Direct observation of vibrational dynamics in tin phthalocyanine

Autor:	Hiroki Hane, Masakatsu Hirasawa, Takayoshi Kobayashi, Yuzo Sakazaki
Rok vydání:	2004
Předmět:	Chemistry Analytical chemistry General Physics and Astronomy Infrared spectroscopy chemistry.chemical_element Molecular physics Hot band Absorbance chemistry.chemical_compound Molecular vibration Phthalocyanine Physical and Theoretical Chemistry Tin Absorption (electromagnetic radiation) Excitation
Zdroj:	Chemical Physics Letters. 392:390-395
ISSN:	0009-2614
DOI:	10.1016/j.cplett.2004.03.154
Popis:	Charge-transfer (CT)-excited state in phthalocyanine (Pc) tin dichloride is observed by real-time vibrational spectroscopy with a 6-fs pulse laser. Transient negative and positive absorbance change were observed for the CT- and Q-bands, respectively. The observed signal for the CT excitation dominantly couples with intermolecular vibrational modes in the Pc columns, while that for the Q-band couples only the in-plane deformation modes of the Pc macro-cycle. The Q-band, which is the main absorption in the visible and near-infrared region, has no obvious CT character in the primary stage of the photocarrier generation, which suggests the two-step carrier-generation model for Q-band excitation.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::32085018bb84aa386af9715e48b44756 https://doi.org/10.1016/j.cplett.2004.03.154 Zobrazit plný text záznamu Full Text from ScienceDirect