Covalent phthalocyanine-fullerene dyads: synthesis, electron transfer in solutions and molecular films

2011 ◽  
Vol 15 (09n10) ◽  
pp. 780-790 ◽  
Author(s):  
Nikolai V. Tkachenko ◽  
Alexander Efimov ◽  
Helge Lemmetyinen
Keyword(s):  
Covalent Bonding ◽  
Polar Media ◽  
Donor And Acceptor ◽  
Sufficient Degree ◽  
Degree Of Control ◽  
Organic Optoelectronic ◽  
Covalently Linked ◽  
Photoinduced Charge ◽  
Mutual Organization ◽  
Intensive Development

Phthalocyanine-fullerene dyads have being under intensive development and investigation during past decade. Strong absorption of the phthalocyanine chromophore in the red part of the spectrum and ability of the dyad to perform efficient photoinduced charge transfer in non-polar media make them particularly attractive for organic optoelectronic applications. This microreview will focus on covalently linked phthalocyanine-fullerene conjugates in solutions and solid nanostructures. The covalent bonding enables sufficient degree of control over mutual organization of the donor and acceptor parts, and makes possible to investigate the relationships between molecular structure and functioning of single molecules and molecular assemblies.

Photoinduced processes in dyads and triads containing a ruthenium(II)-bis(terpyridine) photosensitizer covalently linked to electron donor and acceptor groups

1991 ◽  
Vol 30 (22) ◽  
pp. 4230-4238 ◽  
Author(s):  
Jean Paul. Collin ◽  
Stephane. Guillerez ◽  
Jean Pierre. Sauvage ◽  
Francesco. Barigelletti ◽  
Luisa. De Cola ◽  
...  
Keyword(s):  
Electron Donor ◽  
Donor And Acceptor ◽  
Electron Donor And Acceptor ◽  
Covalently Linked ◽  
Photoinduced Processes

Effect of photoinduced charge displacement on organic optoelectronic conversion

2011 ◽  
Vol 84 (20) ◽  
Author(s):  
Laigui Hu ◽  
Akito Iwasaki ◽  
Rie Suizu ◽  
Yukiko Noda ◽  
Bo Li ◽  
...  
Keyword(s):  
Charge Displacement ◽  
Organic Optoelectronic ◽  
Photoinduced Charge

Phthalocyanine-corannulene conjugates: Synthesis, complexation studies with a pyridyl-functionalized C60 fullerene, and photophysical properties

2020 ◽  
Vol 24 (01n03) ◽  
pp. 410-415 ◽  
Author(s):  
Juan A. Suanzes ◽  
Sumit Chaurasia ◽  
Rafael M. Krick Calderon ◽  
Dirk M. Guldi ◽  
Giovanni Bottari ◽  
...  
Keyword(s):  
Photophysical Properties ◽  
Supramolecular Interactions ◽  
C60 Fullerene ◽  
Time Resolved ◽  
Complexation Studies ◽  
Donor Acceptor ◽  
Photophysical Studies ◽  
Covalently Linked ◽  
Photoinduced Charge

We report here the synthesis and characterization of some novel Zn(II)phthalocyanine (Pc)-corannulene conjugates and their complexation ability towards a pyridyl-functionalized C[Formula: see text] fullerene through metal-ligand supramolecular interactions. Steady-state and time-resolved photophysical studies carried out on these electron donor–acceptor (D–A) Zn(II)Pc-corannulene/C[Formula: see text] ensembles indicate the formation of photogenerated charge-separated species. Interestingly, a stabilization of the photoinduced charge-separated state is observed in the case of the D–A supramolecular complexes comprising the corannulene-substituted Zn(II)Pcs when compared to their non-corannulene functionalized Zn(II)Pc analogues. We rationalize this stabilizing effect of the charge-separated state exerted by the corannulene as a result of the increased [Formula: see text]-extension and augmented hydrophobicity of the Zn(II)Pc core by the covalently-linked polyaromatic hydrocarbon (PAH) fragment.

scholarly journals The Stoichiometry of TCNQ-Based Organic Charge-Transfer Cocrystals

Crystals ◽  
2020 ◽  
Vol 10 (11) ◽  
pp. 993
Author(s):  
Jiaoyang Gao ◽  
Huifei Zhai ◽  
Peng Hu ◽  
Hui Jiang
Keyword(s):  
Charge Transfer ◽  
Physical Properties ◽  
Research Direction ◽  
Research Attention ◽  
Energy Devices ◽  
Donor And Acceptor ◽  
Wide Range ◽  
Significant Research ◽  
Potential Applications ◽  
Organic Optoelectronic

Organic charge-transfer cocrystals (CTCs) have attracted significant research attention due to their wide range of potential applications in organic optoelectronic devices, organic magnetic devices, organic energy devices, pharmaceutical industry, etc. The physical properties of organic charge transfer cocrystals can be tuned not only by changing the donor and acceptor molecules, but also by varying the stoichiometry between the donor and the acceptor. However, the importance of the stoichiometry on tuning the properties of CTCs has still been underestimated. In this review, single-crystal growth methods of organic CTCs with different stoichiometries are first introduced, and their physical properties, including the degree of charge transfer, electrical conductivity, and field-effect mobility, are then discussed. Finally, a perspective of this research direction is provided to give the readers a general understanding of the concept.

Highly efficient organic ultraviolet photodetectors based on excellent Cu (I) complexes

2013 ◽  
Vol 21 (3) ◽  
Author(s):  
C. Liu ◽  
B. Su ◽  
M. Liu ◽  
X. Zhang ◽  
L. Wang ◽  
...  
Keyword(s):  
High Performance ◽  
Uv Light ◽  
High Response ◽  
Working Mechanism ◽  
Photoluminescence Quenching ◽  
Uv Light Irradiation ◽  
Donor And Acceptor ◽  
Electron Donor And Acceptor ◽  
Ultraviolet Photodetectors ◽  
Photoinduced Charge

AbstractWe demonstrate high response organic ultraviolet photodetectors using 4,4′,4″-tris[3-methyl-pheny(phenyl)amino]tri-phenylamine (m-MTDATA) and two novel Cu(I) complexes, [Cu(DPEphos)(PyPhen)]BF4 (CuDP)(DPEphos = Bis [2-(diphenylphosphino)phenyl]ether, PyPhen = pyrazino[2,3-f][1,10]phenanthroline) and [Cu(DPEbenz)(PyPhen)]BF4 (CuBP) (DPEbenz = 1,2-bis(diphenylphosphino)benzene) to act as the electron donor and acceptor, respectively. Strong photoluminescence quenching of m-MTDATA by Cu(I) complexes is observed manifesting the efficient photoinduced charge transfer that occurs between m-MTDATA and Cu(I) complexes. The optimized photodetector based on CuBP exhibits a maximum response of 276 mA/W at −12 V under an illumination of 365 nm UV light irradiation with an intensity of 1.75 mW/cm2. The high response is attributed to feasible energy level match, efficient electron transfer from m-MTDATA to CuBP and skillful device design. More detailed working mechanism of harvesting high performance is also discussed.

scholarly journals Optimizing Inventory Carrying Cost Using Rank Order Clustering Approach for Small and Medium Enterprises (SMES)

2021 ◽  
Vol 23 (1) ◽  
Author(s):  
Ganesh Narkhede B ◽  
◽  
Ganesh Narkhede B ◽  
Neela Rajhans ◽  
◽  
...  
Keyword(s):  
Inventory Management ◽  
Small And Medium Enterprises ◽  
Rank Order ◽  
Cluster Formation ◽  
Quantity Discounts ◽  
Sufficient Degree ◽  
Inventory Strategy ◽  
Clustering Approach ◽  
Degree Of Control ◽  
Medium Enterprises

For any company, whether big enterprises or small and medium-sized enterprises (SMEs), inventory is one of the key assets. Therefore, inventory-related decisions directly influence the revenue generated by the firm. This work aims to find a sufficient degree of control over each inventory item and to mitigate the inventory management problems of SMEs. Rank Order Clustering (ROC) algorithm is used in this study for multi-item inventory item aggregation. The proposed framework is tested on a medium-sized gearmanufacturing firm that manufactures 40 different types of planetary and customized gear-boxes. The results demonstrate 47.64 % of cost-saving through the proposed methodology of cluster formation using ROC and quantity discounts. This approach helps to identify different assemblies to aggregate the component requirements and to formulate a particular inventory strategy to minimize inventory carrying costs for each component.

A Neutral Donor-Acceptor p-Stack: Solid-State Structures of 1 : 1 Pyromellitic Diimide-Dialkoxynaphthalene Cocrystals

1997 ◽  
Vol 50 (5) ◽  
pp. 439 ◽  
Author(s):  
Darren G. Hamilton ◽  
Daniel E. Lynch ◽  
Karl A. Byriel ◽  
Colin H. L. Kennard
Keyword(s):  
Hydrogen Bonding ◽  
Solid State ◽  
Hydrogen Bonds ◽  
Neutral Donor ◽  
Hydrogen Bonding Interactions ◽  
Donor And Acceptor ◽  
Structural Preferences ◽  
Donor Acceptor ◽  
Covalently Linked ◽  
Solid State Structures

Pyromellitic diimide forms orange-coloured cocrystals of 1 : 1 stoichiometry with dialkoxynaphthalene derivatives. The solid-state structures of two examples are presented. The cocrystal formed with 2,6-dimethoxynaphthalene presents vertical stacks of alternating π-rich and π-deficient subunits with the long axes of the respective components approximately parallel. Investigation of the packing in the cocrystal also reveals a stabilizing array of hydrogen bonds between the components of adjacent stacks. Cocrystallization with 1,5-[2-(2-hydroxyethoxy)ethoxy]naphthalene, a derivative bearing hydroxy terminated ethyleneoxy chains, gives rise to an altered structural arrangement. Alternating donor- acceptor stacks once again dominate the structure but adopt a geometry where the long axes of the constituents are essentially perpendicular. Hydrogen-bonding interactions result in the formation of continuous non-covalently linked columns of donor and acceptor subunits by linking the terminal hydroxy functions of the naphthalene component to the imide protons. The structural preferences revealed by these solid-state analyses indicate that these complexes are useful prototypes of more complex neutral supramolecular assemblies.

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