【公開日：2024.07.25】【最終更新日：2024.06.11】

課題データ / Project Data

課題番号 / Project Issue Number

23CT0218

利用課題名 / Title

DDMEBTのディウェッティング構造の観察

利用した実施機関 / Support Institute

公立千歳科学技術大学 / Chitose IST

機関外・機関内の利用 / External or Internal Use

外部利用/External Use

技術領域 / Technology Area

【横断技術領域 / Cross-Technology Area】（主 / Main）物質・材料合成プロセス/Molecule & Material Synthesis（副 / Sub）計測・分析/Advanced Characterization

【重要技術領域 / Important Technology Area】（主 / Main）高度なデバイス機能の発現を可能とするマテリアル/Materials allowing high-level device functions to be performed（副 / Sub）-

キーワード / Keywords

電子顕微鏡/ Electronic microscope,フォトニクスデバイス/ Nanophotonics device,光デバイス/ Optical Device,光学顕微鏡/ Optical microscope

利用者と利用形態 / User and Support Type

利用者名（課題申請者）/ User Name (Project Applicant)

道信 剛志

所属名 / Affiliation

東京工業大学大学院物質理工学院

共同利用者氏名 / Names of Collaborators in Other Institutes Than Hub and Spoke Institutes

ARIM実施機関支援担当者 / Names of Collaborators in The Hub and Spoke Institutes

利用形態 / Support Type

（主 / Main）共同研究/Joint Research（副 / Sub）-

利用した主な設備 / Equipment Used in This Project

CT-010：走査型電子顕微鏡（SEM）
CT-008：蛍光顕微鏡

報告書データ / Report

概要（目的・用途・実施内容）/ Abstract (Aim, Use Applications and Contents)

DDMEBT is an organic donor-acceptor molecule that is a promising materials for large non-linear optical material for applications in all-optical computing and signal processing. The bulk crystal structure is known and here we try to form microcrystals on a substrate by firstly dewet the compound to form small droplet with subsequent annealing to transform each droplet into a microcrystal.

実験 / Experimental

DDMEBT was dissolved in methyl-ethyl ketone at a concentration of 0.1% and drop-cast on glass and mica. After evaporation, the samples were imaged by optical microscopy and electron microscopy.

結果と考察 / Results and Discussion

It could be confirmed that the compound dewets and forms microdroplets on both glass and mica. These drops are transparent and do not show birefringence, thus they are determined to be amorphous directly after solvent evaporation. Prolonged annealing at room temperature and at elevated temperature did not change the morphology. Thus we conclude that the material forms very stable amorphous glasses.

図・表・数式 / Figures, Tables and Equations

Optical micrograph of DDMEBT microdroplets on mica

SEM image of DDMEBT microdroplets on mica

その他・特記事項（参考文献・謝辞等） / Remarks(References and Acknowledgements)

1. Tsuyoshi Michinobu, Joshua C. May, Jin H. Lim, Corinne Boudon, Jean-Paul Gisselbrecht, Paul Seiler, Maurice Gross, Ivan Biaggio and Franc ̧ois Diederich, A new class of organic donor–acceptor molecules with large third-order optical nonlinearities, Chem. Commun. 737 (2005), DOI: 10.1039/b417393g
2. O. Karthaus, K. Ijiro, M. Shimomura, Ordered Self-Assembly of Nanosize Polystyrene Aggregates on Mica, Chem. Lett., 1996, 821

成果発表・成果利用 / Publication and Patents

論文・プロシーディング（DOIのあるもの） / DOI (Publication and Proceedings)

口頭発表、ポスター発表および、その他の論文 / Oral Presentations etc.

特許 / Patents

特許出願件数 / Number of Patent Applications：0件
特許登録件数 / Number of Registered Patents：0件