Photophysical Properties of a Tetrahydropentalene Acceptor for Upconversion

Experimental data characterizes a novel molecular acceptor, di(p-anisyl)tetrahydropentalene (TP-An), for triplet-triplet annihilation-assisted photon upconversion. Tomoki Nagaoka published the dataset in 2026, detailing key photophysical measurements. The dataset is small, approximately 2.8 KB in size.

Use Cases

• Modeling the relationship between molecular rigidity and excited state lifetimes using the singlet lifetime (1.13 ns) and triplet lifetime (654 μs) data.
• Analyzing energy level requirements for exergonic triplet-triplet annihilation using the provided singlet (E_S, 3.22 eV) and triplet (E_T, 1.62–1.79 eV) energy levels.
• Correlating acceptor properties with upconversion performance using the threshold excitation intensity (10 mW cm–2) and photon upconversion quantum yield (ca 23%).
• Studying the impact of fluorescence quantum yield (unity) and anti-Stokes shift (0.89 eV) on the efficiency of green-to-purple photon upconversion.

Strengths

• Reports precise, experimentally determined photophysical constants, including a singlet excited state lifetime of 1.13 ns and a triplet lifetime of 654 μs.
• Quantifies key performance metrics for photon upconversion, such as a 23% quantum yield and a low threshold excitation intensity of 10 mW cm–2.

Limitations

• Extremely limited scope, focusing on a single molecular acceptor (TP-An) in one solvent (toluene).
• Dataset size is only 2.8 KB, indicating a very small collection of data points, likely insufficient for statistical modeling.

Provenance

Source

Tomoki Nagaoka via figshare.

Collection Method

Experimental laboratory measurements of photophysical properties.

Freshness

Last updated in April 2026, indicating recent data.