Quantitative mass determination of conjugated polymers for single molecule conformation analysis: enhancing rigidity with macrocycles.

نویسندگان

  • Klaus Becker
  • Gerald Gaefke
  • Jasmin Rolffs
  • Sigurd Höger
  • John M Lupton
چکیده

A combination of advanced synthetic and single molecule spectroscopic techniques allowed us to demonstrate that macrocycles, covalently bound to a conjugated polymer backbone, raise the effective chain persistence length by at least a factor of 5.

برای دانلود رایگان متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

مطالعه عددی چگالی حالتها و رسانندگی الکترونی یک سیم مولکولی در حضور یک عامل خارجی

  There is a great interest in the electronic properties of conjugated polymers. Numerous works on the electronic and conduction properties of single-chain conjugated polymers have been published. From an electronic conduction point of view, these systems are quasi-one dimensional. The aim of this paper is to try to investigate corresponding properties in conducting polymers in higher of one-di...

متن کامل

Macrocyclic oligoureas with xanthene and diphenyl ether units.

Two cyclic oligoureas with 64- and 80-membered rings in which two sets of three or four rigid xanthene (X) units are connected via flexible diphenyl ether (D) units were synthesized by a stepwise fragment condensation. The compounds were characterized by (1)H NMR and ESI mass spectrometry. The structure of the cyclic octamer (XXXDXXXD) was additionally confirmed by single crystal X-ray analysis...

متن کامل

Probing of chain conformations in conjugated polymer nanoparticles by electron spin resonance spectroscopy.

In the case of conjugated polymer chains usually considered as rigid or stiff, it is an open question how the individual chains adopt their conformation inside nanoparticles. Here, the conformation of such a rigid conjugated polymer chain is elucidated for the first time. For this purpose, electron paramagnetic resonance spectroscopy as a method allowing for a direct observation is established.

متن کامل

DESIGN AND SYNTHESIS OF CONJUGATED MACROCYCLES AND POLYMERS by Julian

The design, synthesis and characterization of conjugated macrocycles and polymers are presented in this dissertation. In particular, work involving the exploration of unusual and/or novel aromatic structures for various materials applications is described in detail, along with appropriate discussions of relevant structure-property relationships. A brief general introduction to J-aggregates and ...

متن کامل

Nesting complexation of C60 with large, rigid D2 symmetrical macrocycles.

A series of four chiral D(2) symmetrical macrocycles, in which two 3,3'-disubstituted Binol units are bridged by conjugated organic spacers of differing lengths and/or electronic properties, have been synthesized and characterized. The four different bridges consist of either ether or ester linkages in combination with either short biphenyl spacers or long diethynylphenyl spacers. NMR, CD spect...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

عنوان ژورنال:
  • Chemical communications

دوره 46 26  شماره 

صفحات  -

تاریخ انتشار 2010