A fluorescent thermometer operating in aggregation-induced emission mechanism: probing thermal transitions of PNIPAM in water.

نویسندگان

  • Li Tang
  • Jia Ke Jin
  • Anjun Qin
  • Wang Zhang Yuan
  • Yu Mao
  • Ju Mei
  • Jing Zhi Sun
  • Ben Zhong Tang
چکیده

Poly(N-isopropylacrylamide) was labelled using a fluorogen with an aggregation-induced emission feature by direct polymerization; the label served as a fluorogenic probe that reveals fine details in the thermal transitions in the aqueous solution of the polymer; the working mode was readily tuned between non-monotonic and monotonic by changing the labelling degree of the polymer.

برای دانلود 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

Phase Separation of Poly(N-isopropylacrylamide) in Mixtures of Water and Methanol: A Spectroscopic Study of the Phase-Transition Process with a Polymer Tagged with a Fluorescent Dye and a Spin Label

The thermoreversible phase transition of poly(N-isopropylacrylamide) randomly labeled with a spin label, 4-amino-2,2',6,6'-tetramethylpiperidine 1-oxide (TEMPO), and a fluorescent dye, 4-(pyren-1-yl)butyl (PNIPAM-Py-T), in different H2O/MeOH mixtures was studied by turbidimetry, continuous-wave electron paramagnetic resonance spectroscopy (CW-EPR), and fluorescence spectroscopy. The macroscopic...

متن کامل

LCST transition of PNIPAM-b-PVCL in water: cooperative aggregation of two distinct thermally responsive segments.

The self-aggregation behavior of poly(N-isopropylacrylamide)-b-poly(N-vinylcaprolactam) (PNIPAM-b-PVCL) during the thermal-induced phase transition in water was explored by a combination of calorimetric, turbidity, dynamic light scattering (DLS) and FTIR measurements. Only one transition can be observed via all detecting methods, revealing the cooperative aggregation of the two distinct tempera...

متن کامل

Fluorometric probing of the lipase level as acute pancreatitis biomarkers based on interfacially controlled aggregation-induced emission (AIE).

As a sudden inflammation of the pancreas, acute pancreatitis presents severe complications and a high mortality rate, despite treatment. Lipase in serum serves as an essential biomarker of acute pancreatitis and even pancreatic cancer. Therefore, developing robust, convenient and sensitive probing of lipase levels is greatly needed. In this work, we present glutamate functionalized tetraphenyle...

متن کامل

Surface Recognition and Complexations Between Synthetic Poly(ribo)nucleotides and Neutral Phospholipids and Their Implications in Lipofection

Thermodynamic features related to preparation and use of self-assemblies formed between multilamellar and unilamellar zwitterionic liposomes and polynucleotides with various conformation and sizes are presented. The divalent metal cation or surfactant-induced adsorption, aggregation and adhesion between single- and double-stranded polyribonucleotides and phosphatidylcholine vesicles was followe...

متن کامل

Surface Recognition and Complexations Between Synthetic Poly(ribo)nucleotides and Neutral Phospholipids and Their Implications in Lipofection

Thermodynamic features related to preparation and use of self-assemblies formed between multilamellar and unilamellar zwitterionic liposomes and polynucleotides with various conformation and sizes are presented. The divalent metal cation or surfactant-induced adsorption, aggregation and adhesion between single- and double-stranded polyribonucleotides and phosphatidylcholine vesicles was followe...

متن کامل

ذخیره در منابع من

ذخیره در منابع من قبلا به منابع من ذحیره شده

{@ msg_add @}


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

برای دانلود 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

عنوان ژورنال:
  • Chemical communications

دوره 33  شماره 

صفحات  -

تاریخ انتشار 2009