Yonsei University · Engineering
Professor Clément Cabanetos' research lab specializes in the design and synthesis of advanced organic semiconductors and functional materials for optoelectronic and biomedical applications. Key research directions include the development of π-conjugated polymers and small molecules for organic solar cells, with a focus on molecular engineering to control self-assembly, charge transfer, and film morphology. The lab also explores novel materials for photodynamic therapy, particularly G-quadruplex-targeting photosensitizers, combining fluorescence imaging with therapeutic function. Additionally, they investigate click chemistry and post-polymerization modifications to create tunable, cross-linkable materials with tailored optoelectronic and optical properties.
Figures are computed from collected data and may differ slightly.
While varying the size and branching of solubilizing side chains in π-conjugated polymers impacts their self-assembling properties in thin-film devices, these structural changes remain difficult to anticipate. This report emphasizes the determining role that linear side-chain substituents play in poly(benzo[1,2-b:4,5-b']dithiophene-thieno[3,4-c]pyrrole-4,6-dione) (PBDTTPD) polymers for bulk heterojunction (BHJ) solar cell applications. We show that replacing branched side chains by linear ones i
Two acetylene-bridged molecules, built by grafting phthalimides on thienoisoindigo (<bold>TII</bold>) and diketopyrrolopyrrole (<bold>DPP</bold>) blocks, have been synthesized, characterized and evaluated as electron acceptor materials in air-processed inverted organic solar cells.
A push–pull σ–C60 molecular dyad was synthesized via Huisgen-type click chemistry and used as photoactive material for single-component organic solar cells. Steady-state photoluminescence (PL) experiments of the dyad in solution show a significant quenching of the emission of the push–pull moiety. Spin-casting of a solution of the dyad results in homogeneous and smooth thin films, which exhibit complete PL quenching in line with ultrafast photoinduced electron-transfer in the solid state. Spectr
Polymer semiconductors have recently attracted considerable attention owing to their (i) excellent optical properties, (ii) processability, (iii) inherent tunability of the energetics, and (iv) synthetic versatility.
Photodynamic therapy (PDT) ideally relies on the administration, selective accumulation and photoactivation of a photosensitizer (PS) into diseased tissues. In this context, we report a new heavy-atom-free fluorescent G-quadruplex (G4) DNA-binding PS, named DBI. We reveal by fluorescence microscopy that DBI preferentially localizes in intraluminal vesicles (ILVs), precursors of exosomes, which are key components of cancer cell proliferation. Moreover, purified exosomal DNA was recognized by a G4
We report herein the synthesis, the functionalization, and the successful radical polymerization of very nonlinear optical (NLO) active push–pull polyene chromophores (CPO). Second, the thermal Huisgen cyclo-addition cross-linking reaction was implemented, and it proved to be fully compatible with a polyene-based push–pull chromophore. Toward this goal, PMMA-co-CPO-3 and two cross-linkable polymers (PCC1-CPO-3 and PCC2-CPO-3) were first prepared and characterized by a modified Teng and Man techn
Three molecular semiconductors are compared and evaluated in organic field-effect transistors and organic solar cells. The molecules are constructed from the dyes diketopyrrolopyrrole (DPP), perylene diimide (PDI), and N-(alkyl)benzothioxanthene-3,4-dicarboximide (BTXI). The compound PDI–DPP–PDI (1) has previously been reported and used as a nonfullerene acceptor. The compounds PDI–DPP–BTXI (2) and BTXI–DPP–BTXI (3) were synthesized using direct (hetero)arylation methods and fully identified usi
The addition of donor or acceptor type molecular semiconductors to PBDB-T:PC<sub>60</sub>BM based organic photovoltaics leads to increases in open circuit-voltages and overall power conversion efficiencies.
Replacement of a phenyl ring by a methyl in the donor block of a small push–pull system leads to a spectacular decrease of the band gap and a large improvement of hole mobility and photovoltaic conversion efficiency.
The synthesis for monobrominated benzothioxanthene is reported, which is then employed in common palladium catalyzed coupling reactions for novel organic semiconductors.
A series of (D–π–A) small push–pull molecules involving a triphenylamine electron-rich group (D) connected to a dicyanovinyl electron-deficient unit (A) through different chalcogenophene type π-connectors has been synthesized.
The synthesis of benzothioxanthene imide based dimers is reported herein. Subtle chemical modifications were carried out and their impact on the optical and electrochemical properties was investigated for a better structure-property relationship analysis. The icing on the cake was that these new structures were used as light emitting materials for the fabrication and demonstration of the first BTXI-based OLEDs.
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