1,5-DTNA, or 1,5-Bis((triisopropylsilyl)ethynyl)naphthalene (CAS 2762325-17-5), is an ultraviolet-emitting naphthalene derivative. Its structure places two (triisopropylsilyl)ethynyl arms on a naphthalene core, and it is typically employed as the acceptor (emitter) in triplet-triplet annihilation upconversion (TTA-UC) systems that convert visible light into UV light with a large anti-Stokes shift.
When paired with the MR-TADF sensitizer BN-2Cz-tBu, 1,5-DTNA enables green-to-UV upconversion. Under 532 nm laser excitation in solution, this pair has produced strong UC emission with an anti-Stokes shift up to 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%). Its isomer, 1,4-DTNA (TIPS-NPh), is offered in the same grades.
- Acceptor/emitter in visible-to-UV triplet-triplet annihilation upconversion (TTA-UC) studies.
- Green-to-UV upconversion systems combined with MR-TADF sensitizers such as BN-2Cz-tBu.
- Research into UV photon upconversion for photochemical transformations.
- Ultraviolet emitter studies in naphthalene-derivative photophysics.
| 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: M2522B1
- 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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