1,5-DTNA
CAS Number 2762325-17-5
High Purity Sublimed Materials, Materials, OLED Materials, Semiconducting Molecules
Triplet-triplet Annihilation Upconversion (TTA-UC) Naphthalene Derivative
High purity ultraviolet emitter, sublimed (≥99%) and unsublimed (≥98%) grades
Specifications | MSDS | Literature and Reviews
1,5-DTNA is a ultra-violet light emitter (λem = 350 nm) that is normally used as an acceptor to enable efficient visible-to-ultraviolet (UV) triplet-triplet annihilation upconversion (TTA-UC) with large anti-Stokes shift. It consists of a naphthalene core with two (triisopropylsilyl)ethynyl side arms.
Together with BN-2Cz-tBu, an MR-TADF sensitizer, a green-to-UV TTA-UC system can be realized by using 1,5-DTNA as the emitter acceptor. Photoexcitation of the sensitizer BN-2Cz-tBu and acceptor 1,5-DTNA system with 532 nm laser produces intense UC emission with a remarkable anti-Stokes shift up to 1.05 eV (367 nm ← 532 nm) and upconversion quantum yield up to 7.6% and threshold excitation intensity as low as 9.2 mW cm-2 in solution.
Its isomer 1,4-DTNA (TIPS-NPh) is also available in high purity sublimed and unsublimed grades.
General Information
| CAS Number | 2762325-17-5 |
|---|---|
| Chemical Formula | C32H48Si2 |
| Molecular Weight | 488.89 g/mol |
| Absorption | λmax 326 nm (in toluene) |
| Fluorescence | λem 554 nm (in toluene) |
| Triplet Energy |
ET1 = - 2.24 eV [2] |
| Synonyms | 1,5-DTNA, 1,5-Bis((triisopropylsilyl)ethynyl)naphthalene |
| Classification or Family | Naphthalene derivatives, Ultraviolet emitter, Triplet-triplet annihilation upconversion (TTA-UC) |
Product Details
| Purity | Unsublimed ≥98.0%, sublimed ≥99.0% |
|---|---|
| Melting Point | N/A |
| Appearance | Powder/crystal |
Chemical Structure
MSDS Documentation
1,5-DTNA MSDS SheetLiterature and Reviews
- N. Harada et al. (2020); Discovery of Key TIPS-Naphthalene for Efficient Visible-to-UV Photon Upconversion under Sunlight and Room Light, Angew. Chem. Int. Ed., 60 (1), 142-147; DOI: 10.1002/anie.202012419.
- Y. Wei et al. (2022); Multiple Resonance TADF Sensitizers Enable Green-to-Ultraviolet Photon Upconversion: Application in Photochemical Transformations, CCS Chem., 4 (12), 3852-3863; DOI: 10.31635/ccschem.022.202101507.
- Y. Li et al. (2025); Recent Progress in Molecular Design of Boron/Nitrogen-Based Multi-Resonance Materials for Narrowband Organic Light-Emitting Diodes, Adv. Opt. Mater., 2403556; DOI: 10.1002/adom.202403556.