Bright luminescence from silane substituted and bridged silicon nanoclusters
文献情報
Olli Lehtonen, Dage Sundholm
Time-dependent density functional theory (TDDFT) calculations show that silicon nanoclusters (Si-NC) capped by linear silane groups have large oscillator strengths of the same magnitude as reported in recent experimental studies. We propose a mechanism where linear silanes attached to the Si-NC surface affect the optical properties enhancing the oscillator strengths and thereby accounting for the bright luminescence observed in the blue region of the visible spectrum. The anisotropic emission seen experimentally can also be explained by the presence of the silane groups on the cluster surface. The excitation energies are found to be only slightly affected by the silanes, whereas the oscillator strengths increase with the length of the silane chain and are significantly larger than obtained for unsubstituted Si-NCs. In TDDFT studies of Si-NC dimers interconnected by a linear silane bridge, we obtained large oscillator strengths indicating that such structures could be useful light sources for optical devices.
おすすめジャーナル
関連文献
An oxygen-passivated vanadium cluster [V@V10O15]− with metal–metal coordination produced by reacting Vn− with O2
Miao Yan, Si-Dian Li
DOI: 10.1039/D0CP05385F
Development of coarse-grained force field for alcohols: an efficient meta-multilinear interpolation parameterization algorithm
Junjie Song, Ying Yang, Lianghui Gao
DOI: 10.1039/D0CP05503D
Topological semimetal state with triply degenerate nodal points in a stable Cu2Te structure
Yiming Mi
DOI: 10.1039/D0CP05622G
A reliable and efficient resonance theory based on analysis of DFT wave functions
DOI: 10.1039/D0CP06207C
An unbiased confirmation of the participating isomers of C2B5− in the formation of its photo-detachment spectra: a theoretical study
Abhishek Kumar, T. Rajagopala Rao, Rudraditya Sarkar
DOI: 10.1039/D0CP04619A
Multiscale exploration of hydrocarbon adsorption and hopping through ZSM-5 channels – from Monte Carlo modelling to experiment
Maciej Strzempek, Karolina Tarach, Kinga Góra-Marek, Fernando Rey, Miguel Palomino, Susana Valencia, Witold Piskorz
DOI: 10.1039/D0CP05128D
Quantum spin Hall insulators and topological Rashba-splitting edge states in two-dimensional CX3 (X = Sb, Bi)
Shan-Shan Wang, Wencong Sun, Shuai Dong
DOI: 10.1039/D0CP05374K
The hierarchy of ab initio and DFT methods for describing an intramolecular non-covalent Si⋯N contact in the silicon compounds using electron diffraction geometries
Elena F. Belogolova, Sergey A. Shlykov, Alexey V. Eroshin, Evgeniya P. Doronina, Valery F. Sidorkin
DOI: 10.1039/D0CP05872F
こちらもおすすめ
(S)-四氢呋喃-3-羧酸の物理化学的性質は何ですか?
CAS番号168395-26-4の(S)-四氢呋喃-3-羧酸は、白色の結晶が特徴的な性質を持ちます。分子量は128.08であり、水に溶けやすく、アルコールなど...
塩基性硫黄化合物1,3-ジメチル-1-[5-(三氟甲基)-1,3,4-硫杂环己二酮-2-基]尿素を含む廃棄物はどのように処理すべきですか?
塩基性硫黄化合物1,3-ジメチル-1-[5-(三氟甲基)-1,3,4-硫杂环己二酮-2-基]尿素を含む廃棄物は、専門的な廃棄処理施設で焼却処理を行うべきです。ま...
インドリジン-2-カルボン酸は安全ですか?
インドリジン-2-カルボン酸は一般的に安全ですが、過度に濃い状態では刺激性があります。取り扱いには適切な防護具を使用し、直接触れや吸入を避ける必要があります。
5-甲基-2-(3-ピリジニル)-1,3-テイゾール-4-オールの市場動向や研究トレンドはどうですか?
5-甲基-2-(3-ピリジニル)-1,3-テイゾール-4-オールは、医薬品や農薬、および合成化学の分野において研究が進められています。市場動向としては、化学物質...
4,4',4''-(嘧啶-2,4,6-三基)三苯甲醛はどのように保存すればよいですか?
4,4',4''-(嘧啶-2,4,6-三基)三苯甲醛は、密閉容器に保管し、避けておくことが重要です。室温で保管し、直射日光を避けてください。
(3aR)-1,3,3-トリフェニルテトラヒドロ-3H-ピロロ[1,2-c][1,3,2]-オキザボロロールについて、適用される法規ガイドラインは何ですか?
(3aR)-1,3,3-トリフェニルテトラヒドロ-3H-ピロロ[1,2-c][1,3,2]-オキザボロロールは、GHS(国際危険物識別ルール)の分類が適用されま...
6-(4-氯苯氧基)吡啶-3-胺の代替品はありますか?
6-(4-氯苯氧基)吡啶-3-胺の代替品としては、他の芳香族アミン化合物や類似の除草剤が考えられます。ただし、他の化合物と同様に、代替品の選択には安全性と効果性...
3-フェニル-3,4-ジヒドロ-2H-1,4-ベンゾキサジンを取り扱う際の実験室安全事項は何ですか?
3-フェニル-3,4-ジヒドロ-2H-1,4-ベンゾキサジンを取り扱う際は、防塵マスク、ゴーグル、ゴム手袋を使用し、ドラフトチャンバー内で作業することを推奨しま...
掲載誌
Physical Chemistry Chemical Physics

Physical Chemistry Chemical Physics (PCCP) is an international journal co-owned by 19 physical chemistry and physics societies from around the world. This journal publishes original, cutting-edge research in physical chemistry, chemical physics and biophysical chemistry. To be suitable for publication in PCCP, articles must include significant innovation and/or insight into physical chemistry; this is the most important criterion that reviewers and Editors will judge against when evaluating submissions. The journal has a broad scope and welcomes contributions spanning experiment, theory, computation and data science. Topical coverage includes spectroscopy, dynamics, kinetics, statistical mechanics, thermodynamics, electrochemistry, catalysis, surface science, quantum mechanics, quantum computing and machine learning. Interdisciplinary research areas such as polymers and soft matter, materials, nanoscience, energy, surfaces/interfaces, and biophysical chemistry are welcomed if they demonstrate significant innovation and/or insight into physical chemistry. Joined experimental/theoretical studies are particularly appreciated when complementary and based on up-to-date approaches.










![2-(Methylsulfonyl)-2,4,5,6-tetrahydropyrrolo[3,4-c]pyrazole structure 2-(Methylsulfonyl)-2,4,5,6-tetrahydropyrrolo[3,4-c]pyrazole structure](https://static.chemtradehub.com/structs/122/1226781-80-1-09d5.webp)



![9H-Fluoren-9-ylmethyl [(2S)-1-hydroxy-3-(1H-indol-3-yl)-2-propanyl]carbamate structure 9H-Fluoren-9-ylmethyl [(2S)-1-hydroxy-3-(1H-indol-3-yl)-2-propanyl]carbamate structure](https://static.chemtradehub.com/structs/153/153815-60-2-a67d.webp)