Navigation Links
Dartmouth researchers develop molecular switch that changes liquid crystal colors
Date:8/26/2013

Dartmouth researchers have developed a molecular switch that changes a liquid crystal's readout color based on a chemical input. This new development may open the way for using liquid crystals in detecting harmful gases, pathogens, explosives and other chemical substances.

The findings appear in the journal Angewandte Chemie. A PDF of the study is available on request.

One of the challenges in the field of molecular switches and machines is the translation of molecular level motion into macroscopic level events by harnessing light or chemical energy -- think of a molecular-sized light switch that can be turned on and off. With an actual light switch, this can be easily done by hard wiring the switch to a light source, but doing this at the nanoscale is challenging.

In their study, the Dartmouth researchers used liquid crystals such as the ones in LCD (liquid crystal display) monitors and TV screens to address this challenge. They synthesized a pH activated molecular switch that can control the long range assembly of a commercially available liquid crystal called NP5. This manipulation changed the readout color of NP5 from purple to green depending on the applied pH, confirming the molecular level motion is responsible for the change in the photophysical properties of the liquid crystal.

The findings open the way for researchers to design molecular switches that produce different liquid crystal readout colors when harmful chemical substances are detected. If these liquid crystals are used as pixels similar to the ones in LCD screens researchers may be able to bunch them together and develop groups of sensors that can quickly analyze and detect hazardous materials.


'/>"/>

Contact: John Cramer
john.cramer@dartmouth.edu
603-646-9130
Dartmouth College
Source:Eurekalert

Page: 1

Related medicine news :

1. Dartmouth researchers test safety of Nivolumab in kidney cancer
2. Leap in leukemia treatment reported by Dartmouth researchers
3. Dartmouth medical research closes in on new tuberculosis vaccine
4. Mayo Clinic, Dartmouth-Hitchcock announce collaboration
5. Dartmouth researchers investigate the cognitive effects of athlete head impacts
6. Researchers from Mount Sinai receive NIH grant to study promising treatment for Autism subtype
7. Johns Hopkins researchers identify conditions most likely to kill encephalitis patients
8. CWRU dental researchers discover how an oral bacterium can trigger colorectal cancer
9. Moffitt researchers identify gene variations that may help predict cancer treatment response
10. Thomas Jefferson University Kimmel Cancer Center: Researchers Find New Clues to Treat Rare and Aggressive Inflammatory Breast Cancer
11. Ohio State researchers restore immune function in spinal injured mice
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:2/5/2016)... ... February 05, 2016 , ... Pivot Point Consulting, a ... KLAS: Software & Services for HIT Implementation Support & Staffing report with an ... vendor performance by healthcare executives, managers and clinicians representing over 4,500 hospitals and ...
(Date:2/5/2016)... ... 2016 , ... Dr. Justin Scott and Dr. Lydia Muccioli of Pure ... to individuals in need. The event is scheduled to take place on February 27, ... to provide dental care to community members in need. Each patient will be given ...
(Date:2/5/2016)... ... 05, 2016 , ... Dr. Ben Amini, a San ... welcoming orthodontist, Dr. Amanda Cheng, to the practice. With the addition of services ... including general dentistry, cosmetic treatments, periodontics, implant dentistry , endodontics, orthodontics and ...
(Date:2/5/2016)... ... February 05, 2016 , ... In sleep, when the defenses of the day ... feature of patients with eating disorders is significant self-criticism, and consequently these patients experience ... are regarded as maladaptive means for coping with this unease, but also leads to ...
(Date:2/5/2016)... , ... February 05, 2016 , ... ... practical mobile kitchens, recently announced the debut of their latest mobile kitchen model, ... Kitchens provides organizations with modern, high-volume commercial kitchens for use anywhere in the ...
Breaking Medicine News(10 mins):
(Date:2/5/2016)... -- France , Germany , ... Israel ). It includes a 10-year epidemiology forecast for ... by age and sex in these markets. GD epidemiology report is written ... high quality, transparent and market-driven, providing expert analysis of disease trends in ... , Italy , Spain , ...
(Date:2/4/2016)... -- For hospitals considering enrollment in the Federal 340B ... program, the Health Resources and Services Administration,s (HRSA) recent ... , could have significant impact on plans and operations, ... Essential Insights , Daniel Neal, director ... Mega-Guidance,s key proposed changes, including a new requirement that ...
(Date:2/4/2016)... -- The Senior Care Pharmacy Coalition (SCPC) today commended ... Jason Chaffetz (R-UT) and Ranking Member Elijah ... "Developments in the Prescription Drug Market," to examine ... abusive pharmacy benefit manager (PBM) pricing practices. ... Elijah Cummings (D-MD) are diligent, serious lawmakers committed ...
Breaking Medicine Technology: