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1. Decoupling and Coupling of the Host–Dopant Interaction by Manipulating Dopant Movement in Core/Shell Quantum Dots

   https://doi.org/10.1021/acs.jpclett.0c01861  

   Hofman, Elan ; Khammang, Alex ; Wright, Joshua T. ; Li, Zhi-Jun ; McLaughlin, Peter Francis ; Davis, Andrew Hunter ; Franck, John Mark ; Chakraborty, Arindam ; Meulenberg, Robert W. ; Zheng, Weiwei ( August 2020 , The Journal of Physical Chemistry Letters)
2. 3,4,5‐Trimethoxy Substitution on an N‐DMBI Dopant with New N‐Type Polymers: Polymer‐Dopant Matching for Improved Conductivity‐Seebeck Coefficient Relationship

   https://doi.org/10.1002/anie.202110505  

   Han, Jinfeng ; Chiu, Arlene ; Ganley, Connor ; McGuiggan, Patty ; Thon, Susanna M. ; Clancy, Paulette ; Katz, Howard E. ( November 2021 , Angewandte Chemie International Edition)

   Achieving high electrical conductivity and thermoelectric power factor simultaneously for n‐type organic thermoelectrics is still challenging. By constructing two new acceptor‐acceptor n‐type conjugated polymers with different backbones and introducing the 3,4,5‐trimethoxyphenyl group to form the new n‐type dopant 1,3‐dimethyl‐2‐(3,4,5‐trimethoxyphenyl)‐2,3‐dihydro‐1H‐benzo[d]imidazole (TP‐DMBI), high electrical conductivity of 11 S cm⁻¹and power factor of 32 μW m⁻¹ K⁻²are achieved. Calculations using Density Functional Theory show that TP‐DMBI presents a higher singly occupied molecular orbital (SOMO) energy level of −1.94 eV than that of the common dopant 4‐(1, 3‐dimethyl‐2, 3‐dihydro‐1H‐benzoimidazol‐2‐yl) phenyl) dimethylamine (N‐DMBI) (−2.36 eV), which can result in a larger offset between the SOMO of dopant and lowest unoccupied molecular orbital (LUMO) of n‐type polymers, though that effect may not be dominant in the present work. The doped polymer films exhibit higher Seebeck coefficient and power factor than films using N‐DMBI at the same doping levels or similar electrical conductivity levels. Moreover, TP‐DMBI doped polymer films offer much higher electron mobility of up to 0.53 cm² V⁻¹ s⁻¹than films with N‐DMBI doping, demonstrating the potential of TP‐DMBI, and 3,4,5‐trialkoxy DMBIs more broadly, for high performance n‐type organic thermoelectrics.

    

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3. 3,4,5‐Trimethoxy Substitution on an N‐DMBI Dopant with New N‐Type Polymers: Polymer‐Dopant Matching for Improved Conductivity‐Seebeck Coefficient Relationship

   https://doi.org/10.1002/ange.202110505  

   Han, Jinfeng ; Chiu, Arlene ; Ganley, Connor ; McGuiggan, Patty ; Thon, Susanna M. ; Clancy, Paulette ; Katz, Howard E. ( November 2021 , Angewandte Chemie)

   Achieving high electrical conductivity and thermoelectric power factor simultaneously for n‐type organic thermoelectrics is still challenging. By constructing two new acceptor‐acceptor n‐type conjugated polymers with different backbones and introducing the 3,4,5‐trimethoxyphenyl group to form the new n‐type dopant 1,3‐dimethyl‐2‐(3,4,5‐trimethoxyphenyl)‐2,3‐dihydro‐1H‐benzo[d]imidazole (TP‐DMBI), high electrical conductivity of 11 S cm⁻¹and power factor of 32 μW m⁻¹ K⁻²are achieved. Calculations using Density Functional Theory show that TP‐DMBI presents a higher singly occupied molecular orbital (SOMO) energy level of −1.94 eV than that of the common dopant 4‐(1, 3‐dimethyl‐2, 3‐dihydro‐1H‐benzoimidazol‐2‐yl) phenyl) dimethylamine (N‐DMBI) (−2.36 eV), which can result in a larger offset between the SOMO of dopant and lowest unoccupied molecular orbital (LUMO) of n‐type polymers, though that effect may not be dominant in the present work. The doped polymer films exhibit higher Seebeck coefficient and power factor than films using N‐DMBI at the same doping levels or similar electrical conductivity levels. Moreover, TP‐DMBI doped polymer films offer much higher electron mobility of up to 0.53 cm² V⁻¹ s⁻¹than films with N‐DMBI doping, demonstrating the potential of TP‐DMBI, and 3,4,5‐trialkoxy DMBIs more broadly, for high performance n‐type organic thermoelectrics.

    

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4. Dopant-Induced Energetic Disorder in Conjugated Polymers: Determinant Roles of Polymer–Dopant Distance and Composite Electronic Structures

   https://doi.org/10.1021/acs.jpcc.3c07197  

   Lu-Díaz, Michael ; Duhandžić, Muhamed ; Harrity, Simon ; Samanta, Subhayan ; Akšamija, Zlatan ; Venkataraman, Dhandapani ( March 2024 , The Journal of Physical Chemistry C)
5. Carbon dots using a household cleaning liquid as a dopant for iron detection in hydroponic systems

   https://doi.org/10.1039/d3ra01713c  

   Hjort, Robert G. ; Pola, Cícero C. ; Casso-Hartmann, Lisseth ; Vanegas, Diana C. ; McLamore, Eric ; Gomes, Carmen L. ( May 2023 , RSC Advances)

   Carbon dots for iron sensing in hydroponic systems. Iron (Fe) is a required micronutrient in plants for the production of chlorophyll and transport of oxygen.

    

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