Metal-organic frameworks chemical sensors

Kreno LE, Leong K, Farha OK et al (2012) Metal-organic framework materials as chemical sensors. Chem Rev 112 1105-1125... 

Afzal A, Dickert FL (2011) Surface acoustic wave sensors for chemical applications. In Korotcenkov G (ed) Chemical sensors comprehensive sensor technologies, vol 4, Solid state devices. Momentum, New York, pp 447-484 Ameloot R, Stappers L, Fransaer J, Alaerts L, Sels BF, De Vos DE (2009) Patterned growth of metal-organic framework coatings by electrochemical synthesis. Chem Mater 21 2580-2582 Ballantine DS, Wohltjen H (1989) Surface acoustic wave devices for chemical analysis. Anal Chem 61 704-715 Ballantine DS Jr, White RM, Martin SJ, Ricco AJ, Zellers ET, Frye GC, Wohltjen H (1996) Acoustic wave sensors theory, design, and physico-chemical applications. In Levy M, Stem R (eds) Applications of modern acoustics. Academic, San Diego... 

Keywords Charge transfer Chemical sensor Energy transfer Metal-organic frameworks Porous coordination polymers Structural transformation... 

Encapsulation of the chelates into nanopartieles often results in further improvements of their photophysical properties [219,220]. We have also seen above that relatively modest quantum yields can be compensated by introducing several emitting ions in one probe. This is achieved in luminescent metal-organic frameworks [221] or dendrimeric complexes [214] which then present attractive properties, including multifunctionality and nanoscale processability, for chemical sensors and bioprobes. 

In a great number of cases, zeolites are used as auxiliary elements. They may act either as a framework to stabilize the sensor material, as filter layers (either catalytic or size restrictive) to enhance selectivity of a sensitive film, or as a preconcentrator of specific analytes from diluted solutions. For example, due to excellent chemical and thermal stability, zeolites can be used as a substrate to prepare compounds and devices with desirable fundamental physical and chemical properties (Xu et al. 2006). For example, inorganic or organic compounds, metal and metal-organic compounds, and their clusters can be assembled into the pores and cages in zeohtes. Some nanosized metal or metal oxide particles have been successfully inserted into the caves and the pores or highly dispersed on the external surface of zeohtes. 

---