Document Type

Article

Language

eng

Format of Original

4 p.

Publication Date

2016

Publisher

American Chemical Society

Source Publication

Journal of the American Chemical Society

Source ISSN

0002-7863

Original Item ID

DOI: 10.1021/jacs.6b04615; PubMed PMID: 27322216

Abstract

Zeolitic imidazolate frameworks (ZIFs) have emerged as a novel class of porous metal–organic frameworks (MOFs) for catalysis application because of their exceptional thermal and chemical stability. Inspired by the broad absorption of ZIF-67 in UV–vis-near IR region, we explored its excited state and charge separation dynamics, properties essential for photocatalytic applications, using optical (OTA) and X-ray transient absorption (XTA) spectroscopy. OTA results show that an exceptionally long-lived excited state is formed after photoexcitation. This long-lived excited state was confirmed to be the charge-separated (CS) state with ligand-to-metal charge-transfer character using XTA. The surprisingly long-lived CS state, together with its intrinsic hybrid nature, all point to its potential application in heterogeneous photocatalysis and energy conversion.

Comments

Accepted version. Journal of the American Chemical Society, Vol. 138, No. 26 (2016): 8072-8075. DOI. © American Chemical Society 2016. Used with permission.

Available for download on Thursday, June 01, 2017

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