What does this research mean for the field?

The five main vibrational spectroscopy techniques—infrared, Raman, near-infrared, far-infrared, and terahertz—offer distinct and complementary advantages for molecular identification, structural analysis, and the study of intermolecular interactions. Novelty: ClaimNovelty.SYNTHESIS. Consensus alignment: ConsensusAlignment.NEUTRAL.

What question did this study set out to answer?

The aim is to explore the principles, features, and applications of the five techniques of vibrational spectroscopy.

May 17, 2026BUNSEKI KAGAKU0 citationsOpen Access

Infrared, Raman, Near-infrared, Far-infrared, and Terahertz Spectroscopies —The Five Sisters of Vibrational Spectroscopy—

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YOYukihiro OZAKI

Key Points

The aim is to explore the principles, features, and applications of the five techniques of vibrational spectroscopy.
Discusses the history and principles of infrared, Raman, near-infrared, far-infrared, and terahertz spectroscopies.
Highlights recent applications and comparative strengths of each vibrational spectroscopy technique.
Explores how these methods aid in identifying molecules and studying molecular structures.
Infrared and Raman spectroscopies are shown to be powerful for molecular identification and structural analysis.
Near-infrared spectroscopy excels in non-destructive analysis of whole samples.
Far-infrared and terahertz techniques provide valuable insights into molecular interactions and lattice vibrations.

Abstract

赤外，ラマン，近赤外，遠赤外，テラヘルツ分光法のことをここでは振動分光法5姉妹と呼ぶこととする．分子振動は分子の構造や化学結合の強さなどを敏感に反映するので，振動分光法は分子の同定や分子構造の研究に非常に有用である．また，分子と周辺の環境との相互作用（例えば水素結合）の研究にもすぐれている．振動分光法５姉妹はそれぞれに利点を持つ．たとえば，赤外，ラマン分光法は分子の同定，分子構造の研究いずれにも非常に強力である．近赤外分光法は，丸ごとあるがままの非破壊分析に強い．遠赤外，テラヘルツ，低波数ラマン分光法は格子振動，骨格変角振動などによるバンドを与え，分子間相互作用の研究などに有用な情報を与える．本稿ではこの5姉妹の歴史，原理，特徴，応用などについて最近の応用例も含めて議論する．

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Yukihiro OZAKI (2026) studied this question.

synapsesocial.com/papers/6a095a427880e6d24efe0678 https://doi.org/10.2116/bunsekikagaku.75.175

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May 17, 2026BUNSEKI KAGAKU0 citationsOpen Access

Infrared, Raman, Near-infrared, Far-infrared, and Terahertz Spectroscopies —The Five Sisters of Vibrational Spectroscopy—

View Full Paper

YOYukihiro OZAKI

Key Points

The aim is to explore the principles, features, and applications of the five techniques of vibrational spectroscopy.
Discusses the history and principles of infrared, Raman, near-infrared, far-infrared, and terahertz spectroscopies.
Highlights recent applications and comparative strengths of each vibrational spectroscopy technique.
Explores how these methods aid in identifying molecules and studying molecular structures.
Infrared and Raman spectroscopies are shown to be powerful for molecular identification and structural analysis.
Near-infrared spectroscopy excels in non-destructive analysis of whole samples.
Far-infrared and terahertz techniques provide valuable insights into molecular interactions and lattice vibrations.

Abstract

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View Full Paper

Cite This Study

Yukihiro OZAKI (2026) studied this question.

synapsesocial.com/papers/6a095a427880e6d24efe0678 https://doi.org/10.2116/bunsekikagaku.75.175

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