= 558-652 nm, and emission lifetimes tau = 0.74-4.7 micros. Bathochromic shifts of the Ir(thpy)(3) family [the complexes with 2-(thiophen-2-yl)pyridine derivatives] are observed by introducing appropriate substituents, e.g., methyl, trifluoromethyl, or thiophen-2-yl. However, Phi(p) of the red emissive complexes (lambda(max) > 600 nm) becomes small, caused by a significant decrease of the radiative
Method for identifying electrophiles and nucleophiles in a sample
申请人:Eichen Yoav
公开号:US20090258430A1
公开(公告)日:2009-10-15
A method and device for identifying a molecule in a sample, the molecule comprising an electrophilic or nucleophilic moiety. The method comprises contacting the sample with a plurality of chemosensors, each of the chemosensors comprising a π-conjugated system and a moiety having a nucleophilic property or an electrophilic property; and measuring an electromagnetic property of each of the chemosensors in the sample; whereby the pattern of changes in the electromagnetic properties of the plurality of chemosensors after chemically reacting with the electrophile or nucleophile of the molecule identifies the molecule in said sample. The device comprises a substrate carrying a plurality of chemosensor molecules having at least one predetermined electromagnetic property, the at least one electromagnetic property being changeable by subjecting the chemosensor molecules to a sample containing at least one electrophile or nuclephile, wherein the pattern of change of the electromagnetic property of the plurality of chemosensor molecules allows the device to identify the electrophile or nuclephile in the sample.
METHOD FOR IDENTIFYING ELECTROPHILES AND NUCLEOPHILES IN A SAMPLE
申请人:Eichen Yoav
公开号:US20110281742A1
公开(公告)日:2011-11-17
A method and device for identifying a molecule in a sample, the molecule comprising an electrophilic or nucleophilic moiety. The method comprises contacting the sample with a plurality of chemosensors, each of the chemosensors comprising a π-conjugated system and a moiety having a nucleophilic property or an electrophilic property; and measuring an electromagnetic property of each of the chemosensors in the sample; whereby the pattern of changes in the electromagnetic properties of the plurality of chemosensors after chemically reacting with the electrophile or nucleophile of the molecule identifies the molecule in said sample. The device comprises a substrate carrying a plurality of chemosensor molecules having at least one predetermined electromagnetic property, the at least one electromagnetic property being changeable by subjecting the chemosensor molecules to a sample containing at least one electrophile or nuclephile, wherein the pattern of change of the electromagnetic property of the plurality of chemosensor molecules allows the device to identify the electrophile or nuclephile in the sample.
Extended heterocyclic systems 2. The synthesis and characterisation of (2-furyl)pyridines, (2-thienyl)pyridines, and furan-pyridine and thiophene-pyridine oligomers
作者:R.Alan Jones、Pervin U. Civcir
DOI:10.1016/s0040-4020(97)00745-x
日期:1997.8
The Stetter procedure has been adapted to produce simple 2-furyl- and 2-thienylpyridines and their relatedoligomers, which have been characterised by 13C NMR spectroscopy. σ values for the 2-furyl and 2-thienyl rings have been deduced from the pKa values of the conjugate acids of the 2-furyl- and 2-thienylpyridines.
Stetter程序已经过调整,可以生产简单的2-呋喃基和2-噻吩基吡啶及其相关的低聚物,这些寡聚物已通过13 C NMR光谱进行了表征。由2-呋喃基和2-噻吩基吡啶的共轭酸的pK a值推导出2-呋喃基和2-噻吩基环的σ值。