1,5-DTNA (1,5-Bis((triisopropylsilyl)ethynyl)naphthalene, CAS 2762325-17-5) is an ultraviolet-emitting naphthalene derivative, emitting at λem = 350 nm. Its structure is built on a naphthalene core carrying two (triisopropylsilyl)ethynyl arms, and it serves mainly as the acceptor (annihilator) in triplet-triplet annihilation upconversion (TTA-UC), converting visible light into UV with a large anti-Stokes shift.
Paired with the MR-TADF sensitizer BN-2Cz-tBu, 1,5-DTNA forms a green-to-UV upconversion system. When this pair is excited with a 532 nm laser in solution, it delivers strong upconverted emission with an anti-Stokes shift reaching 1.05 eV (367 nm ← 532 nm), an upconversion quantum yield up to 7.6% and a threshold excitation intensity as low as 9.2 mW cm -2.
The material is supplied as a powder/crystal in two grades: unsublimed (≥98.0%) and sublimed (≥99.0%), in 250 mg, 500 mg and 1 g packs.
- Acceptor/emitter in visible-to-UV triplet-triplet annihilation upconversion (TTA-UC) research.
- Green-to-UV upconversion systems combined with the MR-TADF sensitizer BN-2Cz-tBu under 532 nm excitation.
- Studies of photon upconversion with large anti-Stokes shifts for photochemical transformations.
| Brand | Ossila |
|---|---|
| CAS number | 2762325-17-5 |
| Molecular formula | C32H48Si2 |
| Purity | Unsublimed ≥98.0%, sublimed ≥99.0% |
| Category | — |
| Pack sizes | 250 mg, 500 mg, 1 g |
| Physical form | Powder/crystal |
| Storage | — |
- Product code: M2522A1
- Molecular Weight: 488.89 g/mol
- Absorption: λmax 326 nm (in toluene)
- Fluorescence: λem 554 nm (in toluene)
- Triplet Energy: ET1 = - 2.24 eV
- Synonyms: 1,5-DTNA, 1,5-Bis((triisopropylsilyl)ethynyl)naphthalene
- Classification: Naphthalene derivatives, Ultraviolet emitter, Triplet-triplet annihilation upconversion (TTA-UC)
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