Superhydrophobic silicon nanocrystal–silica aerogel hybrid materials: synthesis, properties, and sensing application
Authors:
- Julian Kehrle,
- Tapas K. Purkait,
- Simon Kaiser,
- Konstantinos N. Raftopoulos,
- Malte Winnacker,
- Theresa Ludwig,
- Maryam Aghajamali,
- Marianne Hanzlik,
- Katia Rodewald,
- Tobias Helbich,
- Christine M. Papadakis,
- Jonathan G. C. Veinot,
- Bernhard Rieger
Abstract
Silicon nanocrystals (SiNCs) are abundant and exhibit exquisitely tailorable optoelectronic properties. The incorporation of SiNCs into highly porous and lightweight substrates such as aerogels leads to hybrid materials possessing the attractive features of both materials. This study describes the covalent deposition of SiNCs on and intercalation into silica aerogels, explores the properties, and demonstrates a prototype sensing application of the composite material. SiNCs of different sizes were functionalized with triethoxyvinylsilane (TEVS) via a radical grafting approach and subsequently used for the synthesis of photoluminescent silica hybrids. The resulting SiNC-containing aerogels possess high porosities, SiNC-based size-dependent photoluminescence, transparency, and a superhydrophobic macroscopic surface. The materials were used to examine the photoluminescence response toward low concentrations of 3-nitrotoluene (270 μM), demonstrating their potential as a sensing platform for high-energy materials.
- Record ID
- CUT2f82611fb0d9401085c4bf4313a72b80
- Publication categories
- ;
- Author
- Journal series
- Langmuir, ISSN 0743-7463, e-ISSN 1520-5827
- Issue year
- 2018
- Vol
- 34
- No
- 16
- Pages
- 4888-4896
- Other elements of collation
- rys.; tab.; wykr.; Bibliografia (na s.) - 4895-4896; Bibliografia (liczba pozycji) - 53; Oznaczenie streszczenia - Abstr.; Numeracja w czasopiśmie - Vol. 34, Iss. 16
- Keywords in English
- silica aerogel, hybrid materials, sensing applications
- DOI
- DOI:10.1021/acs.langmuir.7b03746 Opening in a new tab
- URL
- https://pubs.acs.org/doi/10.1021/acs.langmuir.7b03746 Opening in a new tab
- Language
- eng (en) English
- Score (nominal)
- 35
- Additional fields
- Indeksowana w: Web of Science, Scopus
- Uniform Resource Identifier
- https://cris.pk.edu.pl/info/article/CUT2f82611fb0d9401085c4bf4313a72b80/
- URN
urn:pkr-prod:CUT2f82611fb0d9401085c4bf4313a72b80
* presented citation count is obtained through Internet information analysis, and it is close to the number calculated by the Publish or PerishOpening in a new tab system.