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The objective of this project is to develop and investigate a new class of self-assembled microcrystalline emitters based on Covalent Organic Frameworks (COFs) exhibiting thermally activated delayed fluorescence (TADF). In the proposed materials, the TADF process will be confined within the COF interior and accompanied by a throughspace charge-transfer (TSCT) mechanism. To achieve this, electron-donating (D) and electron-accepting (A) moieties will be simultaneously incorporated into the COF structure. The D and A units will be electronically distinct but structurally analogous in terms of linker length and geometric alignment, enabling their mutual exchangeability and systematic tuning of electronic properties across a series of isoreticular D–A COFs. Selfassembly-driven crystallization is expected to promote spontaneous face-to-face D–A alignment, which is essential for short-range interactions and for forming charge-transfer excited states with spatially separated frontier orbitals. The project will combine organic synthesis, COF materials chemistry, structural characterization, photophysics, and numerical modeling. Molecular building blocks will be synthesized and used to construct COFs with predetermined architectures. The resulting materials will be characterized using PXRD, SEM, Raman spectroscopy, and solid-state NMR. Comparative physicochemical studies—including absorption, steadystate and time-resolved emission, and quantum-yield measurements—together with computational modeling and crystallographic analysis will identify the structural factors that enhance or suppress TSCT-TADF efficiency in organic crystalline materials. The project therefore requires expertise in synthetic organic chemistry, porous materials (COFs), and excited-state photophysics (TADF).

Required qualifications: Expertise in synthetic organic chemistry, with documented experience in conducting reactions under inert-atmosphere conditions; experience in the preparation and characterization of COFs or other self-assembled organic materials; broad knowledge of material-characterization techniques, including PXRD, Raman and IR spectroscopy, and photoluminescence methods. Resposibilities: PhD student supervision; synthesis of molecular precursors and covalent organic frameworks; material and spectroscopic characterization of the obtained materials; preparation of COF thin films and assembly of COF-based OLED devices; OLED device characterization; data interpretation; preparation of publications.

We offer a post-doctoral position (full-time employment) in the Institute of Physical Chemistry PAS with a gross salary of Around 9650 PLN gross per month financed from the NCN OPUS 30 Project No 2025/59/B/ST5/01207 Entitled: “Covalent organic frameworks exhibiting thermally activated delayed fluorescence” 100% of the work time of Postdoc will be devoted to the realization of the proposed project. The offer is for 12 months, with the possibility of extending the contract up to a total of 48 months

The Post-doc will join a multidisciplinary research team and contribute to tasks spanning organic synthesis, advanced spectroscopy, and computational materials modelling. This broad range of activities will provide an opportunity to strengthen practical and analytical skills in materials chemistry, gain experience in combining experimental and theoretical approaches, and develop expertise in the design and characterization of functional materials. The position will also offer opportunities to collaborate with leading experts in the field, expand the candidate’s professional network, and build a strong foundation for further academic or research-oriented career development. The successful candidate will be eligible for all programs at the IPC PAS, including the IPC PAS Young Scientists competition and the IPC PAS Young Scientists Mobility competition. Institute provides an opportunity to participate in ERASMUS+ programme.

1. PhD degree obtained in the year of employment in the project or within 12* years before 1 January of the year of employment in the project. For researchers with multiple PhDs, the date of the first PhD award is deemed the reference date. Extension might apply according to National Science Centre, Poland, rules. * in accordance with the National Science Centre’s approval to change the condition regarding the number of years after obtaining the doctoral degree.

2. Additionally, the candidate for the postdoctoral position must meet the following condition:

• their PhD degree has been conferred by an institution other than the one employing them at this position. Otherwise, they must have completed a continuous and evidenced research fellowship of at least 9 months during their studies at the doctoral school, doctoral studies or after being conferred their PhD degree at another institution than the participating entity for the project and outside the country in which their PhD degree was conferred ;

• they will be employed for a period of at least 6 months;

• when the remuneration is paid, they will be receiving no other remuneration paid from the funds granted to research projects under NCN calls under the heading of direct costs;

• when the remuneration is paid, they will be receiving no remuneration from another employer pursuant to an employment contract, including an employer with registered office outside of Poland,

• when the remuneration is paid, they will be receiving no pension benefits or equivalent benefits in Poland or abroad.

3. Expertise in synthetic organic chemistry, with documented experience in conducting reactions under inert-atmosphere conditio.

4. Experience in the preparation and characterization of COFs or other self-assembled organic materials.

5. broad knowledge of material-characterization techniques, including PXRD, Raman and IR spectroscopy, and photoluminescence methods.

6. Ability to communicate fluently in English (written and spoken).

7. Strong motivation to work and solving scientific problems, creativity, and analytical thinking

The Recruitment Commission will take into account the following criteria:

- competencies for specific tasks in the research project

- knowledge of organic chemistry synthetic methods and materials characterization

- knowledge of photophysics of organic emitters

- previous scientific achievements

- awards and distinctions resulting from the conducted research