A5062350225- X-ray Diffraction in Crystallography
- Crystallization and Solubility Studies
- Synthesis and biological activity
- Conducting polymers and applications
- Synthesis of Organic Compounds
- Crystal structures of chemical compounds
- Organic Electronics and Photovoltaics
- Perovskite Materials and Applications
- Multicomponent Synthesis of Heterocycles
- Bioactive Compounds and Antitumor Agents
- Molecular Junctions and Nanostructures
- TiO2 Photocatalysis and Solar Cells
- Advanced Photocatalysis Techniques
- Synthesis and bioactivity of alkaloids
- Synthesis and Biological Evaluation
- Catalytic C–H Functionalization Methods
- Chemical synthesis and alkaloids
- Surface Chemistry and Catalysis
- Alkaloids: synthesis and pharmacology
- Catalytic Processes in Materials Science
- Surface and Thin Film Phenomena
- Fluorine in Organic Chemistry
- Cancer therapeutics and mechanisms
- Advanced Nanomaterials in Catalysis
- Synthesis of Indole Derivatives
National Central University
2014-2025
Karpagam Academy of Higher Education
2020-2023
Avinashilingam University
2022
Bharathiar University
2009-2015
Tamkang University
2013-2015
Organic photovoltaics (OPVs) and dye-sensitized solar cells (DSSCs) have drawn great interest from both academics industry, due to the possibility of low-cost conversion photovoltaic energy at reasonable efficiencies. This review focuses on recent progress in molecular engineering technological aspects fused-thiophene-based organic dye molecules for applications cells. Particular attention has been paid design principles stability these molecules, as well effects various electrolyte systems...
The embedding of non-fullerene acceptor INDCDTT-b16 to PM6:Y6 binary blend devices enables the adjustment morphology, leading improvements in carrier mobility, bimolecular/trap-assisted recombination, and charge collection, promotes a PCE 16.27%.
Well-performing organic–inorganic halide perovskites are susceptible to poor efficiency and instability due their various defects at the interphases, grain boundaries (GBs), surfaces. In this study, an in situ method is utilized for effectively passivating under-coordinated Pb2+ of perovskite with new non-fullerene acceptors (NFAs) (INXBCDT; X = H, Cl, Br) through carbonyl cyano functional groups during antisolvent dripping process. It reveals that bicyclopentadithiophene (BCDT) core highly...
New branched alkyl tetrathienothiophene (TTAR)-based organic sensitizers with power conversion efficiency up to 11%.
The design of a dye-sensitized solar cell (DSSC) based on the simultaneous incorporation multiple dyes is examined. By investigating use porphyrin-based YD2-o-C8 and YDD6, organic chromophore TTAR, which can act as complementary absorbers, we are able to enhance capture incoming light across spectrum. This demonstrated first by using conventional DSSC architecture with liquid electrolyte performed power conversion efficiency (PCE) 11.2%, representing an improvement over cells each...
Three new fused thiophene semiconductors, end‐capped with diperfluorophenylthien‐2‐yl (DFPT) groups (DFPT‐thieno[2′,3′:4,5]thieno[3,2‐ b ]thieno[2,3‐d]thiophene (TTA), DFPT‐dithieno[2,3‐ :3′,2′‐ d ]thiophenes (DTT), and DFPT‐thieno[3,2‐ ]thiophene (TT)), are synthesized characterized in organic thin film transistors. Good environmental stability of the newly developed materials is demonstrated via thermal analysis as well degradation tests under white light. The molecular structures all...
A polymeric ionic liquid, poly(oxyethylene)-imide-imidazolium selenocyanate (POEI-IS), was newly synthesized and used for a multifunctional gel electrolyte in quasi-solid-state dye-sensitized solar cell (QSS-DSSC). POEI-IS has several functions: (a) acts as gelling agent the of DSSC, (b) possesses redox mediator SeCN–, which is aimed to form SeCN–/(SeCN)3– couple with more positive potential than that traditional I–/I3–, (c) chelates potassium cations through lone pair electrons oxygen atoms...
Abstract This review highlights our recent efforts in the development of organic semiconductors based on anthradithiophene (ADT), dithienothiophene (DTT), tetrathienoacene (TTA), benzothienodithiophene (BTDT), benzothienothiophene (BTT), chalcogen‐planarized BT, and some quinoidal oligothiophenes for application thin‐film transistors (OTFTs). We visualized various strategies that have been employed molecular architecture to improve stability as well solubility, energy levels are tuned...
New dicyclopentadithienothiophene (DCDTT) based non-fullerene acceptors 1–3 are introduced into PSC films. The INCl-DCDTT−perovskite hybrid film exhibits an excellent power conversion efficiency of 21.39%.
Abstract A decade of significant research has led to the emergence photovoltaic solar cells based on perovskites that have achieved an exceptionally high‐power conversion efficiency 26.08%. key breakthrough in perovskite (PSCs) occurred when solid hole‐transporting materials (HTMs) replaced liquid electrolytes dye‐sensitized (DSSCs), because HTMs play a crucial role improving performance as well cell stability. This review is mainly focused are responsible for hole transport and extraction...
A series of new metal-free organic dyes based on 3,3′-dithioalkyl-2,2′-bithiophene (SBT) chromophores was synthesized for use in dye-sensitized solar cells (DSSCs).
2,2,7,7-tetrakis(N,N-dip-methoxyphenylamine)-9,9-spirobifluorene (spiro-OMeTAD) is a popular hole-transporting material (HTM) in perovskite solar cells (PSCs), However, it suffers from high-cost and stability issues, which need to be overcome for PSC commercialization. Here, we report isomers of bithiophene-based HTMs functionalized with triarylamine imidazole PSCs. The planar 3-ImBT-2D (1) exhibits higher hole mobility than 5-ImBT-2D (2) via modulation donor-group positions. PSCs using HTM...
A series of 3,3'-dithioalkyl-2,2'-bithiophene (SBT)-based organic chromophores were designed and developed for the use in dye-sensitized solar cells (DSSCs). By appropriate structural modification SBT π-linkers with different alkyl chains conjugated thiophene units, chromophore aggregation interfacial charge recombination could be suppressed to a remarkable degree. Single-crystal optical/electrochemical data clearly show that core is nearly planar torsional angle <1°, likely via...
Improving perovskite film quality is essential for making solar cells with enhanced performance. A critical bottleneck progress in cell science the lack of a scalable coating method that can be used industrial manufacturing. This study investigated combined cooperation methylammonium acetate (MAAc) additive doping precursor solution and mixed nonfullerene small-molecule semiconductor (DCDTT) chlorobenzene an antisolvent spraying treatment preparation ultrasonic spray-coated film....
In the presence of substoichiometric amounts Co2(CO)8, internal bisarylalkynes undergo reductive dimerization with good to excellent yields. The Co2(CO)8-induced reactions described are experimentally quite simple and provide a very useful synthetic procedure for synthesis tetraphenylbutadienes which exhibit aggregation-induced emission enhancement, i.e., weak in solvents but strong fluorescence that lead toward formation aggregates or solid state.
Abstract Three new donor–π–donor (D‐π‐D) tetrathienoacene (thieno[2′,3′:4,5]thieno[3,2‐ b ]thieno[2,3‐ d ]thiophene (TTA))‐cored chromophores, end‐functionalized with electron‐donating triphenylamine (TPA) groups, were developed and characterized for their two‐photon‐related properties by using both nano‐ femtosecond laser pulses as the probing tools. TTA‐based chromophores exhibit stronger more widely dispersed two‐photon absorption (2PA) than those of dithienothiophene (DTT)‐based...
Abstract A rapid, simple, and efficient method for the preparation of various quinolino[2′,3′:7,6]cyclohept[1,2-b]indoles has been developed through Friedländer Pfitzinger condensations 1-oxo-cyclohept[b]indole with o-amino benzophenone isatin respectively. Reactions were performed by under different reaction conditions.
Abstract NaHCO3 has been found to be an efficient base catalyst for the synthesis of pyrano[2,3-a]carbazoles from 1-hydroxycarbazoles by multicomponent reaction using solvent-free grinding methods. In this case, products have in good yields, without formation any side product.