Th:PC71BM-based inverted polymer solar cells (PSCs), and the effect of additives on active blend films and photovoltaic characteristics was carefully studied. The results show that DPS could not only modulate the vertical composition distribution but also promote the ordered molecular packing of the photoactive layer, thus effectively improving exciton dissociation, charge transport, and collection, and thus exhibit an excellent power conversion efficiency of 9.7% with an improved fill factor (>70%) after using 3% DPS additive. The results show that the DPS solvent additive can effectively adjust the vertical phase distribution and crystallinity of blend films and improve the photovoltaic performance of the inverted organ...
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Enhanced Organic Photovoltaic Performance through Modulating Vertical Composition Distribution and Promoting Crystallinity of the Photoactive Layer by Diphenyl Sulfide Additives
2019Co-Authors: Yufei Wang, Zezhou Liang, Ningning Wang, Junfeng Tong, Chunming Yang, Xichang Bao, Yangjun XiaAbstract:To understand the vertical phase separation in the bulk junction active layer of organic photovoltaic devices is essential for controlling the charge transfer behavior and achieving effective charge collection. Here, Diphenyl Sulfide (DPS) was introduced as a novel additive into the PTB7-Th:PC71BM-based inverted polymer solar cells (PSCs), and the effect of additives on active blend films and photovoltaic characteristics was carefully studied. The results show that DPS could not only modulate the vertical composition distribution but also promote the ordered molecular packing of the photoactive layer, thus effectively improving exciton dissociation, charge transport, and collection, and thus exhibit an excellent power conversion efficiency of 9.7% with an improved fill factor (>70%) after using 3% DPS additive. The results show that the DPS solvent additive can effectively adjust the vertical phase distribution and crystallinity of blend films and improve the photovoltaic performance of the inverted organic photovoltaic devices
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synthesis of dithieno 2 3 d 2 3 d benzo 1 2 b 4 5 b dithiophene alt isoindigo conjugated polymer and enhancement of photovoltaic property with Diphenyl Sulfide additives
Journal of Polymer Research, 2015Co-Authors: Yangjun Xia, Junfeng Tong, Heng Zhang, Peng Zhang, Chunyan YangAbstract:An alternating low band gap conjugated polymer derived from 5.10-di(2-ethylhexyloxy)dithieno[2,3-d:2’,3’-d’]benzo[1,2-b:4,5-b’]dithiophene (DTBDT) and isoindigo derivative (ID), was synthesized and characterized. The polymer exhibits good solubility in organic solvent and extensive absorption from 350 to 780 nm with the highest occupied molecular orbital (HOMO) level of −5.38 eV and lowest unoccupied molecular orbital (LUMO) level of −3.80 eV. In spite of those, the power conversion efficiency (PCE) of 0.21 % for the photovoltaic cells (PVCs) from the blend of the polymer and [6, 6]-phenyl-C71-butyric acid methyl ester (PC71BM) is very low. Interestingly, the performances of the PVCs from the polymer are remarkably increased while a very small amount of Diphenyl Sulfide (DPS) is used as solvent additives, and the maximal PCE of 4.43 % is achieved in the PVCs from the blend of polymer and PC71BM (W:W, 1:1.5) with DPS as solvent additives under 100 mW/cm2 illumination (AM 1.5G).
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Synthesis of dithieno[2,3-d:2’,3’-d’]benzo[1,2-b:4,5-b’]dithiophene -alt-isoindigo conjugated polymer and enhancement of photovoltaic property with Diphenyl Sulfide additives
Journal of Polymer Research, 2014Co-Authors: Yangjun Xia, Junfeng Tong, Heng Zhang, Peng Zhang, Chunyan YangAbstract:An alternating low band gap conjugated polymer derived from 5.10-di(2-ethylhexyloxy)dithieno[2,3-d:2’,3’-d’]benzo[1,2-b:4,5-b’]dithiophene (DTBDT) and isoindigo derivative (ID), was synthesized and characterized. The polymer exhibits good solubility in organic solvent and extensive absorption from 350 to 780 nm with the highest occupied molecular orbital (HOMO) level of −5.38 eV and lowest unoccupied molecular orbital (LUMO) level of −3.80 eV. In spite of those, the power conversion efficiency (PCE) of 0.21 % for the photovoltaic cells (PVCs) from the blend of the polymer and [6, 6]-phenyl-C71-butyric acid methyl ester (PC71BM) is very low. Interestingly, the performances of the PVCs from the polymer are remarkably increased while a very small amount of Diphenyl Sulfide (DPS) is used as solvent additives, and the maximal PCE of 4.43 % is achieved in the PVCs from the blend of polymer and PC71BM (W:W, 1:1.5) with DPS as solvent additives under 100 mW/cm2 illumination (AM 1.5G).