Abstract
While metal-organic frameworks (MOFs) have been under thorough investigation over the past two decades, photoconductive MOFs are an emerging class of materials with promising applications in light harvesting and photocatalysis. To date, there is not a general method to investigate the photoconductivity of polycrystalline MOF samples as-prepared. Herein, we utilize time-resolved terahertz spectroscopy along with a new sample preparation method to determine the photoconductivity of Zn2TTFTB, an archetypical conductive MOF, in a noncontact manner. Using this technique, we were able to gain insight into MOF photoconductivity dynamics with subpicosecond resolution, revealing two distinct carrier lifetimes of 0.6 and 31 ps and a long-lived component of several ns. Additionally, we determined the frequency dependent photoconductivity of Zn2TTFTB which was shown to follow Drude-Smith behavior. Such insights are crucially important with regard to developing the next generation of functional photoconductive MOF materials.
| Original language | English |
|---|---|
| Pages (from-to) | 9793-9797 |
| Number of pages | 5 |
| Journal | Journal of the American Chemical Society |
| Volume | 141 |
| Issue number | 25 |
| DOIs | |
| Publication status | Published - Jun 26 2019 |
Fingerprint
ASJC Scopus subject areas
- Catalysis
- Chemistry(all)
- Biochemistry
- Colloid and Surface Chemistry
Cite this
Metal-Organic Framework Photoconductivity via Time-Resolved Terahertz Spectroscopy. / Pattengale, Brian; Neu, Jens; Ostresh, Sarah; Hu, Gongfang; Spies, Jacob A.; Okabe, Ryotaro; Brudvig, Gary W; Schmuttenmaer, Charles A.
In: Journal of the American Chemical Society, Vol. 141, No. 25, 26.06.2019, p. 9793-9797.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Metal-Organic Framework Photoconductivity via Time-Resolved Terahertz Spectroscopy
AU - Pattengale, Brian
AU - Neu, Jens
AU - Ostresh, Sarah
AU - Hu, Gongfang
AU - Spies, Jacob A.
AU - Okabe, Ryotaro
AU - Brudvig, Gary W
AU - Schmuttenmaer, Charles A.
PY - 2019/6/26
Y1 - 2019/6/26
N2 - While metal-organic frameworks (MOFs) have been under thorough investigation over the past two decades, photoconductive MOFs are an emerging class of materials with promising applications in light harvesting and photocatalysis. To date, there is not a general method to investigate the photoconductivity of polycrystalline MOF samples as-prepared. Herein, we utilize time-resolved terahertz spectroscopy along with a new sample preparation method to determine the photoconductivity of Zn2TTFTB, an archetypical conductive MOF, in a noncontact manner. Using this technique, we were able to gain insight into MOF photoconductivity dynamics with subpicosecond resolution, revealing two distinct carrier lifetimes of 0.6 and 31 ps and a long-lived component of several ns. Additionally, we determined the frequency dependent photoconductivity of Zn2TTFTB which was shown to follow Drude-Smith behavior. Such insights are crucially important with regard to developing the next generation of functional photoconductive MOF materials.
AB - While metal-organic frameworks (MOFs) have been under thorough investigation over the past two decades, photoconductive MOFs are an emerging class of materials with promising applications in light harvesting and photocatalysis. To date, there is not a general method to investigate the photoconductivity of polycrystalline MOF samples as-prepared. Herein, we utilize time-resolved terahertz spectroscopy along with a new sample preparation method to determine the photoconductivity of Zn2TTFTB, an archetypical conductive MOF, in a noncontact manner. Using this technique, we were able to gain insight into MOF photoconductivity dynamics with subpicosecond resolution, revealing two distinct carrier lifetimes of 0.6 and 31 ps and a long-lived component of several ns. Additionally, we determined the frequency dependent photoconductivity of Zn2TTFTB which was shown to follow Drude-Smith behavior. Such insights are crucially important with regard to developing the next generation of functional photoconductive MOF materials.
UR - http://www.scopus.com/inward/record.url?scp=85067994305&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85067994305&partnerID=8YFLogxK
U2 - 10.1021/jacs.9b04338
DO - 10.1021/jacs.9b04338
M3 - Article
VL - 141
SP - 9793
EP - 9797
JO - Journal of the American Chemical Society
JF - Journal of the American Chemical Society
SN - 0002-7863
IS - 25
ER -