WorldCat Identities

Hecht, Stefan

Overview
Works: 24 works in 33 publications in 2 languages and 191 library holdings
Genres: Case studies  Academic theses 
Roles: Author, Other, Contributor
Publication Timeline
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Most widely held works by Stefan Hecht
Anwendung refraktionsseismischer Methoden zur Erkundung des oberflächennahen Untergrundes : mit acht Fallbeispielen aus Südwestdeutschland by Stefan Hecht( Book )

5 editions published in 2001 in German and Undetermined and held by 69 WorldCat member libraries worldwide

Funktionale Erweiterung der Capture Compound Mass Spectrometry TM - Synthese und Anwendung innovativer Capture Compounds TM by Matthias Baranowski( )

1 edition published in 2012 in German and held by 16 WorldCat member libraries worldwide

Photocontrolling the Diels-Alder reaction by Robert Göstl( )

1 edition published in 2014 in English and held by 16 WorldCat member libraries worldwide

Improving the design of diarylethene photoswitches and their exploitation as remote-controlled building blocks by Martin Herder( )

1 edition published in 2015 in German and held by 15 WorldCat member libraries worldwide

Ueber die Veränderung wertbestimmender Stoffgruppen bei der Herstellung von bayerischen Weizenbieren( Book )

1 edition published in 1983 in German and held by 10 WorldCat member libraries worldwide

... Bericht über die Ausgrabungen in Olympia( Book )

1 edition published in 2013 in German and held by 6 WorldCat member libraries worldwide

Rhinomanometrie : über d. mathematische Bestimmung des Gesamtnasenwiderstandes, Erfahrungen mit d. Broms'schen Modell by Stefan Hecht( )

3 editions published in 1983 in German and Undetermined and held by 5 WorldCat member libraries worldwide

Synthesis and application of functional branched macromolecules : from site isolation and energy harvesting to catalysis by Stefan Hecht( )

3 editions published in 2001 in English and held by 5 WorldCat member libraries worldwide

The symbiosis of our understanding of structure property relationships in many biological macromolecules and our increased ability to prepare large synthetic macromolecules with exquisite structural precision has generated a new area of research where chemistry and materials science join with biology. For example, numerous biological systems utilize the concept of site isolation whereby an active center or catalytic site is encapsulated, frequently within a protein, to afford properties that would not be encountered in the bulk state. The ability of a dendritic shell to encapsulate functional core moieties and to create specific site-isolated nanoenvironments, thereby affecting molecular properties, not only mimics natural systems but affords novel materials with unique characteristics. Furthermore, introduction of donor chromophores at periphery of dendrimers having a central acceptor dye enables spatial and spectral energy concentration at the core. Continuing the effort towards designing bio-inspired macromolecules, this dissertation describes the use of different polymer architectures to encapsulate active sites that have either photophysical, photochemical, or catalytic functions and the evaluation of site isolation using a variety of different techniques. While the first part is mainly concerned with different synthetic approaches towards site isolation of porphyrin moieties, the second part describes the design of light-driven catalytic systems incorporating both light harvesting and energy conversion. The fundamental knowledge that can be gleaned from such investigations has implications that range from the preliminary design of artificial enzymes to the construction of molecular-scale devices
Rhinomanometrie: über die mathematische Bestimmung des Gesamtnasenwiderstandes, Erfahrungen mit dem Broms'schen Modell by Stefan Hecht( Book )

1 edition published in 1983 in German and held by 4 WorldCat member libraries worldwide

Light-controlled energy transfer by Javier Moreno Ortego( )

1 edition published in 2015 in English and held by 2 WorldCat member libraries worldwide

Neuartige Photoschalter auf der Basis von Spiroacridanen by Alina Raskosova( )

1 edition published in 2014 in German and held by 2 WorldCat member libraries worldwide

Geo-Archäologie : Prof. Dr. Olaf Bubenzer untersucht mit deutschen und chinesischen Studierenden Erdschichten im westchinesischen Turpan-Becken by Olaf Bubenzer( )

1 edition published in 2010 in German and held by 1 WorldCat member library worldwide

Design and synthesis of photoswitchable polymerization catalysts by Antti Alexander Senf( )

1 edition published in 2016 in English and held by 1 WorldCat member library worldwide

Geophysical-geochemical reconstruction of ancient population size : the Early Bronze Age settlement of Fidvár (Slovakia) by Erich Nowaczinski( )

1 edition published in 2013 in English and held by 1 WorldCat member library worldwide

A Versatile Approach for In Situ Monitoring of Photoswitches and Photopolymerizations( )

1 edition published in 2017 in English and held by 1 WorldCat member library worldwide

Abstract: A simple, inexpensive, and modular method to directly illuminate NMR samples for in situ analysis of photochemical transformations is reported. The versatility of this technique is demonstrated by analyzing the light‐induced propagating front for small‐molecule photoswitches and the kinetics of photocontrolled living radical polymerizations. In situ measurements allow oxygen‐sensitive and rapid photoevents to be studied in detail, leading to reliable determination of photoswitching quantum yields and polymerization rates. By systematically tuning light intensity, a direct relationship between propagation rate and intensity is revealed. Of particular note is the facile translation of the conditions identified through this NMR analysis to analogous benchtop experiments with insight into the nature of the photoreactive species. Abstract : Lights, Camera, Action ! Photoswitching processes and photopolymerizations were monitored in real time with NMR spectroscopy, made possible by a simple and modular optical‐fiber LED setup. The presented technique was employed to obtain isomerization quantum yields for reverse photochromes and was used for temporal monitoring of photoinduced polymerizations
Rhonomanometrie : Über die mathematische Bestimmung des Gesamtnasenwiderstandes. Erfahrungen mit dem Broms'schen Modell by Stefan Hecht( )

1 edition published in 1983 in German and held by 1 WorldCat member library worldwide

 
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Audience Level
0
Audience Level
1
  Kids General Special  
Audience level: 0.90 (from 0.80 for Synthesis ... to 0.99 for Geophysica ...)

Languages
German (18)

English (8)