Study on the Interaction of Pd-TMPyP with ctDNA by Solid-substrate Room Temperature Phosphorescence

Spectral analysis methods have been employed to investigate the interactions ofporphyrins with DNA including absorption, fluorescence and circular dichroism.Phosphorescence is another excellent method used in this field for its longer emissionwavelength a…     

Solid‐Phase Room‐Temperature Phosphorescence

Abstract

Solid‐phase phosphorescence (SPP) has become an established approach for the trace analysis of organic compounds. More recently, SPP has been successfully applied to the trace analysis for inorganic species. In this mini review, initially a brief overview of SPP is given. Then the important aspects related to adsorption of the phosphors on the solid phase are discussed. In addition, the basic photophysical aspects of phosphorescence are presented. The physicochemical interactions in SPP, such as the rigidity of the solid phase, effects of oxygen and moisture, heavy‐atom salts, and temperature, are considered. Finally, several recent applications of SPP to both organic and inorganic compounds are discussed.     

Comparison of Four Deoxygenation Techniques for Cyclodextrin Induced Room Temperature Phosphorescence

INTRoDUCTIoNInl984,C1ineLoveetal[1'2JproposedCirRTPinwhichgenerallyoxygenwasre-movedbynitrogencurrent[1-sjinordertodecreasequenchingofoxygentophosphores-cence'Butdeoxygenationbynitrogenpurgingistediousandthoe-consuming'Inl986.~Garciaetal['Jreportedchemica1deoxygenationinmicellarstabiliZ6dRTPwithsodiumsulfiteasoxygenscavenger'Afterthat,chemicaldeoxygenationarewidelyusedinCD-RTP[vaJandmicellarstabilizedRTP[1o-12J.However,deoxygenationwithsodiumsulfitehastwoobviousdisadvantages:firs…     

Room Temperature Phosphorescence of 1-Bromo-4-（bromoacetyl） naphthalene Induced by Sodium Deoxycholate

Sodium deoxycholate (NaDOC) could induce 1-bromo-4-(bromoacetyl) naphthalene(BBAN) to emit strong room temperature phosphorescence (RTP). Measurements of phosphorescence spectra, peak intensity and polarization were used to investigate the solubilization of BBAN as a function of NaDOC concentration.     

AIEgen with Fluorescence–Phosphorescence Dual Mechanoluminescence at Room Temperature

We report the first example of an AIEgen (DPP-BO) with fluorescence–phosphorescence dual emission under mechanical stimulation. By carefully analyzing the crystal structure of DPP-BO, the efficient intermolecular and intramolecular interactions should account for its unique mechanoluminescence (ML) properties, especially the abnormal phosphorescence, as further confirmed by controlled experiments and theoretical calculations for the presence of ISC transitions. These results provide important information for understanding the complex ML process, possibly opening up a new way to study the inherent mechanism of ML by broadening the application of AIEgens.     

Room Temperature Phosphorescence pH Switch Based on Photo-induced Electron Transfer

In this paper, photoinduced electron transfer(PET)phosphoroionophore,N-(1-bromo-2-naphthylmethyl)-dicthanolamine (BND)was synthesized and its phosphorescent characteristics were studied,The experimental results showed that strong phosphorescence could be observed in β-cyclodextrin apueous solution only at low pH value ,This system combined AND and NOT function to produce a three-input inhibit (INH)logic gate .     

Synthesis of New Multibenzo Oxygen–Sulfur Donor Macrocycles Containing Lactams at Room Temperature

Some new oxygen–sulfur, multibenzo macrocyclic ligands containing amide groups have been prepared using the macrocyclization process with the reaction of 2,2′-thiobis-[4-methyl(2-aminophenoxy)phenyl ether] as a symmetrical diamine with appropriate dicarboxylicacid dichlorides in moderate yields. This macrocyclization led to the formation of di- and tetramide macrocycles. These reactions were routinely carried out at ambient temperature in CH₂Cl₂ as solvent in high dilution without template effect conditions. It is found that sulfur the atom affects the rigidity of the macrocycles and diastereotopicity of nuclei in the ring of these series of macrocyclic compounds.     

Facile Synthesis of Gold Nanoplates by Citrate Reduction of AuCl4^- at Room Temperature

Metal and semiconductor nanoparticles with nonspherical shapes, such as wires1, cubes2,3 and belts4, have been drawing a great interest in scientific community as a result of their physical and chemical properties being distinctly different from conventio…     

Rapid Synthesis of Lead Oxide Nanorods by One-step Solid-state Chemical Reaction at Room Temperature

A simple and facile method was reported to synthesize lead oxide nanorods. Nanorods of lead oxide were obtained directly from grinding solid metal salt and sodium hydroxide in agate mortar with the assistance of a suitable nonionic surfactant in only one step, which is different from the result of hydroxide in solution. The product has been characterized by XRD, TEM and SEM. The formation mechanism of rod-like morphology is discussed and the surfactant plays an important soft-template role in modifying the interface of solid-state reaction and according process of rod-formation.     

The Frustrated Reviewer — Recurrent Failures in Manuscripts Describing Validation of Quantitative TLC/HPTLC Procedures for Analysis of Pharmaceuticals

JPC – Journal of Planar Chromatography – Modern TLC - Analytical procedures to be used in pharmaceutical quality control have to be validated strictly in accordance with highly...     

Hydrophilicity Modification of Addition-cured Room Temperature Vulcanization Silicone Rubber

Allyl terminated polyether was used to improve the hydrophilicity of addition-cured room temperature vulcanization silicone rubber. With the increasing of the polyether, both the hydrophilicity and water absorbed of the vulcanizates were increased. The mechanical properties were also improved by adding the polyether. The result showed that 1.5wt% of the polyether provided the silicone rubber with proper hydrophilicity.     

Phosphorescence Induction by Host-Guest Complexation with Cyclodextrins – The Role of Regioisomerism and Affinity

We present an in-depth investigation of cyclodextrin complexes with guest compounds featuring complexation-induced room temperature phosphorescence (RTP) in aqueous solution. Very interestingly, only the complexed regioisomers bearing lateral substituents on meta-position show RTP, whereas the stronger host-guest systems with para-substituted dyes show no RTP features. The reported systems were investigated regarding their complexation behavior in water using isothermal titration calorimetry and mass spectrometry. In the case of γ-CD very strong 1 : 1 inclusion complexes (K_a up to 5.13×10⁵ M⁻¹) were unexpectedly observed. It was found that not only a strong binding to the cyclodextrin cavity is needed to restrict motion, inducing the emission, but also the conformation inside the cavity plays a pivotal role – as supported by an extensive NMR study and MD simulations.     

Efficient Room‐Temperature Synthesis of Tri‐ and Tetrasubstituted Imidazoles Catalyzed by ZrCl4

A general protocol has been developed for the rapid synthesis of 2,4,5‐trisubstituted and 1,2,4,5‐tetrasubstituted imidazoles in high yields using ZrCl₄ as an efficient catalyst at room temperature. A variety of aromatic, aliphatic, and terpenoidal aldehydes underwent condensation with NH₄OAc/amines to give the imidazoles. Similarly, the imidazole glycoconjugates are prepared in good yields from the corresponding glycosyl aldehydes.     

Facile Synthesis of Ferrocenylenones in Free Solvent at Room Temperature

The rate of formation of aldol condensation products by being ground acetylferrocene and various aromatic aldehydes without solvent was dramatically enhanced comparing to ,the conventional methods. The yield is high (84 % - 96 %) at room temperature.     

Substitution Reactions by Azide and Thiocyanide Anions in Room Temperature Ionic Liquids

Conducted in the ionic liquids,activated and inactivated halides,acyl chlorides,tosylate and bezotriazolyl acylates were converted to corresponding azide and thiocyanide compounds in high yields under mild conditions.     

Decarboxylative Acylation of Cyclic Enamides with α-Oxocarboxylic Acids by Palladium-Catalyzed C-H Activation at Room Temperature

An efficient catalytic decarboxylative acylation of unactivated sp(2) (alkenyl) C-H bonds has been developed. Various substituted α-oxocarboxylic acids with different electronic properties react under mild conditions to afford a diverse range of β-acyl enamide products in good yields. The reaction is proposed to proceed via a cyclic vinylpalladium intermediate, facilitating the decarboxylative dehydrogenative process with enamide coupling partners.     

Synthesis of N-（α-Alkoxyalkyl）benzotriazoles Catalyzed by Acidic Ionic Liquid at Room Temperature

N-（α-Alkoxyalkyl）benzotriazoles were synthesized via the condensation of benzotriazole with various aldehydes and alcohols catalyzed by acidic ionic liquid [hmim]HSO4 at room temperature. The yield was up to 99%. This novel method was effective when triethoxymethane was utilized instead of alcohols. Moreover, acidic ionic liquid could be reused easily with no significant degradation of its catalytic activity.     

Water-Accelerated Selective Synthesis of 1,2-Disubstituted Benzimidazoles at Room Temperature Catalyzed by Br⊘nsted Acidic Ionic Liquid

An environmentally benign method for the rapid and selective synthesis of 2-aryl-1-arylmethyl-1H-1,3-benzimidazoles by the reaction of o-phenylenediamines and aromatic aldehydes in the presence of 1-methylimidazolium triflouroacetate ([Hmim]TFA) at room temperature under aqueous conditions is described. The ionic liquid is reusable and could be recycled for several runs without any decrease in its efficiency.     

Studies on Room Temperature Ionic Liquid Prepared from InCl3—MBIC

The phase diapgram of InCl23-MBIC was constructed by DSC method .A clear,colorless and mobile ionic liquid was obtained and liquid down to 258K ,Both Raman Scattering and ab initio calculations indicate that InCl4 is the predominant anion.