The Experts below are selected from a list of 19035 Experts worldwide ranked by ideXlab platform
Stuart L Cooper - One of the best experts on this subject based on the ideXlab platform.
-
Quaternary Ammonium functionalized poly propylene imine dendrimers as effective antimicrobials structure activity studies
Biomacromolecules, 2000Co-Authors: Chris Zhisheng Chen, Nora C Becktan, Prasad Dhurjati, And Robert A Larossa, Stuart L CooperAbstract:Quaternary Ammonium functionalized poly(propyleneimine) dendrimers were synthesized and their antibacterial properties were evaluated using a bioluminescence method. These Quaternary Ammonium dendrimers are very potent biocides. The antibacterial properties depend on the size of the dendrimer, the length of hydrophobic chains in the Quaternary Ammonium groups, and the counteranion. Since these dendrimers are well characterized and monodisperse, they also serve as an effective system to study the structure−activity relationship. The antimicrobial properties of these dendrimer biocides have a parabolic dependence on molecular weight, which is different from the bell-shaped molecular weight dependence of conventional polymer biocides. The dependence on the hydrophobic chain of the Quaternary Ammonium structure is similar to conventional polymer biocides, and shows a parabolic relationship with dendrimer biocides carrying C10 hydrophobes the most potent. The antimicrobial properties of these novel biocides wi...
-
Quaternary Ammonium functionalized poly propylene imine dendrimers as effective antimicrobials structure activity studies
Biomacromolecules, 2000Co-Authors: Chris Zhisheng Chen, Nora C Becktan, Prasad Dhurjati, T K Van Dyk, Robert A Larossa, Stuart L CooperAbstract:Quaternary Ammonium functionalized poly(propyleneimine) dendrimers were synthesized and their antibacterial properties were evaluated using a bioluminescence method. These Quaternary Ammonium dendrimers are very potent biocides. The antibacterial properties depend on the size of the dendrimer, the length of hydrophobic chains in the Quaternary Ammonium groups, and the counteranion. Since these dendrimers are well characterized and monodisperse, they also serve as an effective system to study the structure-activity relationship. The antimicrobial properties of these dendrimer biocides have a parabolic dependence on molecular weight, which is different from the bell-shaped molecular weight dependence of conventional polymer biocides. The dependence on the hydrophobic chain of the Quaternary Ammonium structure is similar to conventional polymer biocides, and shows a parabolic relationship with dendrimer biocides carrying C10 hydrophobes the most potent. The antimicrobial properties of these novel biocides with bromide anions are more potent than those with chloride anions. Biocides derived from hyperbranched polymers were also synthesized and found to possess somewhat lower effectiveness.
Chris Zhisheng Chen - One of the best experts on this subject based on the ideXlab platform.
-
Quaternary Ammonium functionalized poly propylene imine dendrimers as effective antimicrobials structure activity studies
Biomacromolecules, 2000Co-Authors: Chris Zhisheng Chen, Nora C Becktan, Prasad Dhurjati, And Robert A Larossa, Stuart L CooperAbstract:Quaternary Ammonium functionalized poly(propyleneimine) dendrimers were synthesized and their antibacterial properties were evaluated using a bioluminescence method. These Quaternary Ammonium dendrimers are very potent biocides. The antibacterial properties depend on the size of the dendrimer, the length of hydrophobic chains in the Quaternary Ammonium groups, and the counteranion. Since these dendrimers are well characterized and monodisperse, they also serve as an effective system to study the structure−activity relationship. The antimicrobial properties of these dendrimer biocides have a parabolic dependence on molecular weight, which is different from the bell-shaped molecular weight dependence of conventional polymer biocides. The dependence on the hydrophobic chain of the Quaternary Ammonium structure is similar to conventional polymer biocides, and shows a parabolic relationship with dendrimer biocides carrying C10 hydrophobes the most potent. The antimicrobial properties of these novel biocides wi...
-
Quaternary Ammonium functionalized poly propylene imine dendrimers as effective antimicrobials structure activity studies
Biomacromolecules, 2000Co-Authors: Chris Zhisheng Chen, Nora C Becktan, Prasad Dhurjati, T K Van Dyk, Robert A Larossa, Stuart L CooperAbstract:Quaternary Ammonium functionalized poly(propyleneimine) dendrimers were synthesized and their antibacterial properties were evaluated using a bioluminescence method. These Quaternary Ammonium dendrimers are very potent biocides. The antibacterial properties depend on the size of the dendrimer, the length of hydrophobic chains in the Quaternary Ammonium groups, and the counteranion. Since these dendrimers are well characterized and monodisperse, they also serve as an effective system to study the structure-activity relationship. The antimicrobial properties of these dendrimer biocides have a parabolic dependence on molecular weight, which is different from the bell-shaped molecular weight dependence of conventional polymer biocides. The dependence on the hydrophobic chain of the Quaternary Ammonium structure is similar to conventional polymer biocides, and shows a parabolic relationship with dendrimer biocides carrying C10 hydrophobes the most potent. The antimicrobial properties of these novel biocides with bromide anions are more potent than those with chloride anions. Biocides derived from hyperbranched polymers were also synthesized and found to possess somewhat lower effectiveness.
Laurence Miesch - One of the best experts on this subject based on the ideXlab platform.
-
spirocyclization of keto ynesulfonamides promoted by Quaternary Ammonium salts
Organic chemistry frontiers, 2019Co-Authors: Frederic Beltran, Lucile Andna, Laurence MieschAbstract:Spirocyclization of keto-ynesulfonamides with Quaternary Ammonium salts was performed to access aza-spiro compounds. Exclusive E-configured 5-exo-dig compounds were isolated from keto-ynesulfonamides substituted by an aryl- or a vinyl group, whereas 6-endo-dig compounds were favored from terminal ynesulfonamides.
-
Spirocyclization of keto-ynesulfonamides promoted by Quaternary Ammonium salts
Organic Chemistry Frontiers, 2019Co-Authors: Frederic Beltran, Lucile Andna, Laurence MieschAbstract:Spirocyclization of keto-ynesulfonamides with Quaternary Ammonium salts was performed to access aza-spiro compounds. , Spirocyclization of keto-ynesulfonamides with Quaternary Ammonium salts was performed to access aza-spiro compounds. Exclusive E -configured 5- exo-dig compounds were isolated from keto-ynesulfonamides substituted by an aryl- or a vinyl group, whereas 6- endo-dig compounds were favored from terminal ynesulfonamides.
Prasad Dhurjati - One of the best experts on this subject based on the ideXlab platform.
-
Quaternary Ammonium functionalized poly propylene imine dendrimers as effective antimicrobials structure activity studies
Biomacromolecules, 2000Co-Authors: Chris Zhisheng Chen, Nora C Becktan, Prasad Dhurjati, And Robert A Larossa, Stuart L CooperAbstract:Quaternary Ammonium functionalized poly(propyleneimine) dendrimers were synthesized and their antibacterial properties were evaluated using a bioluminescence method. These Quaternary Ammonium dendrimers are very potent biocides. The antibacterial properties depend on the size of the dendrimer, the length of hydrophobic chains in the Quaternary Ammonium groups, and the counteranion. Since these dendrimers are well characterized and monodisperse, they also serve as an effective system to study the structure−activity relationship. The antimicrobial properties of these dendrimer biocides have a parabolic dependence on molecular weight, which is different from the bell-shaped molecular weight dependence of conventional polymer biocides. The dependence on the hydrophobic chain of the Quaternary Ammonium structure is similar to conventional polymer biocides, and shows a parabolic relationship with dendrimer biocides carrying C10 hydrophobes the most potent. The antimicrobial properties of these novel biocides wi...
-
Quaternary Ammonium functionalized poly propylene imine dendrimers as effective antimicrobials structure activity studies
Biomacromolecules, 2000Co-Authors: Chris Zhisheng Chen, Nora C Becktan, Prasad Dhurjati, T K Van Dyk, Robert A Larossa, Stuart L CooperAbstract:Quaternary Ammonium functionalized poly(propyleneimine) dendrimers were synthesized and their antibacterial properties were evaluated using a bioluminescence method. These Quaternary Ammonium dendrimers are very potent biocides. The antibacterial properties depend on the size of the dendrimer, the length of hydrophobic chains in the Quaternary Ammonium groups, and the counteranion. Since these dendrimers are well characterized and monodisperse, they also serve as an effective system to study the structure-activity relationship. The antimicrobial properties of these dendrimer biocides have a parabolic dependence on molecular weight, which is different from the bell-shaped molecular weight dependence of conventional polymer biocides. The dependence on the hydrophobic chain of the Quaternary Ammonium structure is similar to conventional polymer biocides, and shows a parabolic relationship with dendrimer biocides carrying C10 hydrophobes the most potent. The antimicrobial properties of these novel biocides with bromide anions are more potent than those with chloride anions. Biocides derived from hyperbranched polymers were also synthesized and found to possess somewhat lower effectiveness.
Nora C Becktan - One of the best experts on this subject based on the ideXlab platform.
-
Quaternary Ammonium functionalized poly propylene imine dendrimers as effective antimicrobials structure activity studies
Biomacromolecules, 2000Co-Authors: Chris Zhisheng Chen, Nora C Becktan, Prasad Dhurjati, And Robert A Larossa, Stuart L CooperAbstract:Quaternary Ammonium functionalized poly(propyleneimine) dendrimers were synthesized and their antibacterial properties were evaluated using a bioluminescence method. These Quaternary Ammonium dendrimers are very potent biocides. The antibacterial properties depend on the size of the dendrimer, the length of hydrophobic chains in the Quaternary Ammonium groups, and the counteranion. Since these dendrimers are well characterized and monodisperse, they also serve as an effective system to study the structure−activity relationship. The antimicrobial properties of these dendrimer biocides have a parabolic dependence on molecular weight, which is different from the bell-shaped molecular weight dependence of conventional polymer biocides. The dependence on the hydrophobic chain of the Quaternary Ammonium structure is similar to conventional polymer biocides, and shows a parabolic relationship with dendrimer biocides carrying C10 hydrophobes the most potent. The antimicrobial properties of these novel biocides wi...
-
Quaternary Ammonium functionalized poly propylene imine dendrimers as effective antimicrobials structure activity studies
Biomacromolecules, 2000Co-Authors: Chris Zhisheng Chen, Nora C Becktan, Prasad Dhurjati, T K Van Dyk, Robert A Larossa, Stuart L CooperAbstract:Quaternary Ammonium functionalized poly(propyleneimine) dendrimers were synthesized and their antibacterial properties were evaluated using a bioluminescence method. These Quaternary Ammonium dendrimers are very potent biocides. The antibacterial properties depend on the size of the dendrimer, the length of hydrophobic chains in the Quaternary Ammonium groups, and the counteranion. Since these dendrimers are well characterized and monodisperse, they also serve as an effective system to study the structure-activity relationship. The antimicrobial properties of these dendrimer biocides have a parabolic dependence on molecular weight, which is different from the bell-shaped molecular weight dependence of conventional polymer biocides. The dependence on the hydrophobic chain of the Quaternary Ammonium structure is similar to conventional polymer biocides, and shows a parabolic relationship with dendrimer biocides carrying C10 hydrophobes the most potent. The antimicrobial properties of these novel biocides with bromide anions are more potent than those with chloride anions. Biocides derived from hyperbranched polymers were also synthesized and found to possess somewhat lower effectiveness.
