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Finite Size Effects on Hydrogen Bonds in Confined Water
Author(s) -
Musat Raluca,
Renault Jean Philippe,
Candelaresi Marco,
Palmer D. Jason,
Le Caër Sophie,
Righini Roberto,
Pommeret Stanislas
Publication year - 2008
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.200802630
Subject(s) - hydrogen bond , excited state , femtosecond , chemical physics , hydrogen , materials science , spectroscopy , molecular physics , photochemistry , chemistry , atomic physics , molecule , optics , physics , organic chemistry , laser , quantum mechanics
Femtosecond IR spectroscopy was used to study water confined in 1–50 nm pores. The results show that even large pores induce significant changes (for example excited‐state lifetimes, see diagram) to the hydrogen‐bond network, which are independent of pore diameter between 1 and 50 nm. Thus, the changes are not surface‐induced but rather finite size effects, and suggest a confinement‐induced enhancement of the acidic character of water.