Assembly of gold nanorods functionalized by zirconium-based metal–organic frameworks for surface enhanced Raman scattering

Abstract

Surface-enhanced Raman scattering (SERS) is a promising detection technique providing outstanding molecular fingerprint identification and high sensitivity of analytes. Developing sensitive and stable SERS substrates is highly desirable but remains...

Metal–organic framework-derived photoelectrochemical sensors: structural design and biosensing technology

“…Structural features endow MOF materials with immense feasibility in the construction of sensing platforms with the advantages of facilitating adsorbing and preconcentrating the analytes, targetoriented molecular recognition, and real-time self-reference detection. Herein, MOF-based sensory materials were classified by the signal response, such as luminescence enhancement/ quenching, [71][72][73] multi-emission/ratiometric fluorescence, [74][75][76] surface plasmon resonance (SPR), 77,78 surface-enhanced Raman scattering (SERS), 79 electrical impedance, 80,81 and cyclic voltammetry. [82][83][84] In the following sections, we will introduce these methods in the application fields of agricultural field operations, explosive detection, and point-of-care clinical analysis.…”

Nanosized metal–organic frameworks as unique platforms for bioapplications

“…45 PEGylated gold nanorods have been used as seeds to grow core-shell systems for Zr-based NMOFs (NU-901). 46,47 In these cases, PEG chains from the nanorods have been proposed to interact with MOF precursors due to their hard oxygen and soft ethylene moieties. Also, PEG chains have been used to functionalize gold nanobipyramids in order to grow ZIF-8 selectively in the middle of the NPs avoiding their tip coverage.…”

Plasmon sensitivity and enhanced catalytic performance of nanocomposites based on Au nanorods

“…Most of these studies are closely associated with surface plasmon (SP) related effects. [1][2][3][4] SPs are collective oscillation formed by the coupling of electromagnetic waves and electrons. For smaller nanoparticles, if the incident light frequency matches the SP vibration frequency of the metal nanoparticles, the nanoparticles will strongly resonantly absorb the incident photon energy.…”