Photoexcitation Dynamics of 4-Aminopthalimide in Solution Investigated Using Femtosecond Time-Resolved Infrared Spectroscopy.

Hojeong Yoon, Seongchul Park, Raj Kumar Koninti, Manho Lim

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Article in International journal of molecular sciences, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

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5 · Who and what money

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4 authors.

Hojeong YoonDepartment of Chemistry and Chemistry Institute for Functional Materials, Pusan National University, Busan 46241, Republic of Korea.ORCID 0000-0003-4105-3750

Seongchul ParkDepartment of Chemistry and Chemistry Institute for Functional Materials, Pusan National University, Busan 46241, Republic of Korea.

Raj Kumar KonintiDepartment of Chemistry and Chemistry Institute for Functional Materials, Pusan National University, Busan 46241, Republic of Korea.ORCID 0009-0003-8748-7834

Manho LimDepartment of Chemistry and Chemistry Institute for Functional Materials, Pusan National University, Busan 46241, Republic of Korea.ORCID 0000-0002-8920-3458

Funding

National Research Foundation of Korea NRF-2023R1A2C2004993

6 · The paper itself

Abstract

Excited-state intramolecular proton transfer (ESIPT) reactions are crucial in photoresponsive materials and fluorescent markers. The fluorescent compound 4-aminophthalimide (4-AP) has been reported to exhibit solvent-assisted ESIPT in protic solvents, such as methanol, wherein the solvent interacts with 4-AP to form a six-membered hydrogen-bonded ring that is strengthened upon excitation. Although the controversial observation of ESIPT in 4-AP has been extensively studied, the molecular mechanism has yet to be fully explored. In this study, femtosecond infrared spectroscopy was used to investigate the dynamics of 4-AP in methanol and acetonitrile after excitation at 350 and 300 nm, which promoted 4-AP to the S

Indexed as

Spectrophotometry, InfraredAcetonitrilesAniline CompoundsMethanolPhotochemical ProcessesPhthalimidesProtonsSolutionsSolvents4-aminophthalimideacetonitrileAcetonitrilesAniline CompoundsMethanolPhthalimidesProtonsSolutionsSolventsfemtosecond time-resolved vibrational spectroscopyketo-to-enol tautomerizationsolution reaction dynamicssolvent-assisted ESIPTsolvent reorganization

Identifiers

PMID39456819

DOI10.3390/ijms252011038

PMCPMC11507449

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