Hasil untuk "Organic chemistry"

Jack Twilton, C. Le, Patricia Zhang et al.

A. Gałuszka, Z. Migaszewski, P. Konieczka et al.

V. Pattabiraman, J. Bode

M. Mahmoudi, I. Lynch, M. Ejtehadi et al.

Yan Ji, Xiaoliang Yang, Zhi Ji et al.

The infrared spectrum (IR) characteristic peaks of amide I, amide II, and amide III bands are marked as amide or peptide characteristic peaks. Through the nuclear magnetic resonance study, N-methylacetamide has been determined to have six fine components, which include protonation, hydration, and hydroxy structures. Then the independent IR spectrum of every component in N-methylacetamide is calculated by using the density functional theory quantum chemistry method, and the contribution of each component to amide I, II, and III bands is analyzed. The results of this research can help to explain the formation of the amide infrared spectrum, which has positive significance in organic chemistry, analytical chemistry, and chemical biology.

S. Gratton, P. A. Ropp, P. Pohlhaus et al.

David A. Nicewicz, D. MacMillan

M. Law, Lori E. Greene, Justin C. Johnson et al.

K. Nicolaou, P. Bulger, D. Sarlah

P. Judeinstein, C. Sanchez

P. Jessop, D. Heldebrant, Xiaowang Li et al.

C. Sanchez, B. Lebeau, F. Chaput et al.

F. Kakiuchi, N. Chatani

A. Facchetti

Organic molecules/polymers with a π-conjugated (hetero)aromatic backbone are capable of transporting charge and interact efficiently with light. Therefore, these systems can act as semiconductors in opto-electronic devices similar to inorganic materials. However, organic chemistry offers tools for tailoring materials' functional properties via modifications of the molecular/monomeric units, opening new possibilities for inexpensive device manufacturing. This article reviews the fundamental aspects behind the structural design/realization of p- (hole transporting) and n-channel (electron-transporting) semiconductors for organic field-effect transistors (OFETs). An introduction to OFET principles and history, as well as of the state-of-the-art organic semiconductor structure and performance of OFETs is provided.

N. Koch

M. Alcarazo, C. Lehmann, A. Anoop et al.

L. Tebben, A. Studer

J. Wegner, S. Ceylan, A. Kirschning

A. P. Côté, Hani M. El‐Kaderi, H. Furukawa et al.

Jingyi Zhang, Congmei Lin, Feng Li et al.

Cancer is one of the major public health challenges in the world, which is characterized by rapid progression and high mortality. Immunotherapy, represented by PD-1 monoclonal antibody, has significantly improved the efficacy of malignant tumors and has become one of the most popular immunotherapy methods at present. Therefore, there is an increasing demand for novel detection methods for PD-1 monoclonal antibodies. The aim of this work was to establish a rapid, simple, and sensitive immunochromatographic test strip (ICTS) based on the AuNPs enlargement for both visual and instrumental detection of the PD-1 monoclonal antibody concentration. The mixed solution of NH₂OH·HCl and HAuCl₄ was used as an enhancement solution to lower the detection limit and achieve higher sensitivity. A test strip reader was used to construct a visualized quantitative detection standard curve for the PD-1 monoclonal antibody concentration. The LOD was 1.58 ng/mL through a triple signal-to-noise ratio. The detection time was within 10 min. The constructed test strips can rapidly, accurately, and efficiently detect the concentration of PD-1 monoclonal antibody in real samples.