関連する実験動画
Updated: Feb 3, 2026

11:19
Spatiotemporal Analysis of Cytokinetic Events in Fission Yeast
Published on: February 20, 2017
7.7K
9,10-ビス (フェニルエチニル) アントラセンの薄膜におけるシングレット分裂
Youn Jue Bae1, Gyeongwon Kang1, Christos D Malliakas1
1Department of Chemistry and Institute for Sustainability and Energy at Northwestern , Northwestern University , Evanston , Illinois 60208-3113 , United States.
Journal of the American Chemical Society
|October 30, 2018
まとめ
シングレット分裂 (SF) は,1つの高エネルギーエクシトンを 2つの低エネルギートリプルへと変換し,太陽電池の効率を高めます. 研究者らは,BPEAフィルムに 有効なSFを発見し,太陽光発電の応用には有望な材料です.
科学分野:
- 材料科学
- 写真化学
- オーガニック電子
背景:
- シングレット分裂 (SF) は,シングレットエクシトンを2つのトリプルエクシトンに変換し,太陽電池の効率を高めるプロセスです.
- 既存のSF材料は安定性がなく,トリプルエネルギーが低いため,デバイスでの使用が制限されています.
- 有機染色体は 効率的な太陽エネルギー変換技術の開発の鍵です
研究 の 目的:
- シングレット分裂の適用のための9,10-bis ((フェニルエチニル) アントラセン (BPEA) の可能性を調査する.
- 多結晶BPEA薄膜のSF効率と運動を分析する.
- 太陽電池の性能を改善する候補としてBPEAを評価する.
主な方法:
- ポリ結晶型BPEA薄膜の特徴
- シングレットとトリップレットエネルギーを決定するスペクトル分析.
- SF率 (kSFAとkSFB) を測定するための運動学的研究.
- トリプル収穫量の決定
主要な成果:
- 効率的なシングレット分裂は,BPEAの多結晶薄膜で観察された.
- BPEAは固体状態で高シングレット (2.40 eV) とトリプルレット (1.11 eV) のエネルギーを示します.
- BPEAの2つのポリモルフ (C2 / cとPbcn) は,異なるSF率を示した: kSFA = (109 ± 4 ps) -1とkSFB = (490 ± 10 ps) -1.
- 180 ± 20% の高トリプル出産が測定されました.
結論:
- 9,10-bis (フェニルエチニル) アントラセン (BPEA) は,ポリ結晶薄膜における効率的なシングレット分裂を示している.
- 高トリプルエネルギーと効率的なSFプロセスは,次世代の太陽電池にBPEAを有望な材料にしています.
- BPEAの性質は,実際の装置における太陽エネルギー変換効率の向上の可能性を示唆しています.
関連する概念動画
Nuclear Fission
12.5K
Many heavier elements with smaller binding energies per nucleon can decompose into more stable elements that have intermediate mass numbers and larger binding energies per nucleon—that is, mass numbers and binding energies per nucleon that are closer to the “peak” of the binding energy graph near 56. Sometimes neutrons are also produced. This decomposition of a large nucleus into smaller pieces is called fission. The breaking is rather random with the formation of a large...
12.5K
Binary Fission
63.5K
Fission is the division of a single entity into two or more parts, which regenerate into separate entities that resemble the original. Organisms in the Archaea and Bacteria domains reproduce using binary fission, in which a parent cell splits into two parts that can each grow to the size of the original parent cell. This asexual method of reproduction produces cells that are all genetically identical.
63.5K
Binary Fission
3.0K
Binary fission is the primary mode of asexual reproduction in prokaryotes, such as bacteria. It results in the production of two genetically identical daughter cells. This highly efficient process ensures the rapid propagation of bacterial populations under favorable conditions and involves coordinated cellular and molecular events.DNA Replication and SeparationThe process begins with the replication of the bacterial chromosome. The circular DNA molecule unwinds at a specific origin of...
3.0K
Nuclear Power
9.5K
Controlled nuclear fission reactions are used to generate electricity. Any nuclear reactor that produces power via the fission of uranium or plutonium by bombardment with neutrons has six components: nuclear fuel consisting of fissionable material, a nuclear moderator, a neutron source, control rods, reactor coolant, and a shield and containment system.
Nuclear Fuels
Nuclear fuel consists of a fissile isotope, such as uranium-235, which must be present in sufficient quantity to provide a...
Nuclear Fuels
Nuclear fuel consists of a fissile isotope, such as uranium-235, which must be present in sufficient quantity to provide a...
9.5K
Nuclear Transmutation
20.7K
Nuclear transmutation is the conversion of one nuclide into another. It can occur by the radioactive decay of a nucleus, or the reaction of a nucleus with another particle. The first manmade nucleus was produced in Ernest Rutherford’s laboratory in 1919 by a transmutation reaction, the bombardment of one type of nuclei with other nuclei or with neutrons. Rutherford bombarded nitrogen-14 atoms with high-speed α particles from a natural radioactive isotope of radium and observed...
20.7K
Nuclear Fusion
33.9K
The process of converting very light nuclei into heavier nuclei is also accompanied by the conversion of mass into large amounts of energy, a process called fusion. The principal source of energy in the sun is a net fusion reaction in which four hydrogen nuclei fuse and ultimately produce one helium nucleus and two positrons.
A helium nucleus has a mass that is 0.7% less than that of four hydrogen nuclei; this lost mass is converted into energy during the fusion. This reaction produces about...
A helium nucleus has a mass that is 0.7% less than that of four hydrogen nuclei; this lost mass is converted into energy during the fusion. This reaction produces about...
33.9K

