Journal ArticleDOI
Electronic Energy Transfer in CdSe Quantum Dot Solids
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TLDR
Electronic energy transfer between close packed quantum dots using cw and time resolved photoluminescence is demonstrated and is consistent with long-range resonance transfer of electronic excitations from the more electronically confined states of the small dots to the higher excitedStates of the large dots.Abstract:
We demonstrate electronic energy transfer between close packed quantum dots using cw and time resolved photoluminescence. Optically clear and thin, close packed quantum dot solids were prepared from mixtures of small and large CdSe quantum dots (38.5 and 62 \AA{}, $\ensuremath{\sigma}l4.5%$). Quenching of the luminescence (lifetime) of the small dots accompanied by enhancement of the luminescence (lifetime) of the large dots is consistent with long-range resonance transfer of electronic excitations from the more electronically confined states of the small dots to the higher excited states of the large dots.read more
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Optically Encoded Multifunctional Nanospheres for One-Pot Separation and Detection of Multiplex DNA Sequences
TL;DR: A simple method for simultaneous detection of multiplex DNA sequences, including complementary DNA (cDNA) sequences of HIV and HCV, DNA sequence of HBV, with QDs-encoded fluorescent nanospheres and nano-γ-Fe2O3-coated magnetic nanosphere with high sensitivity is reported.
Journal ArticleDOI
Aggregation-induced emission in lamellar solids of colloidal perovskite quantum wells
Jakub Jagielski,Sudhir Kumar,Mingchao Wang,Declan Scullion,Robert Lawrence,Yen-Ting Li,Sergii Yakunin,Sergii Yakunin,Tian Tian,Maksym V. Kovalenko,Maksym V. Kovalenko,Yu-Cheng Chiu,Elton J. G. Santos,Shangchao Lin,Chih-Jen Shih +14 more
TL;DR: This work reports aggregation-induced emission phenomena in lamellar solids containing layer-controlled colloidal quantum wells of hybrid organic-inorganic lead bromide perovskites, resulting in anomalously high solid-state ηPL, the first low-dimensional semiconductor nanocrystal system that increases the photoluminescence quantum yield in aggregates.
Journal ArticleDOI
Directing energy flow through quantum dots: towards nanoscale sensing
TL;DR: In this review, recent articles that incorporate QDs into directed energy flow systems are discussed, some with the goal of building new and more powerful sensors and others that could lead to morepowerful sensors.
Journal ArticleDOI
The Dielectric Function of Silver Nanoparticle Langmuir Monolayers Compressed through the Metal Insulator Transition
TL;DR: In this paper, a combination of the so-called Newton−Raphson method, used in conjunction with a Kramers−Kronig analysis, is used to analyze normal-incidence reflectance and transmission measurements of organically passivated silver quantum dot Langmuir monolayers.
Journal ArticleDOI
CsLiB6O10 crystallites embedded into olygoether photopolymer matrices as new materials for acoustically induced nonlinear optics
TL;DR: In this paper, an acoustically induced optical second harmonic generation (SHG) in CsLiB6O10 (CLBO) nanocrystallites incorporated into the olygoether photopolymer matrices has been revealed at liquid helium temperature (4.2 K).